Title: Cheap Flights from Ottawa (YOW) to Helena (HLN) - Expedia.ca ![Cathedral of St. Helena featuring landscape views, a city and night scenes](https://images.trvl-media.com/place/6115502/23c3c7c5-fe1b-40e6-b670-7f248391f3ad.jpg?impolicy=fcrop&w=1200&h=500&q=medium) Photo by Bob Webster ![](https://images.trvl-media.com/place/6115502/23c3c7c5-fe1b-40e6-b670-7f248391f3ad.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Ottawa (YOW) to Helena (HLN) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Ottawa International Airport (YOW) to Helena, MT (HLN-Helena Regional) - ![Air Canada](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.ca/Flights-Search?leg1=from:yow,to:hln,departure:29/10/2025TANYT&leg2=from:hln,to:yow,departure:05/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![WestJet](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WS.svg) WestJet [](https://www.expedia.ca/Flights-Search?leg1=from:yow,to:hln,departure:29/10/2025TANYT&leg2=from:hln,to:yow,departure:05/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WS"}}]) - ![Flair Airlines](https://a.travel-assets.com/air/airlines/f8_sq.svg) Flair Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:yow,to:hln,departure:29/10/2025TANYT&leg2=from:hln,to:yow,departure:05/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F8"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:yow,to:hln,departure:29/10/2025TANYT&leg2=from:hln,to:yow,departure:05/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.ca/Flights-Search?leg1=from:yow,to:hln,departure:29/10/2025TANYT&leg2=from:hln,to:yow,departure:05/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.ca/Flights-Search?leg1=from:yow,to:hln,departure:29/10/2025TANYT&leg2=from:hln,to:yow,departure:05/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![Porter Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_PD.svg) Porter Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:yow,to:hln,departure:29/10/2025TANYT&leg2=from:hln,to:yow,departure:05/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"PD"}}]) ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Cheap flights from Ottawa (YOW) to Helena (HLN) Prices were available within the past 7 days and start at for one-way flights and CA $872 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Nov 18 - Sun, Nov 23 YOW Ottawa HLN Helena CA $872 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:HLN,departure:18/11/2025TANYT&leg2=from:HLN,to:YOW,departure:23/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:871.31&airProductToken=AQqjAQo1CNWCARIEMzU4MRjYswEgrhwoiLP9AjCptP0COE5AAFgBaghFQ09CQVNJQ3IIS05VNUEwQk4KNAjVggESBDIxMzEYrhwgg2ko17T9AjD_tf0COE5AAVgBaghFQ09CQVNJQ3IIS05VNUEwQk4KNAjVggESBDUzODgYg2kg52oorLb9AjCrt_0COE5AAVgBaghFQ09CQVNJQ3IIS05VNUEwQk4KowEKNAjVggESBDU5MTEY52ogg2kogvD9AjCD8f0COE5AAFgBaghFQ09CQVNJQ3IITE5BNUEwQk4KNAjVggESBDE5MjQYg2kgiBgow_T9AjCI9v0COE5AAVgBaghFQ09CQVNJQ3IITE5BNUEwQk4KNQjVggESBDQ0MjQYiBgg2LMBKMb5_QIwr_r9AjhOQAFYAWoIRUNPQkFTSUNyCExOQTVBMEJOEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Nov 8 - Thu, Nov 13 YOW Ottawa HLN Helena CA $887 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:HLN,departure:08/11/2025TANYT&leg2=from:HLN,to:YOW,departure:13/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:886.64&airProductToken=AQqiAQo1CNWCARIEMzYyORjYswEgxI0BKLTC_AIwm8P8AjhMQABYAWoHRUNPTk9NWXIITE5BNUEwVEcKNAjVggESBDIxMjAYxI0BIINpKKbG_AIwrsj8AjhMQAFYAWoHRUNPTk9NWXIITE5BNUEwVEcKMwjVggESBDQ3MDUYg2kg52oox8n8AjDGyvwCOExAAVgBagdFQ09OT01ZcghMTkE1QTBURwqiAQozCNWCARIENTkxMRjnaiCDaSjC__wCMMOA_QI4TEAAWAFqB0VDT05PTVlyCExGQTJBREROCjQI1YIBEgQxNzQ1GINpIMSNASj6g_0CMNGF_QI4R0ABWAFqB0VDT05PTVlyCEdOQTRBMlRHCjUI1YIBEgQzNTkyGMSNASDYswEo2oj9AjC4if0COEdAAVgBagdFQ09OT01ZcghHTkE0QTJURxIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Nov 8 - Thu, Nov 13 YOW Ottawa HLN Helena CA $893 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:HLN,departure:08/11/2025TANYT&leg2=from:HLN,to:YOW,departure:13/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:892.31&airProductToken=AQqjAQo1CNWCARIEMzY2MxjYswEgrhwo6sT8AjCLxvwCOE5AAFgBaghFQ09CQVNJQ3IITE5BNUEwQk4KNAjVggESBDE0ODUYrhwgg2ko-Mb8AjCiyPwCOE5AAVgBaghFQ09CQVNJQ3IITE5BNUEwQk4KNAjVggESBDQ3MDUYg2kg52oox8n8AjDGyvwCOE5AAVgBaghFQ09CQVNJQ3IITE5BNUEwQk4KogEKNAjVggESBDU5MTEY52ogg2kowv_8AjDDgP0COE5AAFgBaghFQ09CQVNJQ3IITE5BNUEwQk4KMwjVggESAzM3NxiDaSCuHCiygv0CMMeD_QI4TkABWAFqCEVDT0JBU0lDcghMTkE1QTBCTgo1CNWCARIEMzUzNhiuHCDYswEogIf9AjD-h_0COE5AAVgBaghFQ09CQVNJQ3IITE5BNUEwQk4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Nov 8 - Thu, Nov 13 YOW Ottawa HLN Helena CA $896 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:HLN,departure:08/11/2025TANYT&leg2=from:HLN,to:YOW,departure:13/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:895.68&airProductToken=AQqhAQo1CNWCARIEODExMxjYswEgmM4BKKHF_AIw8cX8AjhMQABYAWoHRUNPTk9NWXIITE5BNUEwVEcKMwjVggESAzU2OBiYzgEgg2kolsf8AjCByfwCOExAAVgBagdFQ09OT01ZcghMTkE1QTBURwozCNWCARIENDcwNRiDaSDnaijHyfwCMMbK_AI4TEABWAFqB0VDT05PTVlyCExOQTVBMFRHCqIBCjMI1YIBEgQ1OTExGOdqIINpKML__AIww4D9AjhMQABYAWoHRUNPTk9NWXIITEZBMkFERE4KNAjVggESBDE3NDUYg2kgxI0BKPqD_QIw0YX9AjhHQAFYAWoHRUNPTk9NWXIIR05BNEEyVEcKNQjVggESBDM1OTIYxI0BINizASjaiP0CMLiJ_QI4R0ABWAFqB0VDT05PTVlyCEdOQTRBMlRHEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Mon, Nov 10 - Sat, Nov 15 YOW Ottawa HLN Helena CA $907 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:HLN,departure:10/11/2025TANYT&leg2=from:HLN,to:YOW,departure:15/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:906.19&airProductToken=AQqdAQozCNWCARIEODQ4NhjYswEgQyiC2_wCMO_b_AI4TEAAWAFqB0VDT05PTVlyCExOQTVBMFRHCjEI1YIBEgM3NDYYQyCDaSjd3fwCMNXf_AI4TEABWAFqB0VDT05PTVlyCExOQTVBMFRHCjMI1YIBEgQ0NzA1GINpIOdqKIfg_AIwhuH8AjhMQAFYAWoHRUNPTk9NWXIITE5BNUEwVEcKowEKMwjVggESBDU1MTQY52ogg2kotJL9AjC1k_0COExAAFgBagdFQ09OT01ZcghMRkEyQURETgo1CMGGARIEMTAzOBiDaSCYzgEoyZX9AjCHl_0COEdAAVgBaghTVEFOREFSRHIIR05BNEEyVEcKNQjBhgESAzQ2NhiYzgEg2LMBKOaX_QIwqpj9AjhHQAFYAWoIU1RBTkRBUkRyCEdOQTRBMlRHEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Mon, Nov 10 - Sat, Nov 15 YOW Ottawa HLN Helena CA $916 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:HLN,departure:10/11/2025TANYT&leg2=from:HLN,to:YOW,departure:15/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:915.23&airProductToken=AQqhAQo1CNWCARIEODExMxjYswEgmM4BKOHb_AIwsdz8AjhMQABYAWoHRUNPTk9NWXIITE5BNUEwVEcKMwjVggESAzU2OBiYzgEgg2ko1t38AjDB3_wCOExAAVgBagdFQ09OT01ZcghMTkE1QTBURwozCNWCARIENDcwNRiDaSDnaiiH4PwCMIbh_AI4TEABWAFqB0VDT05PTVlyCExOQTVBMFRHCqMBCjMI1YIBEgQ1NTE0GOdqIINpKLSS_QIwtZP9AjhMQABYAWoHRUNPTk9NWXIITEZBMkFERE4KNQjBhgESBDEwMzgYg2kgmM4BKMmV_QIwh5f9AjhHQAFYAWoIU1RBTkRBUkRyCEdOQTRBMlRHCjUIwYYBEgM0NjYYmM4BINizASjml_0CMKqY_QI4R0ABWAFqCFNUQU5EQVJEcghHTkE0QTJURxIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Mon, Nov 10 - Sat, Nov 15 YOW Ottawa HLN Helena CA $917 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:HLN,departure:10/11/2025TANYT&leg2=from:HLN,to:YOW,departure:15/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:916.68&airProductToken=AQqdAQozCNWCARIEODQ4NhjYswEgQyiC2_wCMO_b_AI4TEAAWAFqB0VDT05PTVlyCExOQTVBMFRHCjEI1YIBEgM3NDYYQyCDaSjd3fwCMNXf_AI4TEABWAFqB0VDT05PTVlyCExOQTVBMFRHCjMI1YIBEgQ0NzA1GINpIOdqKIfg_AIwhuH8AjhMQAFYAWoHRUNPTk9NWXIITE5BNUEwVEcKogEKMwjVggESBDU1MTQY52ogg2kotJL9AjC1k_0COExAAFgBagdFQ09OT01ZcghMRkEyQURETgo0CNWCARIEODQyNhiDaSCYzgEoyZX9AjCHl_0COEdAAVgBagdFQ09OT01ZcghHTkE0QTJURwo1CNWCARIEODI0MxiYzgEg2LMBKOaX_QIwqpj9AjhHQAFYAWoHRUNPTk9NWXIIR05BNEEyVEcSCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Fri, Nov 14 - Wed, Nov 19 YOW Ottawa HLN Helena CA $924 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:HLN,departure:14/11/2025TANYT&leg2=from:HLN,to:YOW,departure:19/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:923.81&airProductToken=AQqjAQo1CNWCARIEMzY2NBjYswEgiBgo1Yf9AjDHiP0COE5AAFgBaghFQ09CQVNJQ3IIVE5BNEEwQk4KNAjVggESBDI4NTIYiBggg2koy4r9AjDBjP0COE5AAVgBaghFQ09CQVNJQ3IIVE5BNEEwQk4KNAjVggESBDQ3MDUYg2kg52ooh439AjCGjv0COE5AAVgBaghFQ09CQVNJQ3IIVE5BNEEwQk4KogEKNAjVggESBDU5MTEY52ogg2kogsP9AjCDxP0COE5AAFgBaghFQ09CQVNJQ3IIS05VNUEwQk4KMwjVggESAzM3NxiDaSCuHCjyxf0CMIfH_QI4TkABWAFqCEVDT0JBU0lDcghLTlU1QTBCTgo1CNWCARIEMzUzNhiuHCDYswEowMr9AjC-y_0COE5AAVgBaghFQ09CQVNJQ3IIS05VNUEwQk4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Nov 22 - Thu, Nov 27 YOW Ottawa HLN Helena CA $926 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:HLN,departure:22/11/2025TANYT&leg2=from:HLN,to:YOW,departure:27/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:925.70&airProductToken=AQqoAQo3CNWCARIEMzY2MxjYswEgrhwoquL9AjDL4_0COE5AAFgBagoxX2Jhc2ljZWNvcghMTkE1QTBCTgo1CNWCARIDNzY3GK4cIINpKIvk_QIwtOX9AjhOQABYAWoKMV9iYXNpY2Vjb3IITE5BNUEwQk4KNgjVggESBDQ3MDUYg2kg52ooh-f9AjCG6P0COE5AAFgBagoxX2Jhc2ljZWNvcghMTkE1QTBCTgqpAQo2CNWCARIENTUxNBjnaiCDaSi0mf4CMLWa_gI4TkAAWAFqCjFfYmFzaWNlY29yCExOQTVBMEJOCjYI1YIBEgQyMDg3GINpIIgYKJCb_gIw2Zz-AjhOQABYAWoKMV9iYXNpY2Vjb3IITE5BNUEwQk4KNwjVggESBDM0MTUYiBgg2LMBKLKd_gIwnZ7-AjhOQABYAWoKMV9iYXNpY2Vjb3IITE5BNUEwQk4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAL) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Sat, Nov 8 - Thu, Nov 13 YOW Ottawa HLN Helena CA $930 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:HLN,departure:08/11/2025TANYT&leg2=from:HLN,to:YOW,departure:13/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:929.91&airProductToken=AQqjAQo1CMGGARIDNDUxGNizASCYzgEoocX8AjDxxfwCOEdAAFgBaghTVEFOREFSRHIIR05BNEEyVEcKNQjBhgESBDQ4ODgYmM4BIINpKJbH_AIwgcn8AjhHQAFYAWoIU1RBTkRBUkRyCEdOQTRBMlRHCjMI1YIBEgQ0NzA1GINpIOdqKMfJ_AIwxsr8AjhWQAFYAWoHRUNPTk9NWXIIVkFBMkFERU4KogEKMwjVggESBDU5MTEY52ogg2kowv_8AjDDgP0COExAAFgBagdFQ09OT01ZcghMRkEyQURETgo0CNWCARIEMTc0NRiDaSDEjQEo-oP9AjDRhf0COEdAAVgBagdFQ09OT01ZcghHTkE0QTJURwo1CNWCARIEMzU5MhjEjQEg2LMBKNqI_QIwuIn9AjhHQAFYAWoHRUNPTk9NWXIIR05BNEEyVEcSCggBEAEYASoCQUMYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Nov 8 - Thu, Nov 13 YOW Ottawa HLN Helena CA $940 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:HLN,departure:08/11/2025TANYT&leg2=from:HLN,to:YOW,departure:13/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:939.15&airProductToken=AQqgAQo0CNWCARIEMzU4MRjYswEgrhwoyML8AjDpw_wCOFRAAFgBagdFQ09OT01ZcghUTkE0QTBURwozCNWCARIEMjEzMRiuHCCDaSiXxPwCML_F_AI4VEABWAFqB0VDT05PTVlyCFROQTRBMFRHCjMI1YIBEgQ1Mzg4GINpIOdqKOzF_AIw68b8AjhUQAFYAWoHRUNPTk9NWXIIVE5BNEEwVEcKogEKMwjVggESBDU5MTEY52ogg2kowv_8AjDDgP0COExAAFgBagdFQ09OT01ZcghMRkEyQURETgo0CNWCARIEMTc0NRiDaSDEjQEo-oP9AjDRhf0COEdAAVgBagdFQ09OT01ZcghHTkE0QTJURwo1CNWCARIEMzU5MhjEjQEg2LMBKNqI_QIwuIn9AjhHQAFYAWoHRUNPTk9NWXIIR05BNEEyVEcSCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Mon, Oct 27 - Sat, Nov 1 YOW Ottawa HLN Helena CA $943 Roundtrip found 2 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:HLN,departure:27/10/2025TANYT&leg2=from:HLN,to:YOW,departure:01/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:942.47&airProductToken=AQqdAQozCNWCARIEODQ4NhjYswEgQyiGvfsCMPO9-wI4R0AAWAFqB0VDT05PTVlyCEdOQTRBMlRHCjEI1YIBEgM3NDYYQyCDaSjhv_sCMNnB-wI4R0ABWAFqB0VDT05PTVlyCEdOQTRBMlRHCjMI1YIBEgQ0NzA1GINpIOdqKIvC-wIwisP7AjhWQAFYAWoHRUNPTk9NWXIIVkZBME9ERU4KnwEKMwjVggESBDU1MTQY52ogg2kouPT7AjC59fsCOExAAFgBagdFQ09OT01ZcghMRkEyQURETgoyCNWCARIDNzk4GINpIIgYKO34-wIwsfr7AjhHQAFYAWoHRUNPTk9NWXIIR05BNEEyVEcKNAjVggESBDM2MTgYiBgg2LMBKOT6-wIwyvv7AjhHQAFYAWoHRUNPTk9NWXIIR05BNEEyVEcSCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Nov 8 - Thu, Nov 13 YOW Ottawa HLN Helena CA $945 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:HLN,departure:08/11/2025TANYT&leg2=from:HLN,to:YOW,departure:13/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:944.81&airProductToken=AQqlAQo2CNWCARIEMzYyORjYswEgxI0BKLTC_AIwm8P8AjhOQABYAWoIRUNPQkFTSUNyCFROQTRBMEJOCjUI1YIBEgQyNDU1GMSNASCDaSiLxPwCMJ3G_AI4TkABWAFqCEVDT0JBU0lDcghUTkE0QTBCTgo0CNWCARIENDcwNRiDaSDnaijHyfwCMMbK_AI4TkABWAFqCEVDT0JBU0lDcghUTkE0QTBCTgqiAQo0CNWCARIENTkxMRjnaiCDaSjC__wCMMOA_QI4TkAAWAFqCEVDT0JBU0lDcghMTkE1QTBCTgozCNWCARIDMzc3GINpIK4cKLKC_QIwx4P9AjhOQAFYAWoIRUNPQkFTSUNyCExOQTVBMEJOCjUI1YIBEgQzNTM2GK4cINizASiAh_0CMP6H_QI4TkABWAFqCEVDT0JBU0lDcghMTkE1QTBCThIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Mon, Oct 27 - Sat, Nov 1 YOW Ottawa HLN Helena CA $952 Roundtrip found 2 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:HLN,departure:27/10/2025TANYT&leg2=from:HLN,to:YOW,departure:01/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:951.51&airProductToken=AQqdAQozCNWCARIEODQ4NhjYswEgQyiGvfsCMPO9-wI4R0AAWAFqB0VDT05PTVlyCEdOQTRBMlRHCjEI1YIBEgM3NDYYQyCDaSjhv_sCMNnB-wI4R0ABWAFqB0VDT05PTVlyCEdOQTRBMlRHCjMI1YIBEgQ0NzA1GINpIOdqKIvC-wIwisP7AjhWQAFYAWoHRUNPTk9NWXIIVkZBME9ERU4KowEKMwjVggESBDU1MTQY52ogg2kouPT7AjC59fsCOExAAFgBagdFQ09OT01ZcghMRkEyQURETgo1CMGGARIEMTAzOBiDaSCYzgEozff7AjCL-fsCOEdAAVgBaghTVEFOREFSRHIIR05BNEEyVEcKNQjBhgESAzQ3MBiYzgEg2LMBKNj6-wIwnPv7AjhHQAFYAWoIU1RBTkRBUkRyCEdOQTRBMlRHEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Nov 18 - Sun, Nov 23 YOW Ottawa HLN Helena CA $954 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:HLN,departure:18/11/2025TANYT&leg2=from:HLN,to:YOW,departure:23/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:953.85&airProductToken=AQqiAQo1CNWCARIEODI0MBjYswEgmM4BKLiy_QIwk7P9AjhLQABYAWoHRUNPTk9NWXIIS05VNUEwVEcKNAjVggESBDg2NTEYmM4BIINpKIq0_QIw87X9AjhLQAFYAWoHRUNPTk9NWXIIS05VNUEwVEcKMwjVggESBDUzODgYg2kg52oorLb9AjCrt_0COEtAAVgBagdFQ09OT01ZcghLTlU1QTBURwqgAQozCNWCARIENTkxMRjnaiCDaSiC8P0CMIPx_QI4TEAAWAFqB0VDT05PTVlyCExOQTVBMFRHCjMI1YIBEgQxOTI0GINpIIgYKMP0_QIwiPb9AjhMQAFYAWoHRUNPTk9NWXIITE5BNUEwVEcKNAjVggESBDQ0MjQYiBgg2LMBKMb5_QIwr_r9AjhMQAFYAWoHRUNPTk9NWXIITE5BNUEwVEcSCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Thu, Nov 13 - Tue, Nov 18 YOW Ottawa HLN Helena CA $959 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:HLN,departure:13/11/2025TANYT&leg2=from:HLN,to:YOW,departure:18/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:958.65&airProductToken=AQqpAQo3CNWCARIEMzU4MRjYswEgrhwo6Pr8AjCJ_PwCOE5AAFgBagoxX2Jhc2ljZWNvcghUTkE0QTBCTgo2CNWCARIEMjEzMRiuHCCDaSi3_PwCMN_9_AI4TkAAWAFqCjFfYmFzaWNlY29yCFROQTRBMEJOCjYI1YIBEgQ1Mzg4GINpIOdqKIz-_AIwi__8AjhOQABYAWoKMV9iYXNpY2Vjb3IIVE5BNEEwQk4KqwEKNgjVggESBDU1MTQY52ogg2kolLT9AjCVtf0COE5AAFgBagoxX2Jhc2ljZWNvcghLTlU1QTBCTgo3CNWCARIEMTI4MxiDaSDEjQEogbf9AjDhuP0COE5AAFgBagoxX2Jhc2ljZWNvcghLTlU1QTBCTgo4CNWCARIEMzUwNhjEjQEg2LMBKMa5_QIwsLr9AjhOQABYAWoKMV9iYXNpY2Vjb3IIS05VNUEwQk4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAL) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Thu, Nov 13 - Tue, Nov 18 YOW Ottawa HLN Helena CA $963 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:HLN,departure:13/11/2025TANYT&leg2=from:HLN,to:YOW,departure:18/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:962.89&airProductToken=AQqhAQo1CNWCARIEODExMxjYswEgmM4BKMH9_AIwkf78AjhMQABYAWoHRUNPTk9NWXIITE5BNUEwVEcKMwjVggESAzU2OBiYzgEgg2kotv_8AjChgf0COExAAVgBagdFQ09OT01ZcghMTkE1QTBURwozCNWCARIENDcwNRiDaSDnaijngf0CMOaC_QI4TEABWAFqB0VDT05PTVlyCExOQTVBMFRHCqIBCjMI1YIBEgQ1NTE0GOdqIINpKJS0_QIwlbX9AjhLQABYAWoHRUNPTk9NWXIIS05VNUEwVEcKNAjVggESBDg0MjYYg2kgmM4BKKm3_QIw57j9AjhLQAFYAWoHRUNPTk9NWXIIS05VNUEwVEcKNQjVggESBDgyNDMYmM4BINizASjGuf0CMIq6_QI4S0ABWAFqB0VDT05PTVlyCEtOVTVBMFRHEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Mon, Nov 17 - Sat, Nov 22 YOW Ottawa HLN Helena CA $966 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:HLN,departure:17/11/2025TANYT&leg2=from:HLN,to:YOW,departure:22/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:965.81&airProductToken=AQqdAQozCNWCARIEODQ4NhjYswEgQyjiqf0CMM-q_QI4TEAAWAFqB0VDT05PTVlyCExOQTVBMFRHCjEI1YIBEgM3NDYYQyCDaSi9rP0CMLWu_QI4TEABWAFqB0VDT05PTVlyCExOQTVBMFRHCjMI1YIBEgQ0NzA1GINpIOdqKOeu_QIw5q_9AjhMQAFYAWoHRUNPTk9NWXIITE5BNUEwVEcKnwEKMwjVggESBDU5MTEY52ogg2ko4uT9AjDj5f0COExAAFgBagdFQ09OT01ZcghMTkE1QTBURwoyCNWCARIDMzc3GINpIK4cKNLn_QIw5-j9AjhMQAFYAWoHRUNPTk9NWXIITE5BNUEwVEcKNAjVggESBDM1MzYYrhwg2LMBKKDs_QIwnu39AjhMQAFYAWoHRUNPTk9NWXIITE5BNUEwVEcSCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Nov 8 - Thu, Nov 13 YOW Ottawa HLN Helena CA $975 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:HLN,departure:08/11/2025TANYT&leg2=from:HLN,to:YOW,departure:13/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:974.85&airProductToken=AQqiAQo1CNWCARIEODI0MBjYswEgmM4BKPjB_AIw08L8AjhMQABYAWoHRUNPTk9NWXIITE5BNUEwVEcKNAjVggESBDg2NTEYmM4BIINpKMrD_AIws8X8AjhMQAFYAWoHRUNPTk9NWXIITE5BNUEwVEcKMwjVggESBDUzODgYg2kg52oo7MX8AjDrxvwCOExAAVgBagdFQ09OT01ZcghMTkE1QTBURwqfAQozCNWCARIENTkxMRjnaiCDaSjC__wCMMOA_QI4TEAAWAFqB0VDT05PTVlyCExOQTVBMFRHCjII1YIBEgMzNzcYg2kgrhwosoL9AjDHg_0COExAAVgBagdFQ09OT01ZcghMTkE1QTBURwo0CNWCARIEMzUzNhiuHCDYswEogIf9AjD-h_0COExAAVgBagdFQ09OT01ZcghMTkE1QTBURxIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAE) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Sat, Nov 8 - Thu, Nov 13 YOW Ottawa HLN Helena CA $980 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:HLN,departure:08/11/2025TANYT&leg2=from:HLN,to:YOW,departure:13/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:979.56&airProductToken=AQqjAQo1CMGGARIDNDQ3GNizASCYzgEouMT8AjCIxfwCOEdAAFgBaghTVEFOREFSRHIIR05BNEEyVEcKNQjBhgESBDQ4ODgYmM4BIINpKJbH_AIwgcn8AjhHQAFYAWoIU1RBTkRBUkRyCEdOQTRBMlRHCjMI1YIBEgQ0NzA1GINpIOdqKMfJ_AIwxsr8AjhWQAFYAWoHRUNPTk9NWXIIVkFBMkFERU4KogEKMwjVggESBDU5MTEY52ogg2kowv_8AjDDgP0COExAAFgBagdFQ09OT01ZcghMRkEyQURETgo0CNWCARIEMTc0NRiDaSDEjQEo-oP9AjDRhf0COEdAAVgBagdFQ09OT01ZcghHTkE0QTJURwo1CNWCARIEMzU5MhjEjQEg2LMBKNqI_QIwuIn9AjhHQAFYAWoHRUNPTk9NWXIIR05BNEEyVEcSCggBEAEYASoCQUMYASIECAEQASgCKAMoBDAB) ## Frequently asked questions ### How much is a flight from Macdonald-Cartier Intl. Airport (YOW) to Helena Regional Airport (HLN)? > Based on fares listed within the last 7 days on Expedia for flights departing within the next year, round-trip journeys from YOW to Helena Regional Airport (HLN) start from CA $872. Make your booking today to secure the best price for your adventure. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from Macdonald-Cartier Intl. Airport (YOW) to Helena Regional Airport (HLN)? > The majority of flights can be conveniently cancelled online, but whether you incur a fee differs between airlines. If you do need to cancel your escape, follow the instructions in the [Customer Service Portal](https://www.expedia.ca/helpcenter). ### How do I find cheap flights from YOW to Helena Regional Airport that have flexible change policies? > Use our "No change fees" filter to find flexible ticketing options for your flight from Macdonald-Cartier Intl. Airport (YOW) to Helena Regional Airport. This allows you to lock in a good price ahead of time and still have the freedom to make changes without any extra fees. You'll just need to pay the difference in fare. ### How far is the flight from Macdonald-Cartier Intl. Airport (YOW) to HLN? > It's around 2,800 kilometres from YOW to HLN, so expect to be strapped into your seat for a while. Keep yourself occupied with things like your e-reader or a good old-fashioned book. ### Which airlines fly direct from Ottawa International Airport to Helena Regional Airport? > If you want to travel straight from Macdonald-Cartier Intl. Airport (YOW) to Helena Regional Airport, you'll have to book a flight with at least one stop. Unfortunately, there aren't any airlines that fly directly on this route. ### Are Ottawa Intl. Airport to Helena Regional Airport flight tickets cheaper when they're purchased at the last minute? > Airline tickets from YOW to HLN are available up to 12 months before departure on Expedia. And although you may nab a great last-minute deal, it's never a sure thing. Also, booking your flights ahead of time means you'll have more options — and you can avoid being wedged in the dreaded middle seat! We're constantly updating our fares to bring you the biggest bargains, so keep checking in for all the latest specials. ## Travel information | Origin airport | Macdonald-Cartier Intl. | | --- | --- | | Destination airport | Helena Regional | | Roundtrip price | CA $871 | | Distance | 2769 km | ## Book with confidence ### Ottawa to Helena Flights **The easy way to book your flights from Ottawa to Helena**  With Expedia, it’s simple to find and book flights to Helena from Ottawa whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Helena Regional, too.   Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Ottawa to Helena today, tomorrow, or this week.   **Save dollars with cheap flights from Macdonald-Cartier Intl., YOW to Helena Regional, HLN**  Sort your search results by price to find great deals on your flight from Ottawa to Helena—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Helena from Ottawa currently is just CA $872 rising to CA $980.   Here are more money-saving tips:  - Fly in November when flight prices are normally at their lowest  - Book about a month to 6 weeks before you travel for the best prices to Helena   - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times  - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!  **Reasons to choose Expedia for your flight to Helena from Ottawa**  Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. 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