Title: CA $618 Cheap Flights from Great Falls (GTF) to Lisbon (LIS) - Expedia.ca ![Alfama Lisbon Cityscape](https://images.trvl-media.com/place/2080/038736b5-861a-47d0-a0cf-3fec8d44eb84.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/2080/038736b5-861a-47d0-a0cf-3fec8d44eb84.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # CA $618 Cheap Flights from Great Falls (GTF) to Lisbon (LIS) [View CA $618 flight on Sat, Feb 21, 2026](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:GTF,to:LIS,departure:21/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:617.25&airProductToken=AQqlAQo1CMSYARIEMzg1ORjmLCDyEij_44UDMOTkhQM4RUAAWAFqCU1BSU5CQVNJQ3IIVUxYNzlTQlUKNQjEmAESBDExNzIY8hIgqVEo7OuFAzCA7oUDOEVAAVgBaglNQUlOQkFTSUNyCFVMWDc5U0JVCjUIxJgBEgMyNzIYqVEgi5IBKIfyhQMwl_WFAzhFQAFYAWoJTUFJTkJBU0lDcghVTFg3OVNCVRIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) - [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 Great Falls, MT (GTF-Great Falls Intl.) to Humberto Delgado Airport (LIS) - ![](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:GTF,to:LIS,departure:23/02/2026TANYT&leg2=from:LIS,to:GTF,departure:02/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![](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:GTF,to:LIS,departure:23/02/2026TANYT&leg2=from:LIS,to:GTF,departure:02/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WS"}}]) - ![](https://a.travel-assets.com/air/airlines/f8_sq.svg) Flair Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:GTF,to:LIS,departure:23/02/2026TANYT&leg2=from:LIS,to:GTF,departure:02/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F8"}}]) - ![](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:GTF,to:LIS,departure:23/02/2026TANYT&leg2=from:LIS,to:GTF,departure:02/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![](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:GTF,to:LIS,departure:23/02/2026TANYT&leg2=from:LIS,to:GTF,departure:02/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![](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:GTF,to:LIS,departure:23/02/2026TANYT&leg2=from:LIS,to:GTF,departure:02/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![](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:GTF,to:LIS,departure:23/02/2026TANYT&leg2=from:LIS,to:GTF,departure:02/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"PD"}}]) - ![](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\* - ![](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\* - ![](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 Great Falls (GTF) to Lisbon (LIS) Prices were available within the past 7 days and start at CA $618 for one-way flights and CA $1,249 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, Feb 21 - Wed, Feb 25 GTF Great Falls LIS Lisbon CA $1,249 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:GTF,to:LIS,departure:21/02/2026TANYT&leg2=from:LIS,to:GTF,departure:25/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1248.25&airProductToken=AQqlAQo1CMSYARIEMzg1ORjmLCDyEij_44UDMOTkhQM4RUAAWAFqCU1BSU5CQVNJQ3IIVUxYNDBTQlUKNQjEmAESBDExNzIY8hIgqVEo7OuFAzCA7oUDOEVAAVgBaglNQUlOQkFTSUNyCFVMWDQwU0JVCjUIxJgBEgMyNzIYqVEgi5IBKIfyhQMwl_WFAzhFQAFYAWoJTUFJTkJBU0lDcghVTFg0MFNCVQqxAQpCCMSYARIEODQzORiLkgEg4jAoioqGAzCqi4YDOEVAAFgBaglNQUlOQkFTSUNyCFVMWDQwU0JVegoIwYwBEgQ4NDM5CjQIxJgBEgMyMjEY4jAg8hIo8IuGAzCJkYYDOEVAAVgBaglNQUlOQkFTSUNyCFVMWDQwU0JVCjUIxJgBEgQzODAwGPISIOYsKJqShgMwgZOGAzhFQAFYAWoJTUFJTkJBU0lDcghVTFg0MFNCVRIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, Feb 21 - Wed, Feb 25 GTF Great Falls LIS Lisbon CA $1,254 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:GTF,to:LIS,departure:21/02/2026TANYT&leg2=from:LIS,to:GTF,departure:25/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1253.45&airProductToken=AQqlAQo1CMSYARIEMzg1ORjmLCDyEij_44UDMOTkhQM4RUAAWAFqCU1BSU5CQVNJQ3IIVUxYNDBTQlUKNQjEmAESBDExNzIY8hIgqVEo7OuFAzCA7oUDOEVAAVgBaglNQUlOQkFTSUNyCFVMWDQwU0JVCjUIxJgBEgMyNzIYqVEgi5IBKIfyhQMwl_WFAzhFQAFYAWoJTUFJTkJBU0lDcghVTFg0MFNCVQqmAQo2CMSYARIDMTI1GIuSASDBkwEo44yGAzC5kIYDOEVAAFgBaglNQUlOQkFTSUNyCFVMWDQwU0JVCjUIxJgBEgM4NTkYwZMBIPISKP6XhgMw1pqGAzhFQAFYAWoJTUFJTkJBU0lDcghVTFg0MFNCVQo1CMSYARIEMzg1ORjyEiDmLCiJm4YDMPKbhgM4RUABWAFqCU1BSU5CQVNJQ3IIVUxYNDBTQlUSCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, Feb 21 - Wed, Feb 25 GTF Great Falls LIS Lisbon CA $1,331 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:GTF,to:LIS,departure:21/02/2026TANYT&leg2=from:LIS,to:GTF,departure:25/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1330.15&airProductToken=AQqyAQo1CMSYARIEMzg1ORjmLCDyEij_44UDMOTkhQM4RUAAWAFqCU1BSU5CQVNJQ3IIVUxXNDBTQlUKNAjEmAESAjU2GPISIICTASik5YUDMPzphQM4RUABWAFqCU1BSU5CQVNJQ3IIVUxXNDBTQlUKQwjEmAESBDk1NzYYgJMBIIuSASiX64UDMMvshQM4RUABWAFqCU1BSU5CQVNJQ3IIVUxXNDBTQlV6CgjLmAESBDk1NzYKsQEKQgjEmAESBDg0MzkYi5IBIOIwKIqKhgMwqouGAzhFQABYAWoJTUFJTkJBU0lDcghVTFg0MFNCVXoKCMGMARIEODQzOQo0CMSYARIDMjIxGOIwIPISKPCLhgMwiZGGAzhFQAFYAWoJTUFJTkJBU0lDcghVTFg0MFNCVQo1CMSYARIEMzg0NRjyEiDmLCjGlIYDMKmVhgM4RUABWAFqCU1BSU5CQVNJQ3IIVUxYNDBTQlUSCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, Feb 21 - Wed, Feb 25 GTF Great Falls LIS Lisbon CA $1,336 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:GTF,to:LIS,departure:21/02/2026TANYT&leg2=from:LIS,to:GTF,departure:25/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1335.35&airProductToken=AQqyAQo1CMSYARIEMzg1ORjmLCDyEij_44UDMOTkhQM4RUAAWAFqCU1BSU5CQVNJQ3IIVUxXNDBTQlUKNAjEmAESAjU2GPISIICTASik5YUDMPzphQM4RUABWAFqCU1BSU5CQVNJQ3IIVUxXNDBTQlUKQwjEmAESBDk1NzYYgJMBIIuSASiX64UDMMvshQM4RUABWAFqCU1BSU5CQVNJQ3IIVUxXNDBTQlV6CgjLmAESBDk1NzYKpgEKNgjEmAESAzEyNRiLkgEgwZMBKOOMhgMwuZCGAzhFQABYAWoJTUFJTkJBU0lDcghVTFg0MFNCVQo1CMSYARIDODU5GMGTASDyEij-l4YDMNaahgM4RUABWAFqCU1BSU5CQVNJQ3IIVUxYNDBTQlUKNQjEmAESBDM4NTkY8hIg5iwoiZuGAzDym4YDOEVAAVgBaglNQUlOQkFTSUNyCFVMWDQwU0JVEgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Sat, Feb 21 - Wed, Feb 25 GTF Great Falls LIS Lisbon CA $1,541 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:GTF,to:LIS,departure:21/02/2026TANYT&leg2=from:LIS,to:GTF,departure:25/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1540.45&airProductToken=AQqWAQowCMGmARIEMjQ0NBjmLCCSASi45oUDMKnnhQM4VkAAWAFqBE1BSU5yCFZMWDRUME01CjAIwYIBEgQyMzYxGJIBIO9ZKIHphQMwsuuFAzhWQAFYAWoETUFJTnIIVkxYNFQwTTUKMAjBggESAzI1OBjvWSCLkgEogvKFAzCh9YUDOFZAAVgBagRNQUlOcghWTFg0VDBNNQqWAQowCMGCARIDMjU5GIuSASDvWSjZjIYDMLmQhgM4U0AAWAFqBE1BSU5yCFNMWDRUME01CjAIwYIBEgQyMzYxGO9ZIJIBKMeShgMwxZWGAzhTQAFYAWoETUFJTnIIU0xYNFQwTTUKMAjBpgESBDMwMjcYkgEg5iwo8JyGAzDVnYYDOE5AAVgBagRNQUlOcghTTFg0VDBNNRIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Sat, Feb 21 - Wed, Feb 25 GTF Great Falls LIS Lisbon CA $1,555 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:GTF,to:LIS,departure:21/02/2026TANYT&leg2=from:LIS,to:GTF,departure:25/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1554.05&airProductToken=AQqWAQowCMGmARIEMjQ0NBjmLCCSASi45oUDMKnnhQM4VkAAWAFqBE1BSU5yCFZMWDRUME01CjAIwYIBEgQyMzYxGJIBIO9ZKIHphQMwsuuFAzhWQAFYAWoETUFJTnIIVkxYNFQwTTUKMAjBggESAzI1OBjvWSCLkgEogvKFAzCh9YUDOFZAAVgBagRNQUlOcghWTFg0VDBNNQquAQpBCMGyARIEMzc5NRiLkgEg71ko2YyGAzC5kIYDOFNAAFgBaghFQ0xBU1NJQ3IIU0xYNFQwTTV6CgjBggESBDM3OTUKMwjBpgESAzQ0MxjvWSCSASi4koYDMK2VhgM4U0ABWAFqCEVDTEFTU0lDcghTTFg0VDBNNQo0CMGmARIEMzAyNxiSASDmLCjwnIYDMNWdhgM4U0ABWAFqCEVDTEFTU0lDcghTTFg0VDBNNRIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Sat, Feb 21 - Wed, Feb 25 GTF Great Falls LIS Lisbon CA $1,701 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:GTF,to:LIS,departure:21/02/2026TANYT&leg2=from:LIS,to:GTF,departure:25/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1700.15&airProductToken=AQqxAQowCMGmARIEMjQ0NBjmLCCSASi45oUDMKnnhQM4VkAAWAFqBE1BSU5yCExMWDBDOU01Cj0IwYIBEgQ2OTA3GJIBIOuJASiq8oUDMOT2hQM4TEABWAFqBE1BSU5yCExMWDBDOU01egoIwoIBEgQ2OTA3Cj4IwYIBEgQ2NzA1GOuJASCLkgEo-veFAzCp-YUDOExAAVgBagRNQUlOcghMTFgwQzlNNXoKCMKCARIENjcwNQqWAQowCMGCARIDMjU5GIuSASDvWSjZjIYDMLmQhgM4U0AAWAFqBE1BSU5yCFNMWDRUME01CjAIwYIBEgQyMzYxGO9ZIJIBKMeShgMwxZWGAzhTQAFYAWoETUFJTnIIU0xYNFQwTTUKMAjBpgESBDMwMjcYkgEg5iwo8JyGAzDVnYYDOE5AAVgBagRNQUlOcghTTFg0VDBNNRIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Sat, Feb 21 - Wed, Feb 25 GTF Great Falls LIS Lisbon CA $1,714 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:GTF,to:LIS,departure:21/02/2026TANYT&leg2=from:LIS,to:GTF,departure:25/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1713.75&airProductToken=AQqxAQowCMGmARIEMjQ0NBjmLCCSASi45oUDMKnnhQM4VkAAWAFqBE1BSU5yCExMWDBDOU01Cj0IwYIBEgQ2OTA3GJIBIOuJASiq8oUDMOT2hQM4TEABWAFqBE1BSU5yCExMWDBDOU01egoIwoIBEgQ2OTA3Cj4IwYIBEgQ2NzA1GOuJASCLkgEo-veFAzCp-YUDOExAAVgBagRNQUlOcghMTFgwQzlNNXoKCMKCARIENjcwNQquAQpBCMGyARIEMzc5NRiLkgEg71ko2YyGAzC5kIYDOFNAAFgBaghFQ0xBU1NJQ3IIU0xYNFQwTTV6CgjBggESBDM3OTUKMwjBpgESAzQ0MxjvWSCSASi4koYDMK2VhgM4U0ABWAFqCEVDTEFTU0lDcghTTFg0VDBNNQo0CMGmARIEMzAyNxiSASDmLCjwnIYDMNWdhgM4U0ABWAFqCEVDTEFTU0lDcghTTFg0VDBNNRIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Sat, Feb 21 - Wed, Feb 25 GTF Great Falls LIS Lisbon CA $1,876 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:GTF,to:LIS,departure:21/02/2026TANYT&leg2=from:LIS,to:GTF,departure:25/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1875.25&airProductToken=AQqWAQowCMGmARIEMjQ0NBjmLCCSASi45oUDMKnnhQM4VkAAWAFqBE1BSU5yCFZMWDRUME01CjAIwYIBEgQyMzYxGJIBIO9ZKIHphQMwsuuFAzhWQAFYAWoETUFJTnIIVkxYNFQwTTUKMAjBggESAzI1OBjvWSCLkgEogvKFAzCh9YUDOFZAAVgBagRNQUlOcghWTFg0VDBNNQqxAQo-CMGCARIENzEyNBiLkgEg64kBKOmKhgMwnYyGAzhMQABYAWoETUFJTnIITExYMEM5TTV6CgjCggESBDcxMjQKPQjBggESBDY5MDgY64kBIJIBKL-OhgMwl5OGAzhMQAFYAWoETUFJTnIITExYMEM5TTV6CgjCggESBDY5MDgKMAjBpgESBDMwMjcYkgEg5iwo8JyGAzDVnYYDOFZAAVgBagRNQUlOcghMTFgwQzlNNRIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Sat, Feb 21 - Wed, Feb 25 GTF Great Falls LIS Lisbon CA $1,925 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:GTF,to:LIS,departure:21/02/2026TANYT&leg2=from:LIS,to:GTF,departure:25/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1924.75&airProductToken=AQquAQo0CMGmARIEMjQ0NBjmLCCSASi45oUDMKnnhQM4TUAAWAFqCEVDTEFTU0lDcghNTFgwQzlNNQozCMGmARIDNDQyGJIBIO9ZKOzthQMwnPCFAzhNQAFYAWoIRUNMQVNTSUNyCE1MWDBDOU01CkEIwbIBEgQzNzk0GO9ZIIuSASiC8oUDMKH1hQM4TUABWAFqCEVDTEFTU0lDcghNTFgwQzlNNXoKCMGCARIEMzc5NAqWAQowCMGCARIDMjU5GIuSASDvWSjZjIYDMLmQhgM4U0AAWAFqBE1BSU5yCFNMWDRUME01CjAIwYIBEgQyMzYxGO9ZIJIBKMeShgMwxZWGAzhTQAFYAWoETUFJTnIIU0xYNFQwTTUKMAjBpgESBDMwMjcYkgEg5iwo8JyGAzDVnYYDOE5AAVgBagRNQUlOcghTTFg0VDBNNRIKCAEQARgBKgJBWRgBIgQIARABKAIoAygEMAE) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Sat, Feb 21 - Wed, Feb 25 GTF Great Falls LIS Lisbon CA $1,939 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:GTF,to:LIS,departure:21/02/2026TANYT&leg2=from:LIS,to:GTF,departure:25/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1938.35&airProductToken=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) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Sat, Feb 21 - Wed, Feb 25 GTF Great Falls LIS Lisbon CA $2,035 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:GTF,to:LIS,departure:21/02/2026TANYT&leg2=from:LIS,to:GTF,departure:25/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:2034.95&airProductToken=AQqxAQowCMGmARIEMjQ0NBjmLCCSASi45oUDMKnnhQM4VkAAWAFqBE1BSU5yCExMWDBDOU01Cj0IwYIBEgQ2OTA3GJIBIOuJASiq8oUDMOT2hQM4TEABWAFqBE1BSU5yCExMWDBDOU01egoIwoIBEgQ2OTA3Cj4IwYIBEgQ2ODk4GOuJASCLkgEo7_mFAzCZ-4UDOExAAVgBagRNQUlOcghMTFgwQzlNNXoKCMKCARIENjg5OAqxAQo-CMGCARIENzA2MxiLkgEg64kBKMCMhgMw9I2GAzhMQABYAWoETUFJTnIITExYMEM5TTV6CgjCggESBDcwNjMKPQjBggESBDY5MDgY64kBIJIBKL-OhgMwl5OGAzhMQAFYAWoETUFJTnIITExYMEM5TTV6CgjCggESBDY5MDgKMAjBpgESBDMwMjcYkgEg5iwo8JyGAzDVnYYDOFZAAVgBagRNQUlOcghMTFgwQzlNNRIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, Feb 21 - Wed, Feb 25 GTF Great Falls LIS Lisbon CA $2,159 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:GTF,to:LIS,departure:21/02/2026TANYT&leg2=from:LIS,to:GTF,departure:25/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:2158.17&airProductToken=AQqlAQo1CMSYARIEMzg1ORjmLCDyEij_44UDMOTkhQM4RUAAWAFqCU1BSU5CQVNJQ3IIVUxYNzlTQlUKNQjEmAESBDExNzIY8hIgqVEo7OuFAzCA7oUDOEVAAVgBaglNQUlOQkFTSUNyCFVMWDc5U0JVCjUIxJgBEgMyNzIYqVEgi5IBKIfyhQMwl_WFAzhFQAFYAWoJTUFJTkJBU0lDcghVTFg3OVNCVRIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, Feb 21 - Wed, Feb 25 GTF Great Falls LIS Lisbon CA $2,208 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:GTF,to:LIS,departure:21/02/2026TANYT&leg2=from:LIS,to:GTF,departure:25/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:2207.14&airProductToken=AQqlAQo1CMSYARIEMzg1ORjmLCDyEij_44UDMOTkhQM4RUAAWAFqCU1BSU5CQVNJQ3IIVUxYNzlTQlUKNQjEmAESBDExNzIY8hIgqVEo7OuFAzCA7oUDOEVAAVgBaglNQUlOQkFTSUNyCFVMWDc5U0JVCjUIxJgBEgMyNzIYqVEgi5IBKIfyhQMwl_WFAzhFQAFYAWoJTUFJTkJBU0lDcghVTFg3OVNCVRIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) __Flight from Great Falls to Lisbon (GTF - LIS) route information__ | Origin airport | Great Falls Intl. | | ------------------- | ----------------- | | Destination airport | Humberto Delgado | | Roundtrip price | CA $1,248 | | Distance | 7684 km | ## Great Falls to Lisbon District Flights **The easy way to book your flights from Great Falls to Lisbon** With Expedia, it’s simple to find and book flights to Lisbon from Great Falls 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 Humberto Delgado, 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 Great Falls to Lisbon today, tomorrow, or this week. **Save dollars with cheap flights from Great Falls Intl., GTF to Humberto Delgado, LIS** Sort your search results by price to find great deals on your flight from Great Falls to Lisbon—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Lisbon from Great Falls currently is just CA $1,249 rising to CA $2,737\. Here are more money-saving tips: - Fly in February when flight prices are normally at their lowest - Book about a month to 6 weeks before you travel for the best prices to Lisbon - 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 Lisbon from Great Falls** 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. So book your flight to Lisbon with Expedia today. \*Available to Expedia members.