Title: CA $615 Cheap Flights from Ottawa (YOW) to London (LHR) - Expedia.ca ![](https://images.trvl-media.com/place/178279/2a1d5619-553b-468a-a773-e81b88024741.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178279/2a1d5619-553b-468a-a773-e81b88024741.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # CA $615 Cheap Flights from Ottawa (YOW) to London (LHR) [View CA $615 flight on Wed, Mar 18, 2026](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:YOW,to:LHR,departure:18/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:614.62&airProductToken=AQo0CjIIwYYBEgM4ODgY2LMBIOuJASivgIgDMLCDiAM4S0AAWAFqBUJBU0lDcghLTDdBWFVCURIKCAIQARgCKgJBQxgBIgQIARABKAIoAygEMA0) - [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 Heathrow Airport (LHR) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LH.svg) Lufthansa [](https://www.expedia.ca/Flights-Search?leg1=from:YOW,to:LHR,departure:18/03/2026TANYT&leg2=from:LHR,to:YOW,departure:25/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LH"}}]) - ![](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:LHR,departure:18/03/2026TANYT&leg2=from:LHR,to:YOW,departure:25/03/2026TANYT&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_EI.svg) Aer Lingus [](https://www.expedia.ca/Flights-Search?leg1=from:YOW,to:LHR,departure:18/03/2026TANYT&leg2=from:LHR,to:YOW,departure:25/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"EI"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_VS.svg) Virgin Atlantic [](https://www.expedia.ca/Flights-Search?leg1=from:YOW,to:LHR,departure:18/03/2026TANYT&leg2=from:LHR,to:YOW,departure:25/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"VS"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LO.svg) LOT-Polish Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:YOW,to:LHR,departure:18/03/2026TANYT&leg2=from:LHR,to:YOW,departure:25/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LO"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LX.svg) Swiss International Air Lines [](https://www.expedia.ca/Flights-Search?leg1=from:YOW,to:LHR,departure:18/03/2026TANYT&leg2=from:LHR,to:YOW,departure:25/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LX"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_TP.svg) TAP Portugal [](https://www.expedia.ca/Flights-Search?leg1=from:YOW,to:LHR,departure:18/03/2026TANYT&leg2=from:LHR,to:YOW,departure:25/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"TP"}}]) - ![](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 Ottawa (YOW) to London (LHR) Prices were available within the past 7 days and start at CA $615 for one-way flights and CA $795 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Sun, May 24 - Sun, Jun 14 YOW Ottawa LHR London CA $795 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:LHR,departure:24/05/2026TANYT&leg2=from:LHR,to:YOW,departure:14/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:794.57&airProductToken=AQqGAQpBCMyQARIENjU2MRjYswEgmF0o3u-NAzCP8I0DOEtAAFgBaghFQ09MSUdIVHIIS0oxQVhEQlF6CgjBhgESBDY1NjEKQQjMkAESBDY0ODAYmF0g64kBKNPxjQMw4_SNAzhLQAFYAWoIRUNPTElHSFRyCEtKMUFYREJRegoIwYYBEgQ2NDgwCmcKMQjBhgESAzg2NRjriQEgmF0o8dePAzC4248DOEtAAFgBagVCQVNJQ3IIS0oxQVhEQlEKMgjBhgESBDc3NzcYmF0g2LMBKNDdjwMwg96PAzhLQAFYAWoFQkFTSUNyCEtKMUFYREJREgoIAhABGAIqAkFDGAEiBAgBEAEoAigDKAQwAQ) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Tue, May 26 - Tue, Jun 16 YOW Ottawa LHR London CA $798 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:LHR,departure:26/05/2026TANYT&leg2=from:LHR,to:YOW,departure:16/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:797.97&airProductToken=AQpoCjIIwYYBEgM0NjEY2LMBIJjOASiwhY4DMPaFjgM4S0AAWAFqBUJBU0lDcghLSjFBWERCUQoyCMGGARIDODU2GJjOASDriQEor4eOAzDnio4DOEtAAVgBagVCQVNJQ3IIS0oxQVhEQlEKuwEKNAjMsAESAzM1ORjriQEgpgUoiOuPAzDn648DOEtAAFgBaghFQ09MSUdIVHIIS0oxQVhEQlEKQAjMsAESBDQ2NDIYpgUgmF0ooO2PAzCA8Y8DOEtAAVgBaghFQ09MSUdIVHIIS0oxQVhEQlF6CgjBhgESBDQ2NDIKQQjMsAESBDQ2MzUYmF0g2LMBKMDzjwMw8_OPAzhLQAFYAWoIRUNPTElHSFRyCEtKMUFYREJRegoIwYYBEgQ0NjM1EgoIAhABGAIqAkFDGAEiBAgBEAEoAigDKAQwAQ) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Wed, Jun 3 - Wed, Jun 10 YOW Ottawa LHR London CA $809 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:LHR,departure:03/06/2026TANYT&leg2=from:LHR,to:YOW,departure:10/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:808.67&airProductToken=AQo0CjIIwYYBEgM4ODgY2LMBIOuJASjc4Y4DMOfkjgM4S0AAWAFqBUJBU0lDcghLSjFBWERCUQpECkIIzJABEgQ2NjkyGOuJASDYswEo9qqPAzDRro8DOEtAAFgBaghFQ09MSUdIVHIIS0oxQVhEQlF6CgjBhgESBDY2OTISCggCEAEYAioCQUMYASIECAEQASgCKAMoBDAB) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Fri, May 29 - Mon, Jun 8 YOW Ottawa LHR London CA $816 Roundtrip found 2 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:LHR,departure:29/05/2026TANYT&leg2=from:LHR,to:YOW,departure:08/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:815.42&airProductToken=AQpoCjIIwYYBEgM0NDcY2LMBIJjOASjso44DMLKkjgM4S0AAWAFqBUJBU0lDcghLSjFBWERCUQoyCMGGARIDODU0GJjOASDriQEopqiOAzDPq44DOEtAAVgBagVCQVNJQ3IIS0oxQVhEQlEKuwEKNAjMsAESAzM1ORjriQEgpgUoiJGPAzDnkY8DOEtAAFgBaghFQ09MSUdIVHIIS0oxQVhEQlEKQAjMsAESBDQ2NDIYpgUgmF0ooJOPAzCPl48DOEtAAVgBaghFQ09MSUdIVHIIS0oxQVhEQlF6CgjBhgESBDQ2NDIKQQjMsAESBDQ2MzUYmF0g2LMBKMCZjwMw85mPAzhLQAFYAWoIRUNPTElHSFRyCEtKMUFYREJRegoIwYYBEgQ0NjM1EgoIAhABGAIqAkFDGAEiBAgBEAEoAigDKAQwAQ) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Sun, May 17 - Tue, Jun 2 YOW Ottawa LHR London CA $820 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:LHR,departure:17/05/2026TANYT&leg2=from:LHR,to:YOW,departure:02/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:819.42&airProductToken=AQqGAQpBCMyQARIENjU4MRjYswEgmF0ou5-NAzDsn40DOEtAAFgBaghFQ09MSUdIVHIIS0oxQVhEQlF6CgjBhgESBDY1ODEKQQjMkAESBDY4MzkYmF0g64kBKLChjQMwyqSNAzhLQAFYAWoIRUNPTElHSFRyCEtKMUFYREJRegoIwYYBEgQ2ODM5CmkKMgjBhgESAzg2ORjriQEg-MkBKJzQjgMwrNOOAzhLQABYAWoFQkFTSUNyCEtKMUFYREJRCjMIwYYBEgQ3NjkxGPjJASDYswEopNSOAzCp1Y4DOEtAAVgBagVCQVNJQ3IIS0oxQVhEQlESCggCEAEYAioCQUMYASIECAEQASgCKAMoBDAB) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Tue, May 19 - Tue, Jun 2 YOW Ottawa LHR London CA $821 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:LHR,departure:19/05/2026TANYT&leg2=from:LHR,to:YOW,departure:02/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:820.92&airProductToken=AQqFAQpBCMyQARIENjU2MRjYswEgmF0ovreNAzDvt40DOEtAAFgBaghFQ09MSUdIVHIIS0oxQVhEQlF6CgjBhgESBDY1NjEKQAjMkAESBDY4MzcYmF0g64kBKMK5jQMw3LyNAzhLQAFYAWoIRUNPTElHSFRyCEtKMUFYREJRegkIwYYBEgM4NjQKaQoyCMGGARIDODY5GOuJASD4yQEonNCOAzCs044DOEtAAFgBagVCQVNJQ3IIS0oxQVhEQlEKMwjBhgESBDc2OTEY-MkBINizASik1I4DMKnVjgM4S0ABWAFqBUJBU0lDcghLSjFBWERCURIKCAIQARgCKgJBQxgBIgQIARABKAIoAygEMAE) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Tue, May 19 - Tue, Jun 2 YOW Ottawa LHR London CA $823 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:LHR,departure:19/05/2026TANYT&leg2=from:LHR,to:YOW,departure:02/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:822.22&airProductToken=AQpnCjIIwYYBEgQ4MDEwGNizASCYXSiUto0DMMW2jQM4S0AAWAFqBUJBU0lDcghLSjFBWERCUQoxCMGGARIDODY2GJhdIOuJASjwt40DMIq7jQM4S0ABWAFqBUJBU0lDcghLSjFBWERCUQq6AQo0CMywARIDMzU5GOuJASCmBSjIzY4DMKfOjgM4S0AAWAFqCEVDT0xJR0hUcghLSjFBWERCUQo_CMywARIENDY0MhimBSCYXSjgz44DMM_TjgM4S0ABWAFqCEVDT0xJR0hUcghLSjFBWERCUXoJCMGGARIDODg1CkEIzLABEgQ0NjM1GJhdINizASiA1o4DMLPWjgM4S0ABWAFqCEVDT0xJR0hUcghLSjFBWERCUXoKCMGGARIENDYzNRIKCAIQARgCKgJBQxgBIgQIARABKAIoAygEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sun, May 31 - Sun, Jun 14 YOW Ottawa LHR London CA $844 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:LHR,departure:31/05/2026TANYT&leg2=from:LHR,to:YOW,departure:14/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:843.83&airProductToken=AQptCjUI1YIBEgQ0NDU1GNizASCIGCiiv44DMInAjgM4S0AAWAFqCEVDT0JBU0lDcghLSjFBWERCUQo0CNWCARIDOTI0GIgYIOuJASjHwI4DMITEjgM4S0ABWAFqCEVDT0JBU0lDcghLSjFBWERCUQqzAQpCCNWCARIEOTkyNBjriQEgoaQBKL7UjwMw_9SPAzhLQABYAWoIRUNPQkFTSUNyCEtKMUFYREJRegoI05wBEgQ5OTI0CjUI1YIBEgM5OTUYoaQBIMSNASiG1o8DMObZjwM4S0ABWAFqCEVDT0JBU0lDcghLSjFBWERCUQo2CNWCARIEMzUwNhjEjQEg2LMBKJjdjwMw_d2PAzhLQAFYAWoIRUNPQkFTSUNyCEtKMUFYREJREgoIAhABGAIqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![Swiss International Air Lines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LX.gif) Sun, May 10 - Tue, Jun 2 YOW Ottawa LHR London CA $959 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:LHR,departure:10/05/2026TANYT&leg2=from:LHR,to:YOW,departure:02/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:958.22&airProductToken=AQq6AQpBCMywARIENDY1NxjYswEgmF0ontKMAzDP0owDOEtAAFgBaghFQ09MSUdIVHIIS0oxQVhVQlF6CgjBhgESBDQ2NTcKPwjMsAESBDQ2NDMYmF0gpgUoudOMAzD71owDOEtAAVgBaghFQ09MSUdIVHIIS0oxQVhVQlF6CQjBhgESAzg4NAo0CMywARIDMzU0GKYFIOuJASiv2IwDMJjZjAM4S0ABWAFqCEVDT0xJR0hUcghLSjFBWFVCUQq7AQo0CMywARIDMzU5GOuJASCmBSjIzY4DMKfOjgM4S0AAWAFqCEVDT0xJR0hUcghLSjFBWERCUQpACMywARIENDY0MhimBSCYXSjgz44DMM_TjgM4S0ABWAFqCEVDT0xJR0hUcghLSjFBWERCUXoKCMGGARIENDY0MgpBCMywARIENDYzNRiYXSDYswEogNaOAzCz1o4DOEtAAVgBaghFQ09MSUdIVHIIS0oxQVhEQlF6CgjBhgESBDQ2MzUSCggCEAEYAioCTFgYASIECAEQASgCKAMoBDAB) ![Virgin Atlantic](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/VS.gif) Tue, May 5 - Tue, May 12 YOW Ottawa LHR London CA $961 Roundtrip found 13 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YOW,to:LHR,departure:05/05/2026TANYT&leg2=from:LHR,to:YOW,departure:12/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:960.42&airProductToken=AQqAAQo-CNamARIENjY3NBjYswEg4jAo1pmMAzDwnIwDOFRAAFgBagVMSUdIVHIIT0xONzJMQlR6CgjBjAESBDY2NzQKPgjWpgESBDY2NjIY4jAg64kBKMqdjAMwn56MAzhUQAFYAWoFTElHSFRyCE9MTjcyTEJUegoIwYwBEgQ2NjYyCoABCj4I1qYBEgQ2NjU5GOuJASDiMCj74IwDMNDhjAM4VEAAWAFqBUxJR0hUcghPTE43MkxCVHoKCMGMARIENjY1OQo-CNamARIENjY3NRjiMCDYswEo3uOMAzC054wDOFRAAVgBagVMSUdIVHIIT0xONzJMQlR6CgjBjAESBDY2NzUSCggBEAEYASoCVlMYASIECAEQASgCKAMoBDAB) ![](https://forever.travel-assets.com/flex/flexmanager/images/2026/02/06/expedia-sale-2026-desktop-us-ca.jpg?impolicy=fcrop&w=1400&h=600&q=mediumHigh) ## The Annual Vacation Sale Members save up to 40% on hotels and homes. Plan this year’s big trip and save. [Book now](https://expedia.ca/deals?rfrr=FTG_SPRING_PROMO_) ## Alternative airports near London Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.ca/Flights-Search?leg1=from:YOW,to:LGW,departure:18/03/2026TANYT&leg2=from:LGW,to:YOW,departure:12/05/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) LGW Gatwick Cheapest 52 min [Flights from CA $784 ](https://www.expedia.ca/Flights-Search?leg1=from:YOW,to:LGW,departure:18/03/2026TANYT&leg2=from:LGW,to:YOW,departure:12/05/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ## Find the cheapest month to fly from Ottawa (YOW) to London (LHR) ### November is typically the cheapest month to fly From CA $784 - CA $1,684 per traveller. ## Frequently asked questions ### How much is a flight from Ottawa International Airport to Heathrow Airport? ### Do I need to pay a cancellation fee if I cancel my flight from YOW to Heathrow Airport? ### How do I find cheap flights from Ottawa Intl. Airport to LHR that have flexible change policies? ### How many hours is the flight from Macdonald-Cartier Intl. Airport (YOW) to Heathrow Airport (LHR)? ### How far is the flight from YOW to Heathrow Airport? ### Which airlines fly direct from Macdonald-Cartier Intl. Airport (YOW) to Heathrow Airport? ### Are YOW to LHR flight tickets cheaper when they're purchased at the last minute? ## Travel information | Origin airport | Macdonald-Cartier Intl. | | ------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Destination airport | Heathrow | | Airlines serving | Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, Brussels Airlines, ITA Airways, KLM, LOT-Polish Airlines, Lufthansa, Swiss International Air Lines, TAP Portugal, United, Virgin Atlantic | | Roundtrip price | CA $795 | | Distance | 5315 km | | Average flight time | 6 hours 25 mins | ## Book with confidence # Ottawa to London Flights **The easy way to book your flights from Ottawa to London** With Expedia, it’s simple to find and book flights to London 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 Heathrow, 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 London today, tomorrow, or this week. **Save dollars with cheap flights from Macdonald-Cartier Intl., YOW to Heathrow, LHR** Sort your search results by price to find great deals on your flight from Ottawa to London—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to London from Ottawa currently is just CA $795 rising to CA $961\. Here are more money-saving tips: - Fly in May when flight prices are normally at their lowest - Book about a month to 6 weeks before you travel for the best prices to London - 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 London 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. So book your flight to London with Expedia today. ## Explore a world of travel with Expedia - Flights - [Flights from Hanoi to Kingston Upon Thames ](https://www.expedia.ca/lp/flights/1428/4380/hanoi-to-kingston-upon-thames) - [Flights from Atlanta to West London ](https://www.expedia.ca/lp/flights/178232/6047457/atlanta-to-west-london) - [Flights from Atlanta to North London ](https://www.expedia.ca/lp/flights/178232/6196832/atlanta-to-north-london) - [Flights from Auckland to Windsor ](https://www.expedia.ca/lp/flights/178233/5479/auckland-to-windsor) - [Flights from Indianapolis to Windsor ](https://www.expedia.ca/lp/flights/178266/5479/indianapolis-to-windsor) - [Flights from Sydney to Windsor ](https://www.expedia.ca/lp/flights/178312/5479/sydney-to-windsor) - [Flights from Vancouver to Kingston Upon Thames ](https://www.expedia.ca/lp/flights/178315/4380/vancouver-to-kingston-upon-thames) - [Flights from Vancouver to Windsor ](https://www.expedia.ca/lp/flights/178315/5479/vancouver-to-windsor) - 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