Title: CA $555 Cheap Air Transat fights from Montreal to London - 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 $555 Cheap Air Transat fights from Montreal (YMQ) to London (LON) [View CA $555 flight on Mon, Jul 20, 2026](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:YUL,to:LGW,departure:20/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:554.41&airProductToken=AQoxCi8I1KYBEgM3MjgYmF0gy7EBKP3ykgMwkvaSAzhQQABYAWoDQkdUcghQWkJHVDFDTxIKCAEQARgBKgJUUxgBIgQIARABKAIoAygEMA0) - [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 - ![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) ## Air Transat flights from Montreal to London (YMQ→LON) Prices were available within the past 7 days and start at CA $555 for one-way flights and CA $750 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Air Transat](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/TS.gif) Fri, Jan 16 - Wed, Jan 21 YUL Montreal LGW London CA $750 Roundtrip just found [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:LGW,departure:16/01/2026TANYT&leg2=from:LGW,to:YUL,departure:21/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:749.91&airProductToken=AQpuCjsI1KYBEgQ3NzI0GJhdIJjOASjSzoIDMK7PggM4WEAAWAFqA0JHVHIHWDBCR1Q0Q3oKCNCIARIENzcyNAovCNSmARIDMTIyGJjOASDLsQEo-9GCAzCp1YIDOFhAAVgBagNCR1RyB1gwQkdUNEMKbgovCNSmARIDMTIzGMuxASCYzgEonIODAzCQh4MDOFhAAFgBagNCR1RyB1gwQkdUNEMKOwjUpgESBDc4MTEYmM4BIJhdKJuPgwMw8I-DAzhYQAFYAWoDQkdUcgdYMEJHVDRDegoI0IgBEgQ3ODExEgoIARABGAEqAlRTGAEiBAgBEAEoAigDKAQwDQ) ![Air Transat](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/TS.gif) Sat, Feb 28 - Sat, Mar 7 YUL Montreal LGW London CA $770 Roundtrip just found [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:LGW,departure:28/02/2026TANYT&leg2=from:LGW,to:YUL,departure:07/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:769.91&airProductToken=AQpuCjsI1KYBEgQ3ODI4GJhdIJjOASjqtYYDMMa2hgM4UEAAWAFqA0JHVHIHWDBCR1Q0Q3oKCNCIARIENzgyOAovCNSmARIDMTIyGJjOASDLsQEo-8CGAzCpxIYDOFBAAVgBagNCR1RyB1gwQkdUNEMKYQovCNSmARIDMTIzGMuxASCYzgEovP2GAzCwgYcDOFZAAFgBagNCR1RyB1YwQkdUNEMKLgjUpgESAzQ3MRiYzgEgmF0omImHAzDtiYcDOFZAAVgBagNCR1RyB1YwQkdUNEMSCggBEAEYASoCVFMYASIECAEQASgCKAMoBDAN) ![Air Transat](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/TS.gif) Thu, May 7 - Fri, May 15 YUL Montreal LGW London CA $820 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YUL,to:LGW,departure:07/05/2026TANYT&leg2=from:LGW,to:YUL,departure:15/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:819.78&airProductToken=AQowCi4I1KYBEgM3MjgYmF0gy7EBKL2yjAMw0rWMAzhYQABYAWoDQkdUcgdYMEJHVDdDCjAKLgjUpgESAzcyORjLsQEgmF0om4WNAzDniI0DOFhAAFgBagNCR1RyB1gwQkdUN0MSCggBEAEYASoCVFMYASIECAEQASgCKAMoBDAN) ## Find the cheapest month to fly from Montreal (YMQ) to London (LON) ### September is typically the cheapest month to fly From CA $647 - CA $1,036 per traveller. ## 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:YUL,to:LHR,departure:03/01/2026TANYT&leg2=from:LHR,to:YUL,departure:07/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) LHR Heathrow 28 min [Flights from CA $2,010 ](https://www.expedia.ca/Flights-Search?leg1=from:YUL,to:LHR,departure:03/01/2026TANYT&leg2=from:LHR,to:YUL,departure:07/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) [](https://www.expedia.ca/Flights-Search?leg1=from:YUL,to:LGW,departure:03/01/2026TANYT&leg2=from:LGW,to:YUL,departure:07/01/2026TANYT&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 $1,602 ](https://www.expedia.ca/Flights-Search?leg1=from:YUL,to:LGW,departure:03/01/2026TANYT&leg2=from:LGW,to:YUL,departure:07/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) [](https://www.expedia.ca/Flights-Search?leg1=from:YUL,to:STN,departure:03/01/2026TANYT&leg2=from:STN,to:YUL,departure:13/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) STN Stansted 51 min [Flights from CA $3,164 ](https://www.expedia.ca/Flights-Search?leg1=from:YUL,to:STN,departure:03/01/2026TANYT&leg2=from:STN,to:YUL,departure:13/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) [](https://www.expedia.ca/Flights-Search?leg1=from:YUL,to:LCY,departure:03/01/2026TANYT&leg2=from:LCY,to:YUL,departure:13/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) LCY London City Closest 21 min [Flights from CA $5,388 ](https://www.expedia.ca/Flights-Search?leg1=from:YUL,to:LCY,departure:03/01/2026TANYT&leg2=from:LCY,to:YUL,departure:13/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) __Flight from Montreal to London (YUL - LGW) route information__ | Origin airport | Pierre Elliott Trudeau Intl. | | ------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Destination airport | Gatwick | | Airlines serving | Aer Lingus, Air Canada, Air France, Air Transat, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, KLM, Lufthansa, Porter Airlines, Royal Air Maroc, SATA International-Azores Airlines S.A., Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, United, Virgin Atlantic | | Popular airline | TAP Portugal | | Distance | 5217 km | \*Available to Expedia members.