S$574 Cheap Flights from Montreal to London

Start packing your suitcase, because round-trip flights from YUL to Heathrow Airport start from S$824. That's based on fares advertised within the last 7 days on Expedia for flights departing within the next year. Prices can increase quickly, so book now to secure the best deal. Prices and availability are subject to change. Additional terms apply.

This can differ between air carriers, as each one has its own terms and conditions. Visit the Customer Service Portal, where there are instructions on how to cancel your flight online.

Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Pierre Elliott Trudeau Intl. Airport (YUL) to LHR flights, you'll see a "no change fees" filter for you to select.

The distance is around 5,200 kilometres, so pack your carry-on luggage with everything you need to make the long journey comfortable. Not sure what to take on board your Dorval to Hounslow flight? A sleep mask, earplugs and a neck pillow are a few essentials.

Air Canada (AC) is a popular choice. It operates 30 flights from Montréal–Trudeau to LHR each month. British Airways (BA) is also worth considering. It offers 30 flights a month. Between these two airlines, you'll be able to find a good deal from Dorval to Hounslow.

Flight prices are constantly going up and down, so there are no guarantees. While last-minute deals between Montréal–Trudeau and London Heathrow are possible, it's also a good idea to keep track of prices well before you fly. In fact, some air carriers advertise their prices up to a year prior to the departure date. Expedia is constantly updating the biggest airfare bargains around, so keep checking and be ready to grab your seat when the price is right.