Cheap Flights from London to Montreal — $308

London is served by several airports that cater to different needs. Heathrow is the city’s main international hub and typically handles the bulk of long-haul and premium carriers; it’s about 15–20 miles west of central London and reachable by the Heathrow Express (15–20 minutes, premium fare), London Underground Piccadilly Line (45–60 minutes, lower cost) or taxi (30–60 minutes depending on traffic). Gatwick operates as a major secondary international airport popular with both full-service and many low-cost carriers; it’s roughly 25–30 miles south, connected by Gatwick Express (30 minutes), Thameslink/train services (30–45 minutes) and coaches, with fares varying by operator. Stansted and Luton are further out to the north-east and north-west and usually serve a high proportion of budget airlines; expect longer transfer times (Stansted 45–60 minutes by Stansted Express or coach; Luton 35–60 minutes by shuttle/train or coach) and generally lower fares on flights, balanced against extra road transfer time and occasional congestion. London City sits close to the financial district and is typically favored by business travellers and regional routes; it’s only 6–10 miles from central London, accessible by Docklands Light Railway (10–20 minutes) and taxis, and can be more convenient but sometimes costlier per ticket. Across the network, pros include wide carrier choice and frequent services; cons can be variable transfer times, busy terminals and different baggage/transfer rules between airports, so planning connections and transport options in advance is usually worthwhile.

Montréal–Pierre Elliott Trudeau International Airport (YUL) is the city’s main international gateway and typically handles a mix of full-service carriers and several low-cost and transatlantic operators, making it the primary choice for long-haul and connecting flights. It sits about 20–25 minutes by car (20–25 km) west of downtown Montréal; taxis and ride-hailing can take roughly 20–40 minutes depending on traffic, with fares that are usually moderate to high, while the dedicated 747 Express bus and airport shuttles run to central locations in roughly 45–60 minutes at lower cost. On balance YUL is convenient for international connections and offers more amenities, though it can be busier and slightly more expensive for taxis and on-site services. Montréal–Saint‑Hubert Longueuil Airport (YHU), on the South Shore, is often used for regional, general aviation and some budget services; it’s typically cheaper and less crowded but further from central Montréal by public transit and has fewer scheduled commercial options.

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The London — Montreal route is served by a wide range of airlines: 6 in total, including British Airways, Air Transat, Finnair, Air Canada, Ryanair, and EasyJet. Competition among carriers gives passengers the opportunity to find tickets at attractive fares — with prices starting from $308. Our service helps compare all available offers within seconds and choose the most convenient option. You can filter flights by price, departure time, or baggage rules to make your trip as comfortable as possible. With so many airlines, there’s always a chance to catch special promotions and save.