The usual round-trip price from Montreal to London Gatwick is about $969 CAD, based on all of our scans. The lowest price we have recorded is $667 CAD, which is 31% below the usual price. Departures in November are cheapest on average ($900 CAD) and departures in December the most expensive ($1198 CAD). Prices vary moderately on this route depending on the departure date and when you book. The usual price to London Gatwick is lower than that of 87% of the 31 destinations we track in Western Europe from Montreal.
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When to fly from Montreal to London Gatwick? Average price per day
Average round-trip price per departure date, all trip lengths, from all of our scans. Green line: the average price across all of our scans. Black dot: the cheapest day.
Oct 22, 2026 is the cheapest departure date from Montreal to London Gatwick in our scans: $837 CAD on average, across all trip lengths and all prices recorded over time.
When to book a flight from Montreal to London Gatwick? Price by time before departure
Average round-trip price by how many weeks before departure the price was recorded. Read left to right: as departure gets closer, the price moves. Black dot: the cheapest lead time.
This chart is the average of all prices recorded over time, with all departure dates mixed together. It blends cheap and expensive departures (seasons), which is why its lowest point is much higher than the cheapest day in the previous chart. The next chart isolates the effect of when you book.
When to book a flight from Montreal to London Gatwick? Difference from the normal price
Each recorded price is compared to the average price of its own departure date, which removes the effect of seasons. Read left to right up to departure: below the green line means cheaper than usual for that date. Black dot: the cheapest lead time.
Example: -10% means that at that point, the price is on average 10% below the usual price for the same departure date.
FAQ: flights Montreal → London Gatwick
Is the best price from Montreal to London Gatwick really a good deal?
The average price across all of our Montreal → London Gatwick scans is $969 CAD. Our best spotted price, $667 CAD, is 31% below that average.
When is the cheapest time to fly from Montreal to London Gatwick?
Based on our daily scans, departures from Montreal to London Gatwick in November are the cheapest (average $900 CAD) and departures in December the most expensive ($1198 CAD). The chart above shows the average price day by day for the coming year.
How far in advance should I book a flight from Montreal to London Gatwick?
Based on our scans, prices for flights from Montreal to London Gatwick are lowest about 16 weeks before departure (-4% versus the normal price for the same departure date). In the final 2 weeks before departure, the difference is +18%. See the last chart above.
How long does a deal from Montreal to London Gatwick last?
Fare deals disappear fast: we treat a deal as active for 48 hours after it is sent. After that the price may have changed.
How do I get alerted when fares from Montreal to London Gatwick drop?
Subscribe to En Plein Vol for free: we email flight deals from Montreal as soon as they are spotted.
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