Cheap flights from London Heathrow Airport to Cancún from $428

If you don’t want to visit Cancún in September, then you should wait until March to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $759.

The cheapest day to depart from London Heathrow Airport to Cancún is on a Tuesday when prices can be found for as low as $703. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,098. These prices are subject to change though, so be sure to set up a Price Alert for flights to Cancún.

Our most recent data shows that the best time of day to fly to Cancún is in the morning. Flights from London Heathrow Airport to Cancún during this time can be as low as $840. Flights to Cancún are more costly in the afternoon, with an average ticket price of $1,958. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from London Heathrow to Cancun for the best London Heathrow - Cancun flight prices

You are more likely to see cheaper flights to Cancún from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Cancún for around $907 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Cancún from London Heathrow Airport for as low as $659 on momondo.

There are 2 cabin classes available to choose from on London Heathrow Airport to Cancún flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 60% on your flight if you consider stops on a London Heathrow Airport to Cancún flight.

As of July 2026, prices for London Heathrow Airport to Cancún flights are approximately 33% more expensive when compared to flights at the same time last year.

Historically, on average around 4% of flights between London and Cancún have experienced a delay on any given week. The average delay length over the past 12 months has been 117 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

Sunday is statistically the day of the week which experiences the fewest number of delays on this flight route. Wednesday has historically seen more delays on average compared to the rest of the week.

According to our data, Virgin Atlantic have had the least number of delays on this route over the last 12 months; with about 4% of their flights experiencing any sort of delay.