Cheap flights from London Heathrow Airport to Cancún from £342

The cheapest month to fly to Cancún from London Heathrow Airport is in September. Flight prices, which tend to average around £544, are often lower during this time because this is during the off-season. If you don’t want to visit Cancún in September, then you should wait until November to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £568.

The cheapest day to depart from London Heathrow Airport to Cancún is on a Tuesday. Travellers who choose to depart for Cancún on a Tuesday will often find tickets for as low as £497. Flights from London Heathrow Airport to Cancún on a Saturday will generally be more expensive and average around £719. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

In the morning is the cheapest time of day to fly from London Heathrow Airport to Cancún when you can find flight prices for as low as £555. Flying to Cancún in the morning is an ideal time because this is during off-peak travel hours. Flights at midday are often more expensive, with an average ticket price of £707.

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 £678 when searching weeks before you fly. 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 £491 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 13% on your flight if you consider stops on a London Heathrow Airport to Cancún flight.

As of June 2026, prices for London Heathrow Airport to Cancún flights are approximately 28% cheaper when compared to flights at the same time last year.

SWISS, Avianca, and Lufthansa are the most popular carriers operating from London Heathrow to Cancun

Virgin Atlantic, Air Canada and United Airlines are the top three most popular airlines that fly to Cancún from London Heathrow Airport according to our data. Virgin Atlantic is the first choice among our users, with 55% of people opting to fly with this airline when travelling to Cancún. Keep in mind that there are 12 different airlines that fly to Cancún on a routine basis, so you have a few additional options to choose from.

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 departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Sunday is statistically the day of the week that experiences the fewest 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 fewest delays on this route over the last 12 months, with about 4% of their flights experiencing any sort of delay.

Mexico City (MEX) was the most common stop: 45% of momondo users choosing one-stop flights on this route connected there.

Flights via Dublin (DUB) offer the lowest average return price of £523.

Flights connecting via Montreal (YUL) have the shortest average one-way travel time: 13h 22m.

Mexico City (MEX) has the shortest average stopover time for this route: 1h 51m.