We've gone through lots of different flights, to help you find the cheapest way to get from London Heathrow to Cancun. You can choose from 12 airlines. At the moment, 14 / Jan / 2026 is the cheapest date to travel, but scroll through the results to find the option that works best for you.
The most popular airlines offering flights to Cancun are British Airways, Air Canada & Aeromexico. British Airways is the most popular one, but that doesn’t mean their flights will be the cheapest. If you can't find a flight time that suits you, why not look at flying out from a different airport?
Your flight from London Heathrow to Cancun will take at least 11 hrs 5 mins. On average, it takes 16 hrs 15 mins to fly the 7958 km distance. Take a look at flight times to see which one works best for you.
If you want to travel in March, it's best to book your flights early, as this is peak season in Cancun. The cheapest month to fly is normally September – try searching three to four months prior to then to get a bargain. You can also search by month, which will reveal the cheapest time of the week to fly.
