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Cheap flights from London Heathrow Airport to Cancún from £278

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CUN
28 May — 4 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Cancún

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Cancún
Explore the most affordable flight options available from Heathrow to Cancún. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 April 2026.

Thu 5/1109:50
LHR
-
CUN
1 stop15h 00m
Aer Lingus
Tue 17/1121:35
CUN
-
LHR
1 stop18h 30m
Aer Lingus
Deal found 25/4£552
Thu 29/1012:10
LHR
-
CUN
1 stop12h 40m
Aer Lingus
Thu 12/1121:35
CUN
-
LHR
1 stop13h 00m
Aer Lingus
Deal found 26/4£555
Thu 5/1112:10
LHR
-
CUN
1 stop12h 40m
Aer Lingus
Thu 19/1121:35
CUN
-
LHR
1 stop13h 00m
Aer Lingus
Deal found 27/4£560
Tue 24/1107:50
LHR
-
CUN
1 stop17h 00m
Aer Lingus
Tue 1/1221:35
CUN
-
LHR
1 stop18h 30m
Aer Lingus
Deal found 23/4£561
Tue 3/1112:10
LHR
-
CUN
1 stop12h 40m
Aer Lingus
Tue 17/1121:35
CUN
-
LHR
1 stop13h 00m
Aer Lingus
Deal found 26/4£563
Thu 28/519:10
LHR
-
CUN
1 stop29h 35m
Multiple Airlines
Tue 16/619:40
CUN
-
LHR
1 stop15h 35m
Multiple Airlines
Deal found 27/4£568
Sat 31/1009:50
LHR
-
CUN
1 stop15h 00m
Aer Lingus
Tue 10/1121:35
CUN
-
LHR
1 stop13h 00m
Aer Lingus
Deal found 25/4£589
Wed 11/1120:45
LHR
-
CUN
1 stop28h 05m
Aer Lingus
Sat 21/1121:35
CUN
-
LHR
1 stop13h 00m
Aer Lingus
Deal found 26/4£591

Find flight deals from Heathrow to Cancún

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Cancún (CUN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 28 April 2026.

Round-trip from

£568

One-way from

£278

Popular in

December

Cheapest in

September

Average price

£729

Good round-trip deal

£606 or less
28/5-16/6
  • 28/5-16/6
  • 2 total stops
  • 45h 10m total
  • London to Cancún
Search Deals
5/5
  • 5/5
  • 3 total stops
  • 46h 35m total
  • London to Cancún
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£5 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from London Heathrow to Cancun.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Cancún that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 28 April 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Cancún that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonCancún

LHR - CUN

LHRCUN

London Heathrow

Sun 10/5

09:40-20:16

2 stops16h 36m

Cancun

Mon 18/5

13:30-10:40

1 stop15h 10m

£679
Fastest return journey

LondonCancún

LHR - CUN

LHRCUN

London Heathrow

Sat 5/9

10:05-20:03

1 stop15h 58m

Cancun

Fri 18/9

15:00-11:15

1 stop14h 15m

£740

LondonCancún

LHR - CUN

LHRCUN

London Heathrow

Thu 28/5

06:30-20:16

2 stops19h 46m

Cancun

Thu 4/6

13:45-11:20

2 stops15h 35m

£766

LondonCancún

LHR - CUN

LHRCUN

London Heathrow

Thu 4/6

09:55-20:16

2 stops16h 21m

Cancun

Mon 8/6

12:50-08:50

1 stop14h 00m

£766

LondonCancún

LHR - CUN

LHRCUN

London Heathrow

Mon 11/5

06:15-20:16

2 stops20h 01m

Cancun

Mon 18/5

12:50-12:05

1 stop17h 15m

£781

LondonCancún

LHR - CUN

LHRCUN

London Heathrow

Mon 11/5

12:15-20:01

2 stops37h 46m

Cancun

Fri 22/5

12:04-10:05

2 stops40h 01m

£783

LondonCancún

LHR - CUN

LHRCUN

London Heathrow

Fri 18/9

20:25-16:40

2 stops26h 15m

Cancun

Fri 25/9

07:51-12:40

2 stops22h 49m

£812

LondonCancún

LHR - CUN

LHRCUN

London Heathrow

Tue 12/5

06:30-20:16

2 stops19h 46m

Cancun

Tue 19/5

12:45-10:40

2 stops15h 55m

£822

LondonCancún

LHR - CUN

LHRCUN

London Heathrow

Tue 9/6

14:10-09:50

2 stops25h 40m

Cancun

Tue 16/6

11:14-09:20

2 stops16h 06m

£823

LondonCancún

LHR - CUN

LHRCUN

London Heathrow

Tue 26/5

08:00-19:19

2 stops17h 19m

Cancun

Tue 9/6

07:51-08:20

2 stops18h 29m

£825

Flights are sorted by cheapest return flights first.

Deals found on 27/4

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Heathrow to Cancún

Have a flexible travel schedule? Discover the best time to fly to Cancún from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Cancún

How far ahead should I book a flight from London Heathrow Airport to Cancún?

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Cancún, you should look to book at least 84 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from London Heathrow Airport to Cancún?

Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Cancún (average of £538). Flying from London Heathrow Airport to Cancún in December is currently the most expensive (average of £853). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from London Heathrow Airport to Cancún?

Reviews of airlines servicing Cancún

Get insights into the airlines that provide service to Cancún. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Cancún. Reviews last updated 28 April 2026.
Read through reviews of airlines operating flights from London Heathrow Airport to Cancún, such as United Airlines,Virgin Atlantic, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,678 reviews
Check prices

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,678 reviews
United Airlines
7.4
Good
9,678 reviews
Check prices

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Virgin Atlantic
7.4
Good
688 reviews
United Airlines
7.4
Good
9,678 reviews
Check prices

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
American Airlines
7.1
Good
11,679 reviews
United Airlines
7.4
Good
9,678 reviews
Check prices

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Air Canada
7.1
Good
10,977 reviews
United Airlines
7.4
Good
9,678 reviews
Check prices

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
British Airways
6.7
Okay
7,931 reviews
United Airlines
7.4
Good
9,678 reviews
Check prices

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Cancún. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Cancún from London Heathrow?

    Cancun (CUN) is the airport you will fly into if you book a flight from London Heathrow to Cancún. You should not have trouble finding flights to Cancun from London Heathrow; the airport handles an average of 0 inbound flights from London Heathrow per day. You should also have plenty of airline options to choose from since 13 airlines have flights to the Cancún airport from London Heathrow. It is only a 8.9 mi journey from Cancun (CUN) to Cancún’s city center.

  • How long is the flight from London Heathrow Airport to Cancún?

    Departing from London Heathrow Airport to Cancún will take you 19h 46m. Airlines will cover a distance of 4938 mi.

  • What are the cheapest airlines flying from London Heathrow Airport to Cancún round-trip?

    Flying on KLM is currently your cheapest option to Cancún, with prices starting at £253. Additional return tickets that might be worth considering are offered by Aer Lingus and Air Canada, with the lowest prices starting at £442 and £448, respectively. These flights start at 61% lower than the current average price 3 months from now.

  • What are the cheapest flights from London Heathrow Airport to Cancún?

    The cheapest flight price from London Heathrow Airport to Cancún is £604. On average you can expect to pay £936. The most popular route, (London Heathrow - Cancun), can usually be booked for £665.

  • Can I find deals for flights from Heathrow to Cancún that include hotel bookings?

    Yes. In addition to deals on Heathrow to Cancún flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Cancún?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Cancún.

  • Can I find deals for business class flights from Heathrow to Cancún?

    Yes. Cheapflights offers flight deals from Heathrow to Cancún by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Heathrow Airport to Cancún?

    Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Cancún (average of £538). Flying from London Heathrow Airport to Cancún in December is currently the most expensive (average of £853). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Cancún?

Book flights to Cancún if you plan to visit one of these locations
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Fly from Heathrow to Cancún on these airlines

Choose from the following airlines for your flight from Heathrow to Cancún. Flights are based on user searches made on Cheapflights and were last updated on 28 April 2026.
Virgin Atlantic flights from London Heathrow to Cancun
United Airlines flights from London Heathrow to Cancun
British Airways flights from London Heathrow to Cancun

Top 10 airlines flying from Heathrow to Cancún

Discover the top 10 airlines that operate flights from Heathrow to Cancún. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 28 April 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£253Average£675FlexibilityNo cancel feeOn-time75%
Search KLM flights
Aer LingusCheapest£442Average£583FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Air CanadaCheapest£448Average£585FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Virgin AtlanticCheapest£455Average£609FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£465Average£628FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£488Average£734FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
FinnairCheapest£490Average£732FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Air FranceCheapest£498Average£776FlexibilityNo cancel feeOn-time77%
Search Air France flights
United AirlinesCheapest£523Average£737FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£526Average£735FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Cancún?

Deals for Heathrow to Cancún flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Cancún?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Cancún from Heathrow.

Can Cheapflights find flights from Heathrow to Cancún with no change fees?

Certainly. Search results for flights to Cancún from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Heathrow to Cancún become cheaper?

Not ready to book yet? You can track prices for flights from Heathrow to Cancún on Cheapflights with our Price Alert feature and get notified when better prices are available.

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