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United Airlines flights from London Heathrow Airport to Cancún (LHR - CUN)

LHR — CUN
12 Jul — 19 Jul1
1 adult
1 adult, Economy, 0 bags

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Cheapest United Airlines flights from Heathrow to Cancún
Explore the most affordable United Airlines flight options available from Heathrow to Cancún. Find the lowest fares with prices last updated on 12 June 2026.

Wed 24/616:40
LHR
-
CUN
2 stops23h 26m
United Airlines
Sun 28/615:24
CUN
-
LHR
1 stop14h 11m
United Airlines
Deal found 8/6£689
Wed 24/610:00
LHR
-
CUN
1 stop15h 19m
United Airlines
Mon 6/715:38
CUN
-
LHR
1 stop14h 17m
United Airlines
Deal found 8/6£694
Sat 20/610:00
LHR
-
CUN
1 stop15h 19m
United Airlines
Sun 28/615:43
CUN
-
LHR
1 stop14h 52m
United Airlines
Deal found 8/6£694

  • How do most travelers feel about United Airlines?

    Cheapflights users who travel with United Airlines (a popular airline from London Heathrow Airport to Cancún) have rated them a 7.4/10. This rating comes from 9,810 reviews. If you are looking to travel LHR-CUN, search your dates above.

  • Can I get a flight from London Heathrow Airport to Cancún on United Airlines for under £747?

    There are 3 flights available on United Airlines from London Heathrow Airport to Cancún for under £747. These prices can change based on many factors including date and time. To find LHR-CUN flight prices for your dates, click here.

United Airlines flights from Heathrow to Cancún in 2026

Find detailed information about United Airlines flights from Heathrow to Cancún. Explore the options provided by United Airlines to plan your journey from Heathrow to Cancún. Data last updated 12 June 2026.

One-way from

£703

Return from

£604

Popular in

December

Cheapest in

September

Average price (all airlines)

£730
United Airlines
  • United Airlines
  • 29/7
  • 1 total stop
  • 20h 33m total
  • London to Cancún
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United Airlines
  • United Airlines
  • 30/10-4/11
  • 4 total stops
  • 41h 30m total
  • London to Cancún
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Highest demand for flights from London Heathrow to Cancun; 0% potential price increase.
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Best time to find cheap flights from London Heathrow to Cancun; 3% potential price drop.
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Average price for all London Heathrow to Cancun flights (one-way and round-trip).
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Which month is the cheapest to fly Economy class from London Heathrow Airport to Cancún?

For Economy class flights, the cheapest month to fly this route is November. The most expensive months are December and April.

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.

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Other United Airlines flights from Heathrow

Browse through other United Airlines flights departing from Heathrow. Flight routes are based on user searches made on Cheapflights and were last updated on 12 June 2026.
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United Airlines flights from Heathrow to Cancún

See what others are saying about United Airlines

Read reviews and see what other travellers are saying about their experiences with United Airlines. Get insights from real passengers regarding the airline's services, customer satisfaction, and overall travel experience. Use these reviews to inform your decision when choosing United Airlines for your next flight. Reviews last updated 12 June 2026.
United Airlines
7.4
Good
9,813 reviews
Check prices
Overview

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

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