AirHint found the following cheapest return flights from Cancun (CUN) to London (LHR) in March 2026 (see full year).

Return flights

28 Mar - 12 Apr	Aer Lingus
26 Mar - 11 Apr	Aer Lingus
10 Mar - 18 Mar	Spirit Airlines
26 Mar - 10 Apr	Aer Lingus
26 Mar - 12 Apr	Aer Lingus
10 Mar - 19 Mar	TAP
31 Mar - 11 Apr	jetBlue
28 Mar - 11 Apr	Aer Lingus
04 Mar - 19 Mar	Air France
09 Mar - 16 Mar	Air France
03 Mar - 10 Mar	Spirit Airlines
02 Mar - 09 Mar	Delta
24 Mar - 28 Apr	Aer Lingus
18 Mar - 23 Mar	Air Caraibes
06 Mar - 15 Mar	Frontier Airlines
11 Mar - 14 Mar	Air Caraibes
08 Mar - 11 Mar	Aeromexico
28 Mar - 09 Apr	Aer Lingus
30 Mar - 09 Apr	Aer Lingus
18 Mar - 01 Apr	Air France

Also check the deals for one-way flights from Cancun to London in March.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Cancun to London in March from $831

Return flights