Cheapest return flights from San Diego to London in April from $610

AirHint found the following cheapest return flights from San Diego (SAN) to London (LGW) in April 2026 (see full year).

Return flights

29 Apr - 13 May Alaska Airlines
01 Apr - 12 Apr Frontier Airlines
01 Apr - 13 Apr Hawaiian Airlines
21 Apr - 26 Apr Frontier Airlines
22 Apr - 06 May SWISS
23 Apr - 04 May Lufthansa
09 Apr - 13 Apr Frontier Airlines
09 Apr - 29 Apr Frontier Airlines
27 Apr - 08 May Alaska Airlines
23 Apr - 05 May SWISS
23 Apr - 06 May SWISS
26 Apr - 01 May Lufthansa
09 Apr - 01 May Frontier Airlines
16 Apr - 28 Apr Icelandair
06 Apr - 20 May Iberia

Also check the deals for one-way flights from San Diego to London in April.

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