Cheapest return flights from San Diego to London in April from $666

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

Return flights

14 Apr - 26 Apr Frontier Airlines
29 Apr - 17 May Frontier Airlines
07 Apr - 14 Apr Lufthansa
30 Apr - 05 May Alaska Airlines
09 Apr - 29 Apr Lufthansa
22 Apr - 29 Apr jetBlue
01 Apr - 13 Apr Alaska Airlines
01 Apr - 12 Apr Alaska Airlines
09 Apr - 24 Apr Frontier Airlines
09 Apr - 01 May Alaska Airlines

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

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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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