Cheapest return flights from San Diego to London in April from $655

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

Return flights

01 Apr - 08 Apr Air Canada
02 Apr - 12 Apr Frontier Airlines
04 Apr - 12 Apr Frontier Airlines
07 Apr - 21 Apr Air Canada
21 Apr - 28 Apr United
06 Apr - 29 Apr Delta
22 Apr - 02 May Air Canada
13 Apr - 19 Apr Air Canada
21 Apr - 28 Apr Iberia direct
09 Apr - 29 Apr Virgin Atlantic
24 Apr - 02 May Delta
01 Apr - 12 Apr Air Canada
22 Apr - 02 May British Airways direct
09 Apr - 01 May United
24 Apr - 02 May American Airlines direct

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

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