AirHint found the following cheapest return flights from San Francisco (SFO) to London (LHR) in July 2026 (see full year).

Return flights

28 Jul - 14 Aug	Aer Lingus
28 Jul - 14 Aug	Delta	direct
16 Jul - 12 Aug	Aer Lingus
16 Jul - 12 Aug	Air France	direct
08 Jul - 15 Jul	TAP
27 Jul - 04 Aug	TAP
15 Jul - 28 Jul	TAP
08 Jul - 30 Jul	TAP
27 Jul - 04 Aug	Air France	direct
21 Jul - 04 Aug	Air France	direct
13 Jul - 26 Jul	TAP
09 Jul - 28 Jul	TAP
13 Jul - 19 Jul	TAP
18 Jul - 23 Jul	TAP
23 Jul - 04 Aug	TAP
13 Jul - 27 Jul	TAP
11 Jul - 19 Jul	TAP
05 Jul - 21 Jul	Delta	direct
07 Jul - 07 Aug	Air France	direct
23 Jul - 04 Aug	Air France	direct

Also check the deals for one-way flights from San Francisco to London in July.

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 San Francisco to London in July from $671

Return flights