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

Return flights

15 Jul - 22 Jul	Finnair	direct
28 Jul - 11 Aug	Air Canada
15 Jul - 30 Jul	British Airways	direct
15 Jul - 05 Aug	British Airways	direct
20 Jul - 10 Aug	British Airways	direct
25 Jul - 10 Aug	British Airways
25 Jul - 10 Aug	British Airways	direct
16 Jul - 16 Aug	British Airways	direct
02 Jul - 25 Jul	British Airways	direct
10 Jul - 18 Jul	British Airways	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.

Book a cheap hotel in London

Cheap car rent in London

Cheapest return flights from San Francisco to London in July from $658

Return flights