Long haul · City · Tech. Compare cheap flights to San Francisco from UK airports — flight time 10h 30m from London.
San Francisco is a long-haul destination from the UK, suited to a long haul and city trip. The 10h 30m flight from London makes it a realistic two-week trip option, with regional UK airports — Manchester, Edinburgh, Birmingham — adding direct service on the busier routes. Fares sit in the premium long-haul bracket on this corridor, with one-way prices from £420 when you catch the right week.
January typically delivers the cheapest fares (around £441 return on average), with prices climbing through August when seasonal demand peaks (£1092+). On the ground, US dollar (USD) is the local currency and English the dominant language — English coverage is solid in tourist quarters and at the airport. Visa: ESTA required — apply online before travel, $21, valid 2 years. 8–14 weeks ahead is the long-haul sweet spot — earlier doesn't reliably help, later starts to hurt; last-minute bookings on this route can run two to three times the cheapest fare we see.
Direct flights from London to San Francisco take approximately 10h 30m. Total journey time depends on your departure airport and any connections.
ESTA required — apply online before travel, $21, valid 2 years
The best months to visit San Francisco are Sep–Nov, when conditions are most comfortable for sightseeing and weather is settled.
US dollar (USD) — most major hotels and restaurants in San Francisco accept card payments, but cash is useful for smaller establishments and tipping.
English. English is widely understood in tourist areas, hotels, and major restaurants.
