Route · LHR → SFO
Flights from London to San Francisco
London Heathrow to San Francisco is one of the flagship transatlantic routes, covering roughly 8,600 kilometres with a typical westbound block time of around ten and a half hours and a notably shorter eastbound return thanks to prevailing tailwinds. United Airlines and American Airlines carry the bulk of passengers, operating Boeing 777s and 787 Dreamliners respectively, while Iberia serves the route via a codeshare arrangement with British Airways and Lufthansa connects through its Star Alliance partnerships; Air New Zealand also places seats on the routing as part of its longer transpacific network. A practical note worth remembering: San Francisco's AirTrain is straightforward, but the nine-hour time difference means you land in the early afternoon having lost most of your day, so booking an evening departure from Heathrow helps. Fare-wise, shoulder seasons in March and October typically yield the most competitive economy pricing, while premium-cabin redemptions and discounted business fares tend to surface mid-week.
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Cheapest dates to fly
Live prices · powered by AviasalesThe calendar below pulls live fares from our search partner for London (LHR) → San Francisco (SFO). Use the year… view to spot the cheapest week to fly, the day-of-week patterns most travellers miss, and any shoulder-season dips worth shifting your trip around. Prices refresh every few hours, so what you see is what your booking page should look like a moment later — click any date to jump straight to the fare on Aviasales.
Airlines on this route
6 carriersThe 6 carriers we currently track on the London–San Francisco route, from full-service flag carriers to low-cost competitors. Tap any airline for its full profile,… baggage rules, fleet context, and a live fare search pre-filtered to that carrier — useful if you're loyal to a frequent-flyer programme, want to compare onboard product on the same dates, or are weighing a cheaper one-stop against a pricier nonstop.
Flights from London to San Francisco
Live schedule · powered by AviasalesBelow is the published weekly schedule for nonstop and one-stop services from London to San Francisco — the actual flight numbers, departure and arrival times… your booking page will pull from. Use it to plan around departure preferences (early morning vs late evening), see which carriers fly on which weekdays, or pick a connection that lets you sleep in your own bed before a long-haul leg. Click any row to load it directly in the search.
Airport guides
Quick links into the airport profiles at both ends of the route. Each guide covers terminal layout, the airlines that base hubs at LHR and… SFO, the other routes those airports serve, and the ground-transit options most travellers wish they'd read about before landing — the practical context you only really need to know once you've booked, but want to skim before you do.