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Route comparison · Verified July 2026
London Heathrow to San Francisco: which airline is best?
San Francisco pairs two alliance anchors with the UK’s style carrier: British Airways and Virgin Atlantic from the home side, and United flying into its own SFO fortress hub. Around five departures a day serve a market split between tech business traffic and leisure — and with United’s hub at the far end, onward connections across the western US and Pacific are part of the equation.
Virgin Atlantic Airways, British Airways and United Airlines fly non-stop from London Heathrow (LHR) to San Francisco International (SFO) — around 11 hours outbound, 10 hours back, roughly 5,365 miles. FlightLogic's pick is Virgin Atlantic Airways (8.0/10), the highest-rated carrier on the route. Operators verified July 2026.
- Distance
- 5,365 miles
- Flight time
- Around 11 hours outbound, 10 hours back
- Frequency
- Roughly 35 non-stop flights a week across the three carriers.
- Non-stop carriers
- 3 rated airlines
FlightLogic scores — London to San Francisco non-stop
Editorial scores out of 10 from our airline reviews, best first. The tick marks the best score in each column. Tap an airline for its full review.
| Airline | Overall | Customer Service | Seat Comfort | Food & Beverage | In-Flight Entertainment | On-Time Performance | Value for Money |
|---|---|---|---|---|---|---|---|
| Virgin Atlantic Airways VS · 4-star · global #12 | 8.0 | 8.6 | 8.3 | 7.8 | 8.0 | 7.4 | 7.6 |
| British Airways BA · 4-star · global #9 | 7.7 | 7.8 | 8.4 | 7.5 | 7.8 | 7.5 | 7.0 |
| United Airlines UA · 4-star · global #17 | 7.7 | 7.8 | 8.1 | 7.2 | 7.8 | 7.9 | 7.6 |
FlightLogic pick: Virgin Atlantic Airways
Virgin Atlantic leads the three carriers at 8.0 overall, with the route’s best service score (8.6) and a premium economy cabin that justifies its price on an 11-hour sector. United (7.7) is the dark horse: its Polaris business is competitive, the SFO hub location makes for the smoothest onward connections, and its punctuality score (7.9) tops the route. BA (7.7) remains the Avios default with the broadest schedule. On a route this close, loyalty and timing reasonably decide it — but Virgin’s onboard product is the one we’d book blind.
Read our full Virgin Atlantic Airways review, or compare it head-to-head with any other rated airline.
Cheapest time to fly London to San Francisco
A qualitative guide to when fares on this route are usually lower or higher, based on typical travel seasons — not live prices. Actual fares always depend on your dates, demand and how far ahead you book.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
- Lower
- Typical
- Peak
Usually cheapest: January and February usually bring the lowest fares to San Francisco, when both leisure and tech-conference traffic are at their quietest. Early autumn, after the summer holidays, is a second, milder value window.
Usually priciest: Summer is the peak: UK school holidays and California’s own tourist season combine to lift fares from late June through August, with a second spike over Christmas and New Year. Major tech conferences can briefly price up specific weeks at any time of year.
When to book: On this mixed business-and-leisure route, flying midweek and booking two to four months ahead is usually worth more than waiting for a sale.
Check the fare calendar for live London–San Francisco prices *
Aircraft on the route
British Airways operates Boeing 777s and 787s; Virgin Atlantic flies Boeing 787s and A350s; United uses Boeing 777s and 787s into its SFO hub.
London to San Francisco FAQ
Which airlines fly non-stop from London Heathrow to San Francisco?
British Airways, Virgin Atlantic and United — roughly 35 flights a week across the three, all rated by FlightLogic. United’s presence doubles as a hub service, with connections onward across the western United States and the Pacific.
How long is the flight from Heathrow to San Francisco?
About 11 hours heading west and roughly 10 hours on the overnight return. The great-circle distance is around 5,365 miles — marginally shorter than the Los Angeles run.
San Francisco or Los Angeles — which California non-stop is better from Heathrow?
They’re closely matched on flight time, so decide on ground logic. SFO suits Northern California, wine country and tech trips, and United’s hub makes onward western US connections easy. LAX has more daily frequencies and better serves Southern California. If you’re touring both, open-jaw tickets into one and out of the other price sensibly on all three alliances.