International route
Cheap flights from London to San Francisco
London Heathrow Airport (LHR) to San Francisco International Airport (SFO). 5,354 miles, 11h 5m nonstop.
LHR to SFO at a glance
Computed from airline schedules and the fares we track for this route. Refreshed several times a day.
- Distance
- 5,354 milesgreat-circle
- Typical flight time
- 11h 5mnonstop, gate to gate
- Nonstop airlines
- DLUAASBA5 airlinesDelta, United, Alaska
- Nonstop flights per day
- 9all airlines combined
- Cheapest month
- January 2027over the next six months
- Best day to fly
- Tuesday19% less than Friday
- Time difference
- 8h behindSan Francisco vs London
London to San Francisco
Round trips from $452
Per traveler, taxes and fees included. Lowest fare we found departs Tue, Jan 12.
Cheapest month: January 2027
See fares on these datesLock any fare free — pay only when you accept your last-minute deal
Or ask an agent on WhatsAppLondon to San Francisco fares by month
Lowest round-trip economy fare per traveler in each of the next six months, taxes and fees included. Select a month to search that date.
Airlines flying London to San Francisco
5 airlines fly nonstop with 9 departures a day combined, plus 19 more with one stop.
- ASAlaska AirlinesoneworldNonstop · 2 flights a day · first checked bag from $35
- BABritish AirwaysoneworldNonstop · 2 flights a day · first checked bag from $75
- UAUnited AirlinesStar AllianceNonstop · 2 flights a day · first checked bag from $40
- VSVirgin AtlanticSkyTeamNonstop · 2 flights a day · first checked bag from $75
- DLDelta Air LinesSkyTeamNonstop · 1 flight a day · first checked bag from $35
- EIAer LingusConnecting via DUB, SNN · first checked bag from $70
- AMAeroméxicoSkyTeamConnecting via MEX, GDL · first checked bag from $40
- ACAir CanadaStar AllianceConnecting via YVR, YUL, YYC · first checked bag from $35
- AFAir FranceSkyTeamConnecting via CDG, ORY · first checked bag from $75
- AAAmerican AirlinesoneworldConnecting via DFW, CLT, ORD, MIA, PHX, PHL, DCA, JFK · first checked bag from $40
- AVAviancaStar AllianceConnecting via SAL · first checked bag from $45
- AYFinnaironeworldConnecting via HEL · first checked bag from $70
- AZITA AirwaysConnecting via FCO, MXP · first checked bag from $70
- B6JetBlueConnecting via JFK, BOS, MCO, LAX, SJU · first checked bag from $40
- KLKLM Royal Dutch AirlinesSkyTeamConnecting via AMS · first checked bag from $75
- LHLufthansaStar AllianceConnecting via FRA, MUC · first checked bag from $75
- NONorse Atlantic AirwaysLow-costConnecting via OSL · first checked bag from $80
- SKSAS Scandinavian AirlinesSkyTeamConnecting via CPH, ARN, OSL · first checked bag from $70
- LXSWISSStar AllianceConnecting via GVA · first checked bag from $75
- TPTAP Air PortugalStar AllianceConnecting via LIS · first checked bag from $70
- TKTurkish AirlinesStar AllianceConnecting via IST · first checked bag from $70
- VBVivaLow-costConnecting via MTY, MEX, GDL, CUN · first checked bag from $45
- Y4VolarisLow-costConnecting via GDL, MEX, TIJ, CUN · first checked bag from $45
- WSWestJetConnecting via YYZ · first checked bag from $35
Connecting options
Hubs where one airline can carry you on both legs, most choices first.
- Mexico City (MEX)AMVBY43 airlines
- Guadalajara (GDL)AMVBY43 airlines
- New York (JFK)AAB62 airlines
- Cancun (CUN)VBY42 airlines
- Oslo (OSL)SKNO2 airlines
Which airport should I use?
London has 3 airports and San Francisco has 3 airports. Fares can differ by $50 to $150 round trip between them, so check the alternatives before you book.
Other departure airports near London
Tips for this route
- Delta, United, Alaska and British all fly LHR to SFO nonstop, so compare the total with bags before picking the lowest base fare: the difference between a basic and a standard economy ticket is often less than one checked bag each way.
- January 2027 is the cheapest month to fly over the next six months, with round trips from $452; September 2026 is the most expensive at $570 and up, a difference of $118 per traveler.
- Departing on a Tuesday averages 19% less than a Friday on this route. If your dates are flexible, shift the outbound by a day or two and check the calendar view before you book.
- Book 2 to 5 months ahead for the best fares; long-haul seats sell out earliest for summer and holiday travel.
- San Francisco is 8 hours behind London. A morning departure lands in San Francisco with most of the day left; an evening flight arrives close to local dinner time.
Destination guide
San Francisco: Fog, hills and the Golden Gate
San Francisco packs cable cars, the Golden Gate Bridge, Alcatraz and world-class food into 49 square miles. SFO is the main gateway; Oakland and San Jose are handy alternatives with lower fares on many routes.
Best time to visit: September and October are the warmest, clearest months. Spring (April–May) is green and mild. Summer fog ('Karl') keeps the coast cool; winter is rainy but inexpensive.
Flying the other way? San Francisco to LondonFares, airlines and tips for SFO to LHR.Ready to compare live fares?
See every airline on LHR–SFO side by side with bags and seat rules spelled out.
Search London to San FranciscoLondon to San Francisco: common questions
How long is the flight from London to San Francisco?
A nonstop flight from London (LHR) to San Francisco (SFO) takes about 11h 5m gate to gate, covering 5,354 miles. Connecting itineraries add the layover, typically 2 to 5 hours more in total.
Which airlines fly nonstop from LHR to SFO?
Delta Air Lines, United Airlines, Alaska Airlines, British Airways and Virgin Atlantic operate nonstop flights from London (LHR) to San Francisco (SFO), with 9 nonstop departures a day between them. One-stop options connect through MEX, GDL and JFK.
What is the cheapest month to fly from London to San Francisco?
Over the next six months, January 2027 has the lowest round-trip fares from London (LHR) to San Francisco (SFO), starting at $452 per traveler including taxes and fees. Within any month, Tuesday departures average the lowest prices.
How far in advance should I book London to San Francisco flights?
Book 2 to 5 months ahead for the best fares; long-haul seats sell out earliest for summer and holiday travel. Air1 Tickets includes free cancellation within 24 hours of booking on every fare, so you can lock in a good price and keep looking.
What is the time difference between London and San Francisco?
San Francisco is 8 hours behind London. LHR is on Europe/London time and SFO on America/Los Angeles time. Departure and arrival times in search results are always shown in local time at each airport.
Related routes
Other popular city pairs from the same departure city and to the same destination, with the lowest round-trip fares we found.
More flights from London
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