£315 Cheap flights to San Francisco
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to San Francisco departing on 5/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Fly from
Route
Depart
Return
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Mon 11/1
11:45-14:55
Nonstop11h 10m
San Francisco
Mon 18/1
17:25-11:50
Nonstop10h 25m
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Mon 11/1
11:45-14:55
Nonstop11h 10m
San Francisco
Mon 18/1
20:35-15:10
Nonstop10h 35m
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Tue 26/1
09:00-16:30
1 stop15h 30m
San Francisco
Fri 5/2
12:50-07:25
Nonstop10h 35m
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Fri 6/11
14:45-20:47
1 stop14h 02m
San Francisco
Thu 12/11
15:08-12:20
1 stop13h 12m
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Sun 1/11
14:45-22:45
1 stop16h 00m
San Francisco
Sat 14/11
15:08-12:20
1 stop13h 12m
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Sat 31/10
11:50-15:50
Nonstop11h 00m
San Francisco
Mon 16/11
16:40-10:55
Nonstop10h 15m
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Sun 1/11
11:50-14:50
Nonstop11h 00m
San Francisco
Sat 14/11
16:40-10:55
Nonstop10h 15m
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Fri 11/12
13:50-22:31
1 stop16h 41m
San Francisco
Mon 14/12
08:55-08:15
1 stop15h 20m
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Thu 5/11
06:30-11:45
1 stop13h 15m
San Francisco
Fri 13/11
16:40-10:55
Nonstop10h 15m
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Tue 24/11
12:35-20:00
1 stop15h 25m
San Francisco
Wed 9/12
08:55-06:50
1 stop13h 55m
See travel insights to San Francisco from
San Francisco flights insights and trends
Explore insights for your San Francisco flight to craft the best travel plan
What is the cheapest month to fly to San Francisco?
The month of February is, on average, the cheapest month to fly to San Francisco from United Kingdom, with most prices found around £436. If you are unable to visit San Francisco during the month of February, then departing from United Kingdom during the month November is also very affordable. Most momondo users find prices during this month for around £499.
What is the absolute cheapest flight to San Francisco?
£53 is the cheapest deal found on momondo in the last two weeks for a flight to San Francisco. This flight is from San Diego and is 69% cheaper than most flights to San Francisco. To find the cheapest price to San Francisco from your area, use momondo’s Airport-to-Airport Pricing Tool.
See prices from:
What is the cheapest day to depart on your flight to San Francisco?
The cheapest day to depart on your flight to San Francisco is on a Wednesday when prices can be found for as low as £588. This is often the case because there is less demand to fly during this day of the week. Flights from United Kingdom to San Francisco on a Sunday will generally be more expensive and average around £673. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to San Francisco?
Our most recent data shows that the best time of day to fly to San Francisco is in the morning. Flights from United Kingdom to San Francisco during this time can be as low as £613. Try not to purchase tickets in the afternoon because they tend to be around £645. Of course, these prices can vary depending on the time of year and what airport you fly to.
Cheapest flights to San Francisco
Find the cheapest flights to San Francisco from your nearest city or airport
| CHEAPEST MONTH TO FLY TO SAN FRANCISCO FROM LONDON HEATHROW AIRPORT | February | 16% cheaper | Flying from London Heathrow Airport to San Francisco costs on average just £475 in February |
| MOST EXPENSIVE MONTH TO FLY TO SAN FRANCISCO FROM LONDON HEATHROW AIRPORT | December | 16% more expensive | It costs about £651 for flights to San Francisco from London Heathrow Airport in December |
| MOST POPULAR MONTH TO FLY TO SAN FRANCISCO FROM LONDON HEATHROW AIRPORT | July | 432% more users visited | More momondo users searched in flights to San Francisco from London Heathrow Airport in July than any other month |
Cheap San Francisco flight deals and tips
Summary info about San Francisco flight prices, duration and airlines
Best One-Way Price | £315 |
|---|---|
Best Round-Trip Price | £402 |
Fastest flight time | 17h 00m |
Popular in | August |
Frequently asked questions about flying to San Francisco
When is it best to fly to San Francisco to go sightseeing?
Sights like Fisherman's Wharf and Lombard Street are most enjoyable in months with moderate weather conditions like January, February, or December. Plan your flight to San Francisco for those months.
How far in advance should I book a flight to San Francisco?
In general, most travellers find the cheapest time to book a flight to San Francisco is about 74 days prior to their departure date, when tickets on average are £553. Keep in mind that you might also find cheap flights to San Francisco outside of this time window. In fact, momondo users recently found flights from United Kingdom to San Francisco for £475.
Is there an alternative airport near San Francisco?
Those flying to San Francisco could potentially find better pricing at Oakland Airport (11 mi from San Francisco city centre), Concord Buchanan Fld Airport (24 mi from San Francisco city centre), Napa County Airport (31 mi from San Francisco city centre), San Jose Airport (39 mi from San Francisco city centre) or Santa Rosa Sonoma County Airport (55 mi from San Francisco city centre) depending on the month and departure airport.
Is there a cheaper alternative to flying into San Francisco?
You can find deals at Santa Rosa Sonoma County Airport for £101 on average, but that price can change based on your departure airport. To save money, try momondo’s Airport-to-Airport Pricing Tool.
When did momondo last update prices for flights to San Francisco Airport?
Prices for flights to San Francisco Airport are refreshed on a daily basis.
How many operators does momondo search for flights to San Francisco Airport?
As of October 2026, there are 25 operators available to choose from for flights to San Francisco Airport.
How old do you have to be to fly to San Francisco Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The travel and health documents required for your trip to San Francisco Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Francisco Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Travelling to a place near San Francisco?
Book flights to San Francisco if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal to San Francisco?
Finding the right flight to San Francisco is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. These options can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Francisco quick and easy, saving you time and money.
Can I find flights to San Francisco with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to San Francisco with this policy.
How can momondo help me find flights to San Francisco?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as filter your options to help you make an informed choice when booking flights to San Francisco.
I’m not ready to book a flight to San Francisco right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of San Francisco flights. All you need is a valid email address and we will do the rest; it is that quick and easy.