Flights to San Francisco

£295 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 19/5. 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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Find the cheapest flights from the United Kingdom to San Francisco

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
11:05 - 21:20
LHR
-
SFO
18h 15m
1 stop
United Airlines Logo
23:59 - 21:35
SFO
-
LHR
13h 36m
1 stop
£457United Airlines
Fri, 15 May - Sun, 31 May
United Airlines Logo
13:00 - 16:10
LHR
-
SFO
11h 10mdirect
United Airlines Logo
23:59 - 21:25
SFO
-
LHR
13h 26m
1 stop
£459United Airlines
Fri, 15 May - Fri, 29 May
Delta Logo
17:45 - 00:06
LHR
-
SFO
14h 21m
1 stop
Delta Logo
06:00 - 06:25
SFO
-
LHR
16h 25m
1 stop
£462Delta
Mon, 29 Jun - Tue, 14 Jul
British Airways Logo
10:45 - 13:50
LHR
-
SFO
11h 05mdirect
British Airways Logo
19:30 - 13:55
SFO
-
LHR
10h 25mdirect
£464British Airways
Wed, 3 Jun - Thu, 3 Sep
Virgin Atlantic Logo
06:30 - 11:45
LHR
-
SFO
13h 15m
1 stop
Virgin Atlantic Logo
18:19 - 17:35
SFO
-
LHR
15h 16m
1 stop
£465Virgin Atlantic
Thu, 18 Jun - Fri, 3 Jul
American Airlines Logo
09:15 - 19:45
LHR
-
SFO
18h 30m
1 stop
American Airlines Logo
12:24 - 11:05
SFO
-
LHR
14h 41m
1 stop
£468American Airlines
Thu, 4 Jun - Wed, 2 Sep
Virgin Atlantic Logo
06:30 - 11:45
LHR
-
SFO
13h 15m
1 stop
Virgin Atlantic Logo
12:20 - 10:40
SFO
-
LHR
14h 20m
1 stop
£473Virgin Atlantic
Mon, 7 Sep - Mon, 14 Sep
British Airways Logo
10:45 - 13:50
LHR
-
SFO
11h 05mdirect
British Airways Logo
16:35 - 11:00
SFO
-
LHR
10h 25mdirect
£474British Airways
Thu, 4 Jun - Thu, 3 Sep
Lufthansa Logo
09:15 - 15:20
LCY
-
SFO
14h 05m
1 stop
Lufthansa Logo
14:40 - 17:55
SFO
-
LCY
19h 15m
1 stop
£521Lufthansa
Tue, 29 Sep - Tue, 6 Oct
Aer Lingus Logo
08:35 - 15:50
GLA
-
SFO
15h 15m
1 stop
Aer Lingus Logo
17:40 - 16:50
SFO
-
GLA
15h 10m
1 stop
£641Aer Lingus
Thu, 21 May - Wed, 3 Jun

momondo Fare Finder

 
Locate flights to San Francisco that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 279,928 searches and data was last updated on 3 May 2026.
Use the filters below to find and compare flights to San Francisco that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 15/5

11:05-21:20

1 stop18h 15m

San Francisco

Sun 31/5

23:59-21:35

1 stop13h 36m

£457

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 15/5

13:00-16:10

Nonstop11h 10m

San Francisco

Fri 29/5

23:59-21:25

1 stop13h 26m

£459

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 29/6

17:45-00:06

1 stop14h 21m

San Francisco

Tue 14/7

06:00-06:25

1 stop16h 25m

£462
Fastest return journey

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 3/6

10:45-13:50

Nonstop11h 05m

San Francisco

Thu 3/9

19:30-13:55

Nonstop10h 25m

£464

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 18/6

06:30-11:45

1 stop13h 15m

San Francisco

Fri 3/7

18:19-17:35

1 stop15h 16m

£465

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 4/6

09:15-19:45

1 stop18h 30m

San Francisco

Wed 2/9

12:24-11:05

1 stop14h 41m

£468

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 7/9

06:30-11:45

1 stop13h 15m

San Francisco

Mon 14/9

12:20-10:40

1 stop14h 20m

£473

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 4/6

10:45-13:50

Nonstop11h 05m

San Francisco

Thu 3/9

16:35-11:00

Nonstop10h 25m

£474

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Tue 29/9

09:15-15:20

1 stop14h 05m

San Francisco

Tue 6/10

14:40-17:55

1 stop19h 15m

£521

GlasgowSan Francisco

GLA - SFO

GLASFO

Glasgow Intl

Thu 21/5

08:35-15:50

1 stop15h 15m

San Francisco

Wed 3/6

17:40-16:50

1 stop15h 10m

£641

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 £404. If you are unable to visit San Francisco during the month of February, then departing from United Kingdom during the month September is also very affordable. Most momondo users find prices during this month for around £426.

What is the absolute cheapest flight to San Francisco?

£78 is the cheapest deal found on momondo in the last two weeks for a flight to San Francisco. This flight is from Los Angeles and is 68% 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 Thursday when prices can be found for as low as £564. 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 £657. 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 £568. Try not to purchase tickets at midday because they tend to be around £786. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to San Francisco?

You are more likely to see cheaper flights to San Francisco from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around £512 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from United Kingdom for as low as £468 on momondo.

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 AIRPORTFebruary19% cheaperFlying from London Heathrow Airport to San Francisco costs on average just £418 in February
MOST EXPENSIVE MONTH TO FLY TO SAN FRANCISCO FROM LONDON HEATHROW AIRPORTDecember26% more expensiveIt costs about £647 for flights to San Francisco from London Heathrow Airport in December
MOST POPULAR MONTH TO FLY TO SAN FRANCISCO FROM LONDON HEATHROW AIRPORTJuly219% more users visitedMore 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

£295

Best Round-Trip Price

£457

Fastest flight time

15h 35m

Popular in

March
The best one-way flight price to San Francisco from United Kingdom in the last 72 hours is £295 (Newcastle upon Tyne to San Francisco).
The best round-trip flight price to San Francisco from United Kingdom in the last 72 hours is £457 (London Heathrow to San Francisco).
The fastest flight to San Francisco from United Kingdom takes 15h 35m (London Heathrow to San Francisco).
March has the highest demand for flights to San Francisco, with a 20% price increase on average.

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 51 days prior to their departure date, when tickets on average are £505. 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 £418.

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 Oakland Airport for £154 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?

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 locations
Sunnyvale
Santa Cruz
Santa Clara
Rohnert Park
Seaside
Big Sur
Newark
South San Francisco
Capitola
Campbell
Palo Alto
Sausalito
San Bruno
Woodland
Roseville
Novato
Pacific Grove
Aptos
Burlingame
Mill Valley

Why 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.

An easier way to manage your San Francisco trip

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