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Cheap flights from London Luton Airport to San Francisco from £400

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/5. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — SFO
29 May — 5 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Luton to San Francisco

Enter your travel dates to find the best prices.

Cheapest flights from Luton to San Francisco
Explore the most affordable flight options available from Luton to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 April 2026.

Wed 6/506:15
LTN
-
SFO
1 stop17h 40m
Multiple Airlines
Wed 13/517:40
SFO
-
LTN
1 stop19h 35m
Multiple Airlines
Deal found 25/4£525
Fri 1/506:20
LTN
-
SFO
1 stop17h 30m
Multiple Airlines
Thu 14/517:35
SFO
-
LTN
1 stop21h 50m
Multiple Airlines
Deal found 24/4£533
Tue 2/609:40
LTN
-
SFO
1 stop14h 15m
Multiple Airlines
Tue 9/617:40
SFO
-
LTN
1 stop13h 50m
Multiple Airlines
Deal found 27/4£534
Tue 9/609:40
LTN
-
SFO
1 stop14h 15m
Multiple Airlines
Tue 16/617:40
SFO
-
LTN
1 stop20h 30m
Multiple Airlines
Deal found 25/4£539
Mon 15/608:15
LTN
-
SFO
1 stop15h 35m
Multiple Airlines
Mon 22/617:35
SFO
-
LTN
1 stop21h 15m
Multiple Airlines
Deal found 25/4£542
Thu 7/509:25
LTN
-
SFO
1 stop14h 25m
Multiple Airlines
Mon 11/517:35
SFO
-
LTN
1 stop14h 10m
Multiple Airlines
Deal found 29/4£544
Thu 28/509:25
LTN
-
SFO
1 stop14h 25m
Multiple Airlines
Thu 4/617:35
SFO
-
LTN
1 stop15h 10m
Multiple Airlines
Deal found 28/4£545
Tue 26/509:40
LTN
-
SFO
1 stop14h 15m
Multiple Airlines
Tue 2/617:40
SFO
-
LTN
1 stop20h 30m
Multiple Airlines
Deal found 28/4£545
Fri 15/506:20
LTN
-
SFO
1 stop17h 30m
Multiple Airlines
Tue 19/517:40
SFO
-
LTN
1 stop13h 50m
Multiple Airlines
Deal found 29/4£546
Tue 19/509:40
LTN
-
SFO
1 stop14h 15m
Multiple Airlines
Tue 26/517:40
SFO
-
LTN
1 stop13h 50m
Multiple Airlines
Deal found 27/4£547
Wed 13/506:15
LTN
-
SFO
1 stop17h 40m
Multiple Airlines
Sun 17/517:40
SFO
-
LTN
1 stop13h 45m
Multiple Airlines
Deal found 25/4£547
Fri 12/606:20
LTN
-
SFO
1 stop17h 30m
Multiple Airlines
Fri 19/617:35
SFO
-
LTN
1 stop15h 50m
Multiple Airlines
Deal found 28/4£550

Find flight deals from Luton to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Luton (LTN) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 29 April 2026.

Round-trip from

£534

One-way from

£400

Popular in

December

Cheapest in

February

Average price

£497
2/6-9/6
  • 2/6-9/6
  • 2 total stops
  • 28h 05m total
  • London to San Francisco
Search Deals
7/5
  • 7/5
  • 1 total stop
  • 36h 35m total
  • London to San Francisco
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£15 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Luton to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 29 April 2026.
Use the filters below to find and compare flights from London Luton Airport to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Fri 22/5

06:20-15:50

1 stop17h 30m

San Francisco

Mon 1/6

17:35-15:45

1 stop14h 10m

£571
Fastest return journey

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Fri 5/6

06:20-15:50

1 stop17h 30m

San Francisco

Wed 10/6

17:40-15:25

1 stop13h 45m

£658

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Sun 10/5

21:50-18:44

2 stops28h 54m

San Francisco

Sat 16/5

15:15-21:05

1 stop21h 50m

£739

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Wed 13/5

06:10-20:50

1 stop22h 40m

San Francisco

Wed 27/5

06:00-20:15

2 stops30h 15m

£739

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Thu 25/6

07:05-21:55

2 stops22h 50m

San Francisco

Sun 16/8

17:40-22:55

2 stops21h 15m

£743

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Tue 15/9

12:45-14:35

2 stops33h 50m

San Francisco

Sat 26/9

08:30-13:00

2 stops20h 30m

£745

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Tue 22/9

14:45-14:35

2 stops31h 50m

San Francisco

Tue 29/9

19:35-20:30

2 stops16h 55m

£748

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Wed 24/6

06:10-20:50

1 stop22h 40m

San Francisco

Tue 7/7

06:00-18:30

3 stops28h 30m

£794

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Sun 24/5

18:15-12:40

2 stops26h 25m

San Francisco

Sun 31/5

19:35-23:20

2 stops19h 45m

£805

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Thu 16/7

21:40-12:00

3 stops46h 20m

San Francisco

Sun 16/8

17:40-22:55

2 stops21h 15m

£814

Flights are sorted by cheapest return flights first.

Deals found on 27/4

Showing 1-10 of 23 resultsSorted by cheapest first
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Best time to book a flight from Luton to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Luton with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Luton Airport to San Francisco

How often are flights from London to San Francisco delayed?

About 100% of weekly flights between London and San Francisco have experienced delays in the past year, with the average delay time being 78 minutes.

What is the most punctual flight time for London to San Francisco flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.

Related info for your journey

Find useful and relevant information for your journey from Luton to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Francisco from London Luton?

    For a flight from London Luton to San Francisco, you will be flying into San Francisco. San Francisco (SFO) is just 11.0 mi from the center of the city. San Francisco is the only San Francisco airport and it handles 0 inbound flights from London Luton per day. 0 airlines have flights to San Francisco from London Luton on a regular basis.

  • Can I find deals for flights from Luton to San Francisco that include hotel bookings?

    Yes. In addition to deals on Luton to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Luton to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Luton to San Francisco.

  • Can I find deals for business class flights from Luton to San Francisco?

    Yes. Cheapflights offers flight deals from Luton to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Newark
San Bruno
Bodega Bay
South San Francisco
Sunnyvale

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Luton to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
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London City to San Jose flights
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London City to Sacramento flights
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Heathrow to Santa Barbara flights
Stansted to San Jose flights
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London City to Burbank flights
Gatwick to Oakland flights
Heathrow to Medford flights
Heathrow to Santa Rosa flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Luton to San Francisco?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Luton to San Francisco. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Luton to San Francisco?

Millions of users choose and trust Cheapflights to book the best flight deals from Luton to San Francisco for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Luton to San Francisco with no change fees?

Need flexible booking options for your flight to San Francisco from Luton? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Luton to San Francisco become cheaper?

Yes! Start tracking prices for Luton to San Francisco flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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