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Cheap flights from London to Sonoma from £363

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 15/6. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SFO
8 Feb — 15 Feb1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to Sonoma are usually found in February or September, booked 51 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

Cheap flight deals from London to Sonoma

Keep the following information in mind while searching for London to Sonoma flight deals. Data was last updated 9 January 2026.

Round-trip from

£403

One-way from

£363

Popular in

July

Cheapest in

February

Average price

£495
United Airlines
  • United Airlines
  • 6/4-27/4
  • 2 total stops
  • 32h 50m total
  • London to Sonoma
Search Deals
SWISS
  • SWISS
  • 15/6
  • 1 total stop
  • 30h 10m total
  • London to Sonoma
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£55 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find flight deals from London to Sonoma

Enter your travel dates to find the best prices.

Cheapest flights from London to Sonoma
Explore the most affordable flight options available from London to Sonoma. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 January 2026.

Mon 6/406:30LHR - SFO
1 stop14h 10mUnited Airlines
Mon 27/405:00SFO - LHR
1 stop18h 40mUnited Airlines
Deal found 8/1£403
Wed 1/414:45LHR - SFO
1 stop16h 59mFinnair
Wed 15/410:50SFO - LHR
1 stop12h 50mFinnair
Deal found 8/1£404
Fri 6/211:35LHR - SFO
2 stops16h 32mUnited Airlines
Fri 13/216:15SFO - LHR
1 stop13h 15mUnited Airlines
Deal found 8/1£405
Sun 8/317:40LCY - SFO
1 stop30h 50mSWISS
Sun 15/320:25SFO - LCY
1 stop15h 15mSWISS
Deal found 8/1£405
Thu 14/520:55LHR - SFO
1 stop22h 50mVirgin Atlantic
Fri 29/517:55SFO - LHR
Nonstop10h 20mVirgin Atlantic
Deal found 8/1£405
Sat 24/1013:10LHR - SFO
1 stop16h 16mFinnair
Fri 6/1117:30SFO - LHR
Nonstop10h 30mFinnair
Deal found 8/1£406
Wed 6/510:35LHR - SFO
Nonstop11h 05mMultiple Airlines
Wed 27/513:00SFO - LHR
Nonstop10h 25mMultiple Airlines
Deal found 8/1£407
Sat 18/409:30LHR - SFO
2 stops20h 00mAir Canada
Sat 25/413:20SFO - LHR
1 stop16h 00mAir Canada
Deal found 8/1£408
Sun 1/220:30STN - SFO
2 stops24h 10mMultiple Airlines
Fri 6/214:40SFO - STN
2 stops22h 05mMultiple Airlines
Deal found 7/1£408
Mon 16/214:30LHR - SFO
1 stop29h 50mAir Canada
Sun 22/208:25SFO - LHR
2 stops28h 10mAir Canada
Deal found 7/1£408
Mon 22/616:10LHR - SFO
1 stop14h 26mFinnair
Sun 12/707:00SFO - LHR
1 stop16h 20mFinnair
Deal found 7/1£409
Fri 24/409:25LGW - SFO
1 stop14h 50mSWISS
Fri 8/514:00SFO - LGW
1 stop19h 50mSWISS
Deal found 8/1£409

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Sonoma 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 9 January 2026.
Use the filters below to find and compare flights from London to Sonoma that are best for you.

Fly from

London

Fly to

Sonoma

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 6/2

11:35-20:07

2 stops16h 32m

San Francisco

Fri 13/2

16:15-13:30

1 stop13h 15m

£405

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 19/1

19:30-16:30

2 stops53h 00m

San Francisco

Mon 26/1

11:45-16:20

2 stops20h 35m

£410

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 26/1

07:00-16:30

2 stops17h 30m

San Francisco

Mon 2/2

19:25-21:25

2 stops18h 00m

£410

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Fri 30/1

17:40-16:30

1 stop30h 50m

San Francisco

Fri 6/2

19:25-12:45

1 stop33h 20m

£411

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Tue 31/3

05:40-17:55

1 stop20h 15m

San Francisco

Sun 19/4

19:40-23:15

1 stop19h 35m

£414

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 18/4

10:35-13:40

Nonstop11h 05m

San Francisco

Sat 25/4

16:35-11:10

Nonstop10h 35m

£414

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Mon 9/2

18:40-16:30

1 stop29h 50m

San Francisco

Mon 16/2

19:25-17:50

1 stop14h 25m

£415

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 30/1

17:25-16:30

2 stops31h 05m

San Francisco

Fri 6/2

19:25-08:15

2 stops28h 50m

£421

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 23/1

13:25-22:58

2 stops17h 33m

San Francisco

Fri 30/1

07:30-11:20

2 stops19h 50m

£422

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 2/4

10:45-13:50

Nonstop11h 05m

San Francisco

Sun 19/4

10:50-07:40

1 stop12h 50m

£425

Flights are sorted by cheapest return flights first.

Deals found on 7/1

Showing 1-10 of 60 results
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Best time to book a flight from London to Sonoma

Have a flexible travel schedule? Discover the best time to fly to Sonoma from London 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 to Sonoma

How far ahead should I book a flight from London to Sonoma?

Use this chart to determine the optimal time to book a return flight from London to Sonoma. Price data was last updated on 2 January 2026.

The price you pay for your flight from London to Sonoma may vary depending on when you book. For the best chance of a lower fare, look to book 51 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from London to Sonoma?

Currently, February is the cheapest month in which you can book a flight from London to Sonoma (average of £353). Flying from London to Sonoma in July is currently the most expensive (average of £444). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LON to SN9?

Find hourly flight availability from London to Sonoma. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 9 January 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to Sonoma as you normally would.

Weekly flight availability from London to Sonoma

Explore weekly flight availability from London to Sonoma. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 9 January 2026.

The most flights from LON to SN9 are scheduled on a Monday (31 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (26 on average).

How much does it cost for a return flight from London to Sonoma?

Reviews of airlines servicing Sonoma

Get insights into the airlines that provide service to Sonoma. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sonoma. Reviews last updated 9 January 2026.
See what other customers who have flown with KLM, Virgin Atlantic, andUnited Airlines from London to Sonoma have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,434 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Food

7.2

Comfort

7.6

Crew

8.4

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,434 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Food

7.2

Comfort

7.6

Crew

8.4

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Virgin Atlantic
7.5
Good
678 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Food

7.2

Comfort

7.6

Crew

8.4

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
United Airlines
7.4
Good
9,143 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Food

7.2

Comfort

7.6

Crew

8.4

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Lufthansa
6.8
Okay
7,698 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Food

7.2

Comfort

7.6

Crew

8.4

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
British Airways
6.7
Okay
7,659 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Food

7.2

Comfort

7.6

Crew

8.4

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

Related info for your journey

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

  • How long is the flight from London to Sonoma?

    For as low as £405, United Airlines can have you in Sonoma from London in 16h 32m. Airlines will cover a distance of 5350 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from London to Sonoma one-way?

    To fly one-way, consider booking your trip with Scandinavian Airlines, which is currently one of the cheapest options available, starting at £249. TAP AIR PORTUGAL flights start at £270 while deals on WestJet start at £300 one-way.

  • What are the most popular routes from London to Sonoma?

    The most popular route from London to Sonoma is London Heathrow - San Francisco. You may also consider London Gatwick - San Francisco or London City - San Francisco.

  • What are the most reliable airlines from London to Sonoma?

    Consider Air Canada (88%), Austrian Airlines (88%) or United Airlines (88%) when booking your flight. These represent the most reliable airlines when flying from London to Sonoma.

  • What are the cheapest flights from London to Sonoma?

    The cheapest flight price from London to Sonoma is £381. On average you can expect to pay £2,008. The most popular route, (London Heathrow - San Francisco), can usually be booked for £307.

  • Can I find deals for flights from London to Sonoma that include hotel bookings?

    Yes. In addition to deals on London to Sonoma flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Sonoma?

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

  • Can I find deals for business class flights from London to Sonoma?

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

  • What is the cheapest month to book a flight from London to Sonoma?

    Currently, February is the cheapest month in which you can book a flight from London to Sonoma (average of £353). Flying from London to Sonoma in July is currently the most expensive (average of £444). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 10 airlines flying from London to Sonoma

Discover the top 10 airlines that operate flights from London to Sonoma. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 9 January 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£237Average£565FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapest£335Average£479FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£351Average£551FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest£352Average£556FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Scandinavian AirlinesCheapest£354Average£542FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
SWISSCheapest£357Average£439FlexibilityNo cancel feeOn-time79%
Search SWISS flights
TAP AIR PORTUGALCheapest£358Average£458FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
FinnairCheapest£373Average£509FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£375Average£563FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£375Average£621FlexibilityNo cancel feeOn-time70%
Search British Airways 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 London to Sonoma?

Deals for London to Sonoma flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from London to Sonoma?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from London to Sonoma for you. Better yet — we are completely free to use.

Can Cheapflights find flights from London to Sonoma with no change fees?

Need flexible booking options for your flight to Sonoma from London? 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 London to Sonoma become cheaper?

Yes! Start tracking prices for London to Sonoma 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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