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Cheap flights from London to Sonoma from £374

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 19/10. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SFO
7 Jul — 14 Jul1
1 adult

Cheapflights Tip: The best prices from London to Sonoma are usually found in February or November, booked 86 days in advance, depart on a Tuesday or Thursday 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 2 July 2025.

Round-trip from

£389

One-way from

£374

Popular in

July

Cheapest in

February

Average price

£654
SWISS
  • SWISS
  • 24/8-9/9
  • 2 total stops
  • 32h 30m total
  • London to Sonoma
Search Deals
19/10
  • 19/10
  • 1 total stop
  • 18h 12m total
  • London to Sonoma
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£79 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from London to Sonoma

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 2 July 2025.

Sun 24/806:00LHR - SFO
1 stop18h 10mSWISS
Tue 9/919:30SFO - LHR
1 stop14h 20mSWISS
Deal found 30/6£389
Tue 16/916:25LGW - SFO
1 stop30h 10mTAP AIR PORTUGAL
Tue 30/916:20SFO - LGW
1 stop15h 15mTAP AIR PORTUGAL
Deal found 1/7£389
Sat 1/1108:40LCY - SFO
1 stop15h 45mSWISS
Sat 8/1119:25SFO - LCY
1 stop15h 10mSWISS
Deal found 2/7£389
Wed 3/907:25LHR - SFO
1 stop19h 35mLufthansa
Tue 23/920:52SFO - LHR
2 stops25h 03mLufthansa
Deal found 30/6£390
Wed 17/918:35LGW - SFO
1 stop29h 35mSWISS
Sun 21/919:30SFO - LGW
1 stop14h 20mSWISS
Deal found 30/6£390
Sat 30/810:45LGW - SFO
1 stop31h 55mMultiple Airlines
Wed 24/911:12SFO - LGW
1 stop15h 43mMultiple Airlines
Deal found 30/6£391
Wed 8/1008:40LHR - SFO
1 stop15h 55mUnited Airlines
Wed 5/1112:50SFO - LHR
Nonstop10h 35mUnited Airlines
Deal found 30/6£391
Wed 17/908:40LHR - SFO
1 stop15h 30mMultiple Airlines
Sun 21/913:05SFO - LHR
Nonstop10h 20mMultiple Airlines
Deal found 2/7£392
Sun 24/810:45LHR - SFO
Nonstop11h 05mBritish Airways
Tue 9/919:20SFO - LHR
Nonstop10h 25mBritish Airways
Deal found 30/6£402
Mon 15/916:15LHR - SFO
Nonstop11h 00mBrussels Airlines
Fri 26/919:50SFO - LHR
Nonstop10h 20mBrussels Airlines
Deal found 30/6£407
Mon 25/812:20LGW - SFO
2 stops34h 07mAmerican Airlines
Mon 8/919:45SFO - LGW
2 stops52h 25mAmerican Airlines
Deal found 1/7£409
Sun 24/810:35LHR - SFO
Nonstop11h 00mAustrian Airlines
Tue 9/907:05SFO - LHR
1 stop15h 40mAustrian Airlines
Deal found 29/6£420

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 2 July 2025.
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

Sun 24/8

06:00-16:10

1 stop18h 10m

San Francisco

Tue 9/9

19:30-17:50

1 stop14h 20m

£389

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Tue 16/9

16:25-14:35

1 stop30h 10m

San Francisco

Tue 30/9

16:20-15:35

1 stop15h 15m

£389

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Sat 1/11

08:40-17:25

1 stop15h 45m

San Francisco

Sat 8/11

19:25-18:35

1 stop15h 10m

£389

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 3/9

07:25-19:00

1 stop19h 35m

San Francisco

Tue 23/9

20:52-05:55

2 stops25h 03m

£390

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Wed 17/9

18:35-16:10

1 stop29h 35m

San Francisco

Sun 21/9

19:30-17:50

1 stop14h 20m

£390

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Sat 30/8

10:45-10:40

1 stop31h 55m

San Francisco

Wed 24/9

11:12-10:55

1 stop15h 43m

£391

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 8/10

08:40-16:35

1 stop15h 55m

San Francisco

Wed 5/11

12:50-07:25

Nonstop10h 35m

£391

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 17/9

08:40-16:10

1 stop15h 30m

San Francisco

Sun 21/9

13:05-07:25

Nonstop10h 20m

£392

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 24/8

10:45-13:50

Nonstop11h 05m

San Francisco

Tue 9/9

19:20-13:45

Nonstop10h 25m

£402

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 15/9

16:15-19:15

Nonstop11h 00m

San Francisco

Fri 26/9

19:50-14:10

Nonstop10h 20m

£407

Flights are sorted by cheapest return flights first.

Deals found on 29/6

Showing 1-10 of 42 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 27 June 2025.

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 86 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 £538). Flying from London to Sonoma in July is currently the most expensive (average of £803). 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 2 July 2025.

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.

What is the cheapest day to fly from London to Sonoma?

Use this chart to determine the cheapest time to fly return from London to Sonoma. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their London to Sonoma flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

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 2 July 2025.

The most flights from LON to SN9 are scheduled on a Monday (42 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (36 on average).

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 2 July 2025.
See what other customers who have flown with Delta, KLM, andAustrian 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.
Delta
8.0
Very Good
7,975 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very Good
7,975 reviews
Delta
8.0
Very Good
7,975 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,366 reviews
Delta
8.0
Very Good
7,975 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Austrian Airlines
7.6
Good
809 reviews
Delta
8.0
Very Good
7,975 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
SWISS
7.5
Good
1,654 reviews
Delta
8.0
Very Good
7,975 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,858 reviews
Delta
8.0
Very Good
7,975 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

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

    To fly one-way, consider booking your trip with Aer Lingus, which is currently one of the cheapest options available, starting at £375. Scandinavian Airlines flights start at £378 while deals on WestJet start at £383 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 New Zealand (87%), Air Canada (87%) or Austrian Airlines (87%) 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 £368. On average you can expect to pay £1,904. The most popular route, (London Heathrow - San Francisco), can usually be booked for £338.

  • 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 £538). Flying from London to Sonoma in July is currently the most expensive (average of £803). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for London to Sonoma

See prices for flight routes from nearby airports that may be better suited for you.
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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 2 July 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£232Average£475FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
TAP AIR PORTUGALCheapest£339Average£462FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
SWISSCheapest£343Average£406FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Scandinavian AirlinesCheapest£343Average£567FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
United AirlinesCheapest£350Average£592FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£352Average£533FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£356Average£617FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Brussels AirlinesCheapest£357Average£474FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
KLMCheapest£360Average£507FlexibilityNo cancel feeOn-time75%
Search KLM flights
FinnairCheapest£362Average£476FlexibilityNo cancel feeOn-time76%
Search Finnair 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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