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Cheap flights from San Diego to London from £279

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 7/1. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — LON
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from San Diego to London are usually found in October or February, booked 51 days in advance, depart on a Monday or Saturday and return on a Tuesday

Cheap flight deals from San Diego to London

Enter your travel dates to find the best prices.

Cheapest flights from San Diego to London
Explore the most affordable flight options available from San Diego to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 December 2025.

Wed 31/1207:00SAN - LHR
1 stop14h 55mMultiple Airlines
Mon 12/120:05LHR - SAN
2 stops32h 44mMultiple Airlines
Deal found 9/12£476
Sun 28/1219:10SAN - LHR
1 stop30h 50mDelta
Tue 13/110:00LHR - SAN
2 stops19h 05mDelta
Deal found 11/12£497
Mon 29/1210:56SAN - LHR
2 stops36h 14mMultiple Airlines
Mon 12/118:40LHR - SAN
2 stops34h 09mMultiple Airlines
Deal found 9/12£509
Mon 29/1217:40SAN - LHR
1 stop29h 45mLufthansa
Mon 12/111:35LHR - SAN
1 stop13h 53mLufthansa
Deal found 9/12£512
Tue 30/1207:40SAN - LHR
1 stop15h 45mLufthansa
Mon 12/113:35LHR - SAN
1 stop16h 58mLufthansa
Deal found 10/12£512
Sun 28/1219:10SAN - LHR
1 stop30h 50mDelta
Fri 9/109:40LHR - SAN
2 stops20h 51mDelta
Deal found 11/12£521
Tue 30/1206:15SAN - LHR
2 stops21h 45mUnited Airlines
Mon 12/113:50LHR - SAN
2 stops41h 52mUnited Airlines
Deal found 10/12£526
Wed 31/1216:15SAN - LHR
2 stops17h 25mScandinavian Airlines
Mon 12/106:40LHR - SAN
2 stops25h 25mScandinavian Airlines
Deal found 9/12£532
Sun 28/1219:10SAN - LHR
1 stop30h 50mDelta
Sun 11/111:30LHR - SAN
2 stops19h 17mDelta
Deal found 11/12£538
Tue 30/1218:10SAN - LHR
2 stops29h 00mAir Canada
Sat 10/118:00LHR - SAN
1 stop25h 53mAir Canada
Deal found 9/12£545
Thu 25/1216:15SAN - LHR
2 stops17h 25mScandinavian Airlines
Fri 16/117:00LHR - SAN
2 stops36h 05mScandinavian Airlines
Deal found 10/12£547
Sun 28/1210:56SAN - LCY
2 stops61h 49mSWISS
Tue 13/117:40LCY - SAN
2 stops37h 25mSWISS
Deal found 11/12£687

Find flight deals from San Diego to London

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to London (LON). 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 12 December 2025.

Round-trip from

£475

One-way from

£279

Popular in

June

Cheapest in

October

Average price

£752

Good round-trip deal

£879 or less

Good one-way deal

£360 or less
Lufthansa
  • Lufthansa
  • 11/3-24/3
  • 3 total stops
  • 40h 28m total
  • San Diego to London
Search Deals
JetBlue
  • JetBlue
  • 7/1
  • 1 total stop
  • 16h 40m total
  • San Diego to London
Search Deals
Highest demand for flights based on searches. 26% potential increase in price (£173 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£27 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from San Diego to London (LON).
Search Deals
Price to beat on a one-way flight from San Diego to London (LON).
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Diego to London 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 12 December 2025.
Use the filters below to find and compare flights from San Diego to London that are best for you.

Fly from

San Diego

Fly to

London

Route

Depart

Return

Price

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Fri 30/1

21:00-22:00

1 stop17h 00m

London Heathrow

Sun 8/2

09:20-20:20

1 stop19h 00m

£476

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 21/1

21:00-21:40

1 stop16h 40m

London Heathrow

Thu 29/1

07:25-19:50

1 stop20h 25m

£476

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Sat 31/1

14:55-18:30

2 stops19h 35m

London Heathrow

Wed 4/2

06:40-22:47

2 stops24h 07m

£480

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Sun 22/3

06:15-08:45

1 stop19h 30m

London Heathrow

Tue 31/3

06:30-14:52

2 stops16h 22m

£499

San DiegoLondon

SAN - LGW

SANLGW

San Diego

Mon 12/1

12:49-17:50

2 stops21h 01m

London Gatwick

Tue 27/1

18:40-20:49

2 stops34h 09m

£502

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 12/1

09:45-10:15

2 stops16h 30m

London Heathrow

Tue 27/1

06:30-18:00

2 stops19h 30m

£502

San DiegoLondon

SAN - LCY

SANLCY

San Diego

Mon 23/2

11:05-17:40

2 stops22h 35m

London City

Wed 4/3

09:50-20:49

2 stops18h 59m

£510

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Sat 31/1

22:40-20:35

1 stop13h 55m

London Heathrow

Fri 13/2

10:00-18:33

1 stop16h 33m

£512

San DiegoLondon

SAN - LCY

SANLCY

San Diego

Sun 8/2

06:30-09:30

2 stops19h 00m

London City

Wed 25/2

20:05-12:05

1 stop24h 00m

£517

San DiegoLondon

SAN - LCY

SANLCY

San Diego

Mon 12/1

16:00-17:05

2 stops17h 05m

London City

Tue 27/1

09:15-20:49

2 stops19h 34m

£523

Flights are sorted by cheapest return flights first.

Deals found on 10/12

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

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

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

Use this chart to determine the optimal time to book a return flight from San Diego to London. Price data was last updated on 5 December 2025.

The price you pay for your flight from San Diego to London 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 San Diego to London?

Currently, December is the cheapest month in which you can book a flight from San Diego to London (average of £350). Flying from San Diego to London in June is currently the most expensive (average of £620). 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 SAN to LON?

Find hourly flight availability from San Diego to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 December 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 17% on flights from San Diego to London by exploring options for tickets in the morning.

Weekly flight availability from San Diego to London

Explore weekly flight availability from San Diego to London. 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 12 December 2025.

The most flights from SAN to LON are scheduled on a Monday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).

What’s the top stopover airport for flights from San Diego to London?

Share of one-stop return flights from San Diego to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Dallas (DFW) – chosen by Cheapflights users on 20% of one-stop itineraries from San Diego to London on Cheapflights.

What’s the cheapest stopover airport for flights from San Diego to London?

Average return fare for one-stop flights from San Diego to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Denver (DEN) is the most affordable one-stop option, with an average return flight price of £423.

What’s the fastest stopover option from San Diego to London?

Shortest average travel time for one-stop one-way flights from San Diego to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Denver (DEN) have the shortest average one-way travel time for one-stop routes: 12h 17m.

Which airport typically offers the quickest stopover for flights from San Diego to London?

Average stopover duration for one-stop one-way flights from San Diego to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Denver (DEN) offer the fastest connection on this route, with an average stopover time of 1h 08m.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 12 December 2025.
Get a feel of what it's like to fly with Iberia and British Airways from San Diego to London by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Iberia
7.0
Good
3,045 reviews
Check prices

Boarding

7.1

Overall

7.0

Comfort

6.7

Crew

7.7

Food

6.3

Entertainment

6.6

Reviews

1 / 20
6.0
Good

David,May 2025

JFK - MAD

Unfortunately carry on bag over head was full. I was seated 27J and had to place my carry on by seat 8 .. other then that it was a good flight
Iberia
7.0
Good
3,045 reviews
Iberia
7.0
Good
3,045 reviews
Check prices

Boarding

7.1

Overall

7.0

Comfort

6.7

Crew

7.7

Food

6.3

Entertainment

6.6

Reviews

1 / 20
6.0
Good

David,May 2025

JFK - MAD

Unfortunately carry on bag over head was full. I was seated 27J and had to place my carry on by seat 8 .. other then that it was a good flight
British Airways
6.7
Okay
7,571 reviews
Iberia
7.0
Good
3,045 reviews
Check prices

Boarding

7.1

Overall

7.0

Comfort

6.7

Crew

7.7

Food

6.3

Entertainment

6.6

Reviews

1 / 20
6.0
Good

David,May 2025

JFK - MAD

Unfortunately carry on bag over head was full. I was seated 27J and had to place my carry on by seat 8 .. other then that it was a good flight

Related info for your journey

Find useful and relevant information for your journey from San Diego to London. 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 from for flights from San Diego to London?

    San Diego (SAN), located 2.6 mi from the city center, is the airport you fly out of when you book flights from San Diego to London. 1 airline have flights from San Diego to London on a regular basis. Booking flights from San Diego to London should not be difficult; the airport handles an average of 6 outbound flights to London per day.

  • How long is the flight from San Diego to London?

    JetBlue, Scandinavian Airlines, and Delta can get you from San Diego to London in just under 17h. Your travel time can differ by up to 2h 35m. There are 5469 mi between San Diego and London. Both multi-stop and direct flights can be found to your destination and back.

  • What is the cheapest airline to fly from San Diego to London round-trip?

    According to our current data, British Airways (£510), offers the cheapest pricing from San Diego to London. British Airways is currently priced 19% below the average price you’ll pay for this route.

  • What are the most popular routes from San Diego to London?

    When deciding which route to take from San Diego to London consider San Diego - London Heathrow, San Diego - London Gatwick or San Diego - London City as they are the most popular.

  • What are the most reliable airlines from San Diego to London?

    The top 3 most reliable airlines when flying from San Diego to London are American Airlines (77%), Alaska Airlines (77%) and British Airways (77%).

  • What are the cheapest flights from San Diego to London?

    On average you can expect to pay £692 for a flight from San Diego to London. The cheapest flight overall is £313 while the most popular route, (San Diego - London Heathrow) is currently priced at £423.

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

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

  • How can I find direct flights from San Diego to London?

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

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

    Yes. Cheapflights offers flight deals from San Diego to London 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 San Diego to London?

    Currently, December is the cheapest month in which you can book a flight from San Diego to London (average of £350). Flying from San Diego to London in June is currently the most expensive (average of £620). 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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Alternative routes for San Diego to London

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Top airline flying from San Diego to London

Discover the top airline that operate flights from San Diego to London. 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 12 December 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£510Average£758FlexibilityNo 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 San Diego to London?

Cheapflights helps you search for flights from San Diego to London via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Millions of users choose and trust Cheapflights to book the best flight deals from San Diego to London 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 San Diego to London with no change fees?

Yes, we can. To see specific flights from San Diego to London with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from San Diego to London become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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