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Cheap flights from San Diego to London from £169

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 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — LON
12 out — 19 out1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from San Diego to London are usually found in February or October, booked 46 days in advance, depart on a Monday or Saturday and return on a Saturday

Cheap 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 setembro 2025.

Round-trip from

£409

One-way from

£169

Popular in

June

Cheapest in

February

Average price

£542

Good one-way deal

£319 or less
KLM
  • KLM
  • 7/10-14/10
  • 2 total stops
  • 27h 10m total
  • San Diego to London
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4/10
  • 4/10
  • 2 total stops
  • 40h 39m total
  • San Diego to London
Search Deals
Highest demand for flights based on searches. 26% potential increase in price (£170 potential increase over avg. return price).
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Cheapest flight prices on average. 5% potential price decrease (£25 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Price to beat on a one-way flight from San Diego to London (LON).
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Find flight deals from San Diego to London

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 setembro 2025.

ter 7/1013:20SAN - LHR
1 stop13h 40mMultiple Airlines
ter 14/1006:30LHR - SAN
1 stop13h 30mMultiple Airlines
Deal found 10/9£409
qua 12/1116:01SAN - LHR
2 stops17h 49mMultiple Airlines
qui 20/1108:45LHR - SAN
1 stop15h 00mMultiple Airlines
Deal found 10/9£410
seg 27/1019:00SAN - LHR
Nonstop10h 35mBritish Airways
qui 6/1112:50LHR - SAN
Nonstop11h 20mBritish Airways
Deal found 11/9£410
ter 4/1118:10SAN - LHR
1 stop33h 40mAir Canada
qua 26/1114:30LHR - SAN
1 stop34h 54mAir Canada
Deal found 10/9£411
qua 24/909:59SAN - LHR
2 stops14h 56mDelta
qui 2/1006:30LHR - SAN
1 stop13h 30mDelta
Deal found 10/9£412
qua 12/1111:41SAN - LHR
1 stop12h 34mBritish Airways
qui 20/1112:50LHR - SAN
Nonstop11h 20mBritish Airways
Deal found 11/9£413
qua 22/1006:53SAN - LHR
2 stops15h 37mMultiple Airlines
qua 29/1013:25LHR - SAN
2 stops29h 38mMultiple Airlines
Deal found 10/9£413
dom 26/1022:30SAN - LHR
2 stops25h 40mAir Canada
ter 4/1114:30LHR - SAN
1 stop34h 54mAir Canada
Deal found 11/9£414
ter 4/1112:43SAN - LHR
1 stop13h 17mBritish Airways
qua 26/1112:50LHR - SAN
Nonstop11h 20mBritish Airways
Deal found 11/9£415
seg 22/920:11SAN - LHR
2 stops29h 24mUnited Airlines
qua 1/1008:30LHR - SAN
1 stop35h 01mUnited Airlines
Deal found 11/9£416
seg 6/1014:05SAN - LHR
1 stop15h 25mDelta
qua 22/1009:00LHR - SAN
2 stops18h 08mDelta
Deal found 11/9£416
qua 24/907:00SAN - LHR
1 stop20h 25mDelta
qua 22/1008:40LHR - SAN
2 stops18h 28mDelta
Deal found 11/9£417

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 setembro 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

qua 1/10

09:45-09:50

1 stop16h 05m

London Heathrow

qua 15/10

20:55-12:00

1 stop23h 05m

£409

San DiegoLondon

SAN - LHR

SANLHR

San Diego

seg 27/10

19:00-12:35

Nonstop10h 35m

London Heathrow

sex 7/11

12:50-16:10

Nonstop11h 20m

£410

San DiegoLondon

SAN - LHR

SANLHR

San Diego

sáb 25/10

20:08-07:25

1 stop28h 17m

London Heathrow

qua 5/11

11:10-11:38

1 stop32h 28m

£410

San DiegoLondon

SAN - LHR

SANLHR

San Diego

dom 19/10

19:50-14:20

Nonstop10h 30m

London Heathrow

ter 4/11

12:50-16:10

Nonstop11h 20m

£412

San DiegoLondon

SAN - LHR

SANLHR

San Diego

qua 8/10

06:20-10:00

1 stop19h 40m

London Heathrow

ter 28/10

06:20-19:08

2 stops19h 48m

£416

San DiegoLondon

SAN - LHR

SANLHR

San Diego

qua 22/10

07:25-08:50

2 stops17h 25m

London Heathrow

qua 29/10

06:20-18:43

2 stops19h 23m

£419

San DiegoLondon

SAN - LHR

SANLHR

San Diego

qua 24/9

09:59-08:55

2 stops14h 56m

London Heathrow

qui 2/10

09:00-19:06

2 stops18h 06m

£419

San DiegoLondon

SAN - LHR

SANLHR

San Diego

qua 12/11

06:15-07:50

2 stops17h 35m

London Heathrow

qui 20/11

06:20-16:05

2 stops17h 45m

£419

San DiegoLondon

SAN - LHR

SANLHR

San Diego

qua 12/11

06:15-07:50

2 stops17h 35m

London Heathrow

sex 21/11

06:20-16:05

2 stops17h 45m

£419

San DiegoLondon

SAN - LHR

SANLHR

San Diego

ter 23/9

09:59-08:55

2 stops14h 56m

London Heathrow

ter 30/9

09:00-19:06

2 stops18h 06m

£419

Flights are sorted by cheapest return flights first.

Deals found on 10/9

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 29 August 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 46 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, January is the cheapest month in which you can book a flight from San Diego to London (average of £112). Flying from San Diego to London in August is currently the most expensive (average of £164). 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 setembro 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 22% 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 setembro 2025.

The most flights from SAN to LON are scheduled on a Monday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (3 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.

Denver (DEN) – chosen by Cheapflights users on 25% 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.

San Francisco (SFO) is the most affordable one-stop option, with an average return flight price of £529.

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: 13h 29m.

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 43m.

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 setembro 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
2,929 reviews
Check prices

Entertainment

6.6

Food

6.3

Overall

7.0

Comfort

6.7

Boarding

7.1

Crew

7.6

Reviews

1 / 20
2.0
Mediocre

Gaby,Aug 2025

BCN - ORD

Our flight kept getting delayed due to the weather and mechanical issues. Then it was canceled and rescheduled until the following day which was also delayed by a couple hours and the returning flight was also delayed so overall, we wasted a lot of time on the airport. Also, when it happened the first day, they did not want to honor a hotel or rideshare service voucher because it was hard to find an uber at 3-4 in the morning and customer service was closed that late in the day.
Iberia
7.0
Good
2,929 reviews
Iberia
7.0
Good
2,929 reviews
Check prices

Entertainment

6.6

Food

6.3

Overall

7.0

Comfort

6.7

Boarding

7.1

Crew

7.6

Reviews

1 / 20
2.0
Mediocre

Gaby,Aug 2025

BCN - ORD

Our flight kept getting delayed due to the weather and mechanical issues. Then it was canceled and rescheduled until the following day which was also delayed by a couple hours and the returning flight was also delayed so overall, we wasted a lot of time on the airport. Also, when it happened the first day, they did not want to honor a hotel or rideshare service voucher because it was hard to find an uber at 3-4 in the morning and customer service was closed that late in the day.
British Airways
6.7
Okay
7,361 reviews
Iberia
7.0
Good
2,929 reviews
Check prices

Entertainment

6.6

Food

6.3

Overall

7.0

Comfort

6.7

Boarding

7.1

Crew

7.6

Reviews

1 / 20
2.0
Mediocre

Gaby,Aug 2025

BCN - ORD

Our flight kept getting delayed due to the weather and mechanical issues. Then it was canceled and rescheduled until the following day which was also delayed by a couple hours and the returning flight was also delayed so overall, we wasted a lot of time on the airport. Also, when it happened the first day, they did not want to honor a hotel or rideshare service voucher because it was hard to find an uber at 3-4 in the morning and customer service was closed that late in the day.

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 8 outbound flights to London per day.

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

    Virgin Atlantic, British Airways, and United Airlines can get you from San Diego to London in just under 10h 35m. Your travel time can differ by up to 17h 42m. 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 (£506), offers the cheapest pricing from San Diego to London. British Airways is currently priced 21% 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 (76%), Alaska Airlines (76%) and British Airways (76%).

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

    On average you can expect to pay £475 for a flight from San Diego to London. The cheapest flight overall is £303 while the most popular route, (San Diego - London Heathrow) is currently priced at £381.

  • 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, January is the cheapest month in which you can book a flight from San Diego to London (average of £112). Flying from San Diego to London in August is currently the most expensive (average of £164). 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 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 setembro 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£506Average£706FlexibilityNo 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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