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Cheap flights from the United Kingdom to San Diego from £248

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 15/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAN
6 Mar — 13 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to San Diego

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to San Diego
Explore the most affordable flight options available from United Kingdom to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 February 2026.

Mon 23/209:20
LHR
-
SAN
1 stop33h 12m
JetBlue
Wed 4/315:35
SAN
-
LHR
1 stop31h 20m
JetBlue
Deal found 2/2£432
Mon 2/308:05
LHR
-
SAN
1 stop19h 55m
JetBlue
Mon 16/321:05
SAN
-
LHR
1 stop17h 35m
JetBlue
Deal found 3/2£433
Fri 6/312:50
LHR
-
SAN
Nonstop11h 20m
British Airways
Tue 17/319:00
SAN
-
LHR
Nonstop10h 35m
British Airways
Deal found 3/2£434
Mon 23/209:20
LHR
-
SAN
1 stop18h 04m
JetBlue
Mon 9/312:49
SAN
-
LHR
1 stop13h 41m
JetBlue
Deal found 2/2£436
Mon 2/312:00
LHR
-
SAN
1 stop17h 25m
United Airlines
Thu 19/313:53
SAN
-
LHR
1 stop13h 22m
United Airlines
Deal found 3/2£439
Fri 6/311:35
LHR
-
SAN
1 stop13h 51m
United Airlines
Thu 19/309:54
SAN
-
LHR
1 stop14h 31m
United Airlines
Deal found 3/2£440
Thu 5/313:35
LHR
-
SAN
1 stop17h 05m
United Airlines
Sat 14/307:05
SAN
-
LHR
1 stop16h 15m
United Airlines
Deal found 3/2£441
Tue 3/307:25
LHR
-
SAN
1 stop20h 03m
JetBlue
Fri 6/321:10
SAN
-
LHR
1 stop16h 50m
JetBlue
Deal found 3/2£452
Wed 4/312:50
LHR
-
SAN
Nonstop11h 20m
British Airways
Sun 15/319:00
SAN
-
LHR
Nonstop10h 35m
British Airways
Deal found 3/2£454
Thu 5/309:20
LHR
-
SAN
1 stop18h 08m
JetBlue
Sat 14/321:35
SAN
-
LHR
1 stop26h 20m
JetBlue
Deal found 2/2£459
Sun 15/307:55
LGW
-
SAN
2 stops34h 52m
Multiple Airlines
Tue 24/322:02
SAN
-
LGW
1 stop28h 58m
Multiple Airlines
Deal found 3/2£508
Wed 11/313:00
LGW
-
SAN
1 stop34h 38m
Multiple Airlines
Tue 24/322:02
SAN
-
LGW
1 stop28h 58m
Multiple Airlines
Deal found 3/2£527

Find flight deals from United Kingdom to San Diego

Keep the following information in mind while searching for United Kingdom to San Diego flight deals. Data was last updated 4 February 2026.

Round-trip from

£432

One-way from

£248

Popular in

December

Cheapest in

February

Average price

£477

Good round-trip deal

£510 or less

Good one-way deal

£513 or less
JetBlue
  • JetBlue
  • 23/2-4/3
  • 2 total stops
  • 64h 32m total
  • United Kingdom to San Diego
Search Deals
15/4
  • 15/4
  • 3 total stops
  • 57h 10m total
  • United Kingdom to San Diego
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£21 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from United Kingdom to San Diego.
Search Deals
Price to beat on a one-way flight from United Kingdom to San Diego.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom to San Diego 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 4 February 2026.
Use the filters below to find and compare flights from the United Kingdom to San Diego that are best for you.

Fly from

United Kingdom

Fly to

San Diego

Route

Depart

Return

Price

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Mon 2/3

09:30-20:49

2 stops19h 19m

San Diego

Mon 9/3

11:03-09:40

2 stops15h 37m

£520

LondonSan Diego

LGW - SAN

LGWSAN

London Gatwick

Wed 11/3

13:00-16:38

1 stop34h 38m

San Diego

Tue 24/3

22:02-10:00

1 stop28h 58m

£527

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Mon 27/4

18:05-14:18

2 stops28h 13m

San Diego

Sun 3/5

22:30-07:50

1 stop25h 20m

£535

GlasgowSan Diego

GLA - SAN

GLASAN

Glasgow Intl

Tue 3/3

06:05-12:05

1 stop14h 00m

San Diego

Tue 17/3

15:00-16:35

1 stop18h 35m

£540

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Thu 19/3

06:35-16:45

1 stop17h 10m

San Diego

Thu 26/3

06:15-07:25

2 stops18h 10m

£544

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Fri 13/3

06:35-16:45

1 stop17h 10m

San Diego

Tue 24/3

12:16-10:15

1 stop14h 59m

£544

Newcastle upon TyneSan Diego

NCL - SAN

NCLSAN

Newcastle upon Tyne

Mon 2/3

17:35-12:05

1 stop26h 30m

San Diego

Mon 9/3

09:50-10:20

2 stops17h 30m

£554

Newcastle upon TyneSan Diego

NCL - SAN

NCLSAN

Newcastle upon Tyne

Tue 3/3

06:00-12:05

1 stop14h 05m

San Diego

Tue 10/3

07:30-10:20

2 stops19h 50m

£555

GlasgowSan Diego

GLA - SAN

GLASAN

Glasgow Intl

Tue 3/3

06:05-12:05

1 stop14h 00m

San Diego

Tue 17/3

07:00-08:30

2 stops18h 30m

£556

BirminghamSan Diego

BHX - SAN

BHXSAN

Birmingham

Tue 3/3

10:45-22:44

2 stops19h 59m

San Diego

Tue 10/3

18:35-17:00

1 stop15h 25m

£558

Flights are sorted by cheapest return flights first.

Deals found on 2/2

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

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

What is the cheapest month to book a flight from United Kingdom to San Diego?

Currently, December is the cheapest month in which you can book a flight from United Kingdom to San Diego (average of £324). Flying from United Kingdom to San Diego in July is currently the most expensive (average of £405). 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 GB to SAN?

Find hourly flight availability from United Kingdom to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 February 2026.

When flying from United Kingdom to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How often are flights from the United Kingdom to San Diego delayed?

About 16% of weekly flights between United Kingdom and San Diego have experienced delays in the past year, with the average delay time being 152 minutes.

What is the most punctual flight time for the United Kingdom to San Diego flights?

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

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

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

Which airline has the best punctuality record on the United Kingdom to San Diego flights?

Over the past year, British Airways have had the lowest number of delays on this route, with just 16% of flights being delayed.

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated 4 February 2026.
Read through reviews of airlines operating flights from the United Kingdom to San Diego, such as KLM, Virgin Atlantic, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,448 reviews
Check prices

Overall

7.7

Food

7.3

Boarding

7.8

Entertainment

7.1

Crew

8.4

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,448 reviews
KLM
7.7
Good
1,448 reviews
Check prices

Overall

7.7

Food

7.3

Boarding

7.8

Entertainment

7.1

Crew

8.4

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Virgin Atlantic
7.5
Good
678 reviews
KLM
7.7
Good
1,448 reviews
Check prices

Overall

7.7

Food

7.3

Boarding

7.8

Entertainment

7.1

Crew

8.4

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
United Airlines
7.4
Good
9,236 reviews
KLM
7.7
Good
1,448 reviews
Check prices

Overall

7.7

Food

7.3

Boarding

7.8

Entertainment

7.1

Crew

8.4

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Lufthansa
6.8
Okay
7,759 reviews
KLM
7.7
Good
1,448 reviews
Check prices

Overall

7.7

Food

7.3

Boarding

7.8

Entertainment

7.1

Crew

8.4

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
British Airways
6.7
Okay
7,716 reviews
KLM
7.7
Good
1,448 reviews
Check prices

Overall

7.7

Food

7.3

Boarding

7.8

Entertainment

7.1

Crew

8.4

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to San Diego. 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 Diego from United Kingdom?

    Most people fly into San Diego (SAN) if they book a flight to San Diego from United Kingdom. San Diego is conveniently located just 2.6 mi from San Diego’s city center.

  • How long is the flight from United Kingdom to San Diego?

    United Airlines, Finnair, and Air France can get you from United Kingdom to San Diego in just under 14h. Your travel time can differ by up to 14h 13m. There are 5153 mi between United Kingdom and San Diego. 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 United Kingdom to San Diego one-way?

    The cheapet airlines for a one-way flight from United Kingdom to San Diego are JetBlue (£304), British Airways (£314), and Iberia (£376).

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

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

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

    The top 3 most reliable airlines when flying from United Kingdom to San Diego are American Airlines (71%), Alaska Airlines (71%) and Aer Lingus (71%).

  • What are the cheapest flights from United Kingdom to San Diego?

    On average you can expect to pay £1,925 for a flight from United Kingdom to San Diego. The cheapest flight overall is £376 while the most popular route, (London Heathrow - San Diego) is currently priced at £325.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from United Kingdom to San Diego 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 United Kingdom to San Diego?

    Currently, December is the cheapest month in which you can book a flight from United Kingdom to San Diego (average of £324). Flying from United Kingdom to San Diego in July is currently the most expensive (average of £405). 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

Travelling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
El Cajon

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Alternative routes for United Kingdom to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from United Kingdom to San Diego

Discover the top 10 airlines that operate flights from United Kingdom to San Diego. 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 4 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£379Average£504FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
FinnairCheapest£390Average£613FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest£409Average£542FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£414Average£621FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£423Average£636FlexibilityNo cancel feeOn-time75%
Search KLM flights
British AirwaysCheapest£427Average£617FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£438Average£617FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Virgin AtlanticCheapest£458Average£623FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
IberiaCheapest£467Average£603FlexibilityNo cancel feeOn-time77%
Search Iberia flights
JetBlueCheapest£474Average£985FlexibilityNo cancel feeOn-time62%
Search JetBlue 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 United Kingdom to San Diego?

Deals for United Kingdom to San Diego 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 United Kingdom to San Diego?

Cheapflights simply makes it quick and affordable to book flights from United Kingdom to San Diego by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from United Kingdom to San Diego with no change fees?

Certainly. Search results for flights to San Diego from United Kingdom shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Diego from United Kingdom today and book when prices fit your budget.

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