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Cheap flights from the United Kingdom to San Diego from £274

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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAN
17 Jan — 24 Jan1
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 18 December 2025.

Wed 24/1216:30LHR - SAN
1 stop28h 23mBritish Airways
Wed 31/1209:40SAN - LHR
1 stop13h 10mBritish Airways
Deal found 16/12£669
Wed 24/1217:00GLA - SAN
2 stops30h 48mBritish Airways
Wed 7/118:00SAN - GLA
1 stop13h 50mBritish Airways
Deal found 17/12£716
Sat 27/1215:20LHR - SAN
1 stop27h 10mLufthansa
Mon 29/1207:00SAN - LHR
1 stop14h 55mLufthansa
Deal found 17/12£760
Wed 17/1211:40BHX - SAN
2 stops40h 19mAer Lingus
Wed 21/106:20SAN - BHX
2 stops22h 30mAer Lingus
Deal found 15/12£819
Sat 27/1210:05LHR - SAN
2 stops32h 25mUnited Airlines
Mon 29/1208:00SAN - LHR
1 stop14h 40mUnited Airlines
Deal found 17/12£822
Fri 26/1216:30LHR - SAN
1 stop15h 29mBritish Airways
Mon 5/113:13SAN - LHR
1 stop35h 02mBritish Airways
Deal found 17/12£863
Tue 30/1211:10LHR - SAN
1 stop36h 35mLufthansa
Mon 5/122:30SAN - LHR
1 stop23h 25mLufthansa
Deal found 16/12£874
Sat 27/1212:50LHR - SAN
Nonstop11h 20mMultiple Airlines
Mon 29/1209:40SAN - LHR
1 stop13h 10mMultiple Airlines
Deal found 17/12£885
Wed 17/1209:20LHR - SAN
1 stop32h 59mJetBlue
Wed 24/1221:40SAN - LHR
1 stop16h 00mJetBlue
Deal found 16/12£894
Mon 29/1212:50LHR - SAN
Nonstop11h 20mBritish Airways
Mon 5/115:03SAN - LHR
1 stop35h 22mBritish Airways
Deal found 16/12£900
Mon 29/1212:50LHR - SAN
Nonstop11h 20mMultiple Airlines
Mon 5/117:05SAN - LHR
1 stop12h 55mMultiple Airlines
Deal found 17/12£939
Mon 22/1209:20LHR - SAN
1 stop17h 59mJetBlue
Thu 8/121:00SAN - LHR
1 stop15h 45mJetBlue
Deal found 17/12£941

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 18 December 2025.

Round-trip from

£485

One-way from

£274

Popular in

December

Cheapest in

February

Average price

£785

Good round-trip deal

£580 or less

Good one-way deal

£423 or less
British Airways
  • British Airways
  • 2/2-2/3
  • 2 total stops
  • 35h 45m total
  • United Kingdom to San Diego
Search Deals
3/5
  • 3/5
  • 2 total stops
  • 36h 50m total
  • United Kingdom to San Diego
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£22 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 December 2025
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 18 December 2025.
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

ManchesterSan Diego

MAN - SAN

MANSAN

Manchester

Mon 2/2

06:05-16:10

1 stop18h 05m

San Diego

Mon 2/3

18:00-19:40

1 stop17h 40m

£485

Newcastle upon TyneSan Diego

NCL - SAN

NCLSAN

Newcastle upon Tyne

Mon 2/3

12:55-16:10

1 stop35h 15m

San Diego

Mon 9/3

19:00-16:00

1 stop14h 00m

£493

GlasgowSan Diego

GLA - SAN

GLASAN

Glasgow Intl

Mon 12/1

06:35-22:58

2 stops24h 23m

San Diego

Wed 21/1

12:32-14:15

2 stops17h 43m

£494

GlasgowSan Diego

GLA - SAN

GLASAN

Glasgow Intl

Wed 14/1

12:45-08:32

2 stops27h 47m

San Diego

Sun 25/1

16:47-14:30

2 stops37h 43m

£494

GlasgowSan Diego

GLA - SAN

GLASAN

Glasgow Intl

Mon 12/1

14:00-22:58

2 stops40h 58m

San Diego

Wed 21/1

18:00-16:25

1 stop14h 25m

£502

Newcastle upon TyneSan Diego

NCL - SAN

NCLSAN

Newcastle upon Tyne

Mon 2/3

09:40-21:58

2 stops20h 18m

San Diego

Mon 9/3

15:38-14:55

2 stops16h 17m

£505

GlasgowSan Diego

GLA - SAN

GLASAN

Glasgow Intl

Mon 26/1

14:00-15:57

2 stops33h 57m

San Diego

Fri 6/2

16:47-13:20

2 stops36h 33m

£521

GlasgowSan Diego

GLA - SAN

GLASAN

Glasgow Intl

Thu 12/3

15:20-17:10

1 stop32h 50m

San Diego

Mon 16/3

19:00-18:15

1 stop16h 15m

£528

LondonSan Diego

LGW - SAN

LGWSAN

London Gatwick

Mon 26/1

14:00-20:29

1 stop38h 29m

San Diego

Mon 9/2

07:51-06:00

1 stop14h 09m

£553

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Fri 6/2

13:30-00:15

2 stops18h 45m

San Diego

Thu 12/2

11:05-09:40

2 stops14h 35m

£553

Flights are sorted by cheapest return flights first.

Deals found on 16/12

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 £339). Flying from United Kingdom to San Diego in August is currently the most expensive (average of £415). 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 18 December 2025.

It’s optimal to fly from United Kingdom to San Diego at midday. By choosing this option you can save up to 10% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from United Kingdom to San Diego?

Use this chart to determine the cheapest time to fly return from United Kingdom to San Diego. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their United Kingdom to San Diego flight should consider departing on Saturday evenings when fares are most often at their lowest. Saturday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

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 146 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 18 December 2025.
Read through reviews of airlines operating flights from the United Kingdom to San Diego, such as Finnair, Virgin Atlantic, andIberia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,338 reviews
Check prices

Entertainment

6.9

Boarding

7.6

Overall

7.6

Food

6.7

Crew

8.1

Comfort

7.4

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Finnair
7.6
Good
1,338 reviews
Finnair
7.6
Good
1,338 reviews
Check prices

Entertainment

6.9

Boarding

7.6

Overall

7.6

Food

6.7

Crew

8.1

Comfort

7.4

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Virgin Atlantic
7.5
Good
675 reviews
Finnair
7.6
Good
1,338 reviews
Check prices

Entertainment

6.9

Boarding

7.6

Overall

7.6

Food

6.7

Crew

8.1

Comfort

7.4

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Iberia
7.0
Good
3,050 reviews
Finnair
7.6
Good
1,338 reviews
Check prices

Entertainment

6.9

Boarding

7.6

Overall

7.6

Food

6.7

Crew

8.1

Comfort

7.4

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Lufthansa
6.8
Okay
7,634 reviews
Finnair
7.6
Good
1,338 reviews
Check prices

Entertainment

6.9

Boarding

7.6

Overall

7.6

Food

6.7

Crew

8.1

Comfort

7.4

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
British Airways
6.7
Okay
7,585 reviews
Finnair
7.6
Good
1,338 reviews
Check prices

Entertainment

6.9

Boarding

7.6

Overall

7.6

Food

6.7

Crew

8.1

Comfort

7.4

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.

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?

    British Airways, Finnair, and United Airlines can get you from United Kingdom to San Diego in just under 18h 05m. Your travel time can differ by up to 17h 10m. There are 5327 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 (£311), British Airways (£388), and Iberia (£456).

  • 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 (78%), Alaska Airlines (78%) and British Airways (78%).

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

    On average you can expect to pay £2,021 for a flight from United Kingdom to San Diego. The cheapest flight overall is £381 while the most popular route, (London Heathrow - San Diego) is currently priced at £400.

  • 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 £339). Flying from United Kingdom to San Diego in August is currently the most expensive (average of £415). 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 18 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£388Average£516FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
FinnairCheapest£399Average£566FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£402Average£633FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£404Average£586FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£410Average£611FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air FranceCheapest£417Average£427FlexibilityNo cancel feeOn-time77%
Search Air France flights
United AirlinesCheapest£422Average£637FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£427Average£636FlexibilityNo cancel feeOn-time75%
Search KLM flights
JetBlueCheapest£456Average£824FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
American AirlinesCheapest£470Average£624FlexibilityNo cancel feeOn-time71%
Search American Airlines 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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