LON - SAN

£275 Find Cheap Flights from London to San Diego

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to San Diego departing on 8/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Diego

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to San Diego.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to San Diego.
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Everything you should know

Cheapest return fare
£455
Typical prices: £492-£739
United Airlines
Tue 17/3Sun 22/3
LHR - SAN • 1 stop
Cheapest direct flights
£527
Typical prices: £531-£767
British Airways
Wed 18/3Sun 22/3
LHR - SAN • Direct
Advice from real travellers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Finnair's A350 offers a more comfortable journey.
Upgrade to BA's premium economy for extra legroom.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
United Airlines
Cheapest • from £455 (return)
Virgin Atlantic
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Every day
You can fly direct with British Airways. Average duration is 11h 20m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top routes
LHR
-
SAN
Cheapest
LHR
-
SAN
Most popular
Insights
Insights
Insights
Insights
Avoid delays
British Airways
Most punctual • 84% on-time
Morning flights
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top stopover airports
Vancouver (YVR)
Cheapest • Avg £385 (return)
Amsterdam (AMS)
Shortest trip • 13h 20m (one-way)
Insights
Insights
Insights
Insights
When to book
2 weeks
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 14% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 19% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to San Diego!
Flight Deals
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Expert advice
Flight Deals

Cheap Flights from London to San Diego (LON-SAN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from London to San Diego that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from London to San Diego

Tue, 17 Mar - Sun, 22 Mar
United Airlines Logo
10:05 - 18:33
LHR
-
SAN
15h 28m
1 stop
United Airlines Logo
22:30 - 21:20
SAN
-
LHR
15h 50m
1 stop
£455United Airlines
Fri, 13 Mar - Mon, 23 Mar
JetBlue Logo
08:05 - 19:52
LHR
-
SAN
18h 47m
1 stop
JetBlue Logo
21:05 - 21:40
SAN
-
LHR
17h 35m
1 stop
£463JetBlue
Mon, 16 Mar - Thu, 19 Mar
JetBlue Logo
12:20 - 09:33
LHR
-
SAN
28h 13m
1 stop
JetBlue Logo
20:39 - 06:55
SAN
-
LHR
27h 16m
1 stop
£464JetBlue
Thu, 19 Mar - Tue, 24 Mar
JetBlue Logo
07:25 - 19:52
LHR
-
SAN
19h 27m
1 stop
JetBlue Logo
10:44 - 09:30
SAN
-
LHR
15h 46m
1 stop
£465JetBlue
Tue, 17 Mar - Sat, 28 Mar
Delta Logo
13:00 - 22:59
LHR
-
SAN
16h 59m
1 stop
Delta Logo
09:50 - 09:00
SAN
-
LHR
16h 10m
1 stop
£484Delta
Mon, 13 Apr - Wed, 22 Apr
SWISS Logo
09:25 - 22:59
LGW
-
SAN
21h 34m
2 stops
SWISS Logo
06:20 - 08:25
SAN
-
LGW
18h 05m
2 stops
£531SWISS
Tue, 21 Apr - Thu, 30 Apr
SWISS Logo
09:25 - 22:59
LGW
-
SAN
21h 34m
2 stops
SWISS Logo
13:35 - 17:50
SAN
-
LGW
20h 15m
2 stops
£547SWISS
Tue, 14 Apr - Tue, 21 Apr
Virgin Atlantic Logo
09:20 - 20:42
LCY
-
SAN
19h 22m
2 stops
Virgin Atlantic Logo
13:40 - 16:40
SAN
-
LCY
19h 00m
1 stop
£596Virgin Atlantic
Tue, 14 Apr - Tue, 21 Apr
Virgin Atlantic Logo
08:25 - 20:51
LCY
-
SAN
20h 26m
2 stops
Virgin Atlantic Logo
13:40 - 16:40
SAN
-
LCY
19h 00m
1 stop
£597Virgin Atlantic
Mon, 13 Apr - Thu, 7 May
British Airways Logo
19:15 - 22:49
LCY
-
SAN
35h 34m
2 stops
British Airways Logo
11:01 - 15:15
SAN
-
LCY
20h 14m
2 stops
£632British Airways
Booking Insights

KAYAK’s insights & trends for London to San Diego flights

Get data-powered insights and trends into flights from London to San Diego to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from London to San Diego?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from London to San Diego departing in March.

What is the cheapest London to San Diego flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from London to San Diego costs £538 on the route between London Heathrow Airport (LHR) and San Diego (SAN). It is also the most popular route.

What’s the cheapest day of the week to fly from London to San Diego?

The average price of all round-trip flights from London to San Diego clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to San Diego on a Monday and more expensive on a Sunday. On your return trip to London, you should consider flying back on a Monday, and avoid Saturdays for better deals.

What is the cheapest month to fly from London to San Diego?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to San Diego, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London to San Diego is January, where tickets cost £489 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is £814 and £756 respectively.

Can I save money by flying with a stopover from London to San Diego?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 1 stop stopover the cheapest option at £602 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London to San Diego, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from London to San Diego, you should book around 2 weeks before departure, which saves you about 14% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Expert advice

Expert advice for your flight from London to San Diego

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Duncan Madden

Duncan Madden

Expert on British Airways

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Gabriel Leigh

Gabriel Leigh

Expert on Finnair

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Good to know - Cheap tickets from London to San Diego

Low seasonJanuary
Cheapest flight£275
Best time to beat the crowds (19% less expensive on average)
Most popular time to fly (25% more expensive on average)
Flight from London Stansted Airport to San Diego

When to book flights from London to San Diego

Are your dates flexible? Find out the best times to travel from London to San Diego based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from London to San Diego

  • How can I travel into downtown San Diego and the surrounding area from SAN Airport?

    There is a city bus on Route 992 that can take you from the airport to downtown San Diego, which will pick you up from Terminal 1 or 2. On weekdays it works from 05:00 to 23:30 every 15min and on the weekends and holidays every 30min. Tickets are around $2.50 (£1.80). You can also connect with the Amtrak Intercity and COASTER trains by taking the Route 992 bus from the airport to San Diego Santa Fe Depot train station in San Diego downtown, taking you to Los Angeles from around $30 (£22) and Orange Counties from approximately $25 (£18).

  • Is it possible to rent a car from SAN airport?

    Yes, the airport has over ten car rental companies for you to choose from, including SIXT, Hertz, Avis, and Enterprise. You’ll collect a car from the airport’s Consolidated Rental Car Centre, which is located outside the airport. There’s a free shuttle bus that can take you from your terminal to the rental centre 24/7, simply follow the signs from the terminal to the car rental bus service.

  • What accessibility services does SAN Airport offer?

    After arriving at the airport you can request a wheelchair for transportation through the airport. You’ll need to contact your airline before flying to request wheelchair services. There are also Volunteer Airport Ambassadors, Airport Traffic Officers, and Harbour Police Officers inside and outside the terminals who can help you if you need assistance. The airport also has TDD telephones and visual paging monitors. You’ll find service animal relief areas throughout Terminal 1 and 2, both curbside and within the building.

  • Is there secure baggage storage at SAN Airport?

    SAN Airport has a Baggage Storage service at around $20 (£14.50) per bag per day, payable by card only. You’ll find the kiosks inside the Baggage Claim area in Terminal 1 and 2. They can also deliver it to you for free if you’re within 15 miles of SAN Airport. You can either make a reservation at the kiosk or online. They also offer curbside delivery and pick up.

  • Which major airlines offer the best stopover routes from London to San Diego (SAN)?

    There are several major airlines offering routes between these cities, but airlines like Iberia, Virgin Atlantic, and Icelandair offer some of the most affordable options. Virgin Atlantic has single-stopover flights via Atlanta or New York, while Iberia offers single-stopover flights that go direct or have a single stop at Dallas/Fort Worth (DFW). Icelandair flights have two stops in Keflavik and Seattle en route.

  • What routes does British Airways offer from London to San Diego?

    British Airways is a popular choice for many travellers and offers a couple of different routes. A direct flight is the most convenient, but more expensive. Various stopover flights stop in cities like Chicago, Seattle, Phoenix, and San Francisco.

  • What is the baggage policy for American Airlines flights between these cities?

    American Airlines standard Economy tickets all have the same baggage policy. You can take a single carry-on cabin bag and one checked-in bag weighing up to 23 kg. During the booking process, you can add extra luggage for a price. This is usually cheaper than paying for extra in person.

  • How can I decrease my Co2 emissions on these flights?

    Flights with reduced Co2 emissions are an ideal way to lower your carbon footprint on these flights. KLM and Austrian Airlines have the best options on this route. KLM offers flights from Heathrow with a stopover in Los Angeles and 38% fewer emissions. Austrian Airlines has flights from Heathrow with a stopover in Los Angeles.

  • What is the cheapest flight from London to San Diego?

    In the last 3 days, the lowest price for a flight from London to San Diego was £275 for a one-way ticket and £455 for a return.

  • Which airports will I be using when flying from London to San Diego?

    There are 6 airports in London (London City, London Gatwick, London Heathrow, London Luton, London Southend, and London Stansted.) and only 1 airport in San Diego (San Diego). The cheapest flights are generally found on the London Heathrow Airport to San Diego flight route.

  • Which airlines offer Wi-Fi service onboard planes from London to San Diego?

    Only KLM offers inflight Wi-Fi service on the London to San Diego flight route.

  • Which aircraft models fly most regularly from London to San Diego?

    The Boeing 777 is the aircraft model that flies most regularly on the London to San Diego flight route.

  • Which airline alliances offer flights from London to San Diego?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between London and San Diego, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from London to San Diego?

    There are direct flights from London to San Diego on a daily basis.

  • Which is the best airline for flights from London to San Diego, KLM or Finnair?

    The two airlines most popular with KAYAK users for flights from London to San Diego are KLM and Finnair. With an average price for the route of £652 and an overall rating of 7.7, KLM is the most popular choice. Finnair is also a great choice for the route, with an average price of £636 and an overall rating of 7.6.

  • How does KAYAK find such low prices on flights from London to San Diego?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to San Diego.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to San Diego?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Diego from London is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London to San Diego?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to San Diego with an airline and back to London with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to San Diego?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Diego from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from London to San Diego

  • Looking for a cheap flight from London to San Diego? 25% of our users found flights on this route for £375 or less one-way and £663 or less round-trip.
  • At San Diego International Airport (SAN) you’ll find a Travelex Currency Exchange booth in Terminal 2 by the Baggage Reclaim area. It’s open 05:00 to 20:00 every day of the week. There are also several ATMs throughout the airport for you to withdraw your money from.
  • If you discover that you have forgotten or lost something of yours at SAN Airport then you can arrange to collect it from the airport or they can post it to you. They keep things found in the terminals, at curbside areas, and in shuttles for 90 days, but items such as cosmetics, toiletries, and pillows only for 7 days.
  • There are several hotels within a 5min drive of SAN Airport, such as Holiday Inn Express and Comfort Inn & Suites. Both of these hotels have a free shuttle service from the airport.
  • There are two cafes within Terminal 1 and 2 of SAN Airport that are open 24h. There are also several vending machines where you can buy refreshments 24/7.
  • SAN Airport has a Traveller’s Aide service to help you if you find yourself stranded or distressed. The volunteers are in the Baggage Claim area in Terminal 1 and 2 and they can assist you in emergencies and with enquiries between 08:00 and 23:00.
  • London Heathrow Airport (LHR) is an ideal choice for passengers with children due to its family-friendly amenities. The airport offers dedicated children's play areas, baby-changing facilities, and family-friendly restaurants. It also provides services like stroller rentals. Additionally, the airport has spacious terminals with a wide range of shops and entertainment options.
  • If you're booking cheap flights from London Gatwick (LGW), consider using public transport rather than expensive taxis. The Gatwick Express is the most convenient option and takes about 30 minutes from London Victoria Station. The train leaves from the station every 15 minutes.

Prefer to fly direct from London to San Diego?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from London to San Diego.
Find which airlines fly direct from London to San Diego Airport, which days they fly and book direct flights.

Direct departures

London to San Diego

Monday

British Airways

British Airways

Tuesday

British Airways

British Airways

Wednesday

British Airways

British Airways

Thursday

British Airways

British Airways

Friday

British Airways

British Airways

Saturday

British Airways

British Airways

Sunday

British Airways

British Airways

See more direct flights

Direct returns

San Diego to London

Monday

British Airways

British Airways

Tuesday

British Airways

British Airways

Wednesday

British Airways

British Airways

Thursday

British Airways

British Airways

Friday

British Airways

British Airways

Saturday

British Airways

British Airways

Sunday

British Airways

British Airways

See more direct flights

Reviews of the top 5 airlines flying from London to San Diego

 
See real verified KAYAK customer reviews for airlines flying from London to San Diego. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from London to San Diego? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
Virgin AtlanticOverall score based on 680 reviews
8.2Crew
7.3Comfort
7.6Entertainment
6.9Food
7.7Boarding
Airline reviews

My seat 3G did not go down fully and the buttons were not working properly

8.0 ExcellentAditya, Feb 2026
LHR - JFK
Read more Virgin Atlantic reviews

My seat 3G did not go down fully and the buttons were not working properly

Food has been disappointing in both legs of flight to india

Great staff great experience, made a 2 hour delay very bearable

Great staff, great experience, made a 2 hour delay very bearable

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

Great crew - old style upper class seats on the older fleet now feels dated

It was amazing. I had several upgraded seats on my flight out. Everything went smooth with no delays.

Flight delayed for more than 16 hrs and no effort was spent to provide an alternate

Flight attendants were friendly & good service, food sucks, seats uncomfortable, not many Asian movies or shows flying from Hong Kong

Flight attendants had a little attitude. Food tastes no good.

Overall we had a good experience during our flight from San Francisco to Houston.

it was a very short flight so my expectations were low.

Good flight. However, when booked flight with United, assumed the layover included by United in San Francisco of 1 hr and 40 minutes was sufficient . Not so and would recommend at least 2 hours or more. Needed to go through US immigration (very long lineups), then pick up bags, take all the way to another terminal, running because we did not have sufficient time. We made the flight because they held the door for us but luggage didn’t follow.

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Flight delayed. WiFi connectivity very poor if not existant. Last minute arrival forced me to run to catch my connection.

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

The flight attendant use 1.5 hours to answer my call. My dirty food tray was unattended.

The flight was completely full. Crew was not happy. Everyone was rude and brusque. Travelling with an arm in a cast and seating in the first row of economy cabin (in front of the separation) I needed help retrieving my tray for the meal. A staff member literally threw the tray on my lap, without helping to take out the tray. Boarding was messy, with 300 people waiting in an encloses space with low ceiling. I will try to avoid AA next time I have a long flight.

We are too tired and frustrated to comment politely at this point

The business class seats are dated and uncomfortable. The space is bare minimum and there is absolutely no privacy. For $4K, this is not what I expect.

Flight, food and crew were all good, friendly and very satisfactory.

Lost luggage after 2 days no word leaving on cruise no stuff or clothes

Staff's did their best to make everyone comfortable and I appreciate them for it

My flight was delayed for several hours. Sitting at gate 16 for several hours, I got a text from Kayak the gate changed to 9 before it was announced. Very bad communication at each gate from American Airlines employees. I received 10 notifications of delay from Kayak. My vacation started off horrible! I will write to American Airlines corporate office also.

Pathetic check in experience once again. Not enough staff scheduled at bag drop or for special assistance at LHR. Really need to rethink the whole self check in procedure. The crew was good. A very decent selection of special meals in this leg as compared to the JFK-LHR leg.

Very clean and comfortable cabin. Amazing Mediterranean salad for lunch before landing. Great range of films to watch. Really quiet and easy to sleep on the flight also. The initial food was a bit weird: odd fried chicken pieces in some weird white gloop, but that would be my lack of cultural knowledge on the grub. Salad more than made up for it at the other end. Staff were super attentive and helpful. Great and easy flight

Flight map did not work. Crew was great, food was good, plane took off on time and landed early. That's all I can ask.

Patrick and the whole crew were amazing! Hope to have this team for all my European trips.

Smooth flight with enough time for connection. Ran out of meal options. In-flight and gate staff were friendly and helpful. Good service overall.

Paid for exit row at the back of the plane. Window seat with lots of leg space. Food was inedible (as usual). Brought my own.

They don’t give information on why a flight is delayed in a timely manner. Very frustrating.

The plane (Mitsubishi CRJ) felt old, creaking and not very new. The crew was okay. Hot water provision was broken so hot beverages could't be served.

Best flight attendants ever! Very customer and service oriented, courteous, professional and helpful.

Never happened. Flight was delayed. Had to be re rojyed

Lufthansa is my favorite airline and have flown oversea with them for the past 25 years: i always found them so professional and incredibly efficient from checking in to arrival. I also love their Munich or Frankfurt airports.

We paid for business class, and my seat did not work at all. Each time I wanted to adjust the position, an attendant had to come to physically force the seat into its new position. They tried to fix it by fiddling with the electronics (military reset, for example), to no avail. Also, the food was just mediocre. We were at the end of a serving section, so they ran out of several choices. (This was on the flight from Los Angeles to Munich.)

Late takeoff, but on time landing. Lost bags, 3 days to find them, still in transit to my location. Power outlets broken, Wi-Fi not working, so much for working on the long flight.

Good. For a long flight. The comfort of the seat could be better. Also, the food was « normal » plane food. Not indian plane food unfortunately! Everything else was smooth and great.

The seats were comfortable. So many empty seats allowed for stretching out and sleeping. The onboard entertainment was pretty good. The cabin crew were so kind and kept the passengers well- hydrated, and well fed.

We had American Airlines on our return and it was confusing if we were going with Aa or BA I had 2 different flight numbers and didn’t get our gate until it was boarding. So we were a bit nervous as the which it was

My touch screen at my seat wasn't working, the films BA advertised on the website for this flight were not available, and the plane was a little dated, food was good and the staff were good, just let down by the aircraft facilities.

Did not like the seating configuration at all with 2+3+2 in business class. Lacking total privacy and comfort

Check-in experience, for business call please provide a premium experience

Lost my luggage, ran out of food choices in business class, ground crew was completely unapologetic.

Excellent. The crew and flight were great. Checking in was easy and everyone was very helpful.

Entertainment devices on A380 need to be fixed, the seats might do with updates.

Everything you need to know for your flight from London to San Diego

Other airlines flying from London to San Diego

Flights from the other most popular airlines that fly from London to San Diego according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.