LON - SAN

$321 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 6/4. 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, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to San Diego, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$687
Overall average: $782
United Airlines
Sat 4/11Sat 4/18
LHR - SAN • 1 stop
Cheapest non-stop
$765
Typical prices: $720-$1,055
British Airways
Tue 4/21Tue 4/28
LHR - SAN • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
American Airlines' Main Cabin Extra includes early boarding.
Take the Route 992 bus from SAN for a quick downtown ride.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
United Airlines
Cheapest • from $687 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop 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 layover airports
Munich (MUC)
Cheapest • Avg $599 (round-trip)
Los Angeles (LAX)
Shortest trip • 13h 41m (one-way)
Insights
Insights
Insights
Insights
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 20% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 19% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to San Diego!
Flight Deals
Booking Insights
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 round-trip 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 round-trip flight deals from London to San Diego

Sat, Apr 11 - Sat, Apr 18
United Airlines Logo
11:25 am - 9:32 pm
LHR
-
SAN
18h 07m
1 stop
United Airlines Logo
8:00 am - 6:55 am
SAN
-
LHR
14h 55m
1 stop
$687United Airlines
Tue, Apr 14 - Wed, May 6
British Airways Logo
10:05 am - 6:05 pm
LHR
-
SAN
16h 00m
1 stop
British Airways Logo
3:09 pm - 12:15 pm
SAN
-
LHR
13h 06m
1 stop
$705British Airways
Tue, Apr 21 - Tue, Apr 28
Lufthansa Logo
7:25 am - 3:25 pm
LHR
-
SAN
16h 00m
1 stop
Lufthansa Logo
12:40 pm - 9:40 am
SAN
-
LHR
13h 00m
1 stop
$710Lufthansa
Mon, Apr 13 - Thu, May 7
Lufthansa Logo
6:30 am - 8:12 pm
LHR
-
SAN
21h 42m
2 stops
Lufthansa Logo
5:15 pm - 6:25 pm
SAN
-
LHR
17h 10m
1 stop
$712Lufthansa
Mon, Apr 20 - Mon, Apr 27
Lufthansa Logo
8:25 pm - 3:25 pm
LHR
-
SAN
27h 00m
1 stop
Lufthansa Logo
5:15 pm - 6:25 pm
SAN
-
LHR
17h 10m
1 stop
$714Lufthansa
Mon, May 4 - Sun, May 10
United Airlines Logo
7:25 am - 3:25 pm
LHR
-
SAN
16h 00m
1 stop
United Airlines Logo
10:20 pm - 9:35 pm
SAN
-
LHR
15h 15m
1 stop
$716United Airlines
Tue, Apr 14 - Wed, May 6
British Airways Logo
10:05 am - 6:28 pm
LHR
-
SAN
16h 23m
1 stop
British Airways Logo
4:45 pm - 11:30 am
SAN
-
LHR
10h 45mnonstop
$732British Airways
Mon, Apr 13 - Thu, May 7
SWISS Logo
9:25 am - 10:59 pm
LGW
-
SAN
21h 34m
2 stops
SWISS Logo
1:35 pm - 5:50 pm
SAN
-
LGW
20h 15m
2 stops
$735SWISS
Mon, Apr 13 - Wed, Apr 22
SWISS Logo
9:25 am - 10:59 pm
LGW
-
SAN
21h 34m
2 stops
SWISS Logo
6:20 am - 8:25 am
SAN
-
LGW
18h 05m
2 stops
$746SWISS
Mon, Apr 20 - Mon, May 11
American Airlines Logo
12:20 pm - 11:56 pm
LGW
-
SAN
19h 36m
2 stops
American Airlines Logo
6:15 am - 8:40 am
SAN
-
LGW
18h 25m
2 stops
$760American Airlines
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 round-trip flight from London to San Diego?

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

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 $970 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 Tuesday and more expensive on a Thursday. On your return trip to London, you should consider flying back on a Monday, and avoid Thursdays 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 $656 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $1,091 and $982 respectively.

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

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $905 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 3 weeks before departure, which saves you about 20% 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 and LHR

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.

Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Marisa Garcia

Marisa Garcia

Expert on Iberia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Brandon Schultz

Brandon Schultz

Expert on SAN

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Good to know

Low seasonJanuary
Cheapest flight$321
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from London Gatwick 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 round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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.

  • 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 $321 for a one-way ticket and $687 for a round-trip.

  • Do I need a passport to fly between London and San Diego?

    A passport is required to fly from London to San Diego.

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

    There are 2 airports in London (London Gatwick and London Heathrow.) 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?

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

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

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

  • Which is the best airline for flights from London to San Diego, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from London to San Diego are United Airlines and American Airlines. With an average price for the route of $863 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $839 and an overall rating of 7.1.

  • 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 round-trip 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? 25% of our users found flights on this route for $610 or less one-way and $1,030 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.

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 4 airlines serving 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.
7.4
United AirlinesOverall score based on 9408 reviews
7.1Entertainment
8.1Crew
7.3Comfort
7.7Boarding
6.6Food
Airline reviews

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

10.0 ExcellentEric, Mar 2026
NRT - LAX
Read more United Airlines reviews

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

Very nice staff, terrible food, not very comfortable premium economy.

Boarding, crew, food and baggage handling excellent (no bags lost, yay!). However for an 8 hour flight, there were limited entertainment options. And really would have liked to have a pillow!

The crew was super friendly and helpful. The food was quite good. An overall positive experience.

Plane delayed due to weather. Plane boarded, then told to unboard due to a maintenance issue.

A more organized boarding experience and better food would have made the experience better.

Was all good.l including a sofdrink. AA improved significantly. There was no entertainment.

why can't planes be boarded from back to front?? everything was great otherwise

We flew into Barcelona and the plane was so cramped and very uncomfortable and dirty. But we flew out of Madrid and that plane was much better. Would fly Iberia again.

For what we are willing to pay for international air travel, our experience was very good. We had no problem checking in, we had very little wait time at the AA counter in Madrid, and the staff in Madrid were very helpful. The flight crew was helpful and courteous, the plane was on the newer side, and our assigned seats were together without us needing to purchase them. The flight took off on time and arrived early. Overall, it was a pleasant experience or as much as could be expected in economy for almost 10 hours.

Boarding was easy, the flight left on time and even landed 20 minutes early. The food was plentiful and really good! The crew was kind & helpful. Overall it was an exceptional experience!

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

Information on your arrival and departure airports