A lifeguard tower, beach umbrellas, and rocky cliffs at a crowded beach.

£345 Cheap Flights to San Diego County

View £345 flight on Thu, 29 Oct 2026Opens in a new window

Popular airlines to San Diego County

  • Alaska Airlines

  • American Airlines

  • United

  • Delta

  • Frontier Airlines

  • Southwest Airlines

  • JetBlue Airways

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Cheap round-trip flights to San Diego County

Prices were available within the past 7 days and start at £345 for one-way flights and £438 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, 18 Jan - Tue, 19 Jan
LHR
London
SAN
San Diego
£438 Return, found 22 hours ago
£438
Return
found 22 hours ago
Select United flight, departing Mon, 18 Jan from London to San Diego, returning Tue, 19 Jan, priced at £438 found 22 hours ago
Brussels Airlines
Wed, 21 Oct - Mon, 26 Oct
LHR
London
SNA
Orange County
£441 Return, found 1 day ago
£441
Return
found 1 day ago
Select Brussels Airlines flight, departing Wed, 21 Oct from London to Orange County, returning Mon, 26 Oct, priced at £441 found 1 day ago
Lufthansa
Mon, 26 Oct - Tue, 3 Nov
LHR
London
SNA
Orange County
£445 Return, found 3 days ago
£445
Return
found 3 days ago
Select Lufthansa flight, departing Mon, 26 Oct from London to Orange County, returning Tue, 3 Nov, priced at £445 found 3 days ago
Air Canada
Mon, 19 Oct - Tue, 20 Oct
LHR
London
SNA
Orange County
£445 Return, found 2 hours ago
£445
Return
found 2 hours ago
Select Air Canada flight, departing Mon, 19 Oct from London to Orange County, returning Tue, 20 Oct, priced at £445 found 2 hours ago
KLM
Fri, 9 Oct - Thu, 15 Oct
LHR
London
SNA
Orange County
£446 Return, found 7 hours ago
£446
Return
found 7 hours ago
Select KLM flight, departing Fri, 9 Oct from London to Orange County, returning Thu, 15 Oct, priced at £446 found 7 hours ago
Swiss International Air Lines
Thu, 29 Oct - Wed, 4 Nov
LGW
London
SNA
Orange County
£446 Return, found 1 day ago
£446
Return
found 1 day ago
Select Swiss International Air Lines flight, departing Thu, 29 Oct from London to Orange County, returning Wed, 4 Nov, priced at £446 found 1 day ago
Air France
Mon, 12 Oct - Sun, 25 Oct
LHR
London
SNA
Orange County
£459 Return, found 3 hours ago
£459
Return
found 3 hours ago
Select Air France flight, departing Mon, 12 Oct from London to Orange County, returning Sun, 25 Oct, priced at £459 found 3 hours ago
Delta
Thu, 29 Oct - Sat, 7 Nov
LHR
London
SNA
Orange County
£459 Return, found 4 hours ago
£459
Return
found 4 hours ago
Select Delta flight, departing Thu, 29 Oct from London to Orange County, returning Sat, 7 Nov, priced at £459 found 4 hours ago
Virgin Atlantic
Wed, 10 Mar - Tue, 23 Mar
LHR
London
SNA
Orange County
£465 Return, found 4 hours ago
£465
Return
found 4 hours ago
Select Virgin Atlantic flight, departing Wed, 10 Mar from London to Orange County, returning Tue, 23 Mar, priced at £465 found 4 hours ago
Swiss International Air Lines
Tue, 8 Sept - Tue, 15 Sept
LHR
London
SNA
Orange County
£466 Return, found 16 hours ago
£466
Return
found 16 hours ago
Select Swiss International Air Lines flight, departing Tue, 8 Sept from London to Orange County, returning Tue, 15 Sept, priced at £466 found 16 hours ago

Trending flights to San Diego County

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, 18 Jan - Tue, 19 Jan
LHR
London
SAN
San Diego
£438 Return, found 22 hours ago
£438
Return
found 22 hours ago
Select United flight, departing Mon, 18 Jan from London to San Diego, returning Tue, 19 Jan, priced at £438 found 22 hours ago

Frequently asked questions

Can I cancel my flight booking to San Diego County due to COVID-19?
If you haven't booked yet, look through the terms and conditions of your preferred carrier. If you've already purchased your flight to San Diego County, click through to our Customer Service Portal. It will help you determine which COVID-19 policies apply to your booking and provide advice on the next steps.
What's the best way to find cheap flights to San Diego County that have flexible change policies?
It's as easy as can be with Expedia. Step 1: Type in your travel details and click "Search." Step 2: Check the "No change fee" box directly below the "Flexible change policies" heading to the left of the screen. Step 3. Snag your flexible and cheap flight to San Diego County.
What are some of the general tips for travellers to San Diego County during the COVID-19 outbreak?
With new COVID-19 rules and measures in place, travel looks a little different at present. Here's what you need to know before you pack your bags for San Diego County:
  • Find out if any travel restrictions apply to your origin and destination before locking in your flight. Also check if there are any special conditions you'll need to follow on arrival, such as proof of a negative COVID-19 test.
  • Wear a face mask even during airport screening. A TSA employee will ask you to temporarily lower your mask to verify your identity.
  • To reduce the risk of cross-contamination, place your boarding pass on the scanner yourself and then hold it up for inspection. Do not hand your boarding pass directly to a TSA officer.
  • You're allowed to take one container of hand sanitizer up to 12 oz (350 ml) in your hand luggage. This will need to be removed for X-ray scanning.
  • Put any personal items (keys, wallet and phone) in your carry-on instead of a bin to reduce handling during screening.
  • If you're bringing food through the security checkpoint, place it in a clear plastic bag and then into a screening bin. This lessens the likelihood that a TSA agent will need to touch your food container or carry-on bag for inspection.
  • Find out if any travel restrictions apply to your origin and destination before locking in your flight. Also check if there are any special conditions you'll need to follow on arrival, such as proof of a negative COVID-19 test.
  • Wear a face mask even during airport screening. A TSA employee will ask you to temporarily lower your mask to verify your identity.
  • To reduce the risk of cross-contamination, place your boarding pass on the scanner yourself and then hold it up for inspection. Do not hand your boarding pass directly to a TSA officer.
  • You're allowed to take one container of hand sanitizer up to 12 oz (350 ml) in your hand luggage. This will need to be removed for X-ray scanning.
  • Put any personal items (keys, wallet and phone) in your carry-on instead of a bin to reduce handling during screening.
  • If you're bringing food through the security checkpoint, place it in a clear plastic bag and then into a screening bin. This lessens the likelihood that a TSA agent will need to touch your food container or carry-on bag for inspection.
Which airlines fly to San Diego County?
Let American Airlines take you there. This leading carrier runs 759 services each month to San Diego Intl. Airport (SAN), a San Diego County gateway.
How can I find cheap tickets to San Diego County?
Book in advance, travel on a cheaper day, avoid peak travel periods — there's no shortage of ways! Another one is to make use of Expedia's "flexible dates" function. Search for your San Diego County flight, then compare the cheapest prices for nearby dates. In the last seven days, the best price for a flight to San Diego County was £438.
How much is a flight to San Diego County?
If you were journeying one way from London (LGW), you could've scored a bargain seat for just £345 in the last seven days. Return flights to San Diego County ranged from only £438 to £466 over the same period.
What are the most popular airports to fly into in San Diego County?
San Diego Intl. Airport (SAN) is the main gateway for those hoping to explore San Diego County. Around 6709 flights every month touch down at this airport.
When is the cheapest time to fly to San Diego County?
What better way to start the weekend than jetting off on a holiday? Booking your domestic flight for a Saturday could set you up for savings of up to 25%. Mondays usually have the most expensive domestic airfares. For international flights, catch your flight on a Thursday for the highest chance of saving on your airfare. If you're hoping to save money, Sunday flights are frequently found to be the most expensive, so plan around that.
How much is a plane ticket to San Diego County?
In the last seven days, seats to San Diego County ranged between £438 and £466. Prices depend on a number of things, particularly the departure time, seating class, airline and when you make your booking.
Which airlines with flights to San Diego County employ COVID-19 cleanliness policies?
As passengers and cabin crew start travelling once again, nearly all airlines have implemented physical distancing and other precautionary measures to help combat COVID-19. Here are just a few examples:
  • Southwest Airlines - this airline is known for providing passenger masks and cleaning with disinfectant.
  • Alaska Airlines - this airline is known for providing passenger masks and cleaning with disinfectant.
  • American Airlines - this airline is known for providing passenger masks and cleaning with disinfectant.
  • Southwest Airlines - this airline is known for providing passenger masks and cleaning with disinfectant.
  • Alaska Airlines - this airline is known for providing passenger masks and cleaning with disinfectant.
  • American Airlines - this airline is known for providing passenger masks and cleaning with disinfectant.
What are the best things to do in San Diego County?
  • Packed with culture, energy and excitement, Carlsbad is an excellent place to kick off your San Diego County adventure. Tour popular attractions like Legoland California, hit up the stores or wine and dine your way around some of this destination's inviting restaurants and bars. What you decide to do is up to you!
  • When selecting what sort of clothes to pack for your trip, take into account that Carlsbad has a mediterranean climate. For a better idea of what to expect, study the weather before you set off.
  • Roughly 9 miles to the north of Carlsbad, Oceanside also deserves to be high on your itinerary. Noteworthy sights at this location include Mission San Luis Rey Church — don't forget to drop by.
  • Packed with culture, energy and excitement, Carlsbad is an excellent place to kick off your San Diego County adventure. Tour popular attractions like Legoland California, hit up the stores or wine and dine your way around some of this destination's inviting restaurants and bars. What you decide to do is up to you!
  • When selecting what sort of clothes to pack for your trip, take into account that Carlsbad has a mediterranean climate. For a better idea of what to expect, study the weather before you set off.
  • Roughly 9 miles to the north of Carlsbad, Oceanside also deserves to be high on your itinerary. Noteworthy sights at this location include Mission San Luis Rey Church — don't forget to drop by.

Book with confidence

Top tips for booking flights to San Diego County from UK

Get ready to fly to San Diego County

Prepare your luggage and book your flights to San Diego County with Expedia. We offer a seamless flight booking experience, with a wide range of San Diego County plane tickets to choose from. If you need help finding some of the best deals for cheap flights to San Diego County in 2026, we are always available to assist you. Book your flights to San Diego County today and let the adventure begin!

Find the best tickets to San Diego County

To find some of the best tickets to San Diego County in 2026, use Expedia's powerful search engine to compare dates and the different departure and arrival airports for your trip. Whether you're after direct flights to San Diego County or last-minute flights to San Diego County, you can filter and sort your search results, making it easy to find the ideal flight to San Diego County.

Airlines fly to San Diego County

There are 20 different airlines that fly to San Diego County including some of the most trusted names in the business. To book flights to San Diego County with your favourite airline, take a look at Expedia's flight listings and try out different dates to find some of the best San Diego County plane tickets.

Find the cheapest flights to San Diego County

By booking early you may find some of the best deals for San Diego County flights from the UK, including San Diego County direct flights. You can usually find affordable and cheap flights to San Diego County, whether one-way from £345 or round-trip from £438, with Expedia if you book your trip far enough in advance.

Find the best airports for cheap flights to San Diego County

Try searching for different San Diego County airports with Expedia to find some of the cheapest flights to San Diego County. Flights from London (LGW) to Orange County (SNA) usually have the lowest price from £345.

Why book your flights to San Diego County with Expedia

Expedia offers great deals on San Diego County air fares from £345 to cater to every budget. Not only is Expedia one of the top platforms to book flights to San Diego County from the UK, it is also your one-stop shop for booking hotels, car rentals, and more.

 

*Prices and availability are subject to change. Additional terms apply.

Top tips for booking flights to San Diego County from UK

Travel information

San Diego County Flights Information

Airlines serving
American Airlines, Alaska Airlines, British Airways, Lufthansa, Iberia, Brussels Airlines, United, Air Canada, Swiss International Air Lines, KLM, Air France, Delta, Virgin Atlantic
Roundtrip price
from £438
San Diego County Flights Information

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