Cheap flights from San Diego to London from $304
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Diego to London departing on 8/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from San Diego to London
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
Air Canada flights from San Diego to London Heathrow Airport
Our best Air Canada deals on San Diego to London Heathrow Airport flight tickets
United Airlines flights from San Diego to London Heathrow Airport
Our best United Airlines deals on San Diego to London Heathrow Airport flight tickets
See travel insights to London from
How to get the cheapest flight ticket from San Diego to London Heathrow Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to London Heathrow Airport?
The month of January is, on average, the cheapest month to fly to London Heathrow Airport from San Diego, with most prices found around $712. If you’re not able to fly to London Heathrow Airport in January, then February is your next best option. Flight prices from San Diego to London Heathrow Airport during February average around $733.
What is the cheapest day to depart on your flight to London Heathrow Airport?
Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $890. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $1,116.
What is the cheapest time of day to depart on your flight to London Heathrow Airport?
According to our data, the cheapest time of day to fly to London Heathrow Airport is at noon. momondo users have found flights departing from San Diego to London Heathrow Airport at noon for as low as $908. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $981.
What is the cheapest San Diego to London Heathrow flight route?
Fly from San Diego to London Heathrow for the best San Diego - London Heathrow flight prices
How far in advance should I book a flight to London Heathrow Airport?
You are more likely to see cheaper flights to London Heathrow Airport from San Diego when booking 7 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $914 when searching 7 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from San Diego for as low as $771 on momondo.
What cabin class options are available on San Diego to London Heathrow flights?
There are 4 cabin classes available to choose from on San Diego to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from San Diego to London Heathrow?
JetBlue, Air Canada, and WestJet are the most popular carriers operating from San Diego to London Heathrow
What airlines fly to London Heathrow Airport?
British Airways, American Airlines and Iberia are the top three most popular airlines that fly to London Heathrow Airport from San Diego according to our data. British Airways is the first choice among our users, with 59% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 11 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from San Diego to London Heathrow Airport on average per day?
The number of flights available between San Diego and London Heathrow Airport is 7 per day as of June 2025. The most frequent departure time is 7:00PM, with 61% of daily flights leaving in the evening.
How many flights depart from San Diego to London Heathrow Airport on average per week?
As of June 2025, 53 flights take off from San Diego and land in London Heathrow Airport each week. The most common flight departure day for this route is Wed, with 17% of weekly flights taking off on this day.
When to book flights from San Diego to London Heathrow Airport
Cheap San Diego to London Heathrow Airport (SAN to LHR) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Diego to London Heathrow Airport
How far is San Diego to London Heathrow by plane?
London Heathrow is 5468.7 mi away from San Diego. Typically, this will take 10h 25m by plane in normal conditions.
When did momondo last update prices for flights from San Diego Airport to London Heathrow Airport?
Prices for flights from San Diego Airport to London Heathrow Airport refresh daily.
How many operators does momondo search for flights from San Diego Airport to London Heathrow Airport?
As of June 2025, there are 10 operators available to choose from for flights from San Diego Airport to London Heathrow Airport.
How old do you have to be to fly from San Diego Airport to London Heathrow Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Diego Airport to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The required travel and health documents for your London Heathrow Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from San Diego to London Heathrow Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from San Diego to London Heathrow Airport is Boeing 787-8 Dreamliner (61.45% of total bookings). The next most popular plane models are Boeing 777-300 (21.98%), Airbus A350-1000 (7.30%), and Boeing 777 (3.25%).
What is the most popular airline from San Diego to London Heathrow Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from San Diego to London Heathrow Airport is British Airways (61% of total bookings). The next most popular airlines are Iberia (15%), American Airlines (13%), and JetBlue (3%).
Best airlines flying from San Diego to London Heathrow Airport
Compare and see reviews for airlines that fly from San Diego to London Heathrow Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $589 | Free Cancellation | Rating 7.0 2,776 reviews | |||
| PriceFrom $590 | Free Cancellation | Rating 6.7 7,139 reviews | |||
| PriceFrom $595 | Free Cancellation | Rating 7.6 1,290 reviews | |||
| PriceFrom $597 | Free Cancellation | Rating 7.3 2,925 reviews | |||
| PriceFrom $611 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $620 | Free Cancellation | Rating 7.4 652 reviews | |||
| PriceFrom $633 | Free Cancellation | Rating 6.6 7,008 reviews | |||
| PriceFrom $653 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $677 | Free Cancellation | Rating 8.0 7,946 reviews | |||
| PriceFrom $828 | Free Cancellation | Rating 8.0 10,000 reviews |
Alaska Airlines Flights From San Diego to London Heathrow Airport
Alaska Airlines is one of the most popular airlines flying from San Diego to London Heathrow Airport, operating 13 flights/week on average for this route. A good Alaska Airlines flight deal for San Diego to London Heathrow Airport starts from $828 round-trip, up to an average price of $951. Our users have rated Alaska Airlines at 8.0/10.
Finnair Flights From San Diego to London Heathrow Airport
$595 is the best Finnair flight deal from San Diego to London Heathrow Airport found on momondo over the last 72 hours. The average Finnair ticket price found was closer to $692, however, with flight time and availability significantly affecting the price. Finnair (7.6/10 from 1,290 user reviews) flies into London Heathrow Airport from San Diego 6 times in an average week so prices can vary.
Traveling to a place near London?
Book flights to London if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from San Diego to London?
It is quick and easy to find San Diego to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.
Can I find flights from San Diego to London with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to London from San Diego with this policy.
How can momondo help me find flights from San Diego to London?
momondo helps you find the best flight between San Diego and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from San Diego to London right now. Can momondo alert me if prices change?
If you are not ready to book a flight from San Diego to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.