Cheap Flights from Belfast (BFS) to San Diego (SAN)

Popular airlines from Belfast International Airport (BFS) to San Diego Intl. Airport (SAN)

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Find the cheapest month to fly from Belfast (BFS) to San Diego (SAN)

February is typically the cheapest month to fly

From $516 - $1,249 per traveler.

Frequently asked questions

How much does a flight from Belfast Intl. Airport (BFS) to San Diego Intl. Airport (SAN) cost?
Get a cheap one-way flight or cheap return flight from Belfast Intl. Airport (BFS) to San Diego Intl. Airport (SAN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Belfast Intl. Airport (BFS) to San Diego Intl. Airport (SAN)?
The cheapest month to fly from BFS to SAN is , when there's less demand. Off-peak months are typically when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Belfast Intl. Airport (BFS) to San Diego Intl. Airport (SAN)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll fly you from BFS to SAN. Then, sort your results by "Price (lowest to highest)" to snag a good deal.
How many flights per day from Belfast Intl. Airport (BFS) to San Diego Intl. Airport (SAN)?
There are no daily direct flights departing from Belfast Intl. Airport (BFS) to San Diego Intl. Airport (SAN). But you can book flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from BFS to SAN?
Typically you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* However, this can vary based on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Belfast Intl. Airport (BFS) to San Diego Intl. Airport (SAN)?
Opt for a flight from Belfast Intl. Airport (BFS) to San Diego Intl. Airport (SAN) that takes off before 3 PM to reduce the risk of cancellations. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Belfast Intl. Airport (BFS) to San Diego Intl. Airport (SAN) last-minute?
Waiting until right before your break to book a flight from BFS to SAN generally means paying more. While it's possible to find some last-minute offers, they aren't always guaranteed. Keep your travel plans flexible for the best chance of scoring a bargain.
Is it cheaper to book a BFS to SAN flight and hotel package?
Opting for a BFS to SAN flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Choose from our extensive range of stays and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Belfast Intl. Airport (BFS) to San Diego Intl. Airport (SAN)?
If you booked your BFS to SAN flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

Travel information

Origin airport
Belfast Intl.
Destination airport
San Diego Intl.
Distance
5148 mi

Book with confidence

Belfast to San Diego Flights

The cheapest times to fly from Belfast to San Diego

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Belfast to San Diego are during the month of . You can find some of the cheapest flights from Belfast to San Diego with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Belfast to San Diego

Sunday is one of the best days to book for cheap flights from Belfast to San Diego: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Belfast to San Diego

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Belfast to San Diego in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Belfast to San Diego flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Belfast to San Diego airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Belfast to San Diego Flights

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*Available to One Key members.