Cheap Flights from Belfast (BFS) to San Francisco (SFO)

Popular airlines from Belfast International Airport (BFS) to San Francisco Intl. Airport (SFO)

Alternative airports near San Francisco

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to San Francisco Intl. SFO. Cheapest and Closest option available. Average driving time to city center is 19 minutes. Flights from $1,299
SFO
San Francisco Intl.
CheapestClosest
Average driving time to city center19 min
Flights from $1,299

Frequently asked questions

How much does a flight from Belfast Intl. Airport (BFS) to San Francisco Intl. Airport (SFO) cost?
Snag a cheap one-way flight or cheap return flight from Belfast Intl. Airport (BFS) to San Francisco Intl. Airport (SFO) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Belfast Intl. Airport (BFS) to San Francisco Intl. Airport (SFO)?
Traveling in may help you find better deals, as it's the cheapest month for flights between BFS and SFO. You'll typically find the lowest prices during off-peak months.
What is the cheapest airline that flies from Belfast Intl. Airport (BFS) to San Francisco Intl. Airport (SFO)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll take you from BFS to SFO. Then, sort your results by "Price (lowest to highest)" to pick up a good deal.
How many flights per day from Belfast Intl. Airport (BFS) to San Francisco Intl. Airport (SFO)?
You'll have to take a flight with a layover if you're traveling from Belfast Intl. Airport (BFS) to San Francisco Intl. Airport (SFO). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from BFS to SFO?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary based on a range of factors, including the carrier and season.*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 Francisco Intl. Airport (SFO)?
To avoid possible delays on the Belfast Intl. Airport (BFS) to San Francisco Intl. Airport (SFO) route, aim to fly before 3 PM. Departures after this time have a 22% higher chance of being 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 Francisco Intl. Airport (SFO) last-minute?
Booking your ticket from BFS to SFO right before your getaway is generally more expensive. However, if there's some wiggle room with your departure dates and times, you could score a cheap last-minute fare.
Is it cheaper to book a BFS to SFO flight and hotel package?
You'll generally save money by booking a BFS to SFO flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. After selecting your ideal flights and accommodations, you can add extras like activities, car rentals and tours.
Can I cancel or change the date of my flight from Belfast Intl. Airport (BFS) to San Francisco Intl. Airport (SFO)?
You can usually reschedule or cancel your BFS to SFO flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Belfast Intl.
Destination airport
San Francisco Intl.
Distance
5029 mi

Book with confidence

Belfast to San Francisco Flights

The cheapest times to fly from Belfast to San Francisco

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 Francisco are during the month of . You can find some of the cheapest flights from Belfast to San Francisco with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Belfast to San Francisco: 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 Francisco

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 Francisco 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 Francisco 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 Francisco 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 Francisco Flights

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*Available to One Key members.