537 € Cheap Flights from San Francisco International to Belfast

Compare San Francisco International to Belfast flight deals

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Flight deals from San Francisco International to Belfast

Looking for a cheap last-minute deal or the best return flight from San Francisco International to Belfast? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from San Francisco International to Belfast

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Francisco International to Belfast flights are currently cheapest in November.

Alternative San Francisco International to Belfast routes

Looking for the cheapest, fastest or easiest route from San Francisco International to Belfast? You could fly into the following airports instead.

San Francisco to Belfast: Flight information

The things to know before you go.
Cheapest flight found537 €
Cheapest month to flyNovember

Finding cheap flights from San Francisco International to Belfast: Frequently asked questions

There are 2 airports in Belfast: Belfast City and Belfast International.
The best price we found for a return flight from San Francisco International to Belfast is 537 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from San Francisco International to Belfast. But we found flights with one or more stops from 537 €.
As of September 2025, there are no flights flying from San Francisco International to Belfast.
The cheapest month to fly from San Francisco International to Belfast is usually November.
If you're flying from San Francisco International Airport, the cheapest airport near Belfast is Belfast City – which is 3.7 km away from the centre of Belfast. We've found flights into this airport from 537 €.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Francisco International Airport to Belfast on Wednesday, 19 November 2025.
No airlines currently offer direct flights between San Francisco International Airport and Belfast. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Belfast but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Belfast is around 40 days in advance, so don’t leave your flight to the last minute.
In September, the average temperature is usually around 13°C. August is typically the warmest month in Belfast, when it usually averages around 17°C. You can expect the least rain in May. The coldest month is January, with temperatures averaging 4°C. The rainiest month is October.
Currently, KLM offers the cheapest flight tickets to Belfast.

Travelling from San Francisco International Airport (SFO) to Belfast: what you need to know

  • San Francisco International Airport is located in San Francisco. Following the UTC+0 timezone, Belfast is seven hours ahead of San Francisco.

  • For hassle-free travel, turn up at the airport two hours ahead of international flights and an hour before domestic departures. That way, you won't have to rush to catch your SFO to Belfast flight.

  • If you're travelling during a major holiday or another peak period, allow extra time. A good general rule is two hours ahead of domestic flights and up to four hours before international departures. Lines at check-in and security will be longer.

  • Think about adding a stopover to potentially find a cheaper plane ticket from SFO to Belfast. All you need to do is uncheck 'Direct flights only' during your search. Give yourself a breather (and maybe even a better deal) by stopping at one of these popular airports:

    • London Heathrow Airport (LHR)

    • Amsterdam Airport Schiphol (AMS)

    • Frankfurt Airport (FRA)

  • Travelling from central San Francisco to SFO takes about 45 minutes by public transport. If you ride-share, drive or grab a cab, you'll cover the 18 kilometres in 20 minutes or so, depending on traffic conditions.

  • Catching an early flight from San Francisco International Airport to Belfast? Avoid rushing to the terminal (and sneak in some extra snooze time) by choosing one of these stays close to SFO:

  • Of all flights leaving San Francisco International Airport, 77.36% arrive as scheduled at their destination.

How to find the cheapest flights from San Francisco International Airport (SFO) to Belfast

  • 355 € is the cheapest price we've seen for a one-way San Francisco International Airport to Belfast flight. A round-trip ticket right now is 537 €. Depending on when you want to go and the availability, these fares could change.

  • Booking in advance is often the key to finding a cheap flight from SFO to Belfast. Fares tend to rise as seats fill up, so the closer you get to departure, the more it could cost you.

  • Finding cheap tickets from San Francisco International Airport to Belfast is easier if you can be flexible with your travel plans. Try using the 'Whole month' function to access the lowest fares across every month and score a sweet deal.

  • Spend less time searching for cheap flights from SFO to Belfast by setting up a Price Alert. You'll receive an email or notification on the app when fares go down.

  • Pick your preferred arrival and departure times, number of stops and airlines with our filters. Then, sort the results for your flight from San Francisco International Airport to Belfast by 'Fastest,' 'Cheapest' or 'Best.'

Airports in Belfast

Belfast International Airport (BFS)

  • The distance from Belfast International Airport (BFS) to central Belfast is roughly 32 kilometres. It takes about 30 minutes to reach the centre driving.

  • It typically takes 2 hours if you're travelling on public transport.

  • If you're arriving on a late flight from San Francisco International Airport to Belfast, nothing beats the convenience of staying close to the terminal. Collect your bags from the carousel and then be showered and relaxing not long after at one of these accommodation options near BFS:

  • Pick up a Belfast International Airport rental car and explore Belfast and beyond with your own set of wheels. Budget, Drivalia and Dollar are popular outlets you can book with here.

  • Booking your ride from Belfast International Airport around three weeks ahead of your flight from SFO to Belfast can help you secure the lowest rate.

George Best Belfast City Airport (BHD)

  • After your flight from San Francisco International Airport to Belfast has hit the tarmac, you can make your way to the city centre in about 10 minutes by car. Central Belfast is roughly 8 kilometres from George Best Belfast City Airport (BHD).

  • If you choose to travel on public transport, the ride to the centre will take you 20 minutes or so.

  • You'll find some comfortable places to rest your head close to BHD. Unwind and get cosy after your SFO to Belfast flight at any of these well-located options:

  • The quickest way to reach your destination is with a George Best Belfast City Airport rental car. Grab your wheels from Budget, Sixt or Alamo and be off and running.

  • Get exactly what you want. Securing your ride from BHD two weeks in advance often means better prices and a wider choice of vehicles.

Best time to go to Belfast

  • Carefully consider your travel dates before locking in your flight from San Francisco International Airport to Belfast. The city buzzes in peak season, but hotel prices are typically higher and major attractions can get busy. Go to Belfast in low season for a quieter vibe.

  • When booking your San Francisco International Airport to Belfast plane ticket, think about the weather you're most comfortable in. July is the warmest month in Belfast, with temperatures ranging from 10ºC (50ºF) to 19ºC (66ºF).

  • If you like cooler conditions, search for a cheap ticket from SFO to Belfast in January when temperatures average between 1ºC (34ºF) and 8ºC (46ºF).

More about Belfast

  • Once you've booked your flight from San Francisco International Airport to Belfast, choose a hotel that combines comfort with a great location. Make one of these accommodation options your base for exploring Belfast:

  • Crumlin Road Gaol Visitor Attraction and Conference Centre and Titanic Belfast are just the start of the top-rated attractions to put on your Belfast travel itinerary. Keep the sightseeing going at Botanic Gardens.

Explore more of United Kingdom

  • Belfast is easy to fall in love with, but there are so many other corners of United Kingdom waiting to be discovered. About 354 kilometres south-east of Belfast, a trip to Birmingham will keep you on the go. Don't miss top attractions like Cadbury World, The Library of Birmingham and National Sea Life Centre.

  • Bristol is another well-known destination in United Kingdom and is around 418 kilometres south-east of Belfast. No journey is complete without seeing Clifton Suspension Bridge, Cabot Tower and Brandon Hill Nature Park.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.