Cheap flight tickets from San Francisco International to Belfast

Compare San Francisco International to Belfast flight deals

Find the cheapest month or even day of the year to fly to Belfast

Book the best Belfast fare with no extra fees

Flight deals from San Francisco International to Belfast

Looking for a cheap last-minute deal or the best return flight from San Francisco International Airport to Belfast? If you want to travel next month, return fares start from RM6,161. 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 August.

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 foundRM1,266
Cheapest month to flyAugust

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 RM3,469. 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 RM3,469.
As of May 2026, there are no flights flying from San Francisco International to Belfast.
The cheapest month to fly from San Francisco International to Belfast is usually October.
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 RM3,469.
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, 21 October 2026.
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 May, the average temperature is usually around 10°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, British Airways offers the cheapest flight tickets to Belfast.

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

  • The timezone in Belfast is UTC+0. The city is eight hours ahead of San Francisco, where San Francisco International Airport is located.

  • For a relaxed start to your SFO to Belfast flight, leave enough time to check in and find your gate. Turning up two hours before international departures and one hour before domestic flights is the general rule.

  • You'll likely experience bigger queues in popular months such as July. Arriving up to four hours in advance for international flights and two hours for a domestic departure is a smart move.

  • We make it easy to book plane tickets from SFO to Belfast with a stopover. To see the options, uncheck 'Direct flights only.' Next, pick a flight offering a stop long enough to tour your chosen city. Well-traveled stopover hubs include:

    • London Heathrow Airport (LHR)

    • Amsterdam Schiphol Airport (AMS)

    • Frankfurt Airport (FRA)

  • SFO is about 18 kilometres from central San Francisco. If you're catching a taxi, driving or ride-sharing from the centre, it'll take 25 minutes or so to get there, depending on traffic. If you're taking public transport, expect the trip time to be around 35 minutes.

  • Booked an early flight from San Francisco International Airport to Belfast? Avoid the hassle of rushing to the airport (and get some extra shut-eye) by choosing one of these hotels near SFO:

  • Of the flights that depart from San Francisco International Airport, 78% touch down on time at their destination.

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

  • RM1,266 is currently the lowest price for a one-way San Francisco International Airport to Belfast flight. Return plane tickets start at RM3,469. These fares can change based on availability.

  • Booking ahead of time is often the key to locking in a cheap flight from SFO to Belfast. Prices tend to rise as demand increases, so the closer you get to departure, the more it could cost you.

  • The 'Whole month' search tool will show you the cheapest tickets from San Francisco International Airport to Belfast across every month. It's an easy way to find a bargain if your travel dates aren't set in stone.

  • Save time searching for cheap flights from SFO to Belfast by setting up a Price Alert. You'll get an email or notification through the app when a lower fare pops up.

  • Tailor your flights with filters. Select your preferred arrival and departure times, airlines and total journey duration. You can also sort the results by 'Cheapest,' 'Best' or 'Fastest' flights from San Francisco International Airport to Belfast.

Airports in Belfast

Belfast International Airport (BFS)

  • The distance from Belfast International Airport (BFS) to central Belfast is roughly 19 kilometres. It'll take you around 25 minutes to get to the centre driving.

  • Travelling on public transport takes about 45 minutes.

  • If you're coming in on a late flight from San Francisco International Airport to Belfast, few things beat the convenience of staying close to the terminal. Grab your luggage from the carousel and then be showered and sleeping not long after at one of these hotels near BFS:

  • Booking your ride from Belfast International Airport around three weeks in advance of your flight from SFO to Belfast can help you get the best possible rate.

George Best Belfast City Airport (BHD)

  • The centre of Belfast is around 5 kilometres from George Best Belfast City Airport (BHD). After your flight from San Francisco International Airport to Belfast has landed and you've navigated your way to arrivals, the drive should take about 15 minutes.

  • The trip will take roughly 25 minutes on public transport.

  • Place the 'Do not disturb' sign on your door and rest at a hotel near BHD. Here are a few options where you can take a load off after your SFO to Belfast flight:

  • Snap up a deal by securing your ride from BHD two weeks ahead of time. You'll also have access to a wider selection of vehicles.

Best time to go to Belfast

  • September is the busiest month for flights from San Francisco International Airport to Belfast. To steer clear of the crowds, head to Belfast in January.

  • The warmest month in Belfast is July, with temperatures ranging between 9ºC (48ºF) and 19ºC (66ºF). Lock in your San Francisco International Airport to Belfast plane ticket then if that's your idea of comfortable weather.

  • Look for cheap tickets from SFO to Belfast in January if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between 1ºC (34ºF) and 8ºC (46ºF) on average.

More about Belfast

Explore more of the United Kingdom

  • You've seen Belfast, now it's time to explore more of the United Kingdom. Travel about 274 kilometres southeast to Manchester to check off its top attractions. From Manchester United Museum & Stadium Tour to The Homes of Football and Museum of Science and Industry, you'll have a packed itinerary ahead.

  • Around 354 kilometres southeast of Belfast, Birmingham is another essential stop in the United Kingdom. Experience the best of this destination with a visit to Birmingham Museum & Art Gallery, Birmingham Hippodrome Theatre and Bournville Experience.

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