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Cheap flights from San Francisco to Belfast from £196

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 Francisco to Belfast departing on 15/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from San Francisco to Belfast

Cheap return flights

Logo
16:05 - 22:25SFO-BFS
22h 20m1 stop
Logo
07:00 - 19:30BFS-SFO
20h 30m1 stop
£495
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Sun, 21 Sep - Mon, 6 Oct
Logo
11:55 - 22:25SFO-BFS
26h 30m2 stops
Logo
07:00 - 19:30BFS-SFO
20h 30m1 stop
£537
Find Deal
Sun, 21 Sep - Mon, 6 Oct
Logo
15:40 - 22:25SFO-BFS
22h 45m2 stops
Logo
06:45 - 19:30BFS-SFO
20h 45m1 stop
£541
Find Deal
Sun, 21 Sep - Mon, 6 Oct
Logo
11:55 - 22:25SFO-BFS
26h 30m2 stops
Logo
07:00 - 23:33BFS-SFO
24h 33m2 stops
£558
Find Deal
Sun, 21 Sep - Mon, 6 Oct
Logo
21:20 - 22:25SFO-BFS
17h 05m1 stop
Logo
06:10 - 19:30BFS-SFO
21h 20m1 stop
£566
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Sun, 21 Sep - Mon, 6 Oct
Logo
16:20 - 23:10SFO-BFS
22h 50m3 stops
Logo
07:35 - 17:50BFS-SFO
42h 15m3 stops
£628
Find Deal
Wed, 8 Oct - Fri, 24 Oct
Logo
16:20 - 20:25SFO-BFS
20h 05m2 stops
Logo
06:20 - 13:35BFS-SFO
39h 15m3 stops
£629
Find Deal
Mon, 15 Sep - Mon, 22 Sep
Logo
16:20 - 23:00SFO-BFS
22h 40m3 stops
Logo
06:20 - 13:35BFS-SFO
39h 15m3 stops
£641
Find Deal
Mon, 15 Sep - Mon, 22 Sep
Logo
19:40 - 22:20SFO-BFS
18h 40m3 stops
Logo
07:15 - 16:30BFS-SFO
17h 15m2 stops
£645
Find Deal
Sun, 21 Sep - Mon, 6 Oct
Logo
17:40 - 22:20SFO-BFS
20h 40m2 stops
Logo
07:15 - 15:55BFS-SFO
16h 40m2 stops
£653
Find Deal
Sun, 21 Sep - Mon, 6 Oct

momondo Fare Finder

 
Customise your flight search to find flights from San Francisco to Belfast Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 2 August 2025.
Use the filters below to find and compare flights from San Francisco to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sun 21/9

16:05-22:25

1 stop22h 20m

Belfast Intl

Mon 6/10

07:00-19:30

1 stop20h 30m

£495

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sun 21/9

11:55-22:25

2 stops26h 30m

Belfast Intl

Mon 6/10

07:00-19:30

1 stop20h 30m

£537

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sun 21/9

15:40-22:25

2 stops22h 45m

Belfast Intl

Mon 6/10

06:45-19:30

1 stop20h 45m

£541

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sun 21/9

11:55-22:25

2 stops26h 30m

Belfast Intl

Mon 6/10

07:00-23:33

2 stops24h 33m

£558

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sun 21/9

21:20-22:25

1 stop17h 05m

Belfast Intl

Mon 6/10

06:10-19:30

1 stop21h 20m

£566

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Wed 8/10

16:20-23:10

3 stops22h 50m

Belfast Intl

Fri 24/10

07:35-17:50

3 stops42h 15m

£628

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Mon 15/9

16:20-20:25

2 stops20h 05m

Belfast Intl

Mon 22/9

06:20-13:35

3 stops39h 15m

£629

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Mon 15/9

16:20-23:00

3 stops22h 40m

Belfast Intl

Mon 22/9

06:20-13:35

3 stops39h 15m

£641

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sun 21/9

19:40-22:20

3 stops18h 40m

Belfast Intl

Mon 6/10

07:15-16:30

2 stops17h 15m

£645

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sun 21/9

17:40-22:20

2 stops20h 40m

Belfast Intl

Mon 6/10

07:15-15:55

2 stops16h 40m

£653

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Belfast from

How to get the cheapest flight ticket from San Francisco to Belfast Intl 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 Belfast Intl Airport?

The month of October is, on average, the cheapest month to fly to Belfast Intl Airport from San Francisco, with most prices found around £445. If you’re not able to fly to Belfast Intl Airport in October, then April is your next best option. Flight prices from San Francisco to Belfast Intl Airport during April average around £470.

When to book flights from San Francisco to Belfast Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from San Francisco to Belfast Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap San Francisco to Belfast Intl Airport (SFO to BFS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Francisco to Belfast Intl Airport

Best price found

£196

Fastest flight time

17h 05m

Direct flights

None
The best one-way flight to Belfast Intl Airport from San Francisco in the past 72 hours is £196. The best return flight deal from San Francisco to Belfast Intl Airport found on momondo in the last 72 hours is £495.
The fastest flight from San Francisco to Belfast Intl Airport takes 17h 05m
There are no direct flights from San Francisco to Belfast Intl Airport. Popular non-direct route for this connection is San Francisco Airport - Belfast Intl Airport.
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  • How far is San Francisco to Belfast Intl by plane?

    Belfast Intl is 5016.8 mi away from San Francisco. Flights usually cover this in 17h 05m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from San Francisco Airport to Belfast Intl Airport?

    Prices for flights from San Francisco Airport to Belfast Intl Airport refresh daily.

  • How old do you have to be to fly from San Francisco Airport to Belfast Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Francisco Airport to Belfast Intl Airport.

  • What documentation or ID do you need to fly to Belfast Intl Airport?

    The travel and health documents you'll need for your trip to Belfast Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Belfast Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near Belfast?

Book flights to Belfast if you plan to visit one of these locations
Ballymena
Newry
Armagh
Cookstown
Dungannon
Portadown

Why use momondo?

Why should I use momondo to find a flight deal from San Francisco to Belfast?

It is quick and easy to find San Francisco to Belfast 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 Belfast that suits you.

Can I find flights from San Francisco to Belfast with flexible booking policies on momondo?

momondo does allow users to show only those flights to Belfast from San Francisco which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from San Francisco to Belfast?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from San Francisco to Belfast.

I’m not ready to book a flight from San Francisco to Belfast right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Belfast from San Francisco. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Belfast Intl Airport trip

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