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Cheap flights from San Francisco to Belfast from £620

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Belfast departing on 25/11. 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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Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
08:25 - 21:40SFO-BFS
29h 15m2 stops
Multiple Airlines Logo
17:30 - 12:40BFS-SFO
27h 10m2 stops
£620Multiple Airlines
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Tue, 25 Nov - Tue, 2 Dec
Multiple Airlines Logo
12:10 - 08:20SFO-BFS
36h 10m2 stops
Multiple Airlines Logo
17:30 - 20:10BFS-SFO
34h 40m1 stop
£682Multiple Airlines
Find Deal
Tue, 25 Nov - Tue, 2 Dec
Multiple Airlines Logo
10:15 - 21:40SFO-BFS
27h 25m3 stops
Multiple Airlines Logo
20:55 - 20:10BFS-SFO
31h 15m2 stops
£688Multiple Airlines
Find Deal
Tue, 25 Nov - Tue, 2 Dec
Multiple Airlines Logo
12:10 - 21:40SFO-BFS
25h 30m1 stop
Multiple Airlines Logo
17:30 - 20:10BFS-SFO
34h 40m1 stop
£719Multiple Airlines
Find Deal
Tue, 25 Nov - Tue, 2 Dec
Multiple Airlines Logo
10:15 - 21:40SFO-BFS
27h 25m3 stops
Multiple Airlines Logo
09:25 - 20:10BFS-SFO
42h 45m3 stops
£732Multiple Airlines
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Tue, 25 Nov - Tue, 2 Dec
Multiple Airlines Logo
17:20 - 22:35SFO-BFS
21h 15m2 stops
Multiple Airlines Logo
06:30 - 15:35BFS-SFO
17h 05m2 stops
£1,110Multiple Airlines
Find Deal
Tue, 16 Dec - Tue, 30 Dec
Multiple Airlines Logo
06:28 - 10:05SFO-BFS
19h 37m2 stops
Multiple Airlines Logo
17:30 - 20:10BFS-SFO
34h 40m1 stop
£1,204Multiple Airlines
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Tue, 16 Dec - Tue, 30 Dec
Multiple Airlines Logo
13:00 - 08:25SFO-BFS
35h 25m2 stops
Multiple Airlines Logo
06:30 - 20:10BFS-SFO
21h 40m1 stop
£1,502Multiple Airlines
Find Deal
Fri, 21 Nov - Sun, 30 Nov
Multiple Airlines Logo
17:30 - 21:30SFO-BFS
20h 00m1 stop
Multiple Airlines Logo
06:00 - 18:45BFS-SFO
20h 45m1 stop
£1,587Multiple Airlines
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Tue, 16 Dec - Tue, 30 Dec
Multiple Airlines Logo
17:20 - 22:00SFO-BFS
20h 40m2 stops
Multiple Airlines Logo
06:30 - 10:54BFS-SFO
36h 24m3 stops
£1,789Multiple Airlines
Find Deal
Fri, 21 Nov - Sun, 30 Nov

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 31 October 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

Tue 25/11

08:25-21:40

2 stops29h 15m

Belfast Intl

Tue 2/12

17:30-12:40

2 stops27h 10m

£620

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 25/11

12:10-08:20

2 stops36h 10m

Belfast Intl

Tue 2/12

17:30-20:10

1 stop34h 40m

£682

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 25/11

10:15-21:40

3 stops27h 25m

Belfast Intl

Tue 2/12

20:55-20:10

2 stops31h 15m

£688

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 25/11

12:10-21:40

1 stop25h 30m

Belfast Intl

Tue 2/12

17:30-20:10

1 stop34h 40m

£719

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 25/11

10:15-21:40

3 stops27h 25m

Belfast Intl

Tue 2/12

09:25-20:10

3 stops42h 45m

£732

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 16/12

17:20-22:35

2 stops21h 15m

Belfast Intl

Tue 30/12

06:30-15:35

2 stops17h 05m

£1,110

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 16/12

06:28-10:05

2 stops19h 37m

Belfast Intl

Tue 30/12

17:30-20:10

1 stop34h 40m

£1,204

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Fri 21/11

13:00-08:25

2 stops35h 25m

Belfast Intl

Sun 30/11

06:30-20:10

1 stop21h 40m

£1,502

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 16/12

17:30-21:30

1 stop20h 00m

Belfast Intl

Tue 30/12

06:00-18:45

1 stop20h 45m

£1,587

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Fri 21/11

17:20-22:00

2 stops20h 40m

Belfast Intl

Sun 30/11

06:30-10:54

3 stops36h 24m

£1,789

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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 April is, on average, the cheapest month to fly to Belfast Intl Airport from San Francisco, with most prices found around £472. If you’re not able to fly to Belfast Intl Airport in April, then October is your next best option. Flight prices from San Francisco to Belfast Intl Airport during October average around £494.

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

Direct flights

None
There are no direct flights from San Francisco to Belfast Intl Airport. There are no popular flight routes from San Francisco to 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 19h 10m, 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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