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Cheap flights from San Francisco to Belfast from £210

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 14/4. 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

Enter your travel dates to find the best prices.
Multiple Airlines Logo
17:35 - 21:15
SFO
-
BFS
19h 40m
2 stops
Multiple Airlines Logo
12:35 - 13:50
BFS
-
SFO
33h 15m
1 stop
£637Multiple Airlines
Fri, 15 May - Fri, 29 May
Multiple Airlines Logo
17:35 - 21:15
SFO
-
BFS
19h 40m
2 stops
Multiple Airlines Logo
08:55 - 17:35
BFS
-
SFO
40h 40m
3 stops
£784Multiple Airlines
Fri, 15 May - Fri, 29 May
Multiple Airlines Logo
08:30 - 15:15
SFO
-
BFS
22h 45m
2 stops
Multiple Airlines Logo
10:05 - 12:13
BFS
-
SFO
34h 08m
3 stops
£887Multiple Airlines
Tue, 9 Jun - Mon, 15 Jun
Multiple Airlines Logo
07:10 - 19:50
SFO
-
BFS
28h 40m
3 stops
Multiple Airlines Logo
10:05 - 12:13
BFS
-
SFO
34h 08m
3 stops
£889Multiple Airlines
Tue, 9 Jun - Mon, 15 Jun
Multiple Airlines Logo
06:00 - 19:40
SFO
-
BFS
29h 40m
3 stops
Multiple Airlines Logo
17:45 - 14:30
BFS
-
SFO
28h 45m
2 stops
£933Multiple Airlines
Wed, 27 May - Wed, 5 Aug
Multiple Airlines Logo
18:20 - 18:50
SFO
-
BFS
17h 30m
2 stops
Multiple Airlines Logo
13:55 - 15:50
BFS
-
SFO
32h 55m
2 stops
£946Multiple Airlines
Sat, 21 Mar - Sat, 28 Mar
Multiple Airlines Logo
19:45 - 09:45
SFO
-
BFS
30h 00m
1 stop
Multiple Airlines Logo
15:35 - 13:50
BFS
-
SFO
30h 15m
1 stop
£959Multiple Airlines
Tue, 9 Jun - Mon, 15 Jun
Multiple Airlines Logo
06:00 - 19:15
SFO
-
BFS
29h 15m
2 stops
Multiple Airlines Logo
17:45 - 14:30
BFS
-
SFO
28h 45m
2 stops
£965Multiple Airlines
Wed, 27 May - Wed, 5 Aug
Multiple Airlines Logo
06:00 - 19:40
SFO
-
BFS
29h 40m
3 stops
Multiple Airlines Logo
07:30 - 14:30
BFS
-
SFO
39h 00m
3 stops
£968Multiple Airlines
Wed, 27 May - Wed, 5 Aug
Multiple Airlines Logo
17:35 - 21:15
SFO
-
BFS
19h 40m
2 stops
Multiple Airlines Logo
22:10 - 16:15
BFS
-
SFO
26h 05m
2 stops
£1,019Multiple Airlines
Fri, 15 May - Fri, 29 May

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 6 February 2026.
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

Fri 15/5

17:35-21:15

2 stops19h 40m

Belfast Intl

Fri 29/5

12:35-13:50

1 stop33h 15m

£637

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Fri 15/5

17:35-21:15

2 stops19h 40m

Belfast Intl

Fri 29/5

08:55-17:35

3 stops40h 40m

£784

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 9/6

08:30-15:15

2 stops22h 45m

Belfast Intl

Mon 15/6

10:05-12:13

3 stops34h 08m

£887

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 9/6

07:10-19:50

3 stops28h 40m

Belfast Intl

Mon 15/6

10:05-12:13

3 stops34h 08m

£888

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Wed 27/5

06:00-19:40

3 stops29h 40m

Belfast Intl

Wed 5/8

17:45-14:30

2 stops28h 45m

£933

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sat 21/3

18:20-18:50

2 stops17h 30m

Belfast Intl

Sat 28/3

13:55-15:50

2 stops32h 55m

£946

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 9/6

19:45-09:45

1 stop30h 00m

Belfast Intl

Mon 15/6

15:35-13:50

1 stop30h 15m

£959

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Wed 27/5

06:00-19:15

2 stops29h 15m

Belfast Intl

Wed 5/8

17:45-14:30

2 stops28h 45m

£965

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Wed 27/5

06:00-19:40

3 stops29h 40m

Belfast Intl

Wed 5/8

07:30-14:30

3 stops39h 00m

£968

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Fri 15/5

17:35-21:15

2 stops19h 40m

Belfast Intl

Fri 29/5

22:10-16:15

2 stops26h 05m

£1,019

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 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 April is, on average, the cheapest month to fly to Belfast Intl Airport from San Francisco, with most prices found around £458. 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 £479.

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

Fastest flight time

15h 05m

Direct flights

None
The fastest flight from San Francisco to Belfast Intl Airport takes 15h 05m
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.
Search flight deals

  • 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 15h 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
Portadown
Dungannon

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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