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Cheap flights from San Francisco to Belfast from $270

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 4/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from San Francisco to Belfast

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
4:35 pm - 5:30 pm
SFO
-
BHD
16h 55m
1 stop
British Airways Logo
6:30 am - 1:50 pm
BHD
-
SFO
15h 20m
1 stop
$697British Airways
Mon, May 11 - Wed, Jun 3
British Airways Logo
4:35 pm - 3:30 pm
SFO
-
BHD
14h 55m
1 stop
British Airways Logo
11:35 am - 10:06 pm
BHD
-
SFO
18h 31m
2 stops
$716British Airways
Mon, May 11 - Wed, Jun 3
British Airways Logo
1:40 pm - 3:30 pm
SFO
-
BHD
17h 50m
2 stops
British Airways Logo
10:05 am - 10:06 pm
BHD
-
SFO
20h 01m
2 stops
$727British Airways
Mon, May 11 - Wed, Jun 3
British Airways Logo
4:35 pm - 3:05 pm
SFO
-
BHD
14h 30m
1 stop
British Airways Logo
6:30 am - 5:40 pm
BHD
-
SFO
19h 10m
1 stop
$794British Airways
Sat, May 16 - Thu, May 28
British Airways Logo
4:35 pm - 6:15 pm
SFO
-
BHD
17h 40m
1 stop
British Airways Logo
3:20 pm - 1:50 pm
BHD
-
SFO
30h 30m
1 stop
$802British Airways
Sat, May 16 - Mon, May 25
British Airways Logo
4:35 pm - 6:15 pm
SFO
-
BHD
17h 40m
1 stop
British Airways Logo
9:35 am - 9:01 pm
BHD
-
SFO
19h 26m
2 stops
$818British Airways
Sat, May 16 - Thu, May 28
British Airways Logo
10:13 am - 6:10 pm
SFO
-
BHD
23h 57m
2 stops
British Airways Logo
7:35 pm - 1:50 pm
BHD
-
SFO
26h 15m
1 stop
$824British Airways
Fri, May 15 - Mon, May 25
British Airways Logo
1:40 pm - 6:15 pm
SFO
-
BHD
20h 35m
2 stops
British Airways Logo
7:35 pm - 1:50 pm
BHD
-
SFO
26h 15m
1 stop
$826British Airways
Sat, May 16 - Mon, May 25
Multiple Airlines Logo
7:40 pm - 7:25 am
SFO
-
BFS
27h 45m
2 stops
Multiple Airlines Logo
6:10 am - 5:55 pm
BFS
-
SFO
19h 45m
1 stop
$889Multiple Airlines
Sun, Apr 12 - Sun, Apr 19
Multiple Airlines Logo
7:10 am - 1:15 pm
SFO
-
BFS
22h 05m
3 stops
Multiple Airlines Logo
7:30 am - 4:35 pm
BFS
-
SFO
41h 05m
3 stops
$960Multiple Airlines
Mon, May 11 - Wed, Jun 3

British Airways flights from San Francisco to Belfast

Our best British Airways deals on San Francisco to Belfast flight tickets
British Airways
May 11
SFO4:35 pmSan Francisco
16h 55m
1 stop
BHD5:30 pmBelfast City
Jun 3
BHD6:30 amBelfast City
15h 20m
1 stop
SFO1:50 pmSan Francisco
$697
British Airways
May 11
SFO4:35 pmSan Francisco
14h 55m
1 stop
BHD3:30 pmBelfast City
Jun 3
BHD11:35 amBelfast City
18h 31m
2 stops
SFO10:06 pmSan Francisco
$716
British Airways
May 11
SFO1:40 pmSan Francisco
17h 50m
2 stops
BHD3:30 pmBelfast City
Jun 3
BHD10:05 amBelfast City
20h 01m
2 stops
SFO10:06 pmSan Francisco
$727

KLM flights from San Francisco to Belfast

Our best KLM deals on San Francisco to Belfast flight tickets
KLM
Jun 2
SFO1:45 pmSan Francisco
35h 35m
1 stop
BHD9:20 amBelfast City
Jun 10
BHD9:50 amBelfast City
18h 05m
2 stops
SFO7:55 pmSan Francisco
$875
KLM
Mar 28
SFO2:55 pmSan Francisco
34h 25m
1 stop
BHD8:20 amBelfast City
Apr 4
BHD5:30 pmBelfast City
26h 15m
1 stop
SFO11:45 amSan Francisco
$913
KLM
May 28
SFO1:35 pmSan Francisco
19h 20m
2 stops
BHD4:55 pmBelfast City
Jun 4
BHD9:50 amBelfast City
33h 55m
1 stop
SFO11:45 amSan Francisco
$940

momondo Fare Finder

 
Customize your flight search to find flights from San Francisco to Belfast 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 832,500 searches. Data last updated February 28, 2026.
Use the filters below to find and compare flights from San Francisco to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 5/11

4:35 pm-5:30 pm

1 stop16h 55m

Belfast City

Wed 6/3

6:30 am-1:50 pm

1 stop15h 20m

$697

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 5/11

4:35 pm-3:30 pm

1 stop14h 55m

Belfast City

Wed 6/3

11:35 am-10:06 pm

2 stops18h 31m

$716

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 5/11

1:40 pm-3:30 pm

2 stops17h 50m

Belfast City

Wed 6/3

10:05 am-10:06 pm

2 stops20h 01m

$727

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sat 5/16

4:35 pm-3:05 pm

1 stop14h 30m

Belfast City

Thu 5/28

6:30 am-5:40 pm

1 stop19h 10m

$794

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sat 5/16

4:35 pm-6:15 pm

1 stop17h 40m

Belfast City

Mon 5/25

3:20 pm-1:50 pm

1 stop30h 30m

$802

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sat 5/16

4:35 pm-6:15 pm

1 stop17h 40m

Belfast City

Thu 5/28

9:35 am-9:01 pm

2 stops19h 26m

$818

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Fri 5/15

10:13 am-6:10 pm

2 stops23h 57m

Belfast City

Mon 5/25

7:35 pm-1:50 pm

1 stop26h 15m

$824

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sat 5/16

1:40 pm-6:15 pm

2 stops20h 35m

Belfast City

Mon 5/25

7:35 pm-1:50 pm

1 stop26h 15m

$826

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sun 4/12

7:40 pm-7:25 am

2 stops27h 45m

Belfast Intl

Sun 4/19

6:10 am-5:55 pm

1 stop19h 45m

$889

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Mon 5/11

7:10 am-1:15 pm

3 stops22h 05m

Belfast Intl

Wed 6/3

7:30 am-4:35 pm

3 stops41h 05m

$960

Flights are sorted by cheapest round-trip 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

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?

In general, October is the cheapest month to fly from San Francisco to Belfast. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $651. If you don’t want to visit Belfast in October, then you should wait until September to fly from San Francisco, when ticket prices are also cheap, with an average price of $663.

Cheap San Francisco to Belfast flight deals and tips

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

Fastest flight time

15h 05m

Direct flights

None
The fastest flight from San Francisco to Belfast takes 15h 05m
There are no direct flights from San Francisco to Belfast. There are no popular flight routes from San Francisco to Belfast.
Search flight deals

  • How far is San Francisco to Belfast by plane?

    The straight-line distance from San Francisco to Belfast is 5028.1 mi. By plane, this route typically takes 15h 05m.

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

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

  • How many operators does momondo search for flights from San Francisco Airport to Belfast?

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

    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.

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

    The required travel and health documents for your Belfast trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Belfast. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from San Francisco to Belfast

Compare and see reviews for airlines that fly from San Francisco to Belfast with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $586Free CancellationRating
6.7
7,772 reviews
Search British Airways flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from San Francisco to Belfast. Millions of users trust and use momondo every year so you are in good hands.

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?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Belfast from San Francisco.

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

Of course. momondo tracks the price of San Francisco to Belfast flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in Belfast

Airports listed have a maximum distance of 12.2 mi from Belfast
Belfast Intl Airport
Belfast City Airport