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Cheap flights from Belfast to San Francisco from $386

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Belfast to San Francisco departing on 9/23. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Belfast to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:30 pm - 2:30 pm
BFS
-
SFO
48h 00m
3 stops
Multiple Airlines Logo
6:00 am - 4:20 pm
SFO
-
BFS
26h 20m
3 stops
$876Multiple Airlines
Tue, Sep 1 - Tue, Sep 8
British Airways Logo
7:40 am - 2:55 pm
BHD
-
SFO
15h 15m
1 stop
British Airways Logo
1:10 pm - 4:05 pm
SFO
-
BHD
18h 55m
2 stops
$906British Airways
Thu, Nov 19 - Mon, Nov 23
Multiple Airlines Logo
10:45 pm - 9:55 pm
BFS
-
SFO
31h 10m
3 stops
Multiple Airlines Logo
6:00 am - 9:35 pm
SFO
-
BFS
31h 35m
3 stops
$910Multiple Airlines
Tue, Aug 18 - Mon, Aug 24
British Airways Logo
7:40 am - 6:31 pm
BHD
-
SFO
18h 51m
2 stops
British Airways Logo
7:50 am - 10:40 am
SFO
-
BHD
18h 50m
2 stops
$912British Airways
Thu, Nov 19 - Mon, Nov 23
Multiple Airlines Logo
10:30 pm - 2:30 pm
BFS
-
SFO
48h 00m
3 stops
Multiple Airlines Logo
8:30 am - 3:15 pm
SFO
-
BFS
22h 45m
2 stops
$960Multiple Airlines
Tue, Sep 1 - Tue, Sep 8
Multiple Airlines Logo
10:45 pm - 9:02 pm
BFS
-
SFO
30h 17m
2 stops
Multiple Airlines Logo
6:00 am - 9:35 pm
SFO
-
BFS
31h 35m
3 stops
$1,010Multiple Airlines
Tue, Aug 18 - Mon, Aug 24
Multiple Airlines Logo
8:35 pm - 12:00 pm
BFS
-
SFO
47h 25m
3 stops
Multiple Airlines Logo
11:10 am - 11:15 am
SFO
-
BFS
16h 05m
2 stops
$1,046Multiple Airlines
Mon, Aug 24 - Mon, Aug 31
Multiple Airlines Logo
9:50 pm - 9:02 pm
BFS
-
SFO
31h 12m
2 stops
Multiple Airlines Logo
3:05 pm - 8:40 pm
SFO
-
BFS
21h 35m
2 stops
$1,066Multiple Airlines
Mon, Aug 24 - Mon, Aug 31
Virgin Atlantic Logo
5:30 pm - 11:45 am
BHD
-
SFO
26h 15m
1 stop
Virgin Atlantic Logo
1:45 pm - 4:55 pm
SFO
-
BHD
19h 10m
1 stop
$1,086Virgin Atlantic
Sun, Aug 16 - Sun, Aug 23
Delta Logo
9:50 am - 11:57 pm
BHD
-
SFO
22h 07m
2 stops
Delta Logo
9:41 am - 4:55 pm
SFO
-
BHD
23h 14m
2 stops
$1,091Delta
Sun, Aug 16 - Sun, Aug 23

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British Airways flights from Belfast to San Francisco

Our best British Airways deals on Belfast to San Francisco flight tickets
British Airways
Nov 19
BHD7:40 amBelfast City
15h 15m
1 stop
SFO2:55 pmSan Francisco
Nov 23
SFO1:10 pmSan Francisco
18h 55m
2 stops
BHD4:05 pmBelfast City
$906
British Airways
Nov 19
BHD7:40 amBelfast City
18h 51m
2 stops
SFO6:31 pmSan Francisco
Nov 23
SFO7:50 amSan Francisco
18h 50m
2 stops
BHD10:40 amBelfast City
$912

Delta flights from Belfast to San Francisco

Our best Delta deals on Belfast to San Francisco flight tickets
Delta
Aug 16
BHD5:30 pmBelfast City
26h 15m
1 stop
SFO11:45 amSan Francisco
Aug 23
SFO6:13 amSan Francisco
19h 07m
2 stops
BHD9:20 amBelfast City
$1,086
Delta
Aug 16
BHD9:50 amBelfast City
22h 07m
2 stops
SFO11:57 pmSan Francisco
Aug 23
SFO9:41 amSan Francisco
23h 14m
2 stops
BHD4:55 pmBelfast City
$1,091

momondo Fare Finder

 
Customize your flight search to find flights from Belfast to San Francisco 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 July 21, 2026.
Use the filters below to find and compare flights from Belfast to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Tue 9/1

10:30 pm-2:30 pm

3 stops48h 00m

San Francisco

Tue 9/8

6:00 am-4:20 pm

3 stops26h 20m

$876
Quickest round-trip

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 11/19

7:40 am-2:55 pm

1 stop15h 15m

San Francisco

Mon 11/23

1:10 pm-4:05 pm

2 stops18h 55m

$906

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Tue 8/18

10:45 pm-9:55 pm

3 stops31h 10m

San Francisco

Mon 8/24

6:00 am-9:35 pm

3 stops31h 35m

$910

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 11/19

7:40 am-6:31 pm

2 stops18h 51m

San Francisco

Mon 11/23

7:50 am-10:40 am

2 stops18h 50m

$912

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Tue 9/1

10:30 pm-2:30 pm

3 stops48h 00m

San Francisco

Tue 9/8

8:30 am-3:15 pm

2 stops22h 45m

$960

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Tue 8/18

10:45 pm-9:02 pm

2 stops30h 17m

San Francisco

Mon 8/24

6:00 am-9:35 pm

3 stops31h 35m

$1,010

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Mon 8/24

8:35 pm-12:00 pm

3 stops47h 25m

San Francisco

Mon 8/31

11:10 am-11:15 am

2 stops16h 05m

$1,046

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Mon 8/24

9:50 pm-9:02 pm

2 stops31h 12m

San Francisco

Mon 8/31

3:05 pm-8:40 pm

2 stops21h 35m

$1,066

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Sun 8/16

5:30 pm-11:45 am

1 stop26h 15m

San Francisco

Sun 8/23

1:45 pm-4:55 pm

1 stop19h 10m

$1,086

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Sun 8/16

9:50 am-11:57 pm

2 stops22h 07m

San Francisco

Sun 8/23

9:41 am-4:55 pm

2 stops23h 14m

$1,091

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 San Francisco from

How to get the cheapest flight ticket from Belfast to San Francisco

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 San Francisco?

If you aren’t able to travel to San Francisco during the month of November, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $0.

Cheap Belfast to San Francisco flight deals and tips

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

Fastest flight time

15h 15m

Direct flights

None
The fastest flight from Belfast to San Francisco takes 15h 15m
There are no direct flights from Belfast to San Francisco. There are no popular flight routes from Belfast to San Francisco.
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Frequently asked questions about flying from Belfast to San Francisco

  • How far is Belfast to San Francisco by plane?

    The straight-line distance from Belfast to San Francisco is 5028.4 mi. 15h 15m is a normal flight duration for this route.

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

    Prices for flights from Belfast to San Francisco Airport are updated daily.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Belfast to San Francisco Airport.

  • What documentation or ID do you need to fly to San Francisco Airport?

    The required travel and health documents for your San Francisco Airport 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 San Francisco Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Carmel-by-the-Sea
Modesto
South San Francisco
Fremont
Hayward
Walnut Creek
Bodega Bay
Sonoma
Roseville
Santa Clara
Berkeley
Vallejo
Salinas
Sunnyvale
Burlingame
Daly City
Milpitas
Palo Alto
Big Sur

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Belfast to San Francisco. momondo saves you time and could save you money on your trip.

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

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

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

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 Belfast to San Francisco.

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

If you are simply researching potential flights to San Francisco, momondo offers a useful price alert feature which will track prices for flights to San Francisco from Belfast and alert you when they change.

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