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Cheap flights from Northern Ireland to San Francisco from $494

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Northern Ireland to San Francisco departing on 11/29. 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 Northern Ireland to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:10 am - 6:00 pmBFS  Belfast Intl-SFO San Francisco
19h 50m2 stops London Gatwick Paris Charles de Gaulle
Multiple Airlines Logo
3:05 pm - 8:25 pmSFO  San Francisco-BFS Belfast Intl
21h 20m2 stops Paris Charles de Gaulle London Gatwick
$825Multiple Airlines
Mon, Sep 28 - Mon, Oct 5
British Airways Logo
6:35 am - 2:55 pmBHD  Belfast City-SFO San Francisco
16h 20m1 stop London Heathrow
British Airways Logo
9:12 am - 10:55 amSFO  San Francisco-BHD Belfast City
17h 43m2 stops Chicago O'Hare Intl London Heathrow
$867British Airways
Sat, Jan 30 - Thu, Feb 4
British Airways Logo
6:30 am - 1:50 pmBHD  Belfast City-SFO San Francisco
15h 20m1 stop London Heathrow
British Airways Logo
7:30 pm - 7:25 pmSFO  San Francisco-BHD Belfast City
15h 55m1 stop London Heathrow
$875British Airways
Thu, Sep 3 - Mon, Sep 7
British Airways Logo
11:45 am - 10:34 pmBHD  Belfast City-SFO San Francisco
18h 49m2 stops London Heathrow Dallas/Fort Worth
British Airways Logo
10:29 am - 10:55 amSFO  San Francisco-BHD Belfast City
16h 26m2 stops New York John F Kennedy Intl London Heathrow
$879British Airways
Sat, Jan 30 - Thu, Feb 4
British Airways Logo
9:35 am - 8:23 pmBHD  Belfast City-SFO San Francisco
18h 48m2 stops London Heathrow Dallas/Fort Worth
British Airways Logo
7:30 pm - 5:30 pmSFO  San Francisco-BHD Belfast City
14h 00m1 stop London Heathrow
$898British Airways
Thu, Sep 3 - Mon, Sep 7
British Airways Logo
6:30 am - 7:27 pmBHD  Belfast City-SFO San Francisco
20h 57m2 stops London Heathrow Los Angeles
British Airways Logo
4:31 pm - 6:45 pmSFO  San Francisco-BHD Belfast City
18h 14m2 stops Los Angeles London Heathrow
$911British Airways
Thu, Sep 3 - Mon, Sep 7
British Airways Logo
6:30 am - 6:45 pmBHD  Belfast City-SFO San Francisco
20h 15m1 stop London Heathrow
British Airways Logo
12:00 pm - 4:50 pmSFO  San Francisco-BHD Belfast City
20h 50m2 stops Los Angeles London Heathrow
$925British Airways
Thu, Nov 5 - Sun, Nov 8
British Airways Logo
6:30 am - 2:55 pmBHD  Belfast City-SFO San Francisco
16h 25m1 stop London Heathrow
British Airways Logo
8:35 pm - 6:50 pmSFO  San Francisco-BHD Belfast City
14h 15m1 stop London Heathrow
$926British Airways
Thu, Nov 5 - Sun, Nov 8
British Airways Logo
7:40 am - 2:55 pmBHD  Belfast City-SFO San Francisco
15h 15m1 stop London Heathrow
British Airways Logo
12:00 pm - 4:50 pmSFO  San Francisco-BHD Belfast City
20h 50m2 stops Los Angeles London Heathrow
$927British Airways
Thu, Nov 5 - Sun, Nov 8
British Airways Logo
6:30 am - 6:45 pmBHD  Belfast City-SFO San Francisco
20h 15m1 stop London Heathrow
British Airways Logo
12:00 pm - 4:50 pmSFO  San Francisco-BHD Belfast City
20h 50m2 stops Los Angeles London Heathrow
$928British Airways
Thu, Nov 5 - Sun, Nov 8

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British Airways flights from Northern Ireland to San Francisco

Our best British Airways deals on Northern Ireland to San Francisco flight tickets
British Airways
Jan 30
BHD6:35 amBelfast City
16h 20m
1 stop
SFO2:55 pmSan Francisco
Feb 4
SFO5:25 pmSan Francisco
17h 20m
1 stop
BHD6:45 pmBelfast City
$867
British Airways
Sep 3
BHD6:30 amBelfast City
15h 20m
1 stop
SFO1:50 pmSan Francisco
Sep 7
SFO7:30 pmSan Francisco
15h 55m
1 stop
BHD7:25 pmBelfast City
$875
British Airways
Jan 30
BHD11:45 amBelfast City
18h 49m
2 stops
SFO10:34 pmSan Francisco
Feb 4
SFO10:29 amSan Francisco
16h 26m
2 stops
BHD10:55 amBelfast City
$879

momondo Fare Finder

 
Customize your flight search to find flights from Northern Ireland 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 August 16, 2026.
Use the filters below to find and compare flights from Northern Ireland to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Mon 9/28

6:10 am-6:00 pm

2 stops19h 50m

San Francisco

Mon 10/5

3:05 pm-8:25 pm

2 stops21h 20m

$825

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Sat 1/30

6:35 am-2:55 pm

1 stop16h 20m

San Francisco

Thu 2/4

9:12 am-10:55 am

2 stops17h 43m

$867

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Thu 9/3

6:30 am-1:50 pm

1 stop15h 20m

San Francisco

Mon 9/7

7:30 pm-7:25 pm

1 stop15h 55m

$875

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Sat 1/30

11:45 am-10:34 pm

2 stops18h 49m

San Francisco

Thu 2/4

10:29 am-10:55 am

2 stops16h 26m

$879

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Thu 9/3

9:35 am-8:23 pm

2 stops18h 48m

San Francisco

Mon 9/7

7:30 pm-5:30 pm

1 stop14h 00m

$898

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Thu 9/3

6:30 am-7:27 pm

2 stops20h 57m

San Francisco

Mon 9/7

4:31 pm-6:45 pm

2 stops18h 14m

$911

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Thu 11/5

6:30 am-6:45 pm

1 stop20h 15m

San Francisco

Sun 11/8

12:00 pm-4:50 pm

2 stops20h 50m

$925
Quickest round-trip

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Thu 11/5

6:30 am-2:55 pm

1 stop16h 25m

San Francisco

Sun 11/8

8:35 pm-6:50 pm

1 stop14h 15m

$926

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Thu 11/5

7:40 am-2:55 pm

1 stop15h 15m

San Francisco

Sun 11/8

12:00 pm-4:50 pm

2 stops20h 50m

$927

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Thu 11/5

6:30 am-6:45 pm

1 stop20h 15m

San Francisco

Sun 11/8

12:00 pm-4:50 pm

2 stops20h 50m

$928

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 Northern Ireland 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.

Can stopping save me money on Northern Ireland to San Francisco flights?

You could potentially save up to 25% on your flight if you consider stops on a Northern Ireland to San Francisco flight.

Cheap Northern Ireland to San Francisco flight deals and tips

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

Fastest flight time

16h 20m

Direct flights

None
The fastest flight from Northern Ireland to San Francisco takes 16h 20m
There are no direct flights from Northern Ireland to San Francisco. There are no popular flight routes from Northern Ireland to San Francisco.
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Frequently asked questions about flying from Northern Ireland to San Francisco

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

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

  • How old do you have to be to fly from Northern Ireland to San Francisco 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 Northern Ireland to San Francisco Airport.

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

    The travel and health documents you'll need for your trip to San Francisco 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 San Francisco Airport. It is always advisable to seek advice from your airline or a trusted 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
Berkeley
Bodega Bay
Hayward
Walnut Creek
Santa Clara
Vallejo
Roseville
Sonoma
Salinas
Sunnyvale
Milpitas
Daly City
Burlingame
Marina
Palo Alto

Why use momondo?

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

Finding the right flight to San Francisco from Northern Ireland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Francisco quick and easy, saving you time and money.

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

Yes. All flights to San Francisco from Northern Ireland on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

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 San Francisco from Northern Ireland.

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

Yes. momondo can track prices for Northern Ireland to San Francisco flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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