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Cheap flights from Northern Ireland to San Francisco from $429

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 9/7. 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.
British Airways Logo
6:45 am - 2:55 pm
BHD
-
SFO
16h 10m
1 stop
British Airways Logo
2:12 pm - 4:40 pm
SFO
-
BHD
18h 28m
2 stops
$816British Airways
Fri, Nov 13 - Thu, Nov 26
British Airways Logo
8:45 am - 6:35 pm
BHD
-
SFO
17h 50m
1 stop
British Airways Logo
5:25 pm - 6:50 pm
SFO
-
BHD
17h 25m
1 stop
$818British Airways
Fri, Nov 13 - Thu, Nov 26
British Airways Logo
1:45 pm - 12:43 am
BHD
-
SFO
18h 58m
2 stops
British Airways Logo
9:12 am - 10:20 am
SFO
-
BHD
17h 08m
2 stops
$824British Airways
Fri, Nov 13 - Thu, Nov 26
KLM Logo
5:30 pm - 11:45 am
BHD
-
SFO
26h 15m
1 stop
KLM Logo
3:16 pm - 4:55 pm
SFO
-
BHD
17h 39m
2 stops
$855KLM
Fri, Sep 4 - Sat, Sep 19
British Airways Logo
8:45 am - 8:14 pm
BHD
-
SFO
19h 29m
2 stops
British Airways Logo
11:24 am - 2:00 pm
SFO
-
BHD
18h 36m
2 stops
$859British Airways
Fri, Nov 13 - Thu, Nov 26
KLM Logo
9:50 am - 12:36 am
BHD
-
SFO
22h 46m
2 stops
KLM Logo
3:16 pm - 4:55 pm
SFO
-
BHD
17h 39m
2 stops
$860KLM
Fri, Sep 4 - Sat, Sep 19
American Airlines Logo
6:30 am - 1:50 pm
BHD
-
SFO
15h 20m
1 stop
American Airlines Logo
10:31 am - 3:30 pm
SFO
-
BHD
20h 59m
2 stops
$889American Airlines
Fri, Sep 4 - Fri, Sep 18
American Airlines Logo
6:30 am - 1:50 pm
BHD
-
SFO
15h 20m
1 stop
American Airlines Logo
4:35 pm - 3:05 pm
SFO
-
BHD
14h 30m
1 stop
$890American Airlines
Fri, Sep 4 - Sat, Sep 19
Multiple Airlines Logo
9:10 pm - 4:15 pm
BFS
-
SFO
27h 05m
2 stops
Multiple Airlines Logo
7:35 pm - 10:25 pm
SFO
-
BFS
18h 50m
2 stops
$933Multiple Airlines
Thu, Aug 20 - Mon, Aug 24
Multiple Airlines Logo
1:45 pm - 2:40 pm
BFS
-
SFO
32h 55m
2 stops
Multiple Airlines Logo
4:45 pm - 9:30 pm
SFO
-
BFS
20h 45m
2 stops
$1,021Multiple Airlines
Thu, Aug 20 - Sat, Aug 29

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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
Nov 13
BHD6:45 amBelfast City
16h 10m
1 stop
SFO2:55 pmSan Francisco
Nov 26
SFO2:12 pmSan Francisco
18h 28m
2 stops
BHD4:40 pmBelfast City
$816
British Airways
Nov 13
BHD8:45 amBelfast City
17h 50m
1 stop
SFO6:35 pmSan Francisco
Nov 26
SFO5:25 pmSan Francisco
17h 25m
1 stop
BHD6:50 pmBelfast City
$818
British Airways
Nov 13
BHD1:45 pmBelfast City
18h 58m
2 stops
SFO12:43 amSan Francisco
Nov 26
SFO9:12 amSan Francisco
17h 08m
2 stops
BHD10:20 amBelfast City
$824

KLM flights from Northern Ireland to San Francisco

Our best KLM deals on Northern Ireland to San Francisco flight tickets
KLM
Sep 4
BHD5:30 pmBelfast City
26h 15m
1 stop
SFO11:45 amSan Francisco
Sep 19
SFO3:16 pmSan Francisco
17h 39m
2 stops
BHD4:55 pmBelfast City
$855
KLM
Sep 4
BHD9:50 amBelfast City
22h 46m
2 stops
SFO12:36 amSan Francisco
Sep 19
SFO3:16 pmSan Francisco
17h 39m
2 stops
BHD4:55 pmBelfast City
$860
KLM
Jul 28
BHD9:50 amBelfast City
32h 25m
2 stops
SFO10:15 amSan Francisco
Aug 4
SFO1:45 pmSan Francisco
19h 10m
1 stop
BHD4:55 pmBelfast City
$989

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 July 4, 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

BHD - SFO

BHDSFO

Belfast City

Fri 11/13

6:45 am-2:55 pm

1 stop16h 10m

San Francisco

Thu 11/26

2:12 pm-4:40 pm

2 stops18h 28m

$816

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 11/13

8:45 am-6:35 pm

1 stop17h 50m

San Francisco

Thu 11/26

5:25 pm-6:50 pm

1 stop17h 25m

$818

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 11/13

1:45 pm-12:43 am

2 stops18h 58m

San Francisco

Thu 11/26

9:12 am-10:20 am

2 stops17h 08m

$824

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 9/4

5:30 pm-11:45 am

1 stop26h 15m

San Francisco

Sat 9/19

3:16 pm-4:55 pm

2 stops17h 39m

$855

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 11/13

8:45 am-8:14 pm

2 stops19h 29m

San Francisco

Thu 11/26

11:24 am-2:00 pm

2 stops18h 36m

$859

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 9/4

9:50 am-12:36 am

2 stops22h 46m

San Francisco

Sat 9/19

3:16 pm-4:55 pm

2 stops17h 39m

$860

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 9/4

6:30 am-1:50 pm

1 stop15h 20m

San Francisco

Fri 9/18

10:31 am-3:30 pm

2 stops20h 59m

$889
Quickest round-trip

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 9/4

6:30 am-1:50 pm

1 stop15h 20m

San Francisco

Sat 9/19

4:35 pm-3:05 pm

1 stop14h 30m

$890

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Thu 8/20

9:10 pm-4:15 pm

2 stops27h 05m

San Francisco

Mon 8/24

7:35 pm-10:25 pm

2 stops18h 50m

$933

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Thu 8/20

1:45 pm-2:40 pm

2 stops32h 55m

San Francisco

Sat 8/29

4:45 pm-9:30 pm

2 stops20h 45m

$1,021

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

17h 50m

Direct flights

None
The fastest flight from Northern Ireland to San Francisco takes 17h 50m
There are no direct flights from Northern Ireland to San Francisco. There are no popular flight routes from Northern Ireland to San Francisco.
Search flight deals

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
Bodega Bay
South San Francisco
Sonoma
Fremont
Hayward
Roseville
Walnut Creek
Santa Clara
Berkeley
Vallejo
Salinas
Sunnyvale
Big Sur
Burlingame
Daly City
Milpitas
Turlock

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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