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$643+ Cheap flights from Northern Ireland to San Francisco (SFO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — SFO
Nov 20 — Nov 271
Thu 11/20
Thu 11/27
1 adult, Economy
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Find flight deals from Northern Ireland to San Francisco

Cheapest flights from Northern Ireland to San Francisco
Explore the most affordable flight options available from Northern Ireland to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 21, 2025.

This Trip.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:00 amBFS - SFO
1 stop19h 00mMultiple Airlines
Wed 11/2612:50 pmSFO - BFS
1 stop19h 05mMultiple Airlines
Deal found 10/20$758
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/186:30 amBHD - SFO
1 stop13h 20mDelta
Tue 11/251:55 pmSFO - BHD
1 stop18h 55mDelta
Deal found 10/21$763
This Delta deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:30 amBHD - SFO
1 stop13h 20mDelta
Wed 11/2610:39 amSFO - BHD
2 stops26h 21mDelta
Deal found 10/20$764
This Delta deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:30 amBHD - SFO
1 stop13h 20mDelta
Thu 12/117:00 amSFO - BHD
2 stops25h 50mDelta
Deal found 10/20$804
This Mytrip deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/186:30 amBFS - SFO
2 stops17h 05mMultiple Airlines
Tue 11/255:20 pmSFO - BFS
2 stops18h 55mMultiple Airlines
Deal found 10/21$842
This Cheapflightsfares deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/237:25 pmBHD - SFO
2 stops32h 19mBritish Airways
Thu 1/88:40 pmSFO - BHD
1 stop15h 50mBritish Airways
Deal found 10/19$875
This Expedia deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/235:15 pmBHD - SFO
1 stop29h 45mMultiple Airlines
Thu 1/85:30 pmSFO - BHD
1 stop15h 10mMultiple Airlines
Deal found 10/19$893
This Mytrip deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/232:15 pmBFS - SFO
2 stops34h 15mMultiple Airlines
Thu 1/87:25 pmSFO - BFS
2 stops18h 55mMultiple Airlines
Deal found 10/19$894
This Mytrip deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/35:00 pmBFS - SFO
2 stops26h 50mMultiple Airlines
Wed 12/101:55 pmSFO - BFS
2 stops18h 20mMultiple Airlines
Deal found 10/19$956
This Mytrip deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/185:20 pmBHD - SFO
3 stops29h 10mMultiple Airlines
Tue 11/258:25 amSFO - BHD
2 stops23h 50mMultiple Airlines
Deal found 10/21$1,089
This Mytrip deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1910:15 amBHD - SFO
2 stops35h 15mMultiple Airlines
Wed 11/2611:20 amSFO - BHD
3 stops24h 00mMultiple Airlines
Deal found 10/20$1,123

Cheap flight deals from Northern Ireland to San Francisco

Keep the following information in mind while searching for Northern Ireland to San Francisco flight deals. Data was last updated October 21, 2025.

Round-trip from

$758
(Trip.com)

One-way from

$643

Popular in

July

Cheapest in

January

Average price

$843
From Northern Ireland to San Francisco
Search Deals
One-way flight from Northern Ireland to San Francisco
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($117 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated October 21, 2025.
Use the filters below to find and compare flights from Northern Ireland to San Francisco that are best for you.

Fly from

Northern Ireland

Fly to

San Francisco

Route

Depart

Return

Price

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Tue 11/18

6:30 am-11:50 am

1 stop13h 20m

San Francisco

Tue 11/25

1:55 pm-4:50 pm

1 stop18h 55m

$763

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Tue 11/18

5:20 pm-11:50 am

1 stop26h 30m

San Francisco

Tue 11/25

1:55 pm-4:50 pm

1 stop18h 55m

$763

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 11/19

6:30 am-11:50 am

1 stop13h 20m

San Francisco

Wed 11/26

1:55 pm-9:00 pm

1 stop23h 05m

$764

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 11/19

6:30 am-11:50 am

1 stop13h 20m

San Francisco

Wed 11/26

10:39 am-9:00 pm

2 stops26h 21m

$764

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 12/4

6:30 am-11:50 am

1 stop13h 20m

San Francisco

Thu 12/11

1:55 pm-4:50 pm

1 stop18h 55m

$804

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 12/4

6:30 am-11:50 am

1 stop13h 20m

San Francisco

Thu 12/11

7:00 am-4:50 pm

2 stops25h 50m

$804

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 3/5

11:05 am-6:45 pm

1 stop15h 40m

San Francisco

Mon 3/9

10:24 am-2:15 pm

2 stops20h 51m

$806

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Tue 11/18

6:30 am-3:35 pm

2 stops17h 05m

San Francisco

Tue 11/25

5:20 pm-8:15 pm

2 stops18h 55m

$842

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Tue 12/23

2:15 pm-4:30 pm

2 stops34h 15m

San Francisco

Thu 1/8

7:25 pm-10:20 pm

2 stops18h 55m

$894

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Wed 11/19

8:20 am-8:10 pm

2 stops19h 50m

San Francisco

Wed 11/26

4:30 pm-3:55 pm

1 stop15h 25m

$1,070

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

Showing 1-10 of 12 results
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Best time to book a flight from Northern Ireland to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Northern Ireland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Northern Ireland to San Francisco

How much does it cost to fly round-trip from Northern Ireland to San Francisco?

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Francisco from Northern Ireland?

    Most people fly into San Francisco (SFO) if they book a flight to San Francisco from Northern Ireland. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

  • How long is the flight from Northern Ireland to San Francisco?

    Delta and KLM can get you from Northern Ireland to San Francisco in just under 13h 20m. Your travel time can differ by up to . Northern Ireland and San Francisco are separated by a distance of 5038 mi.

  • Can I find deals for flights from Northern Ireland to San Francisco that include hotel bookings?

    Yes. In addition to deals on Northern Ireland to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Northern Ireland to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Northern Ireland to San Francisco.

  • Can I find deals for business class flights from Northern Ireland to San Francisco?

    Yes. Cheapflights offers flight deals from Northern Ireland to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
Santa Cruz
Livermore
South San Francisco
Turlock
Antioch
Watsonville
Santa Clara
Manteca
Sunnyvale
Vacaville
Vallejo
Hollister
Foster City
Union City
Fairfield
Burlingame
Redwood City
Lodi
San Mateo

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