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Northern Ireland

$292+ Cheap flights from San Francisco (SFO) to Northern Ireland

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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BFS
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
1 adult, Economy
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Cheap flight deals from San Francisco to Northern Ireland

Keep the following information in mind while searching for San Francisco to Northern Ireland flight deals. Data was last updated septiembre 17, 2025.

Round-trip from

$632
(Delta)

One-way from

$292
(Kiwi.com)

Popular in

November

Cheapest in

October

Average price

$848
From San Francisco to Northern Ireland
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One-way flight from San Francisco to Northern Ireland
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Highest demand for flights based on searches. 12% potential increase in price ($128 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($45 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from San Francisco to Northern Ireland

Cheapest flights from San Francisco to Northern Ireland
Explore the most affordable flight options available from San Francisco to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 17, 2025.

This Delta deal was found by Cheapflights users on 9/16. 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.
mié. 9/241:45 pmSFO - BHD
1 stop23h 30mDelta
lun. 10/65:25 pmBHD - SFO
1 stop26h 20mDelta
Deal found 9/16$632
This American Airlines deal was found by Cheapflights users on 9/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/202:10 pmSFO - BHD
2 stops17h 30mAmerican Airlines
vie. 10/316:45 amBHD - SFO
2 stops19h 23mAmerican Airlines
Deal found 9/16$645
This Delta deal was found by Cheapflights users on 9/16. 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.
mié. 9/241:45 pmSFO - BHD
1 stop23h 30mDelta
jue. 10/26:30 amBHD - SFO
2 stops18h 48mDelta
Deal found 9/16$680
This Delta deal was found by Cheapflights users on 9/16. 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.
jue. 9/251:45 pmSFO - BHD
1 stop23h 30mDelta
mar. 10/76:30 amBHD - SFO
1 stop13h 15mDelta
Deal found 9/16$682
This Delta deal was found by Cheapflights users on 9/16. 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.
mié. 9/2410:30 amSFO - BHD
2 stops22h 25mDelta
vie. 10/36:30 amBHD - SFO
2 stops24h 59mDelta
Deal found 9/16$685
This Air France deal was found by Cheapflights users on 9/16. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/241:45 pmSFO - BHD
2 stops19h 10mMultiple Airlines
vie. 11/76:30 amBHD - SFO
1 stop13h 20mMultiple Airlines
Deal found 9/16$687
This British Airways deal was found by Cheapflights users on 9/14. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/35:30 pmSFO - BHD
1 stop15h 05mBritish Airways
dom. 12/73:10 pmBHD - SFO
1 stop35h 35mBritish Airways
Deal found 9/14$697
This Delta deal was found by Cheapflights users on 9/15. 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.
mié. 12/31:55 pmSFO - BHD
1 stop23h 05mDelta
dom. 12/76:30 amBHD - SFO
1 stop13h 20mDelta
Deal found 9/15$700
This Virgin Atlantic deal was found by Cheapflights users on 9/14. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/310:30 amSFO - BHD
2 stops26h 30mVirgin Atlantic
dom. 12/76:30 amBHD - SFO
1 stop13h 20mVirgin Atlantic
Deal found 9/14$704
This Delta deal was found by Cheapflights users on 9/16. 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.
jue. 9/2512:40 pmSFO - BHD
2 stops20h 15mDelta
lun. 10/65:25 pmBHD - SFO
1 stop26h 20mDelta
Deal found 9/16$705
This Delta deal was found by Cheapflights users on 9/14. 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.
vie. 12/52:00 pmSFO - BHD
2 stops18h 50mDelta
mar. 12/96:30 amBHD - SFO
2 stops17h 27mDelta
Deal found 9/14$714
This Mytrip deal was found by Cheapflights users on 9/15. 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.
jue. 10/308:25 pmSFO - BFS
2 stops18h 55mMultiple Airlines
jue. 11/62:25 pmBFS - SFO
2 stops34h 05mMultiple Airlines
Deal found 9/15$844

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Northern Ireland 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 septiembre 17, 2025.
Use the filters below to find and compare flights from San Francisco to Northern Ireland that are best for you.

Fly from

San Francisco

Fly to

Northern Ireland

Route

Depart

Return

Price

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

lun. 9/29

1:45 pm-4:55 pm

1 stop19h 10m

Belfast City

lun. 10/6

5:25 pm-11:45 am

1 stop26h 20m

$632

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

lun. 10/20

1:45 pm-4:55 pm

1 stop19h 10m

Belfast City

vie. 10/31

6:30 am-12:50 pm

1 stop13h 20m

$632

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

mar. 9/30

1:45 pm-9:15 pm

1 stop23h 30m

Belfast City

mar. 10/7

5:25 pm-11:45 am

1 stop26h 20m

$632

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

lun. 9/29

1:45 pm-9:15 pm

1 stop23h 30m

Belfast City

mar. 10/7

5:25 pm-11:45 am

1 stop26h 20m

$632

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

mar. 9/30

1:45 pm-9:15 pm

2 stops23h 30m

Belfast City

lun. 10/6

5:25 pm-11:45 am

1 stop26h 20m

$637

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

dom. 9/28

10:55 am-4:55 pm

2 stops22h 00m

Belfast City

mar. 10/7

6:30 am-11:45 am

1 stop13h 15m

$637

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

dom. 9/28

10:30 am-4:55 pm

2 stops22h 25m

Belfast City

lun. 10/6

5:25 pm-11:45 am

1 stop26h 20m

$637

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

lun. 10/20

2:10 pm-3:40 pm

2 stops17h 30m

Belfast City

vie. 10/31

6:45 am-7:08 pm

2 stops19h 23m

$645

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

vie. 12/5

1:55 pm-4:50 pm

1 stop18h 55m

Belfast City

mar. 12/9

5:20 pm-11:50 am

1 stop26h 30m

$682

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

jue. 10/30

8:25 pm-10:20 pm

2 stops18h 55m

Belfast Intl

jue. 11/6

2:25 pm-4:30 pm

2 stops34h 05m

$844

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 27 results
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2
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Best time to book a flight from San Francisco to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from San Francisco 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 San Francisco to Northern Ireland

What is the cheapest month to book a flight from San Francisco to Northern Ireland?

Currently, February is the cheapest month in which you can book a flight from San Francisco to Northern Ireland (average of $657). Flying from San Francisco to Northern Ireland in June is currently the most expensive (average of $1,189). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SFO to NIR?

Find hourly flight availability from San Francisco to Northern Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 17, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Francisco to Northern Ireland as you normally would.

Reviews of airlines servicing Northern Ireland

Get insights into the airlines that provide service to Northern Ireland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Northern Ireland. Reviews last updated septiembre 17, 2025.
Get a feel of what it's like to fly with American Airlines and British Airways from San Francisco to Northern Ireland by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
10,000 reviews

Comfort

7.2

Entertainment

6.9

Food

6.4

Overall

7.2

Crew

8.0

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Comfort

7.2

Entertainment

6.9

Food

6.4

Overall

7.2

Crew

8.0

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
British Airways
6.7
Okay
7,367 reviews
American Airlines
7.2
Good
10,000 reviews

Comfort

7.2

Entertainment

6.9

Food

6.4

Overall

7.2

Crew

8.0

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Northern Ireland. 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 from for flights from San Francisco to Northern Ireland?

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

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

    There are many flights that can get you from San Francisco to Northern Ireland in 19h 10m. Fly via Delta or KLM to get the fastest option. There are 5038 mi between San Francisco and Northern Ireland.

  • What are the most popular routes from San Francisco to Northern Ireland?

    The most popular flight routes from San Francisco to Northern Ireland are San Francisco - Belfast Intl, San Francisco - Belfast City and San Francisco - Campbeltown Machrihanish.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from San Francisco to Northern Ireland?

    Currently, February is the cheapest month in which you can book a flight from San Francisco to Northern Ireland (average of $657). Flying from San Francisco to Northern Ireland in June is currently the most expensive (average of $1,189). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for San Francisco to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from San Francisco to Northern Ireland

Discover the top 2 airlines that operate flights from San Francisco to Northern Ireland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$588Average$752FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$635Average$845FlexibilityNo cancel feeOn-time71%

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