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Northern Ireland

$176+ 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 2/8. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BFS
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
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 January 8, 2026.

Round-trip from

$627
(British Airways)

One-way from

$176
(oojo)

Popular in

June

Cheapest in

April

Average price

$745
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. 13% potential increase in price ($135 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 8, 2026.

This British Airways deal was found by Cheapflights users on 1/7. 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.
Wed 3/48:40 pmSFO - BHD
1 stop14h 30mBritish Airways
Sun 3/86:30 amBHD - SFO
1 stop20h 15mBritish Airways
Deal found 1/7$627
This British Airways deal was found by Cheapflights users on 1/6. 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.
Fri 2/272:27 pmSFO - BHD
2 stops20h 48mBritish Airways
Tue 3/38:45 amBHD - SFO
1 stop14h 15mBritish Airways
Deal found 1/6$631
This British Airways deal was found by Cheapflights users on 1/6. 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.
Thu 1/159:00 pmSFO - BHD
1 stop15h 30mBritish Airways
Wed 1/213:40 pmBHD - SFO
2 stops38h 54mBritish Airways
Deal found 1/6$652
This Air France deal was found by Cheapflights users on 1/6. 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.
Thu 1/151:55 pmSFO - BHD
1 stop18h 55mMultiple Airlines
Wed 1/215:20 pmBHD - SFO
1 stop26h 30mMultiple Airlines
Deal found 1/6$685
This Cheapflightsfares deal was found by Cheapflights users on 1/7. 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.
Sat 3/219:40 pmSFO - BHD
1 stop15h 00mBritish Airways
Sun 4/56:50 amBHD - SFO
2 stops17h 00mBritish Airways
Deal found 1/7$703
This Mytrip deal was found by Cheapflights users on 1/7. 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.
Sat 2/213:40 pmSFO - BFS
2 stops22h 30mMultiple Airlines
Sat 2/2811:10 pmBFS - SFO
3 stops47h 25mMultiple Airlines
Deal found 1/7$743
This oojo deal was found by Cheapflights users on 1/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/261:35 pmSFO - BHD
2 stops17h 45mBritish Airways
Tue 6/96:15 pmBHD - SFO
1 stop27h 35mBritish Airways
Deal found 1/6$809

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 January 8, 2026.
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

Wed 3/4

5:30 pm-4:35 pm

1 stop15h 05m

Belfast City

Sun 3/8

9:10 am-3:00 pm

1 stop13h 50m

$627

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 2/25

5:30 pm-4:35 pm

1 stop15h 05m

Belfast City

Sun 3/1

12:10 pm-3:00 pm

1 stop34h 50m

$627

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Fri 2/27

8:40 pm-7:15 pm

1 stop14h 35m

Belfast City

Tue 3/3

11:25 am-6:45 pm

1 stop15h 20m

$627

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sat 2/21

3:40 pm-10:10 pm

2 stops22h 30m

Belfast Intl

Sat 2/28

11:10 pm-2:35 pm

3 stops47h 25m

$743

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 2/8

3:50 pm-4:50 pm

2 stops17h 00m

$176

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 3/31

9:51 pm-8:50 am

2 stops26h 59m

$178

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Fri 1/30

11:13 pm-11:10 am

2 stops27h 57m

$226

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Fri 1/30

1:55 pm-4:50 pm

1 stop18h 55m

$272

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sun 2/8

9:25 pm-8:55 am

2 stops27h 30m

$297

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 3/31

7:40 pm-9:45 am

1 stop30h 05m

$308

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

Showing 1-10 of 14 results
1
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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, April is the cheapest month in which you can book a flight from San Francisco to Northern Ireland (average of $587). Flying from San Francisco to Northern Ireland in December is currently the most expensive (average of $1,097). 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.

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 January 8, 2026.
Get a feel of what it's like to fly with 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.
British Airways
6.7
Okay
7,657 reviews

Overall

6.7

Comfort

6.8

Entertainment

6.4

Boarding

6.9

Crew

7.6

Food

6.4

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.
British Airways
6.7
Okay
7,657 reviews
British Airways
6.7
Okay
7,657 reviews

Overall

6.7

Comfort

6.8

Entertainment

6.4

Boarding

6.9

Crew

7.6

Food

6.4

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.

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 15h 05m. Fly via British Airways 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, April is the cheapest month in which you can book a flight from San Francisco to Northern Ireland (average of $587). Flying from San Francisco to Northern Ireland in December is currently the most expensive (average of $1,097). 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.

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Alternative routes for San Francisco to Northern Ireland

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Top airline flying from San Francisco to Northern Ireland

Discover the top airline 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 January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$621Average$757FlexibilityNo cancel feeOn-time70%

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