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Northern Ireland

$206+ 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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BFS
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This oojo deal was found by Cheapflights users on 12/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:37 pmSFO - BHD
2 stops31h 53mBritish Airways
Tue 12/307:25 pmBHD - SFO
2 stops33h 40mBritish Airways
Deal found 12/16$1,489
This Trip.com deal was found by Cheapflights users on 12/17. 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.
Thu 12/1812:50 pmSFO - BHD
1 stop19h 50mMultiple Airlines
Sat 12/2011:35 amBHD - SFO
1 stop33h 45mMultiple Airlines
Deal found 12/17$1,769
This Ovago deal was found by Cheapflights users on 12/17. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/189:00 amSFO - BHD
2 stops17h 20mBritish Airways
Sat 12/203:05 pmBHD - SFO
2 stops33h 59mBritish Airways
Deal found 12/17$1,824
This Trip.com deal was found by Cheapflights users on 12/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2412:50 pmSFO - BFS
1 stop35h 30mMultiple Airlines
Tue 12/306:00 amBFS - SFO
1 stop19h 00mMultiple Airlines
Deal found 12/16$1,825
This Trip.com deal was found by Cheapflights users on 12/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2412:50 pmSFO - BHD
1 stop34h 40mMultiple Airlines
Tue 12/306:35 amBHD - SFO
1 stop18h 25mMultiple Airlines
Deal found 12/16$1,878
This Finnair deal was found by Cheapflights users on 12/16. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2210:10 amSFO - BHD
2 stops41h 20mFinnair
Sun 1/412:10 pmBHD - SFO
2 stops39h 34mFinnair
Deal found 12/16$2,214
This British Airways deal was found by Cheapflights users on 12/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/214:17 pmSFO - BHD
2 stops18h 23mBritish Airways
Sat 1/36:35 amBHD - SFO
2 stops45h 34mBritish Airways
Deal found 12/16$2,381
This Finnair deal was found by Cheapflights users on 12/16. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2112:19 pmSFO - BHD
2 stops17h 36mFinnair
Sun 1/412:10 pmBHD - SFO
2 stops39h 34mFinnair
Deal found 12/16$2,400
This British Airways deal was found by Cheapflights users on 12/15. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2111:20 amSFO - BHD
2 stops21h 30mBritish Airways
Sun 1/412:10 pmBHD - SFO
2 stops32h 29mBritish Airways
Deal found 12/15$2,551
This British Airways deal was found by Cheapflights users on 12/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/224:17 pmSFO - BHD
2 stops18h 18mBritish Airways
Sat 1/36:35 amBHD - SFO
2 stops45h 34mBritish Airways
Deal found 12/16$2,577
This British Airways deal was found by Cheapflights users on 12/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/214:17 pmSFO - BHD
2 stops18h 23mBritish Airways
Fri 1/211:30 amBHD - SFO
2 stops19h 28mBritish Airways
Deal found 12/16$2,641

Find 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 December 18, 2025.

Round-trip from

$622
(Cheapflightsfares)

One-way from

$206
(Cheapflightsfares)

Popular in

June

Cheapest in

April

Average price

$1,136
From San Francisco to Northern Ireland
Search Deals
One-way flight from San Francisco to Northern Ireland
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($160 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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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 December 18, 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

Tue 1/13

8:40 pm-8:15 pm

1 stop15h 35m

Belfast City

Tue 1/20

6:35 am-3:00 pm

1 stop16h 25m

$622

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 1/12

8:40 pm-8:15 pm

1 stop15h 35m

Belfast City

Tue 1/27

8:45 am-3:00 pm

1 stop14h 15m

$625

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 1/18

8:40 pm-8:15 pm

1 stop15h 35m

Belfast City

Mon 1/26

5:45 pm-3:00 pm

1 stop29h 15m

$644

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 1/13

8:40 pm-6:40 pm

1 stop14h 00m

Belfast City

Mon 1/26

7:25 pm-3:00 pm

1 stop27h 35m

$644

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 1/14

5:30 pm-7:30 am

1 stop30h 00m

Belfast City

Thu 1/22

10:40 am-3:00 pm

1 stop36h 20m

$654

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 1/14

8:40 pm-7:30 am

1 stop26h 50m

Belfast City

Mon 1/26

7:25 pm-3:00 pm

1 stop27h 35m

$654

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 1/12

8:40 pm-6:35 pm

1 stop13h 55m

Belfast City

Tue 1/27

8:45 am-9:37 pm

2 stops20h 52m

$655

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 1/12

9:50 am-4:50 pm

2 stops23h 00m

Belfast City

Tue 1/27

5:20 pm-11:50 am

1 stop26h 30m

$667

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 1/13

10:35 am-4:50 pm

2 stops22h 15m

Belfast City

Thu 1/22

5:20 pm-11:50 am

1 stop26h 30m

$671

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Mon 1/12

4:30 pm-4:15 pm

1 stop15h 45m

Belfast Intl

Tue 1/27

5:45 am-8:10 pm

2 stops46h 25m

$903

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 18 results
1
2

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 November is currently the most expensive (average of $1,032). 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 December 18, 2025.

It’s typically best to fly out from San Francisco to Northern Ireland at noon. Doing so could potentially save you 29% on the flight price compared to flying in the morning, which is usually more expensive.

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 December 18, 2025.
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
7,585 reviews

Entertainment

6.4

Crew

7.6

Overall

6.7

Boarding

6.9

Food

6.4

Comfort

6.7

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
7,585 reviews
British Airways
6.7
Okay
7,585 reviews

Entertainment

6.4

Crew

7.6

Overall

6.7

Boarding

6.9

Food

6.4

Comfort

6.7

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 35m. 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 November is currently the most expensive (average of $1,032). 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

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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$621Average$758FlexibilityNo cancel feeOn-time70%

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