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$342+ 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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BFS
Jan 9 — Jan 161
Fri 1/9
Fri 1/16
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 10, 2025.

This Delta deal was found by Cheapflights users on 12/9. 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.
Fri 12/261:55 pmSFO - BHD
1 stop23h 05mDelta
Fri 1/26:30 amBHD - SFO
2 stops19h 20mDelta
Deal found 12/9$2,423
This Travelocity deal was found by Cheapflights users on 12/9. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/265:20 pmSFO - BHD
2 stops19h 40mMultiple Airlines
Fri 1/211:30 amBHD - SFO
2 stops28h 08mMultiple Airlines
Deal found 12/9$2,427
This Mytrip deal was found by Cheapflights users on 12/9. 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.
Fri 12/265:20 pmSFO - BFS
2 stops20h 40mMultiple Airlines
Fri 1/29:00 pmBFS - SFO
2 stops23h 40mMultiple Airlines
Deal found 12/9$2,478
This Cheapflightsfares deal was found by Cheapflights users on 12/9. 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.
Fri 12/265:30 pmSFO - BHD
1 stop15h 45mBritish Airways
Fri 1/28:45 amBHD - SFO
1 stop14h 15mBritish Airways
Deal found 12/9$2,737
This British Airways deal was found by Cheapflights users on 12/9. 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 12/194:41 pmSFO - BHD
2 stops18h 34mBritish Airways
Fri 1/28:45 amBHD - SFO
1 stop18h 00mBritish Airways
Deal found 12/9$3,506
This Mytrip deal was found by Cheapflights users on 12/9. 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.
Fri 12/195:20 pmSFO - BFS
2 stops17h 35mMultiple Airlines
Fri 1/25:45 amBFS - SFO
3 stops38h 55mMultiple Airlines
Deal found 12/9$3,525
This Mytrip deal was found by Cheapflights users on 12/9. 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.
Fri 12/1911:59 pmSFO - BHD
3 stops29h 51mMultiple Airlines
Fri 1/26:00 pmBHD - SFO
2 stops26h 40mMultiple Airlines
Deal found 12/9$3,547
This Bravofly deal was found by Cheapflights users on 12/9. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/191:55 pmSFO - BHD
1 stop18h 55mVirgin Atlantic
Fri 1/26:30 amBHD - SFO
1 stop13h 20mVirgin Atlantic
Deal found 12/9$3,840

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 10, 2025.

Round-trip from

$670
(Cheapflightsfares)

One-way from

$342
(KAYAK)

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 ($159 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
Search Deals

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 10, 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

Wed 2/11

5:30 pm-4:35 pm

1 stop15h 05m

Belfast City

Sun 2/15

10:40 am-6:45 pm

1 stop16h 05m

$680

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Fri 3/27

6:30 pm-7:15 pm

1 stop17h 45m

Belfast City

Thu 4/2

6:35 am-1:50 pm

1 stop15h 15m

$685

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Thu 3/26

9:40 pm-8:30 pm

1 stop15h 50m

Belfast City

Thu 4/2

6:35 am-1:50 pm

1 stop15h 15m

$685

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sat 4/18

11:08 pm-11:30 am

2 stops28h 22m

Belfast City

Sat 4/25

7:00 pm-1:50 pm

1 stop26h 50m

$696

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Thu 3/26

6:30 pm-4:40 pm

1 stop15h 10m

Belfast City

Fri 4/3

6:35 am-1:50 pm

1 stop15h 15m

$696

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 5/19

2:46 pm-7:25 pm

2 stops20h 39m

Belfast City

Thu 6/18

6:35 am-1:50 pm

1 stop15h 15m

$716

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sat 1/24

4:40 pm-10:30 pm

2 stops21h 50m

Belfast Intl

Sat 1/31

11:10 pm-2:35 pm

3 stops47h 25m

$876

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 5/19

7:45 pm-9:45 am

1 stop30h 00m

Belfast Intl

Thu 6/18

3:25 pm-1:35 pm

2 stops30h 10m

$1,203

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Fri 12/26

5:20 pm-10:00 pm

2 stops20h 40m

Belfast Intl

Fri 1/2

9:00 pm-12:40 pm

2 stops23h 40m

$2,478

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 2/4

5:20 pm-5:20 pm

2 stops16h 00m

$342

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/8

Showing 1-10 of 14 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 10, 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.

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

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 10, 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
7,573 reviews

Food

6.4

Boarding

6.9

Overall

6.7

Comfort

6.7

Entertainment

6.4

Crew

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.
British Airways
6.7
Okay
7,573 reviews
British Airways
6.7
Okay
7,573 reviews

Food

6.4

Boarding

6.9

Overall

6.7

Comfort

6.7

Entertainment

6.4

Crew

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.

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 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 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$621Average$767FlexibilityNo cancel feeOn-time70%

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