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$630+ Cheap flights from San Francisco (SFO) to Northern Ireland

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/24. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BFS
Dec 10 — Dec 171
Wed 12/10
Wed 12/17
1 adult, Economy
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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 November 10, 2025.

This Delta deal was found by Cheapflights users on 11/9. 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.
Wed 12/31:55 pmSFO - BHD
1 stop18h 55mDelta
Sun 12/76:30 amBHD - SFO
1 stop13h 20mDelta
Deal found 11/9$681
This American Airlines deal was found by Cheapflights users on 11/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/68:40 pmSFO - BHD
1 stop15h 00mAmerican Airlines
Sat 12/136:35 amBHD - SFO
1 stop16h 25mAmerican Airlines
Deal found 11/9$688
This American Airlines deal was found by Cheapflights users on 11/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/158:45 amSFO - BHD
2 stops18h 25mAmerican Airlines
Sat 11/229:15 amBHD - SFO
2 stops20h 18mAmerican Airlines
Deal found 11/9$703
This Delta deal was found by Cheapflights users on 11/10. 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.
Sat 11/1511:45 amSFO - BHD
2 stops25h 15mDelta
Sun 11/236:30 amBHD - SFO
1 stop13h 20mDelta
Deal found 11/10$715
This Mytrip deal was found by Cheapflights users on 11/10. 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 12/610:15 amSFO - BFS
3 stops25h 40mMultiple Airlines
Sat 12/1311:10 pmBFS - SFO
3 stops47h 25mMultiple Airlines
Deal found 11/10$853
This Mytrip deal was found by Cheapflights users on 11/10. 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 12/610:15 amSFO - BFS
3 stops25h 40mMultiple Airlines
Fri 12/126:30 amBFS - SFO
3 stops40h 15mMultiple Airlines
Deal found 11/10$868
This FlightHub deal was found by Cheapflights users on 11/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/68:00 amSFO - BHD
2 stops27h 40mBritish Airways
Sat 12/136:35 amBHD - SFO
1 stop16h 25mBritish Airways
Deal found 11/10$872
This American Airlines deal was found by Cheapflights users on 11/8. 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.
Wed 12/39:00 amSFO - BHD
2 stops21h 15mAmerican Airlines
Sun 12/76:30 amBHD - SFO
2 stops20h 00mAmerican Airlines
Deal found 11/8$874
This FlightHub deal was found by Cheapflights users on 11/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/68:00 amSFO - BHD
2 stops27h 40mBritish Airways
Fri 12/127:35 pmBHD - SFO
2 stops34h 53mBritish Airways
Deal found 11/10$909
This Cheapflightsfares deal was found by Cheapflights users on 11/10. 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 12/65:20 pmSFO - BHD
2 stops16h 00mAer Lingus
Sat 12/136:00 pmBHD - SFO
2 stops30h 35mAer Lingus
Deal found 11/10$917
This Ovago deal was found by Cheapflights users on 11/9. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/68:40 pmSFO - BHD
1 stop15h 00mMultiple Airlines
Fri 12/123:25 pmBHD - SFO
2 stops32h 10mMultiple Airlines
Deal found 11/9$931
This Virgin Atlantic deal was found by Cheapflights users on 11/10. 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.
Sat 11/1511:45 amSFO - BHD
2 stops21h 05mVirgin Atlantic
Sat 11/226:30 amBHD - SFO
1 stop13h 20mVirgin Atlantic
Deal found 11/10$974

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 November 10, 2025.

Round-trip from

$630
(Cheapflightsfares)

Popular in

June

Cheapest in

April

Average price

$1,032
From San Francisco to Northern Ireland
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($148 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 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 November 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

Tue 3/24

6:30 pm-2:50 pm

1 stop13h 20m

Belfast City

Tue 3/31

6:35 am-1:50 pm

1 stop15h 15m

$630

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 3/24

10:24 am-10:30 am

2 stops17h 06m

Belfast City

Tue 3/31

6:35 am-1:50 pm

1 stop15h 15m

$645

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 3/24

9:37 am-11:30 am

2 stops18h 53m

Belfast City

Tue 3/31

6:35 am-6:42 pm

2 stops20h 07m

$653

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 12/3

1:55 pm-9:00 pm

1 stop23h 05m

Belfast City

Sun 12/7

6:30 am-11:50 am

1 stop13h 20m

$680

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sat 12/6

8:40 pm-7:40 pm

1 stop15h 00m

Belfast City

Sat 12/13

6:35 am-3:00 pm

1 stop16h 25m

$688

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sat 12/6

10:15 am-7:55 pm

3 stops25h 40m

Belfast Intl

Fri 12/12

6:30 am-2:45 pm

3 stops40h 15m

$868

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sat 12/6

4:35 pm-11:50 pm

2 stops23h 15m

Belfast Intl

Sat 12/13

11:10 pm-2:35 pm

3 stops47h 25m

$932

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sun 3/29

5:45 pm-9:30 pm

2 stops19h 45m

Belfast Intl

Sat 4/4

3:35 pm-4:45 pm

3 stops33h 10m

$1,122

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

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 November 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.

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 November 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
7,510 reviews

Comfort

6.7

Crew

7.6

Boarding

6.9

Food

6.3

Entertainment

6.4

Overall

6.7

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
7,510 reviews
British Airways
6.7
Okay
7,510 reviews

Comfort

6.7

Crew

7.6

Boarding

6.9

Food

6.3

Entertainment

6.4

Overall

6.7

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 13h 20m. Fly via British Airways, American Airlines, or Delta to get the fastest option. There are 5038 mi between San Francisco and Northern Ireland. This flight may include one or multiple stops.

  • 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 November 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$621Average$814FlexibilityNo cancel feeOn-time70%

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