HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Northern Ireland

$641+ 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BFS
dic. 17 — dic. 241
mié. 12/17
mié. 12/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Francisco to Northern Ireland with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 noviembre 17, 2025.

This Virgin Atlantic deal was found by Cheapflights users on 11/16. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/31:55 pmSFO - BHD
1 stop18h 55mVirgin Atlantic
dom. 12/75:20 pmBHD - SFO
1 stop26h 30mVirgin Atlantic
Deal found 11/16$683
This Air France deal was found by Cheapflights users on 11/17. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/61:55 pmSFO - BHD
1 stop18h 55mMultiple Airlines
vie. 12/125:20 pmBHD - SFO
1 stop26h 30mMultiple Airlines
Deal found 11/17$712
This Ovago deal was found by Cheapflights users on 11/16. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/65:20 pmSFO - BHD
2 stops19h 30mAer Lingus
vie. 12/126:50 pmBHD - SFO
2 stops28h 45mAer Lingus
Deal found 11/16$1,007
This American Airlines deal was found by Cheapflights users on 11/16. 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.
mié. 12/37:21 amSFO - BHD
2 stops17h 49mAmerican Airlines
dom. 12/76:30 amBHD - SFO
2 stops20h 00mAmerican Airlines
Deal found 11/16$1,049

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 noviembre 17, 2025.

Round-trip from

$641
(British Airways)

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 noviembre 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

mar. 3/3

5:30 pm-2:50 pm

1 stop13h 20m

Belfast City

mar. 3/10

6:35 am-7:45 pm

1 stop20h 10m

$641

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

lun. 1/5

5:30 pm-8:25 am

1 stop30h 55m

Belfast City

mar. 1/20

7:25 pm-3:00 pm

1 stop27h 35m

$652

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

mar. 3/3

9:00 am-11:30 am

2 stops18h 30m

Belfast City

mar. 3/10

8:45 am-8:58 pm

2 stops19h 13m

$653

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

mié. 12/3

1:55 pm-4:50 pm

1 stop18h 55m

Belfast City

dom. 12/7

5:20 pm-11:50 am

1 stop26h 30m

$683

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

mié. 12/3

10:40 am-4:50 pm

2 stops22h 10m

Belfast City

dom. 12/7

6:30 am-11:50 am

1 stop13h 20m

$687

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

sáb. 12/6

1:55 pm-4:50 pm

1 stop18h 55m

Belfast City

vie. 12/12

5:20 pm-11:50 am

1 stop26h 30m

$712

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

lun. 1/5

5:25 pm-8:10 pm

1 stop18h 45m

Belfast Intl

mar. 1/20

6:30 am-5:00 pm

1 stop18h 30m

$732

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

mié. 1/7

6:18 pm-9:20 am

3 stops55h 02m

$1,385

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

jue. 1/8

9:00 am-9:20 am

3 stops40h 20m

$1,385

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

mar. 1/6

5:42 pm-9:45 am

3 stops56h 03m

$1,424

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/17

Showing 1-10 of 15 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 noviembre 17, 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 noviembre 17, 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
7,528 reviews

Overall

6.7

Food

6.3

Boarding

6.9

Crew

7.6

Comfort

6.7

Entertainment

6.4

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
7,528 reviews
British Airways
6.7
Okay
7,528 reviews

Overall

6.7

Food

6.3

Boarding

6.9

Crew

7.6

Comfort

6.7

Entertainment

6.4

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 or American Airlines to get the fastest option. There are 5038 mi between San Francisco and Northern Ireland. This flight may include one or multiple stops.

  • 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Francisco to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Heathrow flights
San Francisco to Heathrow flights
Los Angeles to Gatwick flights
Los Angeles to London City flights
San Francisco to Gatwick flights
San Francisco to London City flights
Los Angeles to Stansted flights
San Diego to Heathrow flights
Ontario to Heathrow flights
Los Angeles to Luton flights
San Francisco to Stansted flights
Santa Ana to Heathrow flights
Las Vegas to Heathrow flights
San Francisco to Luton flights
San Diego to Gatwick flights
San Jose to Heathrow flights
Los Angeles to Edinburgh flights
Las Vegas to Gatwick flights
San Francisco to Edinburgh flights
Las Vegas to London City flights
San Diego to London City flights
Los Angeles to Glasgow Intl flights
Los Angeles to Manchester flights
Sacramento to Heathrow flights
San Francisco to Glasgow Intl flights
Oakland to Heathrow flights
San Diego to Stansted flights
Sacramento to Gatwick flights
Ontario to Gatwick flights
San Jose to Gatwick flights
Burbank to Heathrow flights
Las Vegas to Stansted flights
Santa Ana to Edinburgh flights
Ontario to Manchester flights
Palm Springs to Heathrow flights
Santa Ana to Glasgow Intl flights
Reno to Heathrow flights
San Francisco to Manchester flights
Oakland to Gatwick flights
Santa Ana to Manchester flights
San Francisco to Southampton flights
Las Vegas to Edinburgh flights
San Jose to Edinburgh flights
Ontario to Edinburgh flights
Ontario to Glasgow Intl flights
Santa Rosa to Heathrow flights
Burbank to Manchester flights
Santa Ana to Gatwick flights
Long Beach to Heathrow flights

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 noviembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$621Average$814FlexibilityNo cancel feeOn-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.