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Cheap flights from San Francisco to Northern Ireland from £208

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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BFS
26 Feb — 5 Mar1
1 adult

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 21 February 2025.

Round-trip from

£524

One-way from

£208

Popular in

January

Cheapest in

October

Average price

£558
British Airways
  • British Airways
  • 16/3-23/3
  • 2 total stops
  • 30h 30m total
  • San Francisco to Northern Ireland
Search Deals
1/4
  • 1/4
  • 3 total stops
  • 59h 45m total
  • San Francisco to Northern Ireland
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£81 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£22 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

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 21 February 2025.

Sun 16/321:40SFO - BHD
1 stop14h 00mBritish Airways
Sun 23/306:30BHD - SFO
1 stop16h 30mBritish Airways
Deal found 21/2£524
Sat 3/514:46SFO - BHD
2 stops18h 29mAmerican Airlines
Sat 10/509:35BHD - SFO
2 stops20h 16mAmerican Airlines
Deal found 21/2£577
Thu 6/313:50SFO - BHD
1 stop23h 10mKLM
Sat 15/317:20BHD - SFO
1 stop26h 30mKLM
Deal found 21/2£810
Sat 5/419:05SFO - BFS
2 stops20h 20mMultiple Airlines
Sat 12/413:05BFS - SFO
2 stops40h 32mMultiple Airlines
Deal found 20/2£862
Sat 5/416:35SFO - BHD
2 stops19h 50mMultiple Airlines
Sat 12/407:00BHD - SFO
3 stops37h 10mMultiple Airlines
Deal found 20/2£959

Find flights from San Francisco to Northern Ireland within your budget

Customise 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 858,174 searches. Data last updated 21 February 2025.

Fly from

San Francisco

Fly to

Northern Ireland

Route

Depart

Return

Price

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 16/3

21:40-18:40

1 stop14h 00m

Belfast City

Sun 23/3

06:30-16:00

1 stop16h 30m

£524

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sat 3/5

14:46-17:15

2 stops18h 29m

Belfast City

Sat 10/5

09:35-21:51

2 stops20h 16m

£577

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Thu 6/3

13:50-21:00

1 stop23h 10m

Belfast City

Sat 15/3

17:20-12:50

1 stop26h 30m

£810

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sat 5/4

19:05-23:25

2 stops20h 20m

Belfast Intl

Sat 12/4

13:05-21:37

2 stops40h 32m

£862

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sat 5/4

16:35-20:25

2 stops19h 50m

Belfast City

Sat 12/4

07:00-12:10

3 stops37h 10m

£959

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 1/4

22:30-18:15

3 stops59h 45m

£208

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 1/4

19:02-15:10

3 stops36h 08m

£236

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 1/4

16:20-17:30

1 stop17h 10m

£315

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Thu 20/3

14:50-21:00

1 stop23h 10m

£528

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Fri 21/3

18:30-19:15

1 stop17h 45m

£819

Flights are sorted by cheapest return flights first.

Deals found on 20/2

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 return 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.

Travel insights for flights from San Francisco to Northern Ireland

Get recent, data-driven insights about flights from San Francisco to Northern Ireland including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from San Francisco to Northern Ireland?

Currently, January is the cheapest month in which you can book a flight from San Francisco to Northern Ireland (average of £67). Flying from San Francisco to Northern Ireland in July is currently the most expensive (average of £90). 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.

Rainfall in Northern Ireland by month

Plan your trip to Northern Ireland by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Northern Ireland ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Northern Ireland when rainfall is around 50.0 mm.

Temperature in Northern Ireland by month

Plan your trip to Northern Ireland by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Northern Ireland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

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 21 February 2025.
KLM
7.8
Good
1,331 reviews
Check prices

Entertainment

7.2

Overall

7.8

Food

7.3

Crew

8.4

Boarding

7.8

Comfort

7.7

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

KLM
7.8
Good
1,331 reviews
KLM
7.8
Good
1,331 reviews
Check prices

Entertainment

7.2

Overall

7.8

Food

7.3

Crew

8.4

Boarding

7.8

Comfort

7.7

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

American Airlines
7.2
Good
10,000 reviews
KLM
7.8
Good
1,331 reviews
Check prices

Entertainment

7.2

Overall

7.8

Food

7.3

Crew

8.4

Boarding

7.8

Comfort

7.7

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Iberia
7.0
Good
2,639 reviews
KLM
7.8
Good
1,331 reviews
Check prices

Entertainment

7.2

Overall

7.8

Food

7.3

Crew

8.4

Boarding

7.8

Comfort

7.7

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

British Airways
6.6
Okay
6,762 reviews
KLM
7.8
Good
1,331 reviews
Check prices

Entertainment

7.2

Overall

7.8

Food

7.3

Crew

8.4

Boarding

7.8

Comfort

7.7

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

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?

    San Francisco (SFO), located 11.8 mi from the city center, is the airport you fly out of when you book flights from San Francisco to Northern Ireland.

  • What are the cheapest airlines to fly from San Francisco to Northern Ireland one-way?

    The cheapet airlines for a one-way flight from San Francisco to Northern Ireland are British Airways (£315), KLM (£528), and Iberia (£819).

  • What are the most popular routes from San Francisco to Northern Ireland?

    When deciding which route to take from San Francisco to Northern Ireland consider San Francisco - Belfast Intl, San Francisco - Belfast City or San Francisco - Campbeltown Machrihanish as they are the most popular.

  • 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 holiday 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, January is the cheapest month in which you can book a flight from San Francisco to Northern Ireland (average of £67). Flying from San Francisco to Northern Ireland in July is currently the most expensive (average of £90). 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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Can Cheapflights find flights from San Francisco to Northern Ireland with no change fees?

Need flexible booking options for your flight to Northern Ireland from San Francisco? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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Of course! You can now track prices for flights from San Francisco to Northern Ireland and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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