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$707+ Cheap flights from Northern Ireland to San Francisco (SFO)

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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — SFO
Aug 12 — Aug 191
Tue 8/12
Tue 8/19
1 adult, Economy
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Cheap flight deals from Northern Ireland to San Francisco

Keep the following information in mind while searching for Northern Ireland to San Francisco flight deals. Data was last updated August 7, 2025.

Round-trip from

$707
(Mytrip)

Popular in

December

Cheapest in

April

Average price

$702
From Northern Ireland to San Francisco
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($19 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find flight deals from Northern Ireland to San Francisco

Cheapest flights from Northern Ireland to San Francisco
Explore the most affordable flight options available from Northern Ireland to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 7, 2025.

This Mytrip deal was found by Cheapflights users on 8/7. 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.
Sun 9/2111:30 pmBFS - SFO
3 stops46h 05mMultiple Airlines
Sun 9/2810:15 amSFO - BFS
3 stops21h 40mMultiple Airlines
Deal found 8/7$707
This British Airways deal was found by Cheapflights users on 8/6. 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.
Wed 8/2011:30 amBHD - SFO
2 stops19h 37mBritish Airways
Fri 9/511:32 amSFO - BHD
2 stops25h 13mBritish Airways
Deal found 8/6$871
This KLM deal was found by Cheapflights users on 8/6. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/206:30 amBHD - SFO
1 stop13h 15mKLM
Fri 9/51:45 pmSFO - BHD
1 stop23h 30mKLM
Deal found 8/6$880
This Gurufare deal was found by Cheapflights users on 8/7. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2011:30 amBHD - SFO
1 stop13h 55mMultiple Airlines
Fri 9/54:30 pmSFO - BHD
1 stop33h 40mMultiple Airlines
Deal found 8/7$1,116

Cheapflights Fare Finder

 
Customize your flight search to find flights from Northern Ireland to San Francisco 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 August 7, 2025.
Use the filters below to find and compare flights from Northern Ireland to San Francisco that are best for you.

Fly from

Northern Ireland

Fly to

San Francisco

Route

Depart

Return

Price

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Sun 9/21

11:30 pm-1:35 pm

3 stops46h 05m

San Francisco

Sun 9/28

10:15 am-3:55 pm

3 stops21h 40m

$707

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 8/20

6:30 am-11:45 am

1 stop13h 15m

San Francisco

Fri 9/5

1:45 pm-9:15 pm

1 stop23h 30m

$868

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 8/20

6:30 am-11:45 am

1 stop13h 15m

San Francisco

Fri 9/5

9:35 am-4:55 pm

2 stops23h 20m

$869

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 8/20

11:30 am-11:07 pm

2 stops19h 37m

San Francisco

Fri 9/5

11:32 am-8:45 pm

2 stops25h 13m

$871

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/7

Best time to book a flight from Northern Ireland to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Northern Ireland 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 Northern Ireland to San Francisco

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

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated August 7, 2025.
Read through reviews of airlines operating flights from Northern Ireland to San Francisco, such as Delta and British Airways. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,987 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,987 reviews
Delta
8.0
Very good
7,987 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
British Airways
6.7
Okay
7,251 reviews
Delta
8.0
Very good
7,987 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland to San Francisco. 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 into for flights to San Francisco from Northern Ireland?

    Most people fly into San Francisco (SFO) if they book a flight to San Francisco from Northern Ireland. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

  • Can I find deals for flights from Northern Ireland to San Francisco that include hotel bookings?

    Yes. In addition to deals on Northern Ireland to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Northern Ireland to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Northern Ireland to San Francisco.

  • Can I find deals for business class flights from Northern Ireland to San Francisco?

    Yes. Cheapflights offers flight deals from Northern Ireland to San Francisco 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 Northern Ireland to San Francisco?

    Currently, January is the cheapest month in which you can book a flight from Northern Ireland to San Francisco (average of $276). Flying from Northern Ireland to San Francisco in June is currently the most expensive (average of $358). 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

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
Mountain View
Santa Cruz
Livermore
South San Francisco
Turlock
Hollister
Antioch
Watsonville
Manteca
Sunnyvale
Newark
Milpitas
Santa Clara
Campbell
Foster City
San Leandro
Burlingame
Redwood City
Vallejo

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