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$709+ 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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — SFO
May 4 — May 111
Sun 5/4
Sun 5/11
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 April 29, 2025.

Round-trip from

$709
(Expedia)

Popular in

June

Cheapest in

April

Average price

$608
From Northern Ireland to San Francisco
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($145 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 29, 2025.

This Expedia deal was found by Cheapflights users on 4/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/237:05 amBHD - SFO
1 stop14h 45mBritish Airways
Thu 9/47:20 pmSFO - BHD
1 stop15h 25mBritish Airways
Deal found 4/29$709
This Delta deal was found by Cheapflights users on 4/29. 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 8/206:30 amBHD - SFO
1 stop13h 15mDelta
Fri 9/55:15 pmSFO - BHD
2 stops20h 00mDelta
Deal found 4/29$795
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Fri 7/116:35 amBHD - SFO
2 stops20h 32mAmerican Airlines
Sat 7/263:11 pmSFO - BHD
2 stops18h 04mAmerican Airlines
Deal found 4/29$823
This KAYAK deal was found by Cheapflights users on 4/29. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/116:35 amBHD - SFO
1 stop15h 15mIberia
Sat 7/264:35 pmSFO - BHD
1 stop16h 40mIberia
Deal found 4/29$942
This Booking.com deal was found by Cheapflights users on 4/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/239:30 pmBFS - SFO
3 stops31h 55mMultiple Airlines
Thu 9/411:50 amSFO - BFS
2 stops27h 40mMultiple Airlines
Deal found 4/29$1,143
This KLM deal was found by Cheapflights users on 4/28. 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 7/306:30 amBHD - SFO
1 stop13h 15mKLM
Mon 8/251:45 pmSFO - BHD
1 stop19h 10mKLM
Deal found 4/28$1,260
This Booking.com deal was found by Cheapflights users on 4/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/36:55 amBHD - SFO
2 stops17h 00mMultiple Airlines
Wed 9/37:20 pmSFO - BHD
1 stop15h 20mMultiple Airlines
Deal found 4/29$1,361

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 April 29, 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

BHD - SFO

BHDSFO

Belfast City

Sat 8/23

7:05 am-1:50 pm

1 stop14h 45m

San Francisco

Thu 9/4

7:20 pm-6:45 pm

1 stop15h 25m

$709

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 8/20

6:30 am-11:45 am

1 stop13h 15m

San Francisco

Fri 9/5

5:15 pm-9:15 pm

2 stops20h 00m

$795

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 7/11

6:35 am-7:07 pm

2 stops20h 32m

San Francisco

Sat 7/26

3:11 pm-5:15 pm

2 stops18h 04m

$823

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 7/11

6:35 am-1:50 pm

1 stop15h 15m

San Francisco

Sat 7/26

4:35 pm-5:15 pm

1 stop16h 40m

$942

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 7/30

6:30 am-11:45 am

1 stop13h 15m

San Francisco

Mon 8/25

1:45 pm-4:55 pm

1 stop19h 10m

$1,260

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 9/3

6:55 am-3:55 pm

2 stops17h 00m

San Francisco

Wed 9/3

7:20 pm-6:40 pm

1 stop15h 20m

$1,361

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 9/3

6:50 am-5:25 pm

1 stop18h 35m

$752

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 9/3

6:00 pm-3:55 pm

2 stops29h 55m

$778

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

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

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 $393). 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 San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 April 29, 2025.
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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
Aer Lingus
7.0
Good
1,076 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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
Iberia
7.0
Good
2,698 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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 $393). 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 Northern Ireland?

Book flights to Northern Ireland if you plan to visit one of these locations
Roseville
Mountain View
Santa Cruz
Livermore
South San Francisco
Turlock
Manteca
Fairfield
Richmond
Watsonville
Hollister
Newark
Milpitas
Antioch
Sausalito
Hayward
Alameda
Sunnyvale
Campbell
Daly City

Browse thousands of different options on Cheapflights for your next trip

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