How long is the flight from Northern Ireland to San Francisco?

British Airways can get you from Northern Ireland to San Francisco in just under 27h. Your travel time can differ by up to . Northern Ireland and San Francisco are separated by a distance of 5038 mi.

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.

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).

What is the cheapest time of day to fly from NIR to SFO?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Northern Ireland to San Francisco as you normally would.

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.

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.

$798+ Flights from Northern Ireland to San Francisco

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Cheap flight deals from Northern Ireland to San Francisco

Best flights from Northern Ireland to San Francisco
Discover carefully curated flight deals from Northern Ireland to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 4, 2025.

Thu 1/158:00 pmBHD - SFO

1 stop27h 00mBritish Airways

Mon 1/197:00 amSFO - BHD

2 stops19h 40mBritish Airways

Deal found 12/2

$798

Sat 1/1711:10 pmBFS - SFO

3 stops47h 25mMultiple Airlines

Sat 1/2410:15 amSFO - BFS

3 stops25h 40mMultiple Airlines

Deal found 12/3

$819

Last-minute flights from Northern Ireland to San Francisco
Discover last-minute flight deals from Northern Ireland to San Francisco. Data last updated December 4, 2025 and is based on user searches.

Thu 1/158:00 pmBHD - SFO

1 stop27h 00mBritish Airways

Mon 1/197:00 amSFO - BHD

2 stops19h 40mBritish Airways

Deal found 12/2

$798

Sat 1/1711:10 pmBFS - SFO

3 stops47h 25mMultiple Airlines

Sat 1/2410:15 amSFO - BFS

3 stops25h 40mMultiple Airlines

Deal found 12/3

$819

Find flight deals from Northern Ireland to San Francisco

Round-trip from	$798 (British Airways)
Popular in	July
Cheapest in	January
Average price	$953

From Northern Ireland to San Francisco

Search Deals

Highest demand for flights based on searches. 16% potential increase in price ($151 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 8% potential price decrease ($63 potential savings vs. average RT price).

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Average for round-trip flights in December 2025

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Northern Ireland to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 1/15

8:00 pm-3:00 pm

1 stop27h 00m

San Francisco

Mon 1/19

7:00 am-10:40 am

2 stops19h 40m

$798

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Sat 1/17

11:10 pm-2:35 pm

3 stops47h 25m

San Francisco

Sat 1/24

10:15 am-7:55 pm

3 stops25h 40m

$819

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

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

No data available for this route at this time. Please check back soon.

Related info for your journey

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.
How long is the flight from Northern Ireland to San Francisco?
British Airways can get you from Northern Ireland to San Francisco in just under 27h. Your travel time can differ by up to . Northern Ireland and San Francisco are separated by a distance of 5038 mi.
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.

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$798+ 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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Northern Ireland to San Francisco with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Northern Ireland to San Francisco

Best flights from Northern Ireland to San FranciscoDiscover carefully curated flight deals from Northern Ireland to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 4, 2025.

Discover carefully curated flight deals from Northern Ireland to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 4, 2025.

Find 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 December 4, 2025.

Round-trip from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Northern Ireland to San Francisco that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from Northern Ireland to San Francisco

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?

How long is the flight from Northern Ireland to San Francisco?

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

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

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

Traveling to a place near San Francisco?

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Best flights from Northern Ireland to San Francisco
Discover carefully curated flight deals from Northern Ireland to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 4, 2025.