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 15h 20m. 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.

$702+ Flights from Northern Ireland to San Francisco

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Cheap 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 January 29, 2026.

Fri 3/136:45 am

BHD

SFO

2 stops22h 56m

British Airways

Mon 3/1611:30 am

SFO

BHD

2 stops19h 45m

British Airways

Deal found 1/26

$702

Fri 4/246:30 am

BHD

SFO

1 stop15h 20m

British Airways

Tue 4/284:35 pm

SFO

BHD

1 stop15h 50m

British Airways

Deal found 1/26

$713

Sat 6/206:20 am

BFS

SFO

2 stops17h 55m

Multiple Airlines

Sun 6/215:35 pm

SFO

BFS

2 stops19h 55m

Multiple Airlines

Deal found 1/27

$1,215

Fri 3/132:20 pm

BFS

SFO

2 stops34h 10m

Multiple Airlines

Thu 3/193:40 pm

SFO

BFS

2 stops23h 20m

Multiple Airlines

Deal found 1/27

$1,272

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 January 29, 2026.

Fri 4/246:30 am

BHD

SFO

1 stop15h 20m

British Airways

Tue 4/284:35 pm

SFO

BHD

1 stop15h 50m

British Airways

Deal found 1/26

$713

Sat 6/206:20 am

BFS

SFO

2 stops17h 55m

Multiple Airlines

Sun 6/215:35 pm

SFO

BFS

2 stops19h 55m

Multiple Airlines

Deal found 1/27

$1,215

Fri 3/136:45 am

BHD

SFO

1 stop16h 15m

British Airways

Mon 3/166:21 am

SFO

BHD

2 stops24h 54m

British Airways

Deal found 1/26

$714

Fri 3/131:25 pm

BFS

SFO

2 stops35h 05m

Multiple Airlines

Thu 3/198:30 am

SFO

BFS

3 stops28h 00m

Multiple Airlines

Deal found 1/27

$1,438

Find flight deals from Northern Ireland to San Francisco

Round-trip from	$702 (British Airways)
Popular in	July
Cheapest in	January
Average price	$546

From Northern Ireland to San Francisco

Search Deals

Highest demand for flights based on searches. 16% potential increase in price ($148 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 8% potential price decrease ($62 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in January 2026

Search Deals

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

Fri 4/24

6:30 am-1:50 pm

1 stop15h 20m

San Francisco

Tue 4/28

4:35 pm-4:25 pm

1 stop15h 50m

$713

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 3/13

6:45 am-4:00 pm

1 stop16h 15m

San Francisco

Mon 3/16

6:21 am-2:15 pm

2 stops24h 54m

$714

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Sat 6/20

6:20 am-4:15 pm

2 stops17h 55m

San Francisco

Sun 6/21

5:35 pm-9:30 pm

2 stops19h 55m

$1,215

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Fri 3/13

1:25 pm-5:30 pm

2 stops35h 05m

San Francisco

Thu 3/19

8:30 am-7:30 pm

3 stops28h 00m

$1,438

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

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 15h 20m. 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.

See more FAQs

South San Francisco

Santa Cruz

Roseville

Santa Clara

Livermore

Watsonville

San Bruno

Daly City

Sunnyvale

Turlock

Vacaville

San Carlos

San Ramon

Manteca

Vallejo

San Lorenzo

Davis

Hollister

Redwood City

Union City

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$702+ 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 3/13. 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

Cheapest flights from Northern Ireland to San FranciscoExplore 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 January 29, 2026.

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 January 29, 2026.

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 January 29, 2026.

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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Alternative routes for Northern Ireland to San Francisco

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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 January 29, 2026.