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

There are many flights that can get you from Northern Ireland to San Francisco Bay Area in 18h 48m. Fly via KLM, Delta, or British Airways to get the fastest option. There are 5038 mi between Northern Ireland and San Francisco Bay Area. Both multi-stop and direct flights can be found to your destination and back.

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

Currently, February is the cheapest month in which you can book a flight from Northern Ireland to San Francisco Bay Area (average of £538). Flying from Northern Ireland to San Francisco Bay Area in July is currently the most expensive (average of £803). 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.

In terms of precipitation, rainfall in San Francisco Bay Area ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco Bay Area when rainfall is around 0.0 mm.

If weather is an important factor for your trip to San Francisco Bay Area, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

What is the cheapest month to fly from Northern Ireland to San Francisco Bay Area?

September is one of the best times of the year to fly to San Francisco Bay Area from Northern Ireland. Prices for September average £541 per person but you can even find prices for as low as £387. The most expensive prices can be found in the month of July. Opting for a September flight can save you 33% on your journey compared to booking in July

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

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 Bay Area.

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

Yes. Cheapflights offers flight deals from Northern Ireland to San Francisco Bay Area by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£301+ Cheap Flights from Northern Ireland to San Francisco Bay Area

Cheap flight deals from Northern Ireland to San Francisco Bay Area

Round-trip from	£567
One-way from	£301
Popular in	July
Cheapest in	September
Average price	£521

Air France
22/9-29/9
2 total stops
45h 30m total
Northern Ireland to San Francisco Bay Area

Search Deals

8/9
3 total stops
57h 10m total
Northern Ireland to San Francisco Bay Area

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (£45 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2025

Search Deals

Find flight deals from Northern Ireland to San Francisco Bay Area

Cheapest flights from Northern Ireland to San Francisco Bay Area
Explore the most affordable flight options available from Northern Ireland to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 August 2025.

Mon 22/917:25BHD - SFO

1 stop26h 20mMultiple Airlines

Mon 29/913:45SFO - BHD

1 stop19h 10mMultiple Airlines

Deal found 25/8£567

Mon 22/917:25BHD - SFO

1 stop26h 20mKLM

Mon 29/913:45SFO - BHD

2 stops19h 10mKLM

Deal found 25/8£570

Mon 22/906:45BFS - SFO

2 stops22h 33mMultiple Airlines

Mon 29/914:22SFO - BFS

2 stops24h 48mMultiple Airlines

Deal found 25/8£571

Mon 22/906:30BHD - SFO

2 stops18h 48mDelta

Mon 29/906:45SFO - BHD

2 stops26h 10mDelta

Deal found 25/8£574

Thu 20/1106:15BFS - SFO

3 stops41h 50mMultiple Airlines

Fri 5/1213:00SFO - BFS

3 stops25h 00mMultiple Airlines

Deal found 25/8£581

Mon 22/919:30BHD - SFO

1 stop29h 55mBritish Airways

Mon 29/919:20SFO - BHD

1 stop16h 15mBritish Airways

Deal found 25/8£611

Thu 20/1110:40BHD - SFO

1 stop16h 05mBritish Airways

Fri 5/1220:40SFO - BHD

1 stop14h 35mBritish Airways

Deal found 25/8£624

Fri 10/1009:30BHD - SFO

2 stops21h 00mAmerican Airlines

Fri 17/1011:48SFO - BHD

2 stops19h 42mAmerican Airlines

Deal found 25/8£664

Thu 9/1007:00BFS - SFO

2 stops20h 00mMultiple Airlines

Thu 16/1019:30SFO - BFS

2 stops19h 20mMultiple Airlines

Deal found 25/8£741

Thu 20/1107:25BHD - SFO

3 stops36h 47mMultiple Airlines

Fri 5/1213:00SFO - BHD

2 stops23h 30mMultiple Airlines

Deal found 25/8£756

Fri 10/1007:05BFS - SFO

2 stops16h 50mMultiple Airlines

Fri 17/1017:40SFO - BFS

2 stops19h 20mMultiple Airlines

Deal found 26/8£857

Best flights from Northern Ireland to San Francisco Bay Area
Discover carefully curated flight deals from Northern Ireland to San Francisco Bay Area that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 August 2025.

Mon 22/917:25BHD - SFO

1 stop26h 20mMultiple Airlines

Mon 29/913:45SFO - BHD

1 stop19h 10mMultiple Airlines

Deal found 25/8£567

Mon 22/917:25BHD - SFO

1 stop26h 20mKLM

Mon 29/913:45SFO - BHD

2 stops19h 10mKLM

Deal found 25/8£570

Mon 22/906:30BHD - SFO

2 stops18h 48mDelta

Mon 29/913:45SFO - BHD

1 stop19h 10mDelta

Deal found 25/8£574

Mon 22/919:30BHD - SFO

1 stop29h 55mBritish Airways

Mon 29/919:20SFO - BHD

1 stop16h 15mBritish Airways

Deal found 25/8£611

Fri 10/1009:30BHD - SFO

2 stops21h 00mAmerican Airlines

Fri 17/1011:48SFO - BHD

2 stops19h 42mAmerican Airlines

Deal found 25/8£664

Mon 22/906:45BFS - SFO

2 stops22h 33mMultiple Airlines

Mon 29/914:22SFO - BFS

2 stops24h 48mMultiple Airlines

Deal found 25/8£571

Thu 20/1110:40BHD - SFO

1 stop16h 05mBritish Airways

Fri 5/1220:40SFO - BHD

1 stop14h 35mBritish Airways

Deal found 25/8£624

Thu 20/1106:15BFS - SFO

3 stops41h 50mMultiple Airlines

Fri 5/1213:00SFO - BFS

3 stops25h 00mMultiple Airlines

Deal found 25/8£581

Thu 9/1007:00BFS - SFO

2 stops20h 00mMultiple Airlines

Thu 16/1019:30SFO - BFS

2 stops19h 20mMultiple Airlines

Deal found 25/8£741

Thu 20/1107:25BHD - SFO

3 stops36h 47mMultiple Airlines

Fri 5/1213:00SFO - BHD

2 stops23h 30mMultiple Airlines

Deal found 25/8£756

Fri 10/1007:05BFS - SFO

2 stops16h 50mMultiple Airlines

Fri 17/1017:40SFO - BFS

2 stops19h 20mMultiple Airlines

Deal found 26/8£857

Last-minute flights from Northern Ireland to San Francisco Bay Area
Discover last-minute flight deals from Northern Ireland to San Francisco Bay Area. Data last updated 27 August 2025 and is based on user searches.

Mon 22/917:25BHD - SFO

1 stop26h 20mMultiple Airlines

Mon 29/913:45SFO - BHD

1 stop19h 10mMultiple Airlines

Deal found 25/8£567

Mon 22/917:25BHD - SFO

1 stop26h 20mKLM

Mon 29/913:45SFO - BHD

2 stops19h 10mKLM

Deal found 25/8£570

Mon 22/906:45BFS - SFO

2 stops22h 33mMultiple Airlines

Mon 29/914:22SFO - BFS

2 stops24h 48mMultiple Airlines

Deal found 25/8£571

Mon 22/906:30BHD - SFO

2 stops18h 48mDelta

Mon 29/906:45SFO - BHD

2 stops26h 10mDelta

Deal found 25/8£574

Mon 22/919:30BHD - SFO

1 stop29h 55mBritish Airways

Mon 29/919:20SFO - BHD

1 stop16h 15mBritish Airways

Deal found 25/8£611

One-way flights from Northern Ireland to San Francisco Bay Area
Search for one-way flight options from Northern Ireland to San Francisco Bay Area. Find affordable one-way fares based on user searches. Data last updated 27 August 2025.

Mon 8/913:25BHD - SFO

3 stops57h 10mMultiple Airlines

Deal found 25/8£301

Wed 3/909:05BHD - SFO

3 stops37h 25mMultiple Airlines

Deal found 25/8£320

Wed 10/909:05BHD - SFO

2 stops41h 05mMultiple Airlines

Deal found 25/8£322

Thu 11/920:15BHD - SFO

2 stops45h 35mMultiple Airlines

Deal found 25/8£332

Thu 4/914:25BHD - SFO

3 stops51h 25mMultiple Airlines

Deal found 25/8£338

Mon 15/917:55BHD - SFO

3 stops52h 40mMultiple Airlines

Deal found 25/8£344

Mon 15/920:55BFS - SFO

2 stops49h 40mMultiple Airlines

Deal found 25/8£376

Thu 4/906:10BFS - SFO

2 stops38h 13mMultiple Airlines

Deal found 25/8£685

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Mon 22/9

17:25-11:45

1 stop26h 20m

San Francisco

Mon 29/9

13:45-16:55

1 stop19h 10m

£567

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Mon 22/9

17:25-11:45

1 stop26h 20m

San Francisco

Mon 29/9

13:45-16:55

2 stops19h 10m

£570

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Mon 22/9

06:45-21:18

2 stops22h 33m

San Francisco

Mon 29/9

14:22-23:10

2 stops24h 48m

£571

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Mon 22/9

06:30-17:18

2 stops18h 48m

San Francisco

Mon 29/9

13:45-16:55

1 stop19h 10m

£574

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Thu 20/11

06:15-16:05

3 stops41h 50m

San Francisco

Fri 5/12

13:00-22:00

3 stops25h 00m

£581

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Mon 22/9

19:30-17:25

1 stop29h 55m

San Francisco

Mon 29/9

19:20-19:35

1 stop16h 15m

£611

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 20/11

10:40-18:45

1 stop16h 05m

San Francisco

Fri 5/12

20:40-19:15

1 stop14h 35m

£624

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 10/10

09:30-22:30

2 stops21h 00m

San Francisco

Fri 17/10

11:48-15:30

2 stops19h 42m

£664

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Thu 9/10

07:00-19:00

2 stops20h 00m

San Francisco

Thu 16/10

19:30-22:50

2 stops19h 20m

£741

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 20/11

07:25-12:12

3 stops36h 47m

San Francisco

Fri 5/12

13:00-20:30

2 stops23h 30m

£756

Flights are sorted by cheapest return flights first.

Deals found on 25/8

Showing 1-10 of 19 results

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

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

Cheapflights Insights

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

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

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 Bay Area as you normally would.

Related info for your journey

How long is the flight from Northern Ireland to San Francisco Bay Area?
There are many flights that can get you from Northern Ireland to San Francisco Bay Area in 18h 48m. Fly via KLM, Delta, or British Airways to get the fastest option. There are 5038 mi between Northern Ireland and San Francisco Bay Area. Both multi-stop and direct flights can be found to your destination and back.
Can I find deals for flights from Northern Ireland to San Francisco Bay Area that include hotel bookings?
Yes. In addition to deals on Northern Ireland to San Francisco Bay Area flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Northern Ireland to San Francisco Bay Area?
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 Bay Area.
Can I find deals for business class flights from Northern Ireland to San Francisco Bay Area?
Yes. Cheapflights offers flight deals from Northern Ireland to San Francisco Bay Area 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 Bay Area?
Currently, February is the cheapest month in which you can book a flight from Northern Ireland to San Francisco Bay Area (average of £538). Flying from Northern Ireland to San Francisco Bay Area in July is currently the most expensive (average of £803). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Northern Ireland to San Francisco Bay Area

Heathrow to Los Angeles flights

Heathrow to Las Vegas flights

Heathrow to San Francisco flights

London City to Los Angeles flights

Gatwick to Las Vegas flights

Gatwick to San Francisco flights

London City to Las Vegas flights

Luton to Los Angeles flights

Stansted to Los Angeles flights

London City to San Francisco flights

Gatwick to Los Angeles flights

Heathrow to San Diego flights

Heathrow to Ontario flights

Heathrow to Burbank flights

Heathrow to San Jose flights

Heathrow to Long Beach flights

Heathrow to Santa Ana flights

Heathrow to Oakland flights

Manchester to Las Vegas flights

Stansted to San Francisco flights

Gatwick to San Jose flights

Stansted to Las Vegas flights

Luton to San Francisco flights

Gatwick to Oakland flights

Gatwick to Burbank flights

Luton to Las Vegas flights

Gatwick to Santa Ana flights

Manchester to Los Angeles flights

Southend to Los Angeles flights

Manchester to San Francisco flights

Gatwick to San Diego flights

Birmingham to Los Angeles flights

London City to San Diego flights

London City to Oakland flights

Edinburgh to Los Angeles flights

Gatwick to Ontario flights

Heathrow to Sacramento flights

Glasgow Intl to Los Angeles flights

Manchester to Santa Ana flights

Newcastle upon Tyne to Los Angeles flights

Manchester to San Jose flights

Edinburgh to San Francisco flights

Glasgow Intl to Las Vegas flights

Manchester to Oakland flights

Edinburgh to Las Vegas flights

Gatwick to Sacramento flights

Manchester to Burbank flights

London City to Santa Ana flights

Edinburgh to Ontario flights

Manchester to Ontario flights

Complete your trip

California car hire

Los Angeles Airport car hire

San Francisco Airport car hire

San Diego Airport car hire

San Jose Airport car hire

Sacramento Intl Airport car hire

Ontario Airport car hire

Oakland Airport car hire

Burbank Bob Hope Airport car hire

Long Beach Municipal Airport car hire

Palm Springs Airport car hire

Fresno Airterminal Airport car hire

Direct flights to United States

Top 2 airlines flying from Northern Ireland to San Francisco Bay Area

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£405	Average£567	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
American Airlines	Cheapest£470	Average£521	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from Northern Ireland to San Francisco Bay Area?

Deals for Northern Ireland to San Francisco Bay Area flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Northern Ireland to San Francisco Bay Area?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Northern Ireland to San Francisco Bay Area.

Can Cheapflights find flights from Northern Ireland to San Francisco Bay Area with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Northern Ireland to San Francisco Bay Area, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Northern Ireland to San Francisco Bay Area become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Francisco Bay Area from Northern Ireland today and book when prices fit your budget.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Northern Ireland to San Francisco Bay Area from £301

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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Northern Ireland to San Francisco Bay Area

Keep the following information in mind while searching for Northern Ireland to San Francisco Bay Area flight deals. Data was last updated 27 August 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Northern Ireland to San Francisco Bay Area

Cheapest flights from Northern Ireland to San Francisco Bay AreaExplore the most affordable flight options available from Northern Ireland to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 August 2025.

Explore the most affordable flight options available from Northern Ireland to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 August 2025.

Cheapflights Fare Finder

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

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

Have a flexible travel schedule? Discover the best time to fly to San Francisco Bay Area from Northern Ireland with our price prediction graph.

Cheapflights Insights

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

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

Find hourly flight availability from Northern Ireland to San Francisco Bay Area. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 27 August 2025.

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland to San Francisco Bay Area. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Northern Ireland to San Francisco Bay Area

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Northern Ireland to San Francisco Bay Area

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Northern Ireland to San Francisco Bay Area?

Why should you use Cheapflights to find cheap flight tickets from Northern Ireland to San Francisco Bay Area?

Can Cheapflights find flights from Northern Ireland to San Francisco Bay Area with no change fees?

Can Cheapflights notify me if prices for flights from Northern Ireland to San Francisco Bay Area become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Northern Ireland to San Francisco Bay Area
Explore the most affordable flight options available from Northern Ireland to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 August 2025.