In terms of precipitation, rainfall in Northern Ireland ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Northern Ireland when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Northern Ireland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

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

October is one of the best times of the year to fly to Northern Ireland from San Francisco Bay Area. Prices for October average £671 per person but you can even find prices for as low as £407. The most expensive prices can be found in the month of January. Opting for a October flight can save you 45% on your journey compared to booking in January

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

When flying from San Francisco Bay Area to Northern Ireland, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

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

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

£266+ Flights from San Francisco Bay Area to Northern Ireland

Cheap flight deals from San Francisco Bay Area to Northern Ireland

Round-trip from	£455
One-way from	£266
Popular in	January
Cheapest in	October
Average price	£831

British Airways
15/10-21/10
2 total stops
36h 15m total
San Francisco Bay Area to Northern Ireland

Search Deals

25/7
2 total stops
56h 07m total
San Francisco Bay Area to Northern Ireland

Search Deals

Highest demand for flights based on searches. 13% potential increase in price (£73 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

Find flight deals from San Francisco Bay Area to Northern Ireland

Cheapest flights from San Francisco Bay Area to Northern Ireland
Explore the most affordable flight options available from San Francisco Bay Area to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 July 2025.

Wed 15/1019:20SFO - BHD

1 stop17h 25mBritish Airways

Tue 21/1006:35BHD - SFO

1 stop18h 50mBritish Airways

Deal found 30/6£455

Wed 1/1016:52SFO - BHD

2 stops17h 48mAmerican Airlines

Wed 8/1011:30BHD - SFO

1 stop13h 55mAmerican Airlines

Deal found 30/6£464

Wed 1/1006:15OAK - BHD

2 stops23h 15mMultiple Airlines

Wed 8/1006:50BHD - OAK

2 stops25h 09mMultiple Airlines

Deal found 30/6£472

Tue 29/706:00SJC - BHD

2 stops23h 00mBritish Airways

Tue 5/820:20BHD - SJC

2 stops54h 10mBritish Airways

Deal found 29/6£510

Sun 19/1013:59SFO - BHD

2 stops18h 56mDelta

Fri 31/1006:30BHD - SFO

2 stops20h 00mDelta

Deal found 29/6£529

Sun 19/1013:45SFO - BHD

1 stop19h 10mMultiple Airlines

Sat 1/1106:30BHD - SFO

2 stops21h 07mMultiple Airlines

Deal found 29/6£547

Wed 29/1005:55OAK - BHD

2 stops27h 55mDelta

Sun 2/1117:20BHD - OAK

2 stops31h 11mDelta

Deal found 30/6£550

Wed 8/1013:15SJC - BHD

2 stops19h 40mDelta

Sun 12/1006:30BHD - SJC

2 stops18h 30mDelta

Deal found 28/6£550

Mon 20/1013:59SFO - BHD

2 stops18h 56mKLM

Sat 1/1106:30BHD - SFO

2 stops21h 07mKLM

Deal found 29/6£550

Wed 8/1011:28SJC - BHD

2 stops25h 47mKLM

Sun 12/1017:25BHD - SJC

2 stops36h 21mKLM

Deal found 30/6£588

Wed 13/808:30SFO - BFS

3 stops23h 40mMultiple Airlines

Wed 20/815:05BFS - SFO

2 stops33h 05mMultiple Airlines

Deal found 29/6£616

Wed 3/1211:05SFO - BHD

2 stops21h 45mVirgin Atlantic

Sun 7/1206:30BHD - SFO

1 stop13h 20mVirgin Atlantic

Deal found 29/6£616

Best flights from San Francisco Bay Area to Northern Ireland
Discover carefully curated flight deals from San Francisco Bay Area to Northern Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 July 2025.

Wed 15/1019:20SFO - BHD

1 stop17h 25mBritish Airways

Tue 21/1006:35BHD - SFO

1 stop18h 50mBritish Airways

Deal found 30/6£455

Wed 1/1016:52SFO - BHD

2 stops17h 48mAmerican Airlines

Wed 8/1011:30BHD - SFO

1 stop13h 55mAmerican Airlines

Deal found 30/6£464

Wed 1/1006:15OAK - BHD

2 stops23h 15mMultiple Airlines

Wed 8/1006:50BHD - OAK

2 stops25h 09mMultiple Airlines

Deal found 30/6£472

Sun 19/1013:59SFO - BHD

2 stops18h 56mDelta

Fri 31/1006:30BHD - SFO

2 stops20h 00mDelta

Deal found 29/6£529

Mon 20/1013:59SFO - BHD

2 stops18h 56mKLM

Sat 1/1106:30BHD - SFO

2 stops21h 07mKLM

Deal found 29/6£550

Wed 3/1211:05SFO - BHD

2 stops21h 45mVirgin Atlantic

Sun 7/1206:30BHD - SFO

1 stop13h 20mVirgin Atlantic

Deal found 29/6£616

Tue 29/706:00SJC - BHD

2 stops23h 00mBritish Airways

Tue 5/820:20BHD - SJC

2 stops54h 10mBritish Airways

Deal found 29/6£510

Sun 19/1013:45SFO - BHD

1 stop19h 10mMultiple Airlines

Sat 1/1106:30BHD - SFO

2 stops21h 07mMultiple Airlines

Deal found 29/6£547

Wed 29/1005:55OAK - BHD

2 stops27h 55mDelta

Sun 2/1117:20BHD - OAK

2 stops31h 11mDelta

Deal found 30/6£550

Wed 8/1011:28SJC - BHD

2 stops25h 47mKLM

Sun 12/1017:25BHD - SJC

2 stops36h 21mKLM

Deal found 30/6£588

Wed 8/1013:15SJC - BHD

2 stops19h 40mDelta

Sun 12/1006:30BHD - SJC

2 stops18h 30mDelta

Deal found 28/6£550

Wed 13/808:30SFO - BFS

3 stops23h 40mMultiple Airlines

Wed 20/815:05BFS - SFO

2 stops33h 05mMultiple Airlines

Deal found 29/6£616

Last-minute flights from San Francisco Bay Area to Northern Ireland
Discover last-minute flight deals from San Francisco Bay Area to Northern Ireland. Data last updated 1 July 2025 and is based on user searches.

Thu 17/714:38OAK - BHD

2 stops20h 42mBritish Airways

Mon 21/719:30BHD - OAK

2 stops34h 36mBritish Airways

Deal found 1/7£1,327

Thu 17/708:00OAK - BHD

2 stops28h 45mMultiple Airlines

Mon 21/714:25BHD - OAK

3 stops39h 41mMultiple Airlines

Deal found 1/7£1,388

Tue 29/706:00SJC - BHD

2 stops23h 00mBritish Airways

Tue 5/820:20BHD - SJC

2 stops54h 10mBritish Airways

Deal found 29/6£510

Thu 7/800:45SFO - BHD

2 stops24h 40mMultiple Airlines

Tue 19/813:40BHD - SFO

2 stops17h 27mMultiple Airlines

Deal found 29/6£719

Thu 7/806:30SJC - BFS

3 stops30h 05mMultiple Airlines

Thu 14/807:30BFS - SJC

3 stops36h 14mMultiple Airlines

Deal found 28/6£821

Fri 8/816:30SFO - BHD

1 stop17h 45mBritish Airways

Tue 19/813:40BHD - SFO

2 stops17h 27mBritish Airways

Deal found 29/6£482

Wed 13/808:30SFO - BFS

3 stops23h 40mMultiple Airlines

Wed 20/815:05BFS - SFO

2 stops33h 05mMultiple Airlines

Deal found 29/6£616

Thu 14/814:45SFO - CAL

3 stops18h 30mMultiple Airlines

Thu 21/809:05CAL - SFO

3 stops21h 18mMultiple Airlines

Deal found 30/6£1,329

One-way flights from San Francisco Bay Area to Northern Ireland
Search for one-way flight options from San Francisco Bay Area to Northern Ireland. Find affordable one-way fares based on user searches. Data last updated 1 July 2025.

Fri 25/716:03SFO - BHD

2 stops56h 07mMultiple Airlines

Deal found 29/6£266

Fri 25/719:20SFO - BHD

1 stop17h 25mBritish Airways

Deal found 29/6£299

Fri 25/723:24SJC - BHD

2 stops25h 56mBritish Airways

Deal found 29/6£307

Fri 25/709:28OAK - BHD

2 stops15h 57mBritish Airways

Deal found 29/6£715

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 15/10

19:20-20:45

1 stop17h 25m

Belfast City

Tue 21/10

06:35-17:25

1 stop18h 50m

£455

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 1/10

16:52-18:40

2 stops17h 48m

Belfast City

Wed 8/10

11:30-17:25

1 stop13h 55m

£464

OaklandBelfast

OAK - BHD

OAKBHD

Oakland

Wed 1/10

06:15-13:30

2 stops23h 15m

Belfast City

Wed 8/10

06:50-23:59

2 stops25h 09m

£472

San JoseBelfast

SJC - BHD

SJCBHD

San Jose

Tue 29/7

06:00-13:00

2 stops23h 00m

Belfast City

Tue 5/8

20:20-18:30

2 stops54h 10m

£510

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 19/10

13:59-16:55

2 stops18h 56m

Belfast City

Fri 31/10

06:30-19:30

2 stops20h 00m

£529

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 19/10

13:45-16:55

1 stop19h 10m

Belfast City

Sat 1/11

06:30-20:37

2 stops21h 07m

£547

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 20/10

13:59-16:55

2 stops18h 56m

Belfast City

Sat 1/11

06:30-20:37

2 stops21h 07m

£550

OaklandBelfast

OAK - BHD

OAKBHD

Oakland

Wed 29/10

05:55-16:50

2 stops27h 55m

Belfast City

Sun 2/11

17:20-16:31

2 stops31h 11m

£550

San JoseBelfast

SJC - BHD

SJCBHD

San Jose

Wed 8/10

13:15-16:55

2 stops19h 40m

Belfast City

Sun 12/10

06:30-17:00

2 stops18h 30m

£550

San JoseBelfast

SJC - BHD

SJCBHD

San Jose

Wed 8/10

13:15-21:15

2 stops24h 00m

Belfast City

Sun 12/10

17:25-21:46

2 stops36h 21m

£588

Flights are sorted by cheapest return flights first.

Deals found on 29/6

Showing 1-10 of 19 results

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

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

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

Currently, January is the cheapest month in which you can book a flight from San Francisco Bay Area to Northern Ireland (average of £67). Flying from San Francisco Bay Area to Northern Ireland in July is currently the most expensive (average of £90). 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.

Reviews of airlines servicing Northern Ireland

Check out reviews from past customers who have flown with Delta, KLM, andVirgin Atlantic from San Francisco Bay Area to Northern Ireland to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

7,973 reviews

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,366 reviews

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Virgin Atlantic

7.4

Good

654 reviews

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

British Airways

6.6

Okay

7,086 reviews

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Can I find deals for flights from San Francisco Bay Area to Northern Ireland that include hotel bookings?
Yes. In addition to deals on San Francisco Bay Area to Northern Ireland flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from San Francisco Bay Area to Northern Ireland?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco Bay Area to Northern Ireland.
Can I find deals for business class flights from San Francisco Bay Area to Northern Ireland?
Yes. Cheapflights offers flight deals from San Francisco Bay Area to Northern Ireland 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 San Francisco Bay Area to Northern Ireland?
Currently, January is the cheapest month in which you can book a flight from San Francisco Bay Area to Northern Ireland (average of £67). Flying from San Francisco Bay Area to Northern Ireland in July is currently the most expensive (average of £90). 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

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

Deals for San Francisco Bay Area to Northern Ireland 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 San Francisco Bay Area to Northern Ireland?

Millions of users choose and trust Cheapflights to book the best flight deals from San Francisco Bay Area to Northern Ireland for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Need flexible booking options for your flight to Northern Ireland from San Francisco Bay Area? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes, Cheapflights offers price alerts on San Francisco Bay Area to Northern Ireland flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from San Francisco Bay Area to Northern Ireland from £266

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 25/7. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from San Francisco Bay Area to Northern Ireland

Keep the following information in mind while searching for San Francisco Bay Area to Northern Ireland flight deals. Data was last updated 1 July 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from San Francisco Bay Area to Northern Ireland

Cheapest flights from San Francisco Bay Area to Northern IrelandExplore the most affordable flight options available from San Francisco Bay Area to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 July 2025.

Explore the most affordable flight options available from San Francisco Bay Area to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 July 2025.

Cheapflights Fare Finder

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

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

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

Cheapflights Insights

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

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

Reviews of airlines servicing Northern Ireland

Check out reviews from past customers who have flown with Delta, KLM, andVirgin Atlantic from San Francisco Bay Area to Northern Ireland to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

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

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

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

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 San Francisco Bay Area to Northern Ireland

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

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 San Francisco Bay Area to Northern Ireland?

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

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

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

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Cheapest flights from San Francisco Bay Area to Northern Ireland
Explore the most affordable flight options available from San Francisco Bay Area to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 July 2025.