Cheap flights from San Francisco Bay Area to Northern Ireland from £483
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/3. 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 30 October 2025.
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 30 October 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 30 October 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.
Fly from
Fly to
Route
Depart
Return
Price
San FranciscoBelfast
SFO - BHD
SFOBHD
San Francisco
Tue 24/3
18:30-18:40
1 stop17h 10m
Belfast City
Tue 31/3
06:35-13:50
1 stop15h 15m
San FranciscoBelfast
SFO - BHD
SFOBHD
San Francisco
Tue 24/3
10:24-11:30
2 stops18h 06m
Belfast City
Tue 31/3
06:35-18:42
2 stops20h 07m
San FranciscoBelfast
SFO - BHD
SFOBHD
San Francisco
Sun 7/12
08:00-10:20
2 stops18h 20m
Belfast City
Sun 14/12
09:10-15:00
1 stop13h 50m
San FranciscoBelfast
SFO - BHD
SFOBHD
San Francisco
Wed 3/12
13:55-21:00
1 stop23h 05m
Belfast City
Sun 7/12
06:30-11:50
1 stop13h 20m
San FranciscoBelfast
SFO - BHD
SFOBHD
San Francisco
Tue 25/11
15:30-16:45
2 stops17h 15m
Belfast City
Tue 2/12
06:35-18:24
2 stops19h 49m
OaklandBelfast
OAK - BHD
OAKBHD
Oakland
Thu 13/11
05:55-16:50
2 stops26h 55m
Belfast City
Mon 17/11
17:20-16:11
2 stops30h 51m
San JoseBelfast
SJC - BHD
SJCBHD
San Jose
Wed 12/11
09:40-16:50
2 stops23h 10m
Belfast City
Sun 16/11
17:20-22:56
2 stops37h 36m
San JoseBelfast
SJC - BHD
SJCBHD
San Jose
Thu 2/4
09:05-21:20
2 stops28h 15m
Belfast City
Mon 6/4
17:25-21:49
2 stops36h 24m
San JoseBelfast
SJC - BHD
SJCBHD
San Jose
Wed 12/11
09:03-16:50
2 stops23h 47m
Belfast City
Sun 16/11
17:20-19:22
2 stops34h 02m
San JoseBelfast
SJC - BHD
SJCBHD
San Jose
Thu 2/4
09:05-16:55
2 stops23h 50m
Belfast City
Mon 6/4
17:25-21:06
2 stops35h 41m
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?
Currently, April is the cheapest month in which you can book a flight from San Francisco Bay Area to Northern Ireland (average of £444). Flying from San Francisco Bay Area to Northern Ireland in January is currently the most expensive (average of £1,013). 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.
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.
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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.
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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.