Cheap flights from Northern Ireland to San Francisco from £300
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 5/9. 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
Keep the following information in mind while searching for Northern Ireland to San Francisco flight deals. Data was last updated 29 August 2025.
Round-trip from | £705 |
---|---|
One-way from | £300 |
Popular in | July |
Cheapest in | September |
Average price | £520 |
Find 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 29 August 2025.
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 29 August 2025.
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
Sun 21/12
17:20-18:37
2 stops33h 17m
San Francisco
Tue 13/1
06:00-16:50
2 stops26h 50m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Sun 21/12
06:30-15:00
1 stop16h 30m
San Francisco
Tue 13/1
17:30-16:45
1 stop15h 15m
BelfastSan Francisco
BFS - SFO
BFSSFO
Belfast Intl
Sat 11/10
12:35-10:35
2 stops30h 00m
San Francisco
Sat 18/10
12:50-19:05
2 stops22h 15m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Sun 14/9
17:25-11:45
1 stop26h 20m
San Francisco
Thu 18/9
13:45-21:15
1 stop23h 30m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Sun 14/9
17:25-11:45
1 stop26h 20m
San Francisco
Thu 18/9
10:30-16:55
2 stops22h 25m
BelfastSan Francisco
BFS - SFO
BFSSFO
Belfast Intl
Fri 5/9
06:05-22:30
3 stops48h 25m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Fri 5/9
07:00-22:30
3 stops47h 30m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Mon 8/9
18:50-15:55
2 stops29h 05m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Sun 14/9
07:05-23:02
3 stops47h 57m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Sun 14/9
18:15-15:55
2 stops29h 40m
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
What is the cheapest time of day to fly from NIR to SFO?
Find hourly flight availability from Northern Ireland to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 August 2025.
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.
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.
Travelling to a place near San Francisco?
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Alternative routes for Northern Ireland to San Francisco
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
Discover the top 2 airlines that operate flights from Northern Ireland to San Francisco. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 29 August 2025.
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How does Cheapflights help users find flights from Northern Ireland to San Francisco?
When you search for this flight from Northern Ireland to San Francisco, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Northern Ireland to San Francisco?
By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to San Francisco from Northern Ireland.
Can Cheapflights find flights from Northern Ireland to San Francisco with no change fees?
Certainly. Search results for flights to San Francisco from Northern Ireland shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
Can Cheapflights notify me if prices for flights from Northern Ireland to San Francisco become cheaper?
Yes, Cheapflights offers price alerts on Northern Ireland to San Francisco 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.