Cheap flights from Northern Ireland to San Francisco Bay Area from £574
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/11. 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 10 October 2025.
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 10 October 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 10 October 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.
Fly from
Fly to
Route
Depart
Return
Price
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Wed 5/11
06:30-11:50
1 stop13h 20m
San Francisco
Wed 12/11
11:50-16:50
2 stops21h 00m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Wed 5/11
06:30-11:50
1 stop13h 20m
San Francisco
Wed 12/11
09:00-16:50
2 stops23h 50m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Thu 5/3
09:05-18:45
1 stop17h 40m
San Francisco
Mon 9/3
07:26-10:40
2 stops20h 14m
BelfastSan Francisco
BFS - SFO
BFSSFO
Belfast Intl
Sun 23/11
16:45-14:35
2 stops29h 50m
San Francisco
Sun 30/11
16:40-22:25
2 stops21h 45m
BelfastSan Francisco
BFS - SFO
BFSSFO
Belfast Intl
Tue 31/3
14:50-20:50
1 stop38h 00m
San Francisco
Sun 19/4
13:00-18:50
2 stops21h 50m
BelfastSan Francisco
BFS - SFO
BFSSFO
Belfast Intl
Sun 5/4
06:10-18:00
1 stop19h 50m
San Francisco
Tue 21/4
06:30-09:55
2 stops19h 25m
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 10 October 2025.
It’s typically best to fly out from Northern Ireland to San Francisco Bay Area in the afternoon. Doing so could potentially save you 8% on the flight price compared to flying at midday, which is usually more expensive.
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.
Browse thousands of different options on Cheapflights for your next trip
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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
Discover the top 2 airlines that operate flights from Northern Ireland to San Francisco Bay Area. 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 10 October 2025.
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?
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.