Cheap flights from Belfast Intl Airport to San Francisco Bay Area from £404
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 17/8. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Belfast Intl to San Francisco Bay Area
Keep the following information in mind while searching for Belfast Intl to San Francisco Bay Area flight deals. Data was last updated 4 July 2025.
Find flight deals from Belfast Intl to San Francisco Bay Area
Cheapest flights from Belfast Intl to San Francisco Bay AreaExplore the most affordable flight options available from Belfast Intl to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.
Explore the most affordable flight options available from Belfast Intl to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from Belfast Intl to San Francisco Bay Area that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 4 July 2025.
Use the filters below to find and compare flights from Belfast Intl Airport to San Francisco Bay Area that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
BelfastSan Francisco
BFS - SFO
BFSSFO
Belfast Intl
Mon 25/8
06:45-19:30
1 stop20h 45m
San Francisco
Tue 2/9
21:20-23:10
1 stop17h 50m
BelfastSan Francisco
BFS - SFO
BFSSFO
Belfast Intl
Sun 17/8
06:45-13:59
3 stops39h 14m
Best time to book a flight from Belfast Intl to San Francisco Bay Area
Have a flexible travel schedule? Discover the best time to fly to San Francisco Bay Area from Belfast Intl with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Belfast Intl Airport to San Francisco Bay Area
What is the cheapest month to book a flight from Belfast Intl Airport to San Francisco Bay Area?
Currently, February is the cheapest month in which you can book a flight from Belfast Intl Airport to San Francisco Bay Area (average of £538). Flying from Belfast Intl Airport 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.
What is the cheapest time of day to fly from BFS to XIH?
Find hourly flight availability from Belfast Intl 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 4 July 2025.
When flying from Belfast Intl Airport to San Francisco Bay Area, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Related info for your journey
Find useful and relevant information for your journey from Belfast Intl 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 Belfast Intl 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 Belfast Intl to San Francisco Bay Area
Discover the top 2 airlines that operate flights from Belfast Intl 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 4 July 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 Belfast Intl to San Francisco Bay Area?
Deals for Belfast Intl 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 Belfast Intl to San Francisco Bay Area?
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 Bay Area from Belfast Intl.
Can Cheapflights find flights from Belfast Intl to San Francisco Bay Area with no change fees?
Certainly. Search results for flights to San Francisco Bay Area from Belfast Intl 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 Belfast Intl to San Francisco Bay Area become cheaper?
Yes, Cheapflights offers price alerts on Belfast Intl to San Francisco Bay Area 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.