Cheap flights from Northern Ireland to San Francisco from £341
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 5/8. 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 18 April 2025.
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 18 April 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 18 April 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from Northern Ireland to San Francisco 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 18 April 2025.
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
Wed 20/8
06:50-13:50
1 stop15h 00m
San Francisco
Fri 5/9
16:35-15:30
1 stop14h 55m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Wed 20/8
06:30-11:45
1 stop13h 15m
San Francisco
Fri 5/9
11:05-16:55
2 stops21h 50m
BelfastSan Francisco
BFS - SFO
BFSSFO
Belfast Intl
Sat 17/5
16:50-20:50
2 stops36h 00m
San Francisco
Sat 24/5
07:30-17:10
3 stops25h 40m
BelfastSan Francisco
BFS - SFO
BFSSFO
Belfast Intl
Tue 5/8
05:55-13:59
3 stops40h 04m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Tue 5/8
07:05-12:23
2 stops37h 18m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Mon 21/7
18:45-15:55
2 stops29h 10m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Mon 21/7
06:40-13:50
1 stop15h 10m
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 month to book a flight from Northern Ireland to San Francisco?
Currently, February is the cheapest month in which you can book a flight from Northern Ireland to San Francisco (average of £538). Flying from Northern Ireland to San Francisco 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 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 18 April 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.
Rainfall in San Francisco by month
Plan your trip to San Francisco by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.
Temperature in San Francisco by month
Plan your trip to San Francisco by taking into account the average temperature totals by month.
If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).
Reviews of airlines servicing San Francisco
Get insights into the airlines that provide service to San Francisco. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco. Reviews last updated 18 April 2025.
Get a feel of what it's like to fly with Delta, Aer Lingus and British Airways from Northern Ireland to San Francisco by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
Entertainment
Overall
Comfort
Food
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
Crew
Entertainment
Overall
Comfort
Food
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
Crew
Entertainment
Overall
Comfort
Food
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
Crew
Entertainment
Overall
Comfort
Food
Boarding
Reviews
Aaron,Oct 2024
TUS - LAX
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 Northern Ireland?
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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 airline flying from Northern Ireland to San Francisco
Discover the top airline 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 18 April 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?
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.