$589+ Cheap flights from Northern Ireland to San Francisco (SFO)
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 7/20. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Northern Ireland to San Francisco with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 junio 12, 2025.
Round-trip from | $603 (Expedia) |
|---|---|
One-way from | $589 (Kiwi.com) |
Popular in | December |
Cheapest in | April |
Average price | $883 |
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 junio 12, 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 junio 12, 2025.
This Expedia deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Expedia deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This TravelUp deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Trip.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Finnair deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
Customize 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 2,558,603 searches. Data last updated junio 12, 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
vie. 9/12
7:30 pm-1:50 pm
1 stop26h 20m
San Francisco
vie. 9/19
10:30 pm-10:10 am
2 stops27h 40m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
vie. 9/12
8:05 pm-6:35 pm
2 stops30h 30m
San Francisco
vie. 9/19
10:30 pm-10:10 am
2 stops27h 40m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
vie. 9/12
6:30 am-11:45 am
1 stop13h 15m
San Francisco
vie. 9/19
1:45 pm-9:15 pm
1 stop23h 30m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
mié. 8/20
6:30 am-5:59 pm
2 stops19h 29m
San Francisco
vie. 9/5
1:45 pm-9:15 pm
1 stop23h 30m
BelfastSan Francisco
BFS - SFO
BFSSFO
Belfast Intl
vie. 9/12
6:05 am-7:30 pm
1 stop21h 25m
San Francisco
vie. 9/19
4:05 pm-9:25 am
1 stop33h 20m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
mié. 8/20
4:05 pm-10:57 pm
2 stops38h 52m
San Francisco
vie. 9/5
10:22 am-10:10 am
2 stops39h 48m
BelfastSan Francisco
BFS - SFO
BFSSFO
Belfast Intl
dom. 7/20
10:55 pm-9:30 am
3 stops42h 35m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
dom. 7/20
6:50 pm-9:25 pm
2 stops34h 35m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
lun. 7/21
6:25 pm-8:55 pm
2 stops34h 30m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
lun. 7/21
5:25 pm-11:45 am
1 stop26h 20m
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, January is the cheapest month in which you can book a flight from Northern Ireland to San Francisco (average of $276). Flying from Northern Ireland to San Francisco in June is currently the most expensive (average of $364). 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.
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 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.
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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).
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 junio 12, 2025.
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Aaron,Oct 2024
TUS - LAX
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Aaron,Oct 2024
TUS - LAX
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Aaron,Oct 2024
TUS - LAX
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Aaron,Oct 2024
TUS - LAX
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Aaron,Oct 2024
TUS - LAX