$655 Find Cheap Flights from Belfast to San Francisco

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Belfast to San Francisco departing on 8/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Francisco

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Belfast to San Francisco, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Belfast to San Francisco, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$871
British Airways
Tue 7/28Wed 8/19
BHD - SFO • 1 stop
Cheapest one-way
$655
Multiple Airlines
Sat 8/8
BFS - SFO • 3 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Francisco!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Belfast to San Francisco

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Belfast to San Francisco that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Belfast to San Francisco

Tue, Jul 28 - Wed, Aug 19
British Airways Logo
7:30 pm - 1:50 pm
BHD
-
SFO
26h 20m
1 stop
British Airways Logo
7:30 pm - 6:45 pm
SFO
-
BHD
15h 15m
1 stop
$871British Airways
Tue, Jul 28 - Wed, Aug 19
Multiple Airlines Logo
6:30 am - 12:59 am
BHD
-
SFO
26h 29m
2 stops
Multiple Airlines Logo
9:46 am - 3:40 pm
SFO
-
BHD
21h 54m
2 stops
$876Multiple Airlines
Wed, Sep 2 - Thu, Sep 24
American Airlines Logo
6:30 am - 1:50 pm
BHD
-
SFO
15h 20m
1 stop
American Airlines Logo
7:30 pm - 7:25 pm
SFO
-
BHD
15h 55m
1 stop
$897American Airlines
Tue, Jul 28 - Wed, Aug 19
British Airways Logo
8:25 pm - 1:50 pm
BHD
-
SFO
25h 25m
1 stop
British Airways Logo
2:41 pm - 3:40 pm
SFO
-
BHD
16h 59m
2 stops
$898British Airways
Tue, Sep 1 - Fri, Sep 25
British Airways Logo
8:25 pm - 1:50 pm
BHD
-
SFO
25h 25m
1 stop
British Airways Logo
4:21 pm - 6:10 pm
SFO
-
BHD
17h 49m
2 stops
$900British Airways
Sun, Jul 26 - Mon, Aug 17
British Airways Logo
1:10 pm - 1:50 pm
BHD
-
SFO
32h 40m
1 stop
British Airways Logo
3:46 pm - 7:25 pm
SFO
-
BHD
19h 39m
2 stops
$901British Airways
Mon, Jul 27 - Wed, Aug 19
American Airlines Logo
6:30 am - 12:59 am
BHD
-
SFO
26h 29m
2 stops
American Airlines Logo
2:41 pm - 6:45 pm
SFO
-
BHD
20h 04m
2 stops
$902American Airlines
Mon, Aug 31 - Thu, Sep 24
KLM Logo
9:50 am - 11:45 am
BHD
-
SFO
33h 55m
1 stop
KLM Logo
1:00 pm - 4:55 pm
SFO
-
BHD
19h 55m
2 stops
$904KLM
Tue, Sep 1 - Wed, Sep 23
American Airlines Logo
9:40 am - 1:50 pm
BHD
-
SFO
36h 10m
1 stop
American Airlines Logo
11:15 am - 1:35 pm
SFO
-
BHD
18h 20m
2 stops
$908American Airlines
Wed, Sep 2 - Thu, Sep 24
KLM Logo
9:50 am - 9:35 pm
BHD
-
SFO
19h 45m
2 stops
KLM Logo
1:00 pm - 4:55 pm
SFO
-
BHD
19h 55m
2 stops
$909KLM
Booking Insights

KAYAK's insights & trends for Belfast to San Francisco flights

Get data-powered insights and trends into flights from Belfast to San Francisco to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Belfast to San Francisco?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Belfast to San Francisco departing in July.

What is the cheapest month to fly from Belfast to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Belfast to San Francisco, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Belfast to San Francisco is January, where tickets cost $0 (return) on average. On the other hand, the most expensive months are March and February, where the average cost of round-trip tickets is $1,697 and $1,190 respectively.

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Good to know

Cheapest flight$655
Flight from Belfast Intl Airport to San Francisco

When to book flights from Belfast to San Francisco

Are your dates flexible? Find out the best times to travel from Belfast to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Belfast to San Francisco

  • What is the cheapest flight from Belfast to San Francisco?

    In the last 3 days, the lowest price for a flight from Belfast to San Francisco was $655 for a one-way ticket and $871 for a round-trip.

  • Do I need a passport to fly between Belfast and San Francisco?

    Yes

  • Which airports will I be using when flying from Belfast to San Francisco?

    Belfast has 2 major airports: Belfast Intl and Belfast City. San Francisco is the only airport in San Francisco. You’ll usually find the cheapest deals if you fly from Belfast City Airport.

  • Which aircraft models fly most regularly from Belfast to San Francisco?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Belfast to San Francisco?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Belfast to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Belfast to San Francisco?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Belfast is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Belfast to San Francisco?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back to Belfast with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Belfast to San Francisco?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from Belfast up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Belfast to San Francisco

Information on your arrival and departure airports

San Francisco (SFO)