$668 Find Cheap Flights from San Francisco to Northern Ireland

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Northern Ireland departing on 5/3. 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.
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KAYAK searches hundreds of travel sites at once for deals on flights to Northern Ireland

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Northern Ireland, 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 San Francisco to Northern Ireland, as well as popular online travel agencies
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Flights Deals

Best Northern Ireland Flight Deals from San Francisco

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Belfast
Belfast1 stop$668
Belfast
Belfast1 stop$668

Cheap Flights from San Francisco to Northern Ireland

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to Northern Ireland 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.

Recent round-trip flight deals from San Francisco to Northern Ireland

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from San Francisco to Northern Ireland.
Discover the best prices for you by selecting your travel dates on KAYAK.
British Airways Logo
7:20 pm - 6:40 pmSFO-BHD
15h 20m1 stop
British Airways Logo
6:30 pm - 1:50 pmBHD-SFO
27h 20m1 stop
$668British Airways
Find Deal
Wed, Oct 1 - Mon, Oct 13
British Airways Logo
2:37 pm - 3:35 pmSFO-BHD
16h 58m2 stops
British Airways Logo
7:30 pm - 8:20 pmBHD-SFO
32h 50m2 stops
$681British Airways
Find Deal
Wed, Oct 1 - Mon, Oct 13
American Airlines Logo
10:16 am - 11:55 amSFO-BHD
17h 39m2 stops
American Airlines Logo
6:40 am - 1:50 pmBHD-SFO
15h 10m1 stop
$701American Airlines
Find Deal
Wed, Oct 1 - Mon, Oct 13
British Airways Logo
7:20 pm - 8:45 pmSFO-BHD
17h 25m1 stop
British Airways Logo
7:30 pm - 1:50 pmBHD-SFO
26h 20m1 stop
$862British Airways
Find Deal
Thu, Jul 24 - Mon, Jul 28
British Airways Logo
6:16 am - 11:10 amSFO-BHD
20h 54m2 stops
British Airways Logo
6:30 pm - 8:26 pmBHD-SFO
33h 56m2 stops
$871British Airways
Find Deal
Thu, Jul 24 - Mon, Jul 28
American Airlines Logo
9:10 am - 11:55 amSFO-BHD
18h 45m2 stops
American Airlines Logo
6:35 am - 1:50 pmBHD-SFO
15h 15m1 stop
$1,150American Airlines
Find Deal
Wed, Jun 11 - Fri, Jun 20
 Logo
7:20 pm - 6:40 pmSFO-BHD
15h 20m1 stop
 Logo
4:15 pm - 8:20 pmBHD-SFO
36h 05m2 stops
$1,188
Find Deal
Wed, Jul 9 - Sat, Jul 19
 Logo
10:14 am - 11:55 amSFO-BHD
17h 41m2 stops
 Logo
4:15 pm - 8:20 pmBHD-SFO
36h 05m2 stops
$1,193
Find Deal
Wed, Jul 9 - Sat, Jul 19
KLM Logo
1:45 pm - 9:15 pmSFO-BHD
23h 30m1 stop
KLM Logo
6:30 am - 11:45 amBHD-SFO
13h 15m1 stop
$1,520KLM
Find Deal
Wed, Jun 11 - Fri, Jun 20
KLM Logo
1:45 pm - 9:15 pmSFO-BHD
23h 30m1 stop
KLM Logo
6:30 am - 11:45 amBHD-SFO
13h 15m1 stop
$1,735KLM
Find Deal
Wed, Jul 9 - Sat, Jul 19
Useful Info

KAYAK's insights & trends for San Francisco to Northern Ireland flights

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

What is the cheapest month to fly from San Francisco to Northern Ireland?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to Northern Ireland, 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 San Francisco to Northern Ireland is October, when tickets cost $643 (return) on average. On the other hand, the most expensive months are January and December, when the average cost of round-trip tickets is $1,339 and $1,291 respectively.


Good to know

Low seasonJanuary
High seasonMarch
Cheapest flight$668
Best time to beat the crowds but there is an average 40% increase in price.
Most popular time to fly and prices are also 27% lower on average.
Flight from San Francisco to Belfast City Airport

FAQs - booking Northern Ireland flights

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

    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 San Francisco to Northern Ireland.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from San Francisco to Northern Ireland 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 San Francisco to Northern Ireland?

    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 from San Francisco to Northern Ireland with an airline and back with another airline.

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

    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 from San Francisco to Northern Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Northern Ireland?

    The cheapest time of day to fly to Northern Ireland is generally in the afternoon, when round-trip flights cost $819 on average. Morning departures are around 60% more expensive than evening flights, on average. The most expensive time of day to fly to Northern Ireland is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,295.

Top airlines flying from San Francisco to Northern Ireland

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Northern Ireland. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Francisco to Northern Ireland? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
American AirlinesOverall score based on 10000 reviews
7.5Boarding
7.2Comfort
6.5Food
6.9Entertainment
8.0Crew
Airline reviews

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

8.0 ExcellentConstantine, Apr 2025LAX - LAS
Read more American Airlines reviews

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

British Airways staff are very polite and willing to help.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

We kept being told that the flight was full and that all overhead compartments were full and therefore had to check in our hand luggage. We were some of the last people to board and noticed that there was still sufficient space in the overhead compartments. We were obliged to check in hand luggage when there was space and so had to wait at luggage retrieval which took a while to then noticed damage to our luggage - not a great experience!

Worst seats I’ve ever had !!! The seats were very narrow and uncomfortable and misaligned with the seats in front of mine leading to bottom of the seat in front of mine pressing on my legs for 15.5 hours !

This was an overnight flight. There was no meal service in first class, just a simple snack basket was offered along with beverages. There should have been some type of continental breakfast prior to arrival in PHL. As an Executive Platinum American Airlines Advantage member, I received no name recognition from the first class flight attendant. When disembarking at PHL, the flight attendants were more interested in their cell phones than saying "thank you" to the passengers as they disembarked.

The flight was quick and to the point. The crew just did their job w/o excessive talking and everything was just perfect.

Awkward carry on process. Forced to check all carry on. No overhead space of worthiness. Left delayed, but made up the time. Crew was amicable.

Amazingly comfy flight - I had upgraded for a reasonable price and it was worth it. The food also was good.

Had to wait on pilot and crew to depart and had to wait to arrive at the gate because they only had 2 crews working. Delays, delays....Planes just keep getting smaller and tighter and they nickle and dime for everything. When will an airline actually wake up and make flying more enjoyable?

The flight from Seattle was delayed, which made me miss my connection to Florence. I was re-booked NINE HOURS LATER!!! That’s basically a vacation day lost. British Airways needs to partner with other airlines when possible to get a more realistic travel time, if delays occur. I realize there aren’t many flights to Florence from London, so I would book differently were I to return. The actual flight from Seattle was very comfortable and the crew was great, no faults there. I enjoy British Airways, this was an anomaly.

The crew could not have been more helpful, my meal was excellent, I slept peacefully until right before landing, and the BA lounge was a godsend. The only negative I encountered was the coffee both on the plane and in the lounge. Not to my taste but that’s a personal preference.

I don’t understand why a reputable airline like BA would delegate their London flights to AA. Makes no sense to me, as most domestic carriers do such a poor job these days. Terminal 3 at LHR is a total dump

Cancelled flight minutes before boarding. Rescheduled flight was two days later

The flight attendants were EXTREMELY personable and appreciated the service, lights going off after dinner (probably the norm, but I haven’t flown evening overnight flights in a while). Thank you!

Business class seats were very dated on my plane. Very little storage, charging ports were not easily accessible, tv screen kept flopping away. Vegetarian food was disappointing: hardly any protein and severely under-seasoned. Crew was lovely.

The food was ok, but not great. They delayed boarding in Portland and did not enforce group boarding. But the crew was excellent, went above and beyond.

The food was pathetic. There wasn't much leg room and recline space for such a long flight. No tea/ coffee for a 2-3 hour connecting flight without purchasing! Really!?

Service was very good. Because I use a cane, I was allowed to use Priority Boarding. Biggest problem was extremely limited leg room in Economy class seats. For airplane food, it was alright.

Was late but that airport/storm fault. Flight was full but comfortable. Food quite nice. Unfortunate that I had a rather miserable attendant, others were much friendlier

Everything you need to know for your flight from San Francisco to Northern Ireland

Information on your arrival and departure airports

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