$197 Find Cheap Flights from California to Northern Ireland

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Low seasonFebruary
High seasonAugust
Cheapest flight$197
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Los Angeles to Belfast Intl Airport

FAQs for booking flights from California to Northern Ireland

  • How does KAYAK find such low prices on flights from California 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 California to Northern Ireland.

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

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

    Based on KAYAK data, the cheapest day to fly to Northern Ireland is Friday where round-trip tickets can be as cheap as $691. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $1,143 on average.

  • 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 $681 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Northern Ireland is generally in the evening, which is peak travel time and where the average cost of a ticket is $838.

  • What is the cheapest month to fly from California to Northern Ireland?

    The cheapest month for flights from California to Northern Ireland is October, when tickets cost $599 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,637 and $1,100 respectively.

  • How long is the flight to Northern Ireland?

    An average nonstop flight from California to Northern Ireland takes 22h 02m, covering a distance of 5045 miles. The shortest route is Los Angeles (LAX) to Belfast Intl Airport (BFS) with an average flight time of 13h 15m.

  • What are the most popular destinations in Northern Ireland?

    Based on KAYAK flight searches, the most popular destination is Belfast (99% of total searches to Northern Ireland). The next most popular destination is Campbeltown (1%).

Reviews of the top airlines flying from California to Northern Ireland

 
Need help choosing which airline to fly with from California 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
6.5Food
8.0Crew
6.9Entertainment
7.2Comfort
7.5Boarding
Airline reviews

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

10.0 ExcellentFraxys, Jun 2025ONT - DFW
Read more American Airlines reviews

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

Cramped seats. FAA should make airlines have more legroom, for even short people complain

Flight was full, and would have preferred an aisle seat, but due to getting a late ticket ,the seat I had was adequate. The flight crew were very help full and hard working. Food and drink were excellent for the 11hr flight. Overall I was pleased with flight, and would recommend British Airways again.

Eventless. It was a good flight and good crew. Can’t complaint.

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.

More Indian vegetarian food options would have been better Availability of seat selection free of charge 72 hours before departure would be great

This was the second time on BA, food terrible, bathrooms gross,( granted, that was mostly due to the disgusting children urinating all over it)boarding was late and disorganized. No gate issued until last minute st Heathrow, bad system, caused undue stress. Seats were painful, that's what you get for traveling like a poor in economy, right BA? Should have been able to afford business or first class if you want to actually be able to walk upright without back pain after a trip.

This was the second time on BA, food terrible, bathrooms gross, boarding late and disorganized. No gate issued until last minute st Heathrow, bad system, caused undue stress.

The flight was delayed twice and because of that, we missed our connecting flight. British Airways then attempted to put us on the last flight to Milan from London which would have kept us in the airport for 12 hours. We had to speak to several levels of bureaucracy until BA management let us fly on a flight that only kept us in the airport for two hours. If there was an earlier flight, why weren’t we put on that flight from the start? Unacceptable behavior from what was once my favorite carrier.

The payment system was not working so was unable to connect wifi the entire flight

everything to do with KAYAK was terrible. Your customer facing departments are utterly useless, timewasting and unhelpful.

I ordered short ribs for main course. It tasted sweet, really sweet. Horrible.

The screen didn’t work and I didn’t get the seat upgrade I paid $300 for. They were no help with that,

Paid $180 for seat selection, and selection essnt honored. Have to call for a refund.

My flights were great and the crew on them was lovely especially the London to Barcelona flight as Al & AJ were so amazingly nice. I wish they would be my crew always as they have the best customer service. Sadly both flights were delayed the first one from Vegas was because they clearly loaded the cargo wrong the plane was off balance making us 2 hours late. This made me miss my connection and sadly it was challenging rebooking while I was on the flight. I will never use Kayak again as there was no customer service number or live chat and you rebooked me on a flight 2 days later. I had my mom call BA to change it which she did after spending an hour on hold. This should not be so difficult. My second flight was an hour delayed due to not being able to disconnect the bridge from the plane but I did finally make it home.

Book cheap flights from California to Northern Ireland

Recent round-trip flight deals

9/21Sun
1 stopBritish Airways
14h 20mSFO-BHD
9/29Mon
1 stopBritish Airways
26h 20mBHD-SFO
$633
10/15Wed
1 stopBritish Airways
15h 55mLAX-BHD
10/23Thu
1 stopBritish Airways
14h 50mBHD-LAX
$635
9/19Fri
1 stop
19h 55mLAX-BHD
10/10Fri
1 stop
15h 10mBHD-LAX
$662
10/15Wed
1 stopAmerican Airlines
13h 50mLAX-BHD
10/23Thu
2 stopsAmerican Airlines
18h 40mBHD-LAX
$670
9/16Tue
2 stopsIberia
21h 16mSFO-BHD
9/24Wed
1 stopIberia
15h 00mBHD-SFO
$677
9/16Tue
2 stopsIberia
21h 16mSFO-BHD
9/24Wed
2 stopsIberia
24h 01mBHD-SFO
$687
11/3Mon
2 stopsAmerican Airlines
16h 43mLAX-BHD
11/15Sat
1 stopAmerican Airlines
14h 40mBHD-LAX
$714
8/27Wed
1 stop
20h 05mLAX-BFS
9/2Tue
1 stop
25h 15mBFS-LAX
$721
9/17Wed
2 stopsDelta
23h 16mSFO-BHD
9/25Thu
1 stopDelta
13h 15mBHD-SFO
$759
9/17Wed
2 stopsDelta
23h 16mSFO-BHD
9/25Thu
2 stopsDelta
17h 30mBHD-SFO
$769

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Recent one-way flight deals

8/4Mon
1 stop
33h 55mLAX-BFS
$197
8/1Fri
1 stop
31h 30mLAX-BFS
$200
8/2Sat
1 stop
30h 45mLAX-BFS
$202
8/6Wed
1 stopBritish Airways
15h 05mSFO-BHD
$386
7/29Tue
1 stopBritish Airways
15h 20mLAX-BHD
$400
9/5Fri
1 stopAmerican Airlines
17h 45mSFO-BHD
$414
9/5Fri
2 stopsAmerican Airlines
17h 38mSFO-BHD
$419
7/28Mon
2 stopsDelta
19h 40mONT-BHD
$452
8/3Sun
2 stopsDelta
20h 06mONT-BHD
$477
7/29Tue
2 stopsIberia
18h 20mONT-BHD
$492

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Last minute flights from California to Northern Ireland

Last minute flight, train and bus deals

6/19Thu
multi-stopBritish Airways
19h 40mLAX-BHD
6/28Sat
multi-stopBritish Airways
29h 05mBHD-LAX
$1,999
6/19Thu
multi-stopBritish Airways
19h 40mLAX-BHD
6/28Sat
multi-stopBritish Airways
26h 25mBHD-LAX
$2,004
6/19Thu
multi-stopBritish Airways
21h 55mLAX-BHD
6/28Sat
multi-stopBritish Airways
34h 20mBHD-LAX
$2,015
6/19Thu
multi-stopBritish Airways
14h 40mLAX-BHD
6/28Sat
multi-stopBritish Airways
21h 15mBHD-LAX
$2,235
6/19Thu
multi-stopBritish Airways
17h 40mLAX-BHD
6/28Sat
multi-stopBritish Airways
31h 30mBHD-LAX
$2,310
6/23Mon
multi-stopBritish Airways
35h 26mLAX-BHD
7/7Mon
multi-stopBritish Airways
19h 18mBHD-LAX
$5,115
6/23Mon
multi-stopBritish Airways
16h 25mLAX-BHD
7/7Mon
multi-stopBritish Airways
19h 18mBHD-LAX
$5,291
6/23Mon
multi-stop
16h 25mLAX-BHD
7/7Mon
multi-stop
26h 55mBHD-LAX
$5,736
6/23Mon
multi-stopBritish Airways
16h 40mONT-BHD
7/7Mon
multi-stopBritish Airways
35h 28mBHD-ONT
$5,964
6/23Mon
multi-stopKLM
17h 37mONT-BHD
7/7Mon
multi-stopKLM
17h 59mBHD-ONT
$11,456

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Everything you need to know for your flight to Northern Ireland

Cabin class types available on flights to California

Cabin classes available on flights to California. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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