$613 Find Cheap Flights from California to Northern Ireland

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Useful Info

Good to know

Low seasonFebruary
Cheapest flight$613
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Los Angeles to Belfast City 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.

  • How many airports are there in Northern Ireland?

    There are 3 airports in Northern Ireland. The busiest airport is Belfast City Airport (BHD), with 56% of all flights arriving there.

  • 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 March, when tickets cost $644 (return) on average. On the other hand, the most expensive months are July and January, when the average cost of round-trip tickets is $1,779 and $1,351 respectively.

  • How long is the flight to Northern Ireland?

    An average nonstop flight from California to Northern Ireland takes 21h 23m, covering a distance of 5058 miles. The shortest route is Las Vegas (LAS) to Belfast City Airport (BHD) with an average flight time of 13h 55m.

  • 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 airline 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.
6.7
British AirwaysOverall score based on 7487 reviews
7.6Crew
6.3Food
6.7Comfort
6.9Boarding
6.4Entertainment
Airline reviews

Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.

10.0 Excellentshamarcus, Oct 2025SEA - LHR
Read more British Airways reviews

Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.

Seat pitch is not enough to eat comfortably. When seat in front is reclined, your screen comes closer to your face. Ryanair seats are actually more comfortable.

The leg from Portland to Heathrow was great for a business class ticket. The BA leg from Heathrow to Lisbon was terrible. Basically coach seating with an empty seat between you and next passenger. Absolutely no leg room. Should not have been charged for business class and it was a 3 hour flight.

The flat beds. Other than that, the place was not clean.

Need to offer Better food from LAX to London Service from London to Delhi very delayed after take off.

Great crew and food and beverage. Seating tight but not the airline's fault. Will definitely fly BA in future!

The flight was very delayed in taking off - which was out of control of the crew, but then the pilot worked hard so we only arrived about 30 minutes late. Everyone was very friendly and accommodating!

Crying baby the ENTIRE flight. Not your fault, but I paid 2700 for a premium economy ticket and it wasn't worth it. should have just stuck with coach. flight attendants very mediocre - minimal effort. Plane didn't seem very clean. Didn't have any cleansing wipes - most airlines give you this when you board. Flat screen scrolling didn't work. Toiletry case a joke - why bother at all?

Enjoyable flight, helpful crew everything was organized to accommodate passengers.

I was transferred to an American Airlines flight. The boarding was late and unorganized. The seating was extremely tight and uncomfortable. Will not use AA again.

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.
First Class flights to Northern Ireland
Business Class flights to Northern Ireland
Prem Econ Class flights to Northern Ireland
Economy Class flights to Northern Ireland

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