HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Belfast

$302+ Cheap flights from California to Belfast

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 7/23. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BHD
Apr 27 — May 41
Sun 4/27
Sun 5/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from California to Belfast 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 California to Belfast

Keep the following information in mind while searching for California to Belfast flight deals. Data was last updated April 22, 2025.

Round-trip from

$562
(Kiwi.com)

One-way from

$302
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$817
From California to Belfast
Search Deals
One-way flight from California to Belfast
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($88 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from California to Belfast

Cheapest flights from California to Belfast
Explore the most affordable flight options available from California to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/24:30 pmLAX - BFS
1 stop31h 30mMultiple Airlines
Thu 5/159:00 pmBFS - LAX
1 stop25h 10mMultiple Airlines
Deal found 4/22$562
This Norse deal was found by Cheapflights users on 4/22. 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 Norse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/24:30 pmLAX - BHD
1 stop19h 55mMultiple Airlines
Thu 5/158:15 pmBHD - LAX
1 stop25h 55mMultiple Airlines
Deal found 4/22$626
This Expedia deal was found by Cheapflights users on 4/22. 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.
Wed 10/157:20 pmSFO - BHD
1 stop15h 20mIberia
Mon 10/209:50 amBHD - SFO
1 stop36h 00mIberia
Deal found 4/22$666
This Expedia deal was found by Cheapflights users on 4/22. 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.
Wed 11/58:40 pmSFO - BHD
1 stop14h 30mBritish Airways
Mon 11/107:30 pmBHD - SFO
1 stop27h 30mBritish Airways
Deal found 4/22$668
This Cheapflightsfares deal was found by Cheapflights users on 4/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/239:40 pmLAX - BHD
1 stop13h 45mBritish Airways
Tue 9/309:35 amBHD - LAX
1 stop16h 00mBritish Airways
Deal found 4/21$668
This American Airlines deal was found by Cheapflights users on 4/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/155:17 pmLAX - BHD
2 stops17h 23mAmerican Airlines
Thu 10/236:35 amBHD - LAX
1 stop19h 30mAmerican Airlines
Deal found 4/21$699
This oojo deal was found by Cheapflights users on 4/21. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/235:09 pmONT - BHD
2 stops18h 16mBritish Airways
Tue 9/308:20 pmBHD - ONT
2 stops29h 31mBritish Airways
Deal found 4/21$709
This American Airlines deal was found by Cheapflights users on 4/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/84:35 pmSFO - BHD
1 stop14h 45mAmerican Airlines
Tue 9/169:35 amBHD - SFO
2 stops20h 22mAmerican Airlines
Deal found 4/22$723
This Delta deal was found by Cheapflights users on 4/21. 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.
Sun 9/2110:59 pmLAX - BHD
2 stops33h 56mDelta
Thu 10/26:30 amBHD - LAX
1 stop13h 20mDelta
Deal found 4/21$736
This Delta deal was found by Cheapflights users on 4/21. 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.
Sun 9/215:05 pmONT - BHD
2 stops20h 10mDelta
Thu 10/26:30 amBHD - ONT
2 stops24h 11mDelta
Deal found 4/21$746
This Air France deal was found by Cheapflights users on 4/21. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/245:05 pmONT - BHD
2 stops15h 50mKLM
Wed 10/16:30 amBHD - ONT
2 stops17h 44mKLM
Deal found 4/21$781
This KLM deal was found by Cheapflights users on 4/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/223:40 pmLAX - BHD
2 stops17h 15mKLM
Wed 10/16:30 amBHD - LAX
2 stops16h 53mKLM
Deal found 4/21$839

Cheapflights Fare Finder

Customize your flight search to find flights from California to Belfast 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 April 22, 2025.
Use the filters below to find and compare flights from California to Belfast that are best for you.

Fly from

California

Fly to

Belfast

Route

Depart

Return

Price

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Fri 5/2

4:30 pm-8:00 am

1 stop31h 30m

Belfast Intl

Thu 5/15

9:00 pm-2:10 pm

1 stop25h 10m

$562

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Fri 5/2

4:30 pm-8:25 pm

1 stop19h 55m

Belfast City

Thu 5/15

8:15 pm-2:10 pm

1 stop25h 55m

$626

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 10/15

7:20 pm-6:40 pm

1 stop15h 20m

Belfast City

Mon 10/20

9:50 am-1:50 pm

1 stop36h 00m

$666

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Tue 9/23

9:40 pm-7:25 pm

1 stop13h 45m

Belfast City

Tue 9/30

9:35 am-5:35 pm

1 stop16h 00m

$668

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 10/15

11:00 am-11:55 am

2 stops16h 55m

Belfast City

Mon 10/20

6:30 pm-4:24 pm

2 stops29h 54m

$681

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 10/15

5:17 pm-6:40 pm

2 stops17h 23m

Belfast City

Thu 10/23

6:35 am-6:05 pm

1 stop19h 30m

$699

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Thu 9/11

2:28 pm-3:30 pm

2 stops17h 02m

Belfast City

Thu 9/25

9:35 am-5:25 pm

1 stop15h 50m

$701

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 9/23

5:09 pm-7:25 pm

2 stops18h 16m

Belfast City

Tue 9/30

8:20 pm-5:51 pm

2 stops29h 31m

$709

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Sun 9/21

10:59 pm-4:55 pm

2 stops33h 56m

Belfast City

Thu 10/2

6:30 am-11:50 am

1 stop13h 20m

$736

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 9/21

5:05 pm-9:15 pm

2 stops20h 10m

Belfast City

Thu 10/2

6:30 am-10:41 pm

2 stops24h 11m

$746

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 27 results
1
2
3

Best time to book a flight from California to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from California with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from California to Belfast

What is the cheapest month to book a flight from California to Belfast?

Currently, February is the cheapest month in which you can book a flight from California to Belfast (average of $657). Flying from California to Belfast in June is currently the most expensive (average of $1,189). 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.

What is the cheapest time of day to fly from CA to BFS?

Find hourly flight availability from California to Belfast. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 22, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from California to Belfast as you normally would.

Rainfall in Belfast by month

Plan your trip to Belfast by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Belfast ranges from 2.0 - 3.5 inches per month. October is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Belfast when rainfall is around 2.0 in.

Temperature in Belfast by month

Plan your trip to Belfast by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Belfast, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Belfast

Get insights into the airlines that provide service to Belfast. 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 Belfast. Reviews last updated April 22, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Virgin Atlantic from California to Belfast to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,920 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,331 reviews
Delta
8.0
Very good
7,920 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Virgin Atlantic
7.4
Good
642 reviews
Delta
8.0
Very good
7,920 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,920 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Aer Lingus
7.0
Good
1,067 reviews
Delta
8.0
Very good
7,920 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from California to Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from California to Belfast one-way?

    The cheapest airlines for a one-way flight from California to Belfast are British Airways ($801), KLM ($827), and Iberia ($8,633).

  • What are the most popular routes from California to Belfast?

    The most popular route from California to Belfast is San Francisco - Belfast Intl. You may also consider Los Angeles - Belfast City or San Francisco - Belfast City.

  • Can I find deals for flights from California to Belfast that include hotel bookings?

    Yes. In addition to deals on California to Belfast flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from California to Belfast?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from California to Belfast.

  • Can I find deals for business class flights from California to Belfast?

    Yes. Cheapflights offers flight deals from California to Belfast by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from California to Belfast?

    Currently, February is the cheapest month in which you can book a flight from California to Belfast (average of $657). Flying from California to Belfast in June is currently the most expensive (average of $1,189). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for California to Belfast

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Belfast Intl flights
Newark to Belfast Intl flights
Seattle to Belfast Intl flights
John F Kennedy Intl to Belfast City flights
Newark to Belfast City flights
Orlando to Belfast Intl flights
Seattle to Belfast City flights
Boston to Belfast Intl flights
O'Hare Intl to Belfast Intl flights
Boston to Belfast City flights
St. Louis to Belfast City flights
Miami to Belfast Intl flights
Orlando to Belfast City flights
Dallas/Fort Worth to Belfast Intl flights
Charlotte to Belfast Intl flights
O'Hare Intl to Belfast City flights
Charlotte to Belfast City flights
Dallas/Fort Worth to Belfast City flights
LaGuardia to Belfast Intl flights
Reagan-National to Belfast Intl flights
Dulles Intl to Belfast Intl flights
Hobby to Belfast City flights
Raleigh to Belfast Intl flights
Miami to Belfast City flights
Hobby to Belfast Intl flights
Dulles Intl to Belfast City flights
LaGuardia to Belfast City flights
Nashville to Belfast City flights
Baltimore to Belfast Intl flights
Reagan-National to Belfast City flights
George Bush Intcntl to Belfast City flights
San Francisco to Belfast Intl flights
Los Angeles to Belfast City flights
Atlanta to Belfast Intl flights
Kansas City to Belfast City flights
Baltimore to Belfast City flights
Portland to Belfast City flights
Atlanta to Belfast City flights
Minneapolis to Belfast Intl flights
Philadelphia to Belfast Intl flights
Raleigh to Belfast City flights
San Francisco to Belfast City flights
Love Field to Belfast City flights
Minneapolis to Belfast City flights
Philadelphia to Belfast City flights
Austin to Belfast Intl flights
Cincinnati to Belfast Intl flights
Denver to Belfast Intl flights
Wichita to Belfast Intl flights
Austin to Belfast City flights

Top 2 airlines flying from California to Belfast

Discover the top 2 airlines that operate flights from California to Belfast. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$493Average$912FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$596Average$985FlexibilityNo cancel feeOn-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.