Which airlines fly to California?

British Airways, American Airlines and KLM are the top three most popular airlines that fly to California from Belfast according to our data. British Airways is the first choice among our users, with 92% of people opting to fly with this airline when travelling to California. Keep in mind that there are 3 different airlines that fly to California on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Belfast to California?

Iberia and British Airways are the most popular carriers operating from Belfast to California

When did momondo last update prices for flights from Belfast to California?

Prices for flights from Belfast to California were last updated today.

How many operators does momondo search for flights from Belfast to California?

There are 3 operators available for flights from Belfast to California as of September 2025.

How old do you have to be to fly from Belfast to California?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Belfast to California.

What documentation or ID do you need to fly to California?

The necessary travel and health documents for your California trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£320 Cheap Flights from Belfast to California in 2025/26

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Find the cheapest flights from Belfast to California

Round-trip

One-way

Cheap return flights

11:05 - 21:57BHD-ONT

18h 52m2 stops

11:05 - 18:35ONT-BHD

23h 30m2 stops

£466American Airlines

Find Deal

Thu, 26 Feb - Mon, 2 Mar

06:35 - 22:30BHD-SNA

22h 55m2 stops

13:43 - 14:15SNA-BHD

17h 32m2 stops

£466American Airlines

Find Deal

Mon, 9 Mar - Wed, 11 Mar

10:40 - 23:43BHD-ONT

21h 03m2 stops

17:03 - 18:35ONT-BHD

17h 32m2 stops

£467American Airlines

Find Deal

Thu, 26 Feb - Mon, 2 Mar

09:05 - 21:57BHD-ONT

20h 52m2 stops

17:02 - 18:35ONT-BHD

18h 33m2 stops

£471British Airways

Find Deal

Thu, 5 Mar - Mon, 9 Mar

06:30 - 17:45BHD-SFO

19h 15m2 stops

13:45 - 21:15SFO-BHD

23h 30m2 stops

£486Delta

Find Deal

Thu, 9 Oct - Thu, 16 Oct

06:30 - 17:45BHD-SFO

19h 15m2 stops

13:45 - 16:55SFO-BHD

19h 10m1 stop

£507Delta

Find Deal

Thu, 9 Oct - Thu, 16 Oct

12:50 - 21:05BFS-LAS

39h 15m3 stops

07:00 - 20:20LAS-BFS

29h 20m3 stops

£546Multiple Airlines

Find Deal

Wed, 29 Oct - Wed, 5 Nov

08:05 - 12:50BFS-SFO

35h 45m2 stops

15:40 - 22:00SFO-BFS

22h 20m2 stops

£565Multiple Airlines

Find Deal

Fri, 31 Oct - Fri, 7 Nov

06:35 - 18:50BHD-LAS

20h 15m1 stop

23:49 - 16:05LAS-BHD

32h 16m2 stops

£620British Airways

Find Deal

Wed, 5 Nov - Sun, 9 Nov

06:30 - 11:45BHD-SFO

13h 15m1 stop

13:45 - 21:15SFO-BHD

23h 30m1 stop

£771KLM

Find Deal

Sat, 27 Sep - Fri, 3 Oct

Virgin Atlantic flights from Belfast to California

Our best Virgin Atlantic deals on Belfast to California flight tickets

Virgin Atlantic

4 Jan

BHD17:20Belfast City

26h 25m

1 stop

LAX11:45Los Angeles

8 Jan

LAX23:59Los Angeles

32h 51m

2 stops

BHD16:50Belfast City

£1,716

Find similar

Virgin Atlantic

4 Jan

BHD06:30Belfast City

19h 22m

2 stops

LAX17:52Los Angeles

8 Jan

LAX23:59Los Angeles

32h 51m

2 stops

BHD16:50Belfast City

£1,751

Find similar

British Airways flights from Belfast to California

Our best British Airways deals on Belfast to California flight tickets

British Airways

5 Mar

BHD09:05Belfast City

20h 52m

2 stops

ONT21:57Ontario

9 Mar

ONT17:02Ontario

18h 33m

2 stops

BHD18:35Belfast City

£471

Find similar

British Airways

5 Nov

BHD06:35Belfast City

20h 15m

1 stop

LAS18:50Las Vegas Harry Reid Intl

9 Nov

LAS23:49Las Vegas Harry Reid Intl

32h 16m

2 stops

BHD16:05Belfast City

£620

Find similar

British Airways

12 Mar

BHD17:45Belfast City

30h 05m

1 stop

LAX16:50Los Angeles

26 Mar

LAX22:00Los Angeles

13h 50m

1 stop

BHD18:50Belfast City

£4,694

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 26/2

11:05-21:57

2 stops18h 52m

Ontario

Mon 2/3

11:05-18:35

2 stops23h 30m

£466

BelfastSanta Ana

BHD - SNA

BHDSNA

Belfast City

Mon 9/3

06:35-22:30

2 stops22h 55m

Santa Ana J. Wayne/Orange Cnty

Wed 11/3

13:43-14:15

2 stops17h 32m

£466

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 26/2

10:40-23:43

2 stops21h 03m

Ontario

Mon 2/3

17:03-18:35

2 stops17h 32m

£467

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 5/3

09:05-21:57

2 stops20h 52m

Ontario

Mon 9/3

17:02-18:35

2 stops18h 33m

£471

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 9/10

06:30-17:45

2 stops19h 15m

San Francisco

Thu 16/10

13:45-21:15

2 stops23h 30m

£486

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 9/10

06:30-17:45

2 stops19h 15m

San Francisco

Thu 16/10

13:45-16:55

1 stop19h 10m

£507

BelfastLas Vegas

BFS - LAS

BFSLAS

Belfast Intl

Wed 29/10

12:50-21:05

3 stops39h 15m

Las Vegas Harry Reid Intl

Wed 5/11

07:00-20:20

3 stops29h 20m

£546

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Fri 31/10

08:05-12:50

2 stops35h 45m

San Francisco

Fri 7/11

15:40-22:00

2 stops22h 20m

£565

BelfastLas Vegas

BHD - LAS

BHDLAS

Belfast City

Wed 5/11

06:35-18:50

1 stop20h 15m

Las Vegas Harry Reid Intl

Sun 9/11

23:49-16:05

2 stops32h 16m

£620

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Sat 27/9

06:30-11:45

1 stop13h 15m

San Francisco

Fri 3/10

13:45-21:15

1 stop23h 30m

£771

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Belfast to California

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to California?

If you are unable to visit California during the month of May, then departing from Belfast during the month January is also very affordable. Most momondo users find prices during this month for around £480.

What is the cheapest day to depart on your flight to California?

The cheapest day to depart on your flight to California is on a Saturday when prices can be found for as low as £539. This is often the case because there is less demand to fly during this day of the week. On the other hand, Friday is the most expensive day to depart from Belfast because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £791.

What is the cheapest time of day to depart on your flight to California?

The cheapest time of day to fly to California is in the afternoon when flights can be purchased for as low as £521. In contrast, the most expensive time of day to depart to California is in the morning when prices are around £607.

Cheap Belfast to California flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Belfast to California

Direct flights	None

There are no direct flights from Belfast to California. There are no popular flight routes from Belfast to California.

Search flight deals

When did momondo last update prices for flights from Belfast to California?
Prices for flights from Belfast to California were last updated today.
How many operators does momondo search for flights from Belfast to California?
There are 3 operators available for flights from Belfast to California as of September 2025.
How old do you have to be to fly from Belfast to California?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Belfast to California.
What documentation or ID do you need to fly to California?
The necessary travel and health documents for your California trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Belfast to California

Compare and see reviews for airlines that fly from Belfast to California with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom £362	Free Cancellation	Rating 6.7 7,363 reviews	Search British Airways flights
American Airlines	PriceFrom £465	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
KLM	PriceFrom £497	Free Cancellation	Rating 7.8 1,386 reviews	Search KLM flights

Why use momondo?

Why should I use momondo to find a flight deal from Belfast to California?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Belfast to California . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Belfast to California with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to California from Belfast with this policy.

How can momondo help me find flights from Belfast to California?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Belfast to California.

I’m not ready to book a flight from Belfast to California right now. Can momondo alert me if prices change?

Price alerts on flights to California from Belfast are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.