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Cheap flights from California to Belfast from $313

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from California to Belfast departing on 9/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from California to Belfast

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:20 am - 11:20 pm
LAX
-
BFS
28h 00m
3 stops
Multiple Airlines Logo
11:30 pm - 10:05 pm
BFS
-
LAX
30h 35m
3 stops
$774Multiple Airlines
Mon, Apr 20 - Tue, May 5
Multiple Airlines Logo
4:30 pm - 11:20 pm
LAX
-
BFS
22h 50m
1 stop
Multiple Airlines Logo
2:40 pm - 10:00 am
BFS
-
LAX
27h 20m
1 stop
$796Multiple Airlines
Mon, Sep 7 - Mon, Sep 21
Multiple Airlines Logo
4:30 pm - 11:20 pm
LAX
-
BFS
22h 50m
1 stop
Multiple Airlines Logo
4:45 pm - 10:00 am
BFS
-
LAX
25h 15m
2 stops
$808Multiple Airlines
Mon, Sep 7 - Mon, Sep 21
Multiple Airlines Logo
4:30 pm - 8:40 pm
LAX
-
BFS
20h 10m
1 stop
Multiple Airlines Logo
6:10 am - 1:20 pm
BFS
-
LAX
15h 10m
1 stop
$815Multiple Airlines
Wed, Aug 19 - Mon, Aug 31
British Airways Logo
4:35 pm - 5:40 pm
SFO
-
BHD
17h 05m
1 stop
British Airways Logo
6:30 pm - 1:50 pm
BHD
-
SFO
27h 20m
1 stop
$819British Airways
Sun, Apr 26 - Mon, May 11
British Airways Logo
4:35 pm - 5:40 pm
SFO
-
BHD
17h 05m
1 stop
British Airways Logo
4:05 pm - 1:50 pm
BHD
-
SFO
29h 45m
1 stop
$822British Airways
Sun, Sep 6 - Wed, Sep 9
American Airlines Logo
2:22 pm - 5:35 pm
ONT
-
BHD
19h 13m
2 stops
American Airlines Logo
9:40 am - 11:06 pm
BHD
-
ONT
21h 26m
2 stops
$846American Airlines
Tue, Aug 18 - Tue, Sep 1
American Airlines Logo
3:37 pm - 5:35 pm
SFO
-
BHD
17h 58m
2 stops
American Airlines Logo
1:45 pm - 11:06 pm
BHD
-
SFO
17h 21m
2 stops
$859American Airlines
Tue, Aug 4 - Tue, Aug 18
Virgin Atlantic Logo
1:45 pm - 4:55 pm
SFO
-
BHD
19h 10m
1 stop
Virgin Atlantic Logo
5:30 pm - 7:20 pm
BHD
-
SFO
33h 50m
2 stops
$895Virgin Atlantic
Sun, Apr 26 - Mon, May 11
Delta Logo
7:20 am - 4:55 pm
SJC
-
BHD
25h 35m
2 stops
Delta Logo
5:30 pm - 7:02 pm
BHD
-
SJC
33h 32m
2 stops
$921Delta
Sun, Apr 26 - Mon, May 11

British Airways flights from California to Belfast

Our best British Airways deals on California to Belfast flight tickets
British Airways
Apr 26
SFO4:35 pmSan Francisco
17h 05m
1 stop
BHD5:40 pmBelfast City
May 11
BHD6:30 pmBelfast City
27h 20m
1 stop
SFO1:50 pmSan Francisco
$819
British Airways
Sep 6
SFO4:35 pmSan Francisco
14h 00m
1 stop
BHD2:35 pmBelfast City
Sep 9
BHD6:20 pmBelfast City
27h 30m
1 stop
SFO1:50 pmSan Francisco
$822
British Airways
Aug 4
SFO7:30 pmSan Francisco
16h 10m
1 stop
BHD7:40 pmBelfast City
Aug 18
BHD6:20 pmBelfast City
27h 30m
1 stop
SFO1:50 pmSan Francisco
$828

KLM flights from California to Belfast

Our best KLM deals on California to Belfast flight tickets
KLM
Apr 20
LAX9:10 amLos Angeles
16h 10m
2 stops
BHD9:20 amBelfast City
Apr 27
BHD5:30 pmBelfast City
29h 15m
1 stop
LAX2:45 pmLos Angeles
$911
KLM
Jul 22
LAX3:32 pmLos Angeles
17h 23m
2 stops
BHD4:55 pmBelfast City
Aug 12
BHD5:30 pmBelfast City
29h 15m
1 stop
LAX2:45 pmLos Angeles
$940
KLM
Apr 26
SFO6:20 amSan Francisco
19h 00m
2 stops
BHD9:20 amBelfast City
May 11
BHD9:50 amBelfast City
22h 49m
2 stops
SFO12:39 amSan Francisco
$971

momondo 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, momondo users made 832,500 searches. Data last updated March 25, 2026.
Use the filters below to find and compare flights from California to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Mon 4/20

11:20 am-11:20 pm

3 stops28h 00m

Belfast Intl

Tue 5/5

11:30 pm-10:05 pm

3 stops30h 35m

$774

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Mon 9/7

4:30 pm-11:20 pm

1 stop22h 50m

Belfast Intl

Mon 9/21

2:40 pm-10:00 am

1 stop27h 20m

$796

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Mon 9/7

4:30 pm-11:20 pm

1 stop22h 50m

Belfast Intl

Mon 9/21

4:45 pm-10:00 am

2 stops25h 15m

$808

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Wed 8/19

4:30 pm-8:40 pm

1 stop20h 10m

Belfast Intl

Mon 8/31

6:10 am-1:20 pm

1 stop15h 10m

$815

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 4/26

4:35 pm-5:40 pm

1 stop17h 05m

Belfast City

Mon 5/11

6:30 pm-1:50 pm

1 stop27h 20m

$819

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 9/6

4:35 pm-5:40 pm

1 stop17h 05m

Belfast City

Wed 9/9

4:05 pm-1:50 pm

1 stop29h 45m

$822

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 8/18

2:22 pm-5:35 pm

2 stops19h 13m

Belfast City

Tue 9/1

9:40 am-11:06 pm

2 stops21h 26m

$846
Quickest round-trip

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 8/4

3:37 pm-5:35 pm

2 stops17h 58m

Belfast City

Tue 8/18

1:45 pm-11:06 pm

2 stops17h 21m

$859

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 4/26

1:45 pm-4:55 pm

1 stop19h 10m

Belfast City

Mon 5/11

5:30 pm-7:20 pm

2 stops33h 50m

$895

San JoseBelfast

SJC - BHD

SJCBHD

San Jose

Sun 4/26

7:20 am-4:55 pm

2 stops25h 35m

Belfast City

Mon 5/11

5:30 pm-7:02 pm

2 stops33h 32m

$921

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Belfast from

How to get the cheapest flight ticket from California to Belfast

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

What is the cheapest month to fly to Belfast?

In general, August is the cheapest month to fly from California to Belfast. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $651. If you don’t want to visit Belfast in August, then you should wait until February to fly from California, when ticket prices are also cheap, with an average price of $685.

Cheap California to Belfast flight deals and tips

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

Fastest flight time

14h 00m

Direct flights

None
The fastest flight from California to Belfast takes 14h 00m
There are no direct flights from California to Belfast. There are no popular flight routes from California to Belfast.
Search flight deals

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

    Prices for flights from California to Belfast are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from California to Belfast.

  • What documentation or ID do you need to fly to Belfast?

    The travel and health documents you'll need for your trip to Belfast may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Belfast. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from California to Belfast

Compare and see reviews for airlines that fly from California to Belfast with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $583Free CancellationRating
6.7
7,819 reviews
Search British Airways flights

Why use momondo?

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

It is quick and easy to find California to Belfast flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Belfast that suits you.

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

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

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Belfast from California.

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

If you are not ready to book a flight from California to Belfast now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Belfast and let you know when they change.

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in Belfast

Airports listed have a maximum distance of 12.2 mi from Belfast
Belfast Intl Airport
Belfast City Airport