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Cheap flights from California to Belfast from $316

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 9/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
British Airways Logo
5:30 pm - 4:05 pm
SFO
-
BHD
14h 35m
1 stop
British Airways Logo
6:45 am - 3:00 pm
BHD
-
SFO
16h 15m
1 stop
$859British Airways
Mon, Nov 2 - Fri, Nov 13
British Airways Logo
10:10 pm - 6:55 pm
LAS
-
BHD
12h 45m
1 stop
British Airways Logo
12:40 pm - 8:00 pm
BHD
-
LAS
15h 20m
1 stop
$859British Airways
Tue, Aug 18 - Tue, Sep 29
American Airlines Logo
4:30 pm - 4:45 pm
LAX
-
BHD
17h 15m
1 stop
American Airlines Logo
6:35 am - 3:50 pm
BHD
-
LAX
17h 15m
1 stop
$886American Airlines
Tue, Oct 27 - Tue, Nov 3
American Airlines Logo
6:10 pm - 5:30 pm
LAX
-
BHD
15h 20m
1 stop
American Airlines Logo
11:00 am - 8:15 pm
BHD
-
LAX
17h 15m
1 stop
$887American Airlines
Mon, Sep 14 - Fri, Sep 25
Delta Logo
11:30 pm - 9:20 am
LAS
-
BHD
25h 50m
2 stops
Delta Logo
9:50 am - 6:35 pm
BHD
-
LAS
16h 45m
1 stop
$900Delta
Sun, Aug 16 - Fri, Sep 25
Multiple Airlines Logo
8:10 pm - 10:30 pm
LAX
-
BFS
19h 20m
2 stops
Multiple Airlines Logo
6:05 am - 7:20 am
BFS
-
LAX
33h 15m
3 stops
$1,006Multiple Airlines
Wed, Oct 28 - Mon, Nov 2
Multiple Airlines Logo
7:30 am - 7:50 pm
LAX
-
BFS
28h 20m
2 stops
Multiple Airlines Logo
8:15 pm - 3:28 pm
BFS
-
LAX
27h 13m
2 stops
$1,008Multiple Airlines
Tue, Aug 18 - Tue, Sep 1
Delta Logo
12:55 pm - 4:55 pm
ONT
-
BHD
20h 00m
2 stops
Delta Logo
9:50 am - 11:44 pm
BHD
-
ONT
21h 54m
2 stops
$1,038Delta
Tue, Aug 18 - Wed, Sep 2
KLM Logo
1:45 pm - 9:20 am
SFO
-
BHD
35h 35m
1 stop
KLM Logo
9:50 am - 8:19 pm
BHD
-
SFO
18h 29m
2 stops
$1,093KLM
Tue, Jul 21 - Thu, Aug 6
KLM Logo
2:19 pm - 4:55 pm
SFO
-
BHD
18h 36m
2 stops
KLM Logo
9:50 am - 8:19 pm
BHD
-
SFO
18h 29m
2 stops
$1,097KLM
Tue, Jul 21 - Thu, Aug 6

British Airways flights from California to Belfast

Our best British Airways deals on California to Belfast flight tickets
British Airways
Nov 2
SFO5:30 pmSan Francisco
14h 35m
1 stop
BHD4:05 pmBelfast City
Nov 13
BHD6:45 amBelfast City
16h 15m
1 stop
SFO3:00 pmSan Francisco
$859
British Airways
Sep 27
LAS5:26 pmLas Vegas Harry Reid Intl
17h 19m
2 stops
BHD6:45 pmBelfast City
Oct 9
BHD11:00 amBelfast City
17h 00m
1 stop
LAS8:00 pmLas Vegas Harry Reid Intl
$873
British Airways
Sep 14
SFO4:35 pmSan Francisco
14h 55m
1 stop
BHD3:30 pmBelfast City
Sep 16
BHD8:35 pmBelfast City
25h 15m
1 stop
SFO1:50 pmSan Francisco
$876

American Airlines flights from California to Belfast

Our best American Airlines deals on California to Belfast flight tickets
American Airlines
Oct 27
LAX4:30 pmLos Angeles
17h 15m
1 stop
BHD4:45 pmBelfast City
Nov 3
BHD6:35 amBelfast City
17h 15m
1 stop
LAX3:50 pmLos Angeles
$886
American Airlines
Sep 14
LAX6:10 pmLos Angeles
15h 20m
1 stop
BHD5:30 pmBelfast City
Sep 25
BHD11:00 amBelfast City
17h 15m
1 stop
LAX8:15 pmLos Angeles
$887
American Airlines
Nov 2
SFO2:06 pmSan Francisco
17h 59m
2 stops
BHD4:05 pmBelfast City
Nov 13
BHD6:45 amBelfast City
19h 39m
2 stops
SFO6:24 pmSan Francisco
$889

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 May 13, 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

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 11/2

5:30 pm-4:05 pm

1 stop14h 35m

Belfast City

Fri 11/13

6:45 am-3:00 pm

1 stop16h 15m

$859
Quickest round-trip

Las VegasBelfast

LAS - BHD

LASBHD

Las Vegas Harry Reid Intl

Tue 8/18

10:10 pm-6:55 pm

1 stop12h 45m

Belfast City

Tue 9/29

12:40 pm-8:00 pm

1 stop15h 20m

$859

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Tue 10/27

4:30 pm-4:45 pm

1 stop17h 15m

Belfast City

Tue 11/3

6:35 am-3:50 pm

1 stop17h 15m

$886

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Mon 9/14

6:10 pm-5:30 pm

1 stop15h 20m

Belfast City

Fri 9/25

11:00 am-8:15 pm

1 stop17h 15m

$887

Las VegasBelfast

LAS - BHD

LASBHD

Las Vegas Harry Reid Intl

Sun 8/16

11:30 pm-9:20 am

2 stops25h 50m

Belfast City

Fri 9/25

9:50 am-6:35 pm

1 stop16h 45m

$900

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Wed 10/28

8:10 pm-10:30 pm

2 stops19h 20m

Belfast Intl

Mon 11/2

6:05 am-7:20 am

3 stops33h 15m

$1,006

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Tue 8/18

7:30 am-7:50 pm

2 stops28h 20m

Belfast Intl

Tue 9/1

8:15 pm-3:28 pm

2 stops27h 13m

$1,008

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 8/18

12:55 pm-4:55 pm

2 stops20h 00m

Belfast City

Wed 9/2

9:50 am-11:44 pm

2 stops21h 54m

$1,038

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 7/21

1:45 pm-9:20 am

1 stop35h 35m

Belfast City

Thu 8/6

9:50 am-8:19 pm

2 stops18h 29m

$1,093

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 7/21

2:19 pm-4:55 pm

2 stops18h 36m

Belfast City

Thu 8/6

9:50 am-8:19 pm

2 stops18h 29m

$1,097

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, March 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 $566. If you don’t want to visit Belfast in March, then you should wait until September to fly from California, when ticket prices are also cheap, with an average price of $586.

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

12h 45m

Direct flights

None
The fastest flight from California to Belfast takes 12h 45m
There are no direct flights from California to Belfast. There are no popular flight routes from California to Belfast.
Search flight deals

Frequently asked questions about flying from California to Belfast

  • 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
7,975 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