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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 5/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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
8:30 am - 8:25 pm
SFO
-
BFS
28h 55m
3 stops
Multiple Airlines Logo
7:05 am - 8:35 pm
BFS
-
SFO
20h 30m
2 stops
$926Multiple Airlines
Thu, Mar 19 - Thu, Mar 26
Multiple Airlines Logo
3:40 pm - 8:25 pm
SFO
-
BFS
21h 45m
2 stops
Multiple Airlines Logo
7:05 am - 8:35 pm
BFS
-
SFO
20h 30m
2 stops
$955Multiple Airlines
Thu, Mar 19 - Thu, Mar 26
Multiple Airlines Logo
1:01 am - 10:20 pm
LAS
-
BFS
38h 19m
3 stops
Multiple Airlines Logo
6:15 am - 6:50 pm
BFS
-
LAS
19h 35m
2 stops
$975Multiple Airlines
Wed, Mar 18 - Thu, Mar 26
Multiple Airlines Logo
2:05 pm - 10:20 pm
LAX
-
BFS
25h 15m
2 stops
Multiple Airlines Logo
10:15 am - 12:10 pm
BFS
-
LAX
32h 55m
2 stops
$990Multiple Airlines
Thu, Mar 12 - Thu, Mar 19
Multiple Airlines Logo
8:35 pm - 8:25 pm
LAS
-
BFS
16h 50m
2 stops
Multiple Airlines Logo
6:15 am - 6:50 pm
BFS
-
LAS
19h 35m
2 stops
$1,044Multiple Airlines
Thu, Mar 19 - Thu, Mar 26
Multiple Airlines Logo
5:35 pm - 10:20 pm
SFO
-
BFS
20h 45m
2 stops
Multiple Airlines Logo
6:10 am - 3:50 pm
BFS
-
SFO
41h 40m
3 stops
$1,050Multiple Airlines
Wed, Jul 29 - Thu, Aug 27
Multiple Airlines Logo
5:35 pm - 9:15 pm
SFO
-
BFS
19h 40m
2 stops
Multiple Airlines Logo
8:55 am - 2:35 pm
BFS
-
SFO
37h 40m
3 stops
$1,128Multiple Airlines
Fri, May 15 - Mon, May 25
Multiple Airlines Logo
5:35 pm - 8:45 pm
SFO
-
BFS
19h 10m
2 stops
Multiple Airlines Logo
9:25 pm - 3:50 pm
BFS
-
SFO
26h 25m
2 stops
$1,129Multiple Airlines
Fri, May 15 - Mon, May 25
Multiple Airlines Logo
8:15 am - 11:45 pm
LAX
-
BFS
32h 30m
3 stops
Multiple Airlines Logo
9:25 pm - 4:15 pm
BFS
-
LAX
25h 50m
3 stops
$1,143Multiple Airlines
Thu, Mar 12 - Thu, Mar 19
Multiple Airlines Logo
5:35 pm - 10:20 pm
SFO
-
BFS
20h 45m
2 stops
Multiple Airlines Logo
7:40 pm - 12:40 pm
BFS
-
SFO
25h 00m
2 stops
$1,151Multiple Airlines
Wed, Jul 29 - Thu, Aug 27

momondo Fare Finder

 
Customize your flight search to find flights from California to Belfast Intl Airport 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 February 3, 2026.
Use the filters below to find and compare flights from California to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Thu 3/19

8:30 am-8:25 pm

3 stops28h 55m

Belfast Intl

Thu 3/26

7:05 am-8:35 pm

2 stops20h 30m

$926

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Thu 3/19

3:40 pm-8:25 pm

2 stops21h 45m

Belfast Intl

Thu 3/26

7:05 am-8:35 pm

2 stops20h 30m

$955

Las VegasBelfast

LAS - BFS

LASBFS

Las Vegas Harry Reid Intl

Wed 3/18

1:01 am-10:20 pm

3 stops38h 19m

Belfast Intl

Thu 3/26

6:15 am-6:50 pm

2 stops19h 35m

$975

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Thu 3/12

2:05 pm-10:20 pm

2 stops25h 15m

Belfast Intl

Thu 3/19

10:15 am-12:10 pm

2 stops32h 55m

$990

Las VegasBelfast

LAS - BFS

LASBFS

Las Vegas Harry Reid Intl

Thu 3/19

8:35 pm-8:25 pm

2 stops16h 50m

Belfast Intl

Thu 3/26

6:15 am-6:50 pm

2 stops19h 35m

$1,044

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Wed 7/29

5:35 pm-10:20 pm

2 stops20h 45m

Belfast Intl

Thu 8/27

6:10 am-3:50 pm

3 stops41h 40m

$1,050

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Fri 5/15

5:35 pm-9:15 pm

2 stops19h 40m

Belfast Intl

Mon 5/25

8:55 am-2:35 pm

3 stops37h 40m

$1,128

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Fri 5/15

5:35 pm-8:45 pm

2 stops19h 10m

Belfast Intl

Mon 5/25

9:25 pm-3:50 pm

2 stops26h 25m

$1,129

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Thu 3/12

8:15 am-11:45 pm

3 stops32h 30m

Belfast Intl

Thu 3/19

9:25 pm-4:15 pm

3 stops25h 50m

$1,143

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Wed 7/29

5:35 pm-10:20 pm

2 stops20h 45m

Belfast Intl

Thu 8/27

7:40 pm-12:40 pm

2 stops25h 00m

$1,151

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
1
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See travel insights to Belfast from

How to get the cheapest flight ticket from California to Belfast Intl Airport

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 Intl Airport?

The month of October is, on average, the cheapest month to fly to Belfast Intl Airport from California, with most prices found around $633. If you’re not able to fly to Belfast Intl Airport in October, then February is your next best option. Flight prices from California to Belfast Intl Airport during February average around $685.

Cheap California to Belfast Intl Airport flight deals and tips

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

Fastest flight time

13h 50m

Direct flights

None
The fastest flight from California to Belfast Intl Airport takes 13h 50m
There are no direct flights from California to Belfast Intl Airport. There are no popular flight routes from California to Belfast Intl Airport.
Search flight deals

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

    Prices for flights from California to Belfast Intl Airport are updated daily.

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

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

    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 Intl Airport.

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

    The travel and health documents you'll need for your trip to Belfast Intl Airport 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 Intl Airport. 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 Intl Airport

Compare and see reviews for airlines that fly from California to Belfast Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $586Free CancellationRating
6.7
7,712 reviews
Search British Airways flights

Traveling to a place near Belfast?

Book flights to Belfast if you plan to visit one of these locations
Armagh
Cookstown
Ballymena
Newry
Dungannon

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 for California to Belfast flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for California to Belfast flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Belfast Intl Airport trip

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