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Cheap flights from California to Belfast from £210

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 14/4. 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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Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
17:35 - 21:15
SFO
-
BFS
19h 40m
2 stops
Multiple Airlines Logo
12:35 - 13:50
BFS
-
SFO
33h 15m
1 stop
£638Multiple Airlines
Fri, 15 May - Fri, 29 May
Multiple Airlines Logo
14:05 - 22:20
LAX
-
BFS
25h 15m
2 stops
Multiple Airlines Logo
10:15 - 12:10
BFS
-
LAX
32h 55m
2 stops
£729Multiple Airlines
Thu, 12 Mar - Thu, 19 Mar
Multiple Airlines Logo
08:30 - 23:20
LAX
-
BFS
30h 50m
3 stops
Multiple Airlines Logo
20:20 - 16:30
BFS
-
LAX
28h 10m
2 stops
£733Multiple Airlines
Tue, 14 Apr - Sun, 19 Apr
Multiple Airlines Logo
07:35 - 19:50
LAX
-
BFS
28h 15m
2 stops
Multiple Airlines Logo
20:20 - 16:30
BFS
-
LAX
28h 10m
2 stops
£736Multiple Airlines
Tue, 14 Apr - Sun, 19 Apr
Multiple Airlines Logo
08:30 - 23:20
LAX
-
BFS
30h 50m
3 stops
Multiple Airlines Logo
12:20 - 17:10
BFS
-
LAX
36h 50m
3 stops
£760Multiple Airlines
Tue, 14 Apr - Sun, 19 Apr
Multiple Airlines Logo
14:56 - 09:45
LAX
-
BFS
34h 49m
2 stops
Multiple Airlines Logo
18:00 - 14:20
BFS
-
LAX
28h 20m
1 stop
£764Multiple Airlines
Tue, 14 Apr - Sun, 19 Apr
Multiple Airlines Logo
17:35 - 22:20
SFO
-
BFS
20h 45m
2 stops
Multiple Airlines Logo
06:10 - 15:50
BFS
-
SFO
41h 40m
3 stops
£773Multiple Airlines
Wed, 29 Jul - Thu, 27 Aug
Multiple Airlines Logo
17:35 - 21:15
SFO
-
BFS
19h 40m
2 stops
Multiple Airlines Logo
08:55 - 17:35
BFS
-
SFO
40h 40m
3 stops
£784Multiple Airlines
Fri, 15 May - Fri, 29 May
Multiple Airlines Logo
17:35 - 21:15
SFO
-
BFS
19h 40m
2 stops
Multiple Airlines Logo
08:55 - 14:35
BFS
-
SFO
37h 40m
3 stops
£830Multiple Airlines
Fri, 15 May - Mon, 25 May
Multiple Airlines Logo
17:35 - 20:45
SFO
-
BFS
19h 10m
2 stops
Multiple Airlines Logo
21:25 - 15:50
BFS
-
SFO
26h 25m
2 stops
£831Multiple Airlines
Fri, 15 May - Mon, 25 May

momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 6 February 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

Fri 15/5

17:35-21:15

2 stops19h 40m

Belfast Intl

Fri 29/5

12:35-13:50

1 stop33h 15m

£638

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Thu 12/3

14:05-22:20

2 stops25h 15m

Belfast Intl

Thu 19/3

10:15-12:10

2 stops32h 55m

£729

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Tue 14/4

08:30-23:20

3 stops30h 50m

Belfast Intl

Sun 19/4

20:20-16:30

2 stops28h 10m

£733

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Tue 14/4

07:35-19:50

2 stops28h 15m

Belfast Intl

Sun 19/4

20:20-16:30

2 stops28h 10m

£736

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Tue 14/4

08:30-23:20

3 stops30h 50m

Belfast Intl

Sun 19/4

12:20-17:10

3 stops36h 50m

£760

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Tue 14/4

14:56-09:45

2 stops34h 49m

Belfast Intl

Sun 19/4

18:00-14:20

1 stop28h 20m

£764

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Wed 29/7

17:35-22:20

2 stops20h 45m

Belfast Intl

Thu 27/8

06:10-15:50

3 stops41h 40m

£773

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Fri 15/5

17:35-21:15

2 stops19h 40m

Belfast Intl

Fri 29/5

08:55-17:35

3 stops40h 40m

£784

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Fri 15/5

17:35-21:15

2 stops19h 40m

Belfast Intl

Mon 25/5

08:55-14:35

3 stops37h 40m

£830

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Fri 15/5

17:35-20:45

2 stops19h 10m

Belfast Intl

Mon 25/5

21:25-15:50

2 stops26h 25m

£831

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 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 £466. 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 £504.

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

    Prices for flights from California to Belfast Intl Airport refresh daily.

  • 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.

Travelling to a place near Belfast?

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

Why use momondo?

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

Finding the right flight to Belfast from California is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Belfast quick and easy, saving you time and money.

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

All flight searches from California to Belfast on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential California to Belfast flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Belfast from California 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.

An easier way to manage your Belfast Intl Airport trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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