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Cheap flights from Barcelona-El Prat Airport to Los Angeles from $369

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Barcelona-El Prat Airport to Los Angeles departing on 5/8. 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 Barcelona-El Prat Airport to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
11:10 am - 11:47 am
BCN
-
ONT
33h 37m
2 stops
Delta Logo
2:20 pm - 5:10 pm
ONT
-
BCN
17h 50m
2 stops
$744Delta
Tue, Apr 7 - Tue, Apr 14
KLM Logo
11:00 am - 6:36 pm
BCN
-
ONT
16h 36m
1 stop
KLM Logo
11:52 am - 11:10 am
ONT
-
BCN
14h 18m
1 stop
$752KLM
Fri, May 22 - Thu, Jun 4
United Airlines Logo
8:00 am - 8:36 pm
BCN
-
ONT
21h 36m
2 stops
United Airlines Logo
7:00 am - 9:00 am
ONT
-
BCN
17h 00m
2 stops
$773United Airlines
Fri, Apr 3 - Sat, Apr 18
United Airlines Logo
6:40 am - 5:47 pm
BCN
-
ONT
20h 07m
2 stops
United Airlines Logo
1:30 pm - 2:20 pm
ONT
-
BCN
15h 50m
1 stop
$775United Airlines
Wed, Apr 8 - Fri, May 8
United Airlines Logo
10:15 am - 8:36 pm
BCN
-
ONT
19h 21m
2 stops
United Airlines Logo
1:30 pm - 2:20 pm
ONT
-
BCN
15h 50m
1 stop
$777United Airlines
Tue, Mar 31 - Sun, May 3
Lufthansa Logo
8:00 am - 9:50 pm
BCN
-
ONT
22h 50m
2 stops
Lufthansa Logo
6:45 pm - 10:25 pm
ONT
-
BCN
18h 40m
2 stops
$778Lufthansa
Fri, Apr 3 - Fri, Apr 17
United Airlines Logo
8:00 am - 8:36 pm
BCN
-
ONT
21h 36m
2 stops
United Airlines Logo
1:34 pm - 3:35 pm
ONT
-
BCN
17h 01m
2 stops
$780United Airlines
Thu, Apr 2 - Wed, Apr 8
KLM Logo
9:20 am - 10:34 pm
BCN
-
ONT
22h 14m
2 stops
KLM Logo
5:05 pm - 6:50 pm
ONT
-
BCN
16h 45m
2 stops
$781KLM
Thu, Apr 9 - Wed, Apr 22
United Airlines Logo
12:00 pm - 10:35 pm
BCN
-
ONT
19h 35m
2 stops
United Airlines Logo
7:00 am - 9:00 am
ONT
-
BCN
17h 00m
2 stops
$784United Airlines
Fri, May 1 - Tue, May 5
British Airways Logo
10:45 am - 6:37 pm
BCN
-
ONT
16h 52m
1 stop
British Airways Logo
7:30 am - 7:35 am
ONT
-
BCN
15h 05m
1 stop
$785British Airways
Fri, Apr 17 - Fri, Apr 24

Lufthansa flights from Barcelona-El Prat Airport to Ontario

Our best Lufthansa deals on Barcelona-El Prat Airport to Ontario flight tickets
Lufthansa
Apr 3
BCN8:00 amBarcelona-El Prat
22h 50m
2 stops
ONT9:50 pmOntario
Apr 17
ONT6:45 pmOntario
18h 40m
2 stops
BCN10:25 pmBarcelona-El Prat
$778
Lufthansa
Apr 3
BCN6:40 amBarcelona-El Prat
25h 05m
2 stops
ONT10:45 pmOntario
Apr 17
ONT1:27 pmOntario
23h 58m
2 stops
BCN10:25 pmBarcelona-El Prat
$813

KLM flights from Barcelona-El Prat Airport to Ontario

Our best KLM deals on Barcelona-El Prat Airport to Ontario flight tickets
KLM
May 22
BCN11:00 amBarcelona-El Prat
16h 36m
1 stop
ONT6:36 pmOntario
Jun 4
ONT11:52 amOntario
14h 18m
1 stop
BCN11:10 amBarcelona-El Prat
$752
KLM
Apr 9
BCN9:20 amBarcelona-El Prat
22h 14m
2 stops
ONT10:34 pmOntario
Apr 22
ONT5:05 pmOntario
16h 45m
2 stops
BCN6:50 pmBarcelona-El Prat
$781
KLM
May 8
BCN6:20 amBarcelona-El Prat
19h 50m
2 stops
ONT5:10 pmOntario
May 22
ONT1:35 pmOntario
36h 35m
1 stop
BCN11:10 amBarcelona-El Prat
$790

momondo Fare Finder

 
Customize your flight search to find flights from Barcelona-El Prat Airport to Ontario 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 12, 2026.
Use the filters below to find and compare flights from Barcelona-El Prat Airport to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Tue 4/7

11:10 am-11:47 am

2 stops33h 37m

Ontario

Tue 4/14

2:20 pm-5:10 pm

2 stops17h 50m

$744
Quickest round-trip

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Fri 5/22

11:00 am-6:36 pm

1 stop16h 36m

Ontario

Thu 6/4

11:52 am-11:10 am

1 stop14h 18m

$752

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Fri 4/3

8:00 am-8:36 pm

2 stops21h 36m

Ontario

Sat 4/18

7:00 am-9:00 am

2 stops17h 00m

$773

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Wed 4/8

6:40 am-5:47 pm

2 stops20h 07m

Ontario

Fri 5/8

1:30 pm-2:20 pm

1 stop15h 50m

$775

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Tue 3/31

10:15 am-8:36 pm

2 stops19h 21m

Ontario

Sun 5/3

1:30 pm-2:20 pm

1 stop15h 50m

$777

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Fri 4/3

8:00 am-9:50 pm

2 stops22h 50m

Ontario

Fri 4/17

6:45 pm-10:25 pm

2 stops18h 40m

$778

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Thu 4/2

8:00 am-8:36 pm

2 stops21h 36m

Ontario

Wed 4/8

1:34 pm-3:35 pm

2 stops17h 01m

$780

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Thu 4/9

9:20 am-10:34 pm

2 stops22h 14m

Ontario

Wed 4/22

5:05 pm-6:50 pm

2 stops16h 45m

$781

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Fri 5/1

12:00 pm-10:35 pm

2 stops19h 35m

Ontario

Tue 5/5

7:00 am-9:00 am

2 stops17h 00m

$784

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Fri 4/17

10:45 am-6:37 pm

1 stop16h 52m

Ontario

Fri 4/24

7:30 am-7:35 am

1 stop15h 05m

$785

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Barcelona-El Prat Airport to Ontario

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

Can stopping save me money on Barcelona-El Prat Airport to Ontario flights?

You could potentially save up to 24% on your flight if you consider stops on a Barcelona-El Prat Airport to Ontario flight.

When to book flights from Barcelona-El Prat Airport to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Barcelona-El Prat Airport to Ontario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Barcelona-El Prat Airport to Ontario (BCN to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Barcelona-El Prat Airport to Ontario

Fastest flight time

15h 27m

Direct flights

None
The fastest flight from Barcelona-El Prat Airport to Ontario takes 15h 27m
There are no direct flights from Barcelona-El Prat Airport to Ontario. There are no popular flight routes from Barcelona-El Prat Airport to Ontario.
Search flight deals

  • How far is Barcelona-El Prat to Ontario by plane?

    The distance between Barcelona-El Prat and Ontario is about 5972.8 mi. Flights usually cover this in 15h 27m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Barcelona-El Prat Airport to Ontario Airport?

    Prices for flights from Barcelona-El Prat Airport to Ontario Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Barcelona-El Prat Airport to Ontario Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Barcelona-El Prat Airport to Ontario Airport.

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

    The necessary travel and health documents for your Ontario Airport 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.

Why use momondo?

Why should I use momondo to find a flight deal from Barcelona to Ontario?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Barcelona to Ontario. momondo saves you time and could save you money on your trip.

Can I find flights from Barcelona to Ontario with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Ontario from Barcelona with this policy.

How can momondo help me find flights from Barcelona to Ontario?

momondo provides multiple filters to help you find the best flight to Ontario from Barcelona. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Ontario from Barcelona 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.

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