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Cheap flights from Barcelona-El Prat Airport to Los Angeles from $433

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 5/22. 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

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
6:20 am - 10:34 pm
BCN
-
ONT
25h 14m
2 stops
Delta Logo
11:52 am - 5:10 pm
ONT
-
BCN
20h 18m
2 stops
$833Delta
Sat, May 16 - Wed, May 20
Delta Logo
11:00 am - 6:36 pm
BCN
-
ONT
16h 36m
1 stop
Delta Logo
11:52 am - 5:10 pm
ONT
-
BCN
20h 18m
2 stops
$835Delta
Sat, May 16 - Wed, May 20
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
$839KLM
Fri, May 15 - Sat, May 30
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
$840KLM
Fri, May 15 - Sat, May 30
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
$841KLM
Fri, May 15 - Sat, May 30
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
$842KLM
Fri, May 15 - Sat, May 30
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
$844KLM
Fri, May 15 - Sat, May 30
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
$848KLM
Thu, May 14 - Sat, May 30
Multiple Airlines Logo
11:00 am - 9:48 pm
BCN
-
ONT
19h 48m
1 stop
Multiple Airlines Logo
1:35 pm - 4:25 pm
ONT
-
BCN
17h 50m
2 stops
$882Multiple Airlines
Fri, May 15 - Sat, May 30
Multiple Airlines Logo
6:20 am - 5:10 pm
BCN
-
ONT
19h 50m
2 stops
Multiple Airlines Logo
11:50 am - 12:50 pm
ONT
-
BCN
16h 00m
1 stop
$883Multiple Airlines
Fri, May 29 - Sun, Jun 7

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United Airlines flights from Barcelona-El Prat Airport to Ontario

Our best United Airlines deals on Barcelona-El Prat Airport to Ontario flight tickets
United Airlines
May 29
BCN6:40 amBarcelona-El Prat
24h 57m
2 stops
ONT10:37 pmOntario
Jun 7
ONT6:05 amOntario
22h 10m
1 stop
BCN1:15 pmBarcelona-El Prat
$886
United Airlines
May 13
BCN6:40 amBarcelona-El Prat
20h 12m
2 stops
ONT5:52 pmOntario
Jun 7
ONT6:30 amOntario
21h 45m
1 stop
BCN1:15 pmBarcelona-El Prat
$887
United Airlines
Oct 1
BCN4:10 pmBarcelona-El Prat
15h 49m
1 stop
ONT10:59 pmOntario
Oct 15
ONT9:39 amOntario
19h 41m
1 stop
BCN2:20 pmBarcelona-El Prat
$897

Avianca flights from Barcelona-El Prat Airport to Ontario

Our best Avianca deals on Barcelona-El Prat Airport to Ontario flight tickets
Avianca
May 8
BCN1:50 pmBarcelona-El Prat
40h 55m
2 stops
ONT9:45 pmOntario
May 23
ONT11:35 pmOntario
48h 10m
2 stops
BCN8:45 amBarcelona-El Prat
$877
Avianca
Oct 26
BCN12:50 pmBarcelona-El Prat
41h 05m
2 stops
ONT9:55 pmOntario
Nov 3
ONT10:30 pmOntario
24h 10m
2 stops
BCN7:40 amBarcelona-El Prat
$979
Avianca
Oct 26
BCN12:50 pmBarcelona-El Prat
41h 05m
2 stops
ONT9:55 pmOntario
Nov 7
ONT10:30 pmOntario
48h 10m
2 stops
BCN7:40 amBarcelona-El Prat
$980

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 May 3, 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

Sat 5/16

6:20 am-10:34 pm

2 stops25h 14m

Ontario

Wed 5/20

11:52 am-5:10 pm

2 stops20h 18m

$833

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Sat 5/16

11:00 am-6:36 pm

1 stop16h 36m

Ontario

Wed 5/20

11:52 am-5:10 pm

2 stops20h 18m

$835
Quickest round-trip

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Fri 5/15

11:00 am-6:36 pm

1 stop16h 36m

Ontario

Sat 5/30

11:52 am-11:10 am

1 stop14h 18m

$839

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Fri 5/15

11:00 am-6:36 pm

1 stop16h 36m

Ontario

Sat 5/30

11:52 am-11:10 am

1 stop14h 18m

$840

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Fri 5/15

11:00 am-6:36 pm

1 stop16h 36m

Ontario

Sat 5/30

11:52 am-11:10 am

1 stop14h 18m

$841

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Fri 5/15

11:00 am-6:36 pm

1 stop16h 36m

Ontario

Sat 5/30

11:52 am-11:10 am

1 stop14h 18m

$842

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Fri 5/15

11:00 am-6:36 pm

1 stop16h 36m

Ontario

Sat 5/30

11:52 am-11:10 am

1 stop14h 18m

$844

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Thu 5/14

11:00 am-6:36 pm

1 stop16h 36m

Ontario

Sat 5/30

11:52 am-11:10 am

1 stop14h 18m

$848

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Fri 5/15

11:00 am-9:48 pm

1 stop19h 48m

Ontario

Sat 5/30

1:35 pm-4:25 pm

2 stops17h 50m

$882

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Fri 5/29

6:20 am-5:10 pm

2 stops19h 50m

Ontario

Sun 6/7

11:50 am-12:50 pm

1 stop16h 00m

$883

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 61% 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 48m

Direct flights

None
The fastest flight from Barcelona-El Prat Airport to Ontario takes 15h 48m
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

Frequently asked questions about flying from Barcelona-El Prat Airport to Ontario

  • 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 48m, 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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