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Cheap flights from Ontario to Barcelona from $572

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Barcelona departing on 11/28. 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 Ontario to Barcelona

Cheap round-trip flights

Enter your travel dates to find the best prices.
Iberia Logo
7:00 am - 9:20 pmONT-BCN
29h 20m2 stops
Iberia Logo
9:45 am - 10:28 pmBCN-ONT
21h 43m2 stops
$572Iberia
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Fri, Nov 28 - Fri, Dec 5
United Airlines Logo
7:00 am - 1:10 pmONT-BCN
21h 10m1 stop
United Airlines Logo
1:35 pm - 10:31 pmBCN-ONT
41h 56m2 stops
$660United Airlines
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Sun, Nov 9 - Thu, Nov 20
United Airlines Logo
7:00 am - 9:00 amONT-BCN
17h 00m2 stops
United Airlines Logo
1:35 pm - 10:31 pmBCN-ONT
41h 56m2 stops
$664United Airlines
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Tue, Nov 18 - Tue, Nov 25
American Airlines Logo
4:49 pm - 7:05 pmONT-BCN
18h 16m2 stops
American Airlines Logo
12:30 pm - 9:57 amBCN-ONT
30h 27m2 stops
$670American Airlines
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Sun, Oct 26 - Tue, Nov 11
Delta Logo
1:15 pm - 7:40 amONT-BCN
34h 25m2 stops
Delta Logo
10:55 am - 11:52 pmBCN-ONT
21h 57m2 stops
$673Delta
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Sun, Oct 26 - Tue, Nov 11
Delta Logo
7:05 am - 8:40 amONT-BCN
16h 35m1 stop
Delta Logo
10:55 am - 7:50 pmBCN-ONT
17h 55m1 stop
$674Delta
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Sun, Dec 7 - Tue, Dec 23
Delta Logo
10:25 pm - 8:40 amONT-BCN
25h 15m1 stop
Delta Logo
10:55 am - 7:39 pmBCN-ONT
17h 44m1 stop
$676Delta
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Sun, Nov 30 - Tue, Dec 16
Delta Logo
10:25 pm - 8:40 amONT-BCN
25h 15m1 stop
Delta Logo
10:55 am - 11:04 pmBCN-ONT
21h 09m1 stop
$677Delta
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Sun, Nov 30 - Tue, Dec 16
British Airways Logo
7:16 am - 8:50 amONT-BCN
16h 34m1 stop
British Airways Logo
10:40 am - 5:51 pmBCN-ONT
16h 11m1 stop
$711British Airways
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Wed, Feb 11 - Wed, Feb 25
British Airways Logo
10:58 am - 8:50 amONT-BCN
12h 52m1 stop
British Airways Logo
10:40 am - 5:51 pmBCN-ONT
16h 11m1 stop
$713British Airways
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Wed, Feb 11 - Wed, Feb 18

Delta flights from Ontario to Barcelona-El Prat Airport

Our best Delta deals on Ontario to Barcelona-El Prat Airport flight tickets
Delta
Oct 26
ONT1:15 pmOntario
34h 25m
2 stops
BCN7:40 amBarcelona-El Prat
Nov 11
BCN10:55 amBarcelona-El Prat
21h 57m
2 stops
ONT11:52 pmOntario
$673
Find similar
Delta
Dec 7
ONT7:05 amOntario
16h 35m
1 stop
BCN8:40 amBarcelona-El Prat
Dec 23
BCN10:55 amBarcelona-El Prat
17h 55m
1 stop
ONT7:50 pmOntario
$674
Find similar
Delta
Nov 30
ONT10:25 pmOntario
25h 15m
1 stop
BCN8:40 amBarcelona-El Prat
Dec 16
BCN10:55 amBarcelona-El Prat
17h 44m
1 stop
ONT7:39 pmOntario
$676
Find similar

British Airways flights from Ontario to Barcelona-El Prat Airport

Our best British Airways deals on Ontario to Barcelona-El Prat Airport flight tickets
British Airways
Feb 11
ONT7:16 amOntario
16h 34m
1 stop
BCN8:50 amBarcelona-El Prat
Feb 25
BCN10:40 amBarcelona-El Prat
16h 11m
1 stop
ONT5:51 pmOntario
$711
Find similar
British Airways
Feb 11
ONT10:58 amOntario
12h 52m
1 stop
BCN8:50 amBarcelona-El Prat
Feb 18
BCN10:40 amBarcelona-El Prat
16h 11m
1 stop
ONT5:51 pmOntario
$713
Find similar
British Airways
Jan 5
ONT4:47 pmOntario
16h 08m
2 stops
BCN5:55 pmBarcelona-El Prat
Jan 16
BCN10:40 amBarcelona-El Prat
21h 09m
1 stop
ONT10:49 pmOntario
$719
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momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Barcelona-El Prat 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 October 16, 2025.
Use the filters below to find and compare flights from Ontario to Barcelona-El Prat Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Fri 11/28

7:00 am-9:20 pm

2 stops29h 20m

Barcelona-El Prat

Fri 12/5

9:45 am-10:28 pm

2 stops21h 43m

$572

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sun 11/9

7:00 am-1:10 pm

1 stop21h 10m

Barcelona-El Prat

Thu 11/20

1:35 pm-10:31 pm

2 stops41h 56m

$660

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Tue 11/18

7:00 am-9:00 am

2 stops17h 00m

Barcelona-El Prat

Tue 11/25

1:35 pm-10:31 pm

2 stops41h 56m

$664

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sun 10/26

4:49 pm-7:05 pm

2 stops18h 16m

Barcelona-El Prat

Tue 11/11

12:30 pm-9:57 am

2 stops30h 27m

$670

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sun 10/26

1:15 pm-7:40 am

2 stops34h 25m

Barcelona-El Prat

Tue 11/11

10:55 am-11:52 pm

2 stops21h 57m

$673

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sun 12/7

7:05 am-8:40 am

1 stop16h 35m

Barcelona-El Prat

Tue 12/23

10:55 am-7:50 pm

1 stop17h 55m

$674

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sun 11/30

10:25 pm-8:40 am

1 stop25h 15m

Barcelona-El Prat

Tue 12/16

10:55 am-7:39 pm

1 stop17h 44m

$676

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sun 11/30

10:25 pm-8:40 am

1 stop25h 15m

Barcelona-El Prat

Tue 12/16

10:55 am-11:04 pm

1 stop21h 09m

$677

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Wed 2/11

7:16 am-8:50 am

1 stop16h 34m

Barcelona-El Prat

Wed 2/25

10:40 am-5:51 pm

1 stop16h 11m

$711

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Wed 2/11

10:58 am-8:50 am

1 stop12h 52m

Barcelona-El Prat

Wed 2/18

10:40 am-5:51 pm

1 stop16h 11m

$713

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Ontario to Barcelona-El Prat 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 Barcelona-El Prat Airport?

The cheapest month to fly to Barcelona-El Prat Airport from Ontario is in January. Flight prices, which tend to average around $540, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Barcelona-El Prat Airport from Ontario during March instead. Flights to Barcelona-El Prat Airport in March, while not as cheap as those in January, still average around $688.

What is the cheapest day to depart on your flight to Barcelona-El Prat Airport?

The cheapest day to depart on your flight to Barcelona-El Prat Airport is on a Tuesday when prices can be found for as low as $583. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $837. These prices are subject to change though, so be sure to set up a Price Alert for flights to Barcelona-El Prat Airport.

What is the cheapest time of day to depart on your flight to Barcelona-El Prat Airport?

Flying to Barcelona-El Prat Airport from Ontario in the evening is the least expensive time of day to depart. momondo users have found prices as low as $775 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,071 on average. Flights to Barcelona-El Prat Airport from Ontario in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You could potentially save up to 66% on your flight if you consider stops on a Ontario to Barcelona-El Prat Airport flight.

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

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

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

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

Direct flights

None
There are no direct flights from Ontario to Barcelona-El Prat Airport. There are no popular flight routes from Ontario to Barcelona-El Prat Airport.
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  • How far is Ontario to Barcelona-El Prat by plane?

    Barcelona-El Prat is 5972.8 mi away from Ontario. 12h 52m is a normal flight duration for this route.

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

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

  • How many operators does momondo search for flights from Ontario Airport to Barcelona-El Prat Airport?

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

  • What documentation or ID do you need to fly to Barcelona-El Prat Airport?

    The required travel and health documents for your Barcelona-El Prat Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Barcelona-El Prat Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Ontario to Barcelona-El Prat Airport?

Best airlines flying from Ontario to Barcelona-El Prat Airport

Compare and see reviews for airlines that fly from Ontario to Barcelona-El Prat Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $544Free CancellationRating
6.7
7,457 reviews
Search British Airways flights
IberiaPriceFrom $605Free CancellationRating
7.0
2,994 reviews
Search Iberia flights
DeltaPriceFrom $609Free CancellationRating
7.9
7,980 reviews
Search Delta flights
United AirlinesPriceFrom $682Free CancellationRating
7.4
8,982 reviews
Search United Airlines flights
American AirlinesPriceFrom $687Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights

Traveling to a place near Barcelona?

Book flights to Barcelona if you plan to visit one of these locations
Lloret de Mar
Sitges
Salou
Tossa de Mar
Castelldefels
El Prat de Llobregat
L'Hospitalet de Llobregat
Tarragona
Santa Susanna
Cambrils
Cadaques
Empuriabrava
Badalona
Pineda de Mar
Calella
Roses
Pals
Malgrat de Mar
Palafrugell
Tortosa

Why use momondo?

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

It is quick and easy to find Ontario to Barcelona 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 Barcelona that suits you.

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

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Barcelona.

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

Of course. momondo tracks the price of Ontario to Barcelona flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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