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Cheap flights from Ontario to Barcelona from $464

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Barcelona departing on 9/30. 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 Ontario to Barcelona

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:55 am - 10:10 pm
ONT
-
BCN
26h 15m
2 stops
Multiple Airlines Logo
8:00 am - 7:35 pm
BCN
-
ONT
20h 35m
2 stops
$885Multiple Airlines
Tue, May 12 - Tue, May 26
Multiple Airlines Logo
11:05 am - 10:10 pm
ONT
-
BCN
26h 05m
2 stops
Multiple Airlines Logo
8:00 am - 10:15 pm
BCN
-
ONT
23h 15m
2 stops
$944Multiple Airlines
Sun, May 3 - Tue, May 19
Multiple Airlines Logo
12:00 pm - 11:15 pm
ONT
-
BCN
26h 15m
2 stops
Multiple Airlines Logo
7:40 am - 11:09 am
BCN
-
ONT
36h 29m
2 stops
$994Multiple Airlines
Wed, Oct 7 - Sun, Oct 18
Multiple Airlines Logo
7:10 am - 4:05 pm
ONT
-
BCN
23h 55m
2 stops
Multiple Airlines Logo
8:00 am - 8:19 pm
BCN
-
ONT
21h 19m
2 stops
$1,027Multiple Airlines
Thu, Aug 20 - Mon, Aug 31
British Airways Logo
10:25 am - 10:10 am
ONT
-
BCN
14h 45m
1 stop
British Airways Logo
1:30 pm - 9:08 pm
BCN
-
ONT
16h 38m
1 stop
$1,060British Airways
Wed, Sep 23 - Thu, Oct 8
British Airways Logo
10:25 am - 10:10 am
ONT
-
BCN
14h 45m
1 stop
British Airways Logo
1:30 pm - 9:08 pm
BCN
-
ONT
16h 38m
1 stop
$1,061British Airways
Sun, Sep 20 - Tue, Oct 6
British Airways Logo
2:22 pm - 7:35 pm
ONT
-
BCN
20h 13m
2 stops
British Airways Logo
1:30 pm - 9:08 pm
BCN
-
ONT
16h 38m
1 stop
$1,063British Airways
Sun, Oct 11 - Wed, Oct 21
Multiple Airlines Logo
2:10 pm - 10:10 pm
ONT
-
BCN
23h 00m
2 stops
Multiple Airlines Logo
8:00 am - 8:19 pm
BCN
-
ONT
21h 19m
2 stops
$1,064Multiple Airlines
Tue, Aug 25 - Sat, Sep 5
British Airways Logo
2:22 pm - 5:35 pm
ONT
-
BCN
18h 13m
2 stops
British Airways Logo
8:35 pm - 5:47 pm
BCN
-
ONT
30h 12m
2 stops
$1,065British Airways
Mon, Oct 5 - Mon, Oct 19
Delta Logo
12:00 pm - 12:50 pm
ONT
-
BCN
15h 50m
1 stop
Delta Logo
11:00 am - 10:14 pm
BCN
-
ONT
20h 14m
1 stop
$1,066Delta
Tue, Sep 22 - Tue, Oct 6

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Delta flights from Ontario to Barcelona-El Prat Airport

Our best Delta deals on Ontario to Barcelona-El Prat Airport flight tickets
Delta
Sep 22
ONT12:00 pmOntario
15h 50m
1 stop
BCN12:50 pmBarcelona-El Prat
Oct 6
BCN11:00 amBarcelona-El Prat
20h 14m
1 stop
ONT10:14 pmOntario
$1,066
Delta
Oct 9
ONT10:59 pmOntario
48h 36m
2 stops
BCN8:35 amBarcelona-El Prat
Oct 21
BCN3:15 pmBarcelona-El Prat
29h 12m
2 stops
ONT11:27 amOntario
$1,087
Delta
May 19
ONT6:45 amOntario
19h 25m
1 stop
BCN11:10 amBarcelona-El Prat
May 27
BCN11:00 amBarcelona-El Prat
16h 36m
1 stop
ONT6:36 pmOntario
$1,121

United Airlines flights from Ontario to Barcelona-El Prat Airport

Our best United Airlines deals on Ontario to Barcelona-El Prat Airport flight tickets
United Airlines
Oct 14
ONT1:49 pmOntario
15h 31m
1 stop
BCN2:20 pmBarcelona-El Prat
Oct 28
BCN9:55 amBarcelona-El Prat
21h 11m
2 stops
ONT11:06 pmOntario
$1,070
United Airlines
May 6
ONT1:30 pmOntario
15h 50m
1 stop
BCN2:20 pmBarcelona-El Prat
Oct 7
BCN4:10 pmBarcelona-El Prat
15h 56m
1 stop
ONT11:06 pmOntario
$1,110
United Airlines
Oct 10
ONT6:05 amOntario
23h 15m
1 stop
BCN2:20 pmBarcelona-El Prat
Oct 21
BCN4:10 pmBarcelona-El Prat
15h 49m
1 stop
ONT10:59 pmOntario
$1,116

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 April 20, 2026.
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

Cheapest round-trip

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Tue 5/12

10:55 am-10:10 pm

2 stops26h 15m

Barcelona-El Prat

Tue 5/26

8:00 am-7:35 pm

2 stops20h 35m

$885

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sun 5/3

11:05 am-10:10 pm

2 stops26h 05m

Barcelona-El Prat

Tue 5/19

8:00 am-10:15 pm

2 stops23h 15m

$944

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Wed 10/7

12:00 pm-11:15 pm

2 stops26h 15m

Barcelona-El Prat

Sun 10/18

7:40 am-11:09 am

2 stops36h 29m

$994

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Thu 8/20

7:10 am-4:05 pm

2 stops23h 55m

Barcelona-El Prat

Mon 8/31

8:00 am-8:19 pm

2 stops21h 19m

$1,027
Quickest round-trip

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Wed 9/23

10:25 am-10:10 am

1 stop14h 45m

Barcelona-El Prat

Thu 10/8

1:30 pm-9:08 pm

1 stop16h 38m

$1,060

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sun 9/20

10:25 am-10:10 am

1 stop14h 45m

Barcelona-El Prat

Tue 10/6

1:30 pm-9:08 pm

1 stop16h 38m

$1,061

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sun 10/11

2:22 pm-7:35 pm

2 stops20h 13m

Barcelona-El Prat

Wed 10/21

1:30 pm-9:08 pm

1 stop16h 38m

$1,063

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Tue 8/25

2:10 pm-10:10 pm

2 stops23h 00m

Barcelona-El Prat

Sat 9/5

8:00 am-8:19 pm

2 stops21h 19m

$1,064

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 10/5

2:22 pm-5:35 pm

2 stops18h 13m

Barcelona-El Prat

Mon 10/19

8:35 pm-5:47 pm

2 stops30h 12m

$1,065

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Tue 9/22

12:00 pm-12:50 pm

1 stop15h 50m

Barcelona-El Prat

Tue 10/6

11:00 am-10:14 pm

1 stop20h 14m

$1,066

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Barcelona from

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 typical price of a round-trip flight between Ontario and Barcelona-El Prat Airport?

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 $676. 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 Thursday because tickets tend to average around $834. 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 afternoon is the least expensive time of day to depart. momondo users have found prices as low as $704 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $802 on average. Flights to Barcelona-El Prat Airport from Ontario in the evening 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 4% 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

Fastest flight time

13h 43m

Direct flights

None
The fastest flight from Ontario to Barcelona-El Prat Airport takes 13h 43m
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.
Search flight deals

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

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

    Barcelona-El Prat is 5972.8 mi away from Ontario. 13h 43m 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
IberiaPriceFrom $587Free CancellationRating
7.0
3,185 reviews
Search Iberia flights
United AirlinesPriceFrom $682Free CancellationRating
7.4
9,607 reviews
Search United Airlines flights
British AirwaysPriceFrom $747Free CancellationRating
6.7
7,895 reviews
Search British Airways flights

Traveling to a place near Barcelona?

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

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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