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Cheap flights from Ontario to Barcelona from $334

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

Air Canada Logo
1:20 pm - 9:35 amONT-BCN
35h 15m2 stops
Air Canada Logo
1:35 pm - 9:19 pmBCN-ONT
40h 44m2 stops
$534Air Canada
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Tue, Feb 10 - Tue, Feb 24
United Airlines Logo
1:53 pm - 2:00 pmONT-BCN
15h 07m1 stop
United Airlines Logo
3:15 pm - 10:30 pmBCN-ONT
16h 15m1 stop
$538United Airlines
Find Deal
Mon, Oct 6 - Wed, Oct 15
Iberia Logo
6:37 am - 8:50 amONT-BCN
17h 13m1 stop
Iberia Logo
7:55 pm - 9:57 pmBCN-ONT
35h 02m2 stops
$542Iberia
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Tue, Feb 10 - Tue, Feb 24
United Airlines Logo
1:53 pm - 2:00 pmONT-BCN
15h 07m1 stop
United Airlines Logo
4:00 pm - 10:52 pmBCN-ONT
15h 52m1 stop
$543United Airlines
Find Deal
Mon, Sep 29 - Tue, Oct 7
United Airlines Logo
7:00 am - 1:10 pmONT-BCN
22h 10m1 stop
United Airlines Logo
1:35 pm - 10:31 pmBCN-ONT
41h 56m2 stops
$545United Airlines
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Wed, Oct 29 - Wed, Nov 5
British Airways Logo
6:00 am - 8:50 amONT-BCN
17h 50m1 stop
British Airways Logo
10:10 am - 9:40 pmBCN-ONT
19h 30m2 stops
$567British Airways
Find Deal
Wed, Feb 25 - Fri, Mar 13
Iberia Logo
7:00 am - 5:10 pmONT-BCN
25h 10m2 stops
Iberia Logo
6:55 pm - 9:54 amBCN-ONT
23h 59m2 stops
$574Iberia
Find Deal
Fri, Nov 28 - Mon, Dec 8
British Airways Logo
6:00 am - 8:50 amONT-BCN
17h 50m1 stop
British Airways Logo
11:35 am - 9:40 pmBCN-ONT
18h 05m2 stops
$576British Airways
Find Deal
Tue, Feb 24 - Fri, Mar 20
Delta Logo
11:48 am - 5:10 pmONT-BCN
20h 22m2 stops
Delta Logo
6:00 am - 9:20 pmBCN-ONT
23h 20m2 stops
$589Delta
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Tue, Oct 14 - Wed, Oct 29
American Airlines Logo
6:10 am - 9:05 amONT-BCN
17h 55m2 stops
American Airlines Logo
10:45 am - 9:48 pmBCN-ONT
20h 03m2 stops
$687American Airlines
Find Deal
Thu, Sep 25 - Thu, Oct 2

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
Sep 21
ONT7:00 amOntario
21h 15m
1 stop
BCN1:15 pmBarcelona-El Prat
Oct 7
BCN4:00 pmBarcelona-El Prat
15h 52m
1 stop
ONT10:52 pmOntario
$503
Find similar
United Airlines
Sep 21
ONT7:00 amOntario
39h 50m
2 stops
BCN7:50 amBarcelona-El Prat
Oct 7
BCN4:00 pmBarcelona-El Prat
15h 52m
1 stop
ONT10:52 pmOntario
$536
Find similar
United Airlines
Oct 6
ONT1:53 pmOntario
15h 07m
1 stop
BCN2:00 pmBarcelona-El Prat
Oct 15
BCN3:15 pmBarcelona-El Prat
16h 15m
1 stop
ONT10:30 pmOntario
$538
Find similar

Iberia flights from Ontario to Barcelona-El Prat Airport

Our best Iberia deals on Ontario to Barcelona-El Prat Airport flight tickets
Iberia
Feb 10
ONT6:37 amOntario
17h 13m
1 stop
BCN8:50 amBarcelona-El Prat
Feb 24
BCN7:55 pmBarcelona-El Prat
35h 02m
2 stops
ONT9:57 pmOntario
$542
Find similar
Iberia
Nov 28
ONT7:00 amOntario
25h 10m
2 stops
BCN5:10 pmBarcelona-El Prat
Dec 8
BCN6:55 pmBarcelona-El Prat
23h 59m
2 stops
ONT9:54 amOntario
$574
Find similar
Iberia
Oct 4
ONT2:54 pmOntario
34h 16m
1 stop
BCN10:10 amBarcelona-El Prat
Oct 13
BCN9:10 pmBarcelona-El Prat
34h 32m
2 stops
ONT10:42 pmOntario
$612
Find similar

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 September 15, 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

Tue 2/10

1:20 pm-9:35 am

2 stops35h 15m

Barcelona-El Prat

Tue 2/24

1:35 pm-9:19 pm

2 stops40h 44m

$534

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 10/6

1:53 pm-2:00 pm

1 stop15h 07m

Barcelona-El Prat

Wed 10/15

3:15 pm-10:30 pm

1 stop16h 15m

$538

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Tue 2/10

6:37 am-8:50 am

1 stop17h 13m

Barcelona-El Prat

Tue 2/24

7:55 pm-9:57 pm

2 stops35h 02m

$542

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 9/29

1:53 pm-2:00 pm

1 stop15h 07m

Barcelona-El Prat

Tue 10/7

4:00 pm-10:52 pm

1 stop15h 52m

$543

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Wed 10/29

7:00 am-1:10 pm

1 stop22h 10m

Barcelona-El Prat

Wed 11/5

1:35 pm-10:31 pm

2 stops41h 56m

$545

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Wed 2/25

6:00 am-8:50 am

1 stop17h 50m

Barcelona-El Prat

Fri 3/13

10:10 am-9:40 pm

2 stops19h 30m

$567

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Fri 11/28

7:00 am-5:10 pm

2 stops25h 10m

Barcelona-El Prat

Mon 12/8

6:55 pm-9:54 am

2 stops23h 59m

$574

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Tue 2/24

6:00 am-8:50 am

1 stop17h 50m

Barcelona-El Prat

Fri 3/20

11:35 am-9:40 pm

2 stops18h 05m

$576

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Tue 10/14

11:48 am-5:10 pm

2 stops20h 22m

Barcelona-El Prat

Wed 10/29

6:00 am-9:20 pm

2 stops23h 20m

$589

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Thu 9/25

6:10 am-9:05 am

2 stops17h 55m

Barcelona-El Prat

Thu 10/2

10:45 am-9:48 pm

2 stops20h 03m

$687

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 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 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 $580, 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 $692.

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 $570. 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 Wednesday because tickets tend to average around $844. 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 $771 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 $1,061 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 1% 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. 15h 07m 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
6.6
7,361 reviews
Search British Airways flights
IberiaPriceFrom $605Free CancellationRating
7.0
2,924 reviews
Search Iberia flights
DeltaPriceFrom $609Free CancellationRating
7.9
7,954 reviews
Search Delta flights
United AirlinesPriceFrom $662Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
American AirlinesPriceFrom $687Free CancellationRating
7.2
10,000 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
Tarragona
El Prat de Llobregat
L'Hospitalet de Llobregat
Castelldefels
Santa Susanna
Calella
Cambrils
Cadaques
Empuriabrava
Pineda de Mar
Badalona
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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