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Cheap flights from Ontario to Barcelona from $391

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 7/21. 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.
KLM Logo
12:02 pm - 11:10 am
ONT
-
BCN
14h 08m
1 stop
KLM Logo
11:00 am - 6:23 pm
BCN
-
ONT
16h 23m
1 stop
$706KLM
Tue, Jun 30 - Wed, Jul 8
Multiple Airlines Logo
7:10 am - 10:10 pm
ONT
-
BCN
30h 00m
2 stops
Multiple Airlines Logo
8:00 am - 10:35 pm
BCN
-
ONT
23h 35m
2 stops
$909Multiple Airlines
Thu, Aug 20 - Thu, Sep 3
Multiple Airlines Logo
11:15 am - 4:00 pm
ONT
-
BCN
19h 45m
2 stops
Multiple Airlines Logo
8:00 am - 11:51 pm
BCN
-
ONT
24h 51m
2 stops
$916Multiple Airlines
Mon, Jun 1 - Thu, Jun 11
Multiple Airlines Logo
7:00 am - 4:00 pm
ONT
-
BCN
24h 00m
2 stops
Multiple Airlines Logo
8:00 am - 8:47 pm
BCN
-
ONT
21h 47m
2 stops
$938Multiple Airlines
Mon, Jun 1 - Thu, Jun 4
Multiple Airlines Logo
10:54 am - 4:00 pm
ONT
-
BCN
20h 06m
2 stops
Multiple Airlines Logo
8:00 am - 5:10 pm
BCN
-
ONT
18h 10m
2 stops
$960Multiple Airlines
Mon, Aug 17 - Sat, Sep 5
Multiple Airlines Logo
10:47 am - 4:05 pm
ONT
-
BCN
20h 18m
2 stops
Multiple Airlines Logo
8:00 am - 8:24 pm
BCN
-
ONT
21h 24m
2 stops
$1,011Multiple Airlines
Thu, Aug 20 - Thu, Sep 3
Multiple Airlines Logo
10:45 am - 4:05 pm
ONT
-
BCN
20h 20m
2 stops
Multiple Airlines Logo
8:00 am - 5:10 pm
BCN
-
ONT
18h 10m
2 stops
$1,020Multiple Airlines
Sat, Aug 22 - Sat, Sep 5
Multiple Airlines Logo
11:15 am - 4:00 pm
ONT
-
BCN
19h 45m
2 stops
Multiple Airlines Logo
8:00 am - 11:51 pm
BCN
-
ONT
24h 51m
2 stops
$1,023Multiple Airlines
Mon, Jun 1 - Sat, Jun 13
Multiple Airlines Logo
11:15 am - 10:10 pm
ONT
-
BCN
25h 55m
2 stops
Multiple Airlines Logo
10:25 am - 11:40 pm
BCN
-
ONT
22h 15m
2 stops
$1,024Multiple Airlines
Thu, Jun 4 - Sun, Jun 7
Multiple Airlines Logo
11:15 am - 4:00 pm
ONT
-
BCN
19h 45m
2 stops
Multiple Airlines Logo
8:00 am - 8:47 pm
BCN
-
ONT
21h 47m
2 stops
$1,027Multiple Airlines
Mon, Jun 1 - Tue, Jun 9

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
Aug 2
ONT1:50 pmOntario
15h 30m
1 stop
BCN2:20 pmBarcelona-El Prat
Aug 19
BCN1:15 pmBarcelona-El Prat
39h 42m
2 stops
ONT7:57 pmOntario
$1,078
United Airlines
Aug 3
ONT6:39 pmOntario
29h 21m
2 stops
BCN9:00 amBarcelona-El Prat
Aug 21
BCN1:15 pmBarcelona-El Prat
39h 42m
2 stops
ONT7:57 pmOntario
$1,083
United Airlines
Aug 8
ONT6:10 amOntario
42h 10m
2 stops
BCN9:20 amBarcelona-El Prat
Aug 19
BCN1:15 pmBarcelona-El Prat
39h 42m
2 stops
ONT7:57 pmOntario
$1,086

Air Canada flights from Ontario to Barcelona-El Prat Airport

Our best Air Canada deals on Ontario to Barcelona-El Prat Airport flight tickets
Air Canada
Aug 4
ONT5:00 amOntario
18h 00m
2 stops
BCN8:00 amBarcelona-El Prat
Aug 20
BCN1:15 pmBarcelona-El Prat
40h 38m
2 stops
ONT8:53 pmOntario
$1,082
Air Canada
Aug 7
ONT1:18 pmOntario
59h 02m
2 stops
BCN9:20 amBarcelona-El Prat
Aug 20
BCN1:15 pmBarcelona-El Prat
40h 38m
2 stops
ONT8:53 pmOntario
$1,094
Air Canada
Aug 2
ONT5:00 amOntario
18h 00m
2 stops
BCN8:00 amBarcelona-El Prat
Aug 19
BCN12:15 pmBarcelona-El Prat
41h 38m
2 stops
ONT8:53 pmOntario
$1,099

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 May 22, 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
Quickest round-trip

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Tue 6/30

12:02 pm-11:10 am

1 stop14h 08m

Barcelona-El Prat

Wed 7/8

11:00 am-6:23 pm

1 stop16h 23m

$706

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Thu 8/20

7:10 am-10:10 pm

2 stops30h 00m

Barcelona-El Prat

Thu 9/3

8:00 am-10:35 pm

2 stops23h 35m

$909

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 6/1

11:15 am-4:00 pm

2 stops19h 45m

Barcelona-El Prat

Thu 6/11

8:00 am-11:51 pm

2 stops24h 51m

$916

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 6/1

7:00 am-4:00 pm

2 stops24h 00m

Barcelona-El Prat

Thu 6/4

8:00 am-8:47 pm

2 stops21h 47m

$938

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 8/17

10:54 am-4:00 pm

2 stops20h 06m

Barcelona-El Prat

Sat 9/5

8:00 am-5:10 pm

2 stops18h 10m

$960

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Thu 8/20

10:47 am-4:05 pm

2 stops20h 18m

Barcelona-El Prat

Thu 9/3

8:00 am-8:24 pm

2 stops21h 24m

$1,011

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sat 8/22

10:45 am-4:05 pm

2 stops20h 20m

Barcelona-El Prat

Sat 9/5

8:00 am-5:10 pm

2 stops18h 10m

$1,020

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 6/1

11:15 am-4:00 pm

2 stops19h 45m

Barcelona-El Prat

Sat 6/13

8:00 am-11:51 pm

2 stops24h 51m

$1,023

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Thu 6/4

11:15 am-10:10 pm

2 stops25h 55m

Barcelona-El Prat

Sun 6/7

10:25 am-11:40 pm

2 stops22h 15m

$1,024

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 6/1

11:15 am-4:00 pm

2 stops19h 45m

Barcelona-El Prat

Tue 6/9

8:00 am-8:47 pm

2 stops21h 47m

$1,027

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 $0, 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 September instead. Flights to Barcelona-El Prat Airport in September, while not as cheap as those in January, still average around $703.

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 $693. 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 $862. 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 $507 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 $822 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 28% 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
3,220 reviews
Search Iberia flights
United AirlinesPriceFrom $682Free CancellationRating
7.4
9,752 reviews
Search United Airlines flights
British AirwaysPriceFrom $747Free CancellationRating
6.7
7,995 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
Cadaques
Badalona
Pineda de Mar
Santa Susanna
Calella de Palafrugell
Pals
Empuriabrava
Roses
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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