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Cheap flights from Ontario to Barcelona from $350

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 2/2. 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.
United Airlines Logo
1:50 pm - 3:40 pm
ONT
-
BCN
16h 50m
1 stop
United Airlines Logo
12:35 pm - 10:18 pm
BCN
-
ONT
41h 43m
2 stops
$654United Airlines
Wed, Mar 4 - Tue, Mar 10
British Airways Logo
4:45 pm - 6:25 pm
ONT
-
BCN
16h 40m
2 stops
British Airways Logo
10:40 am - 6:42 pm
BCN
-
ONT
17h 02m
1 stop
$661British Airways
Tue, Feb 3 - Thu, Feb 19
British Airways Logo
4:45 pm - 7:45 pm
ONT
-
BCN
18h 00m
2 stops
British Airways Logo
10:40 am - 10:49 pm
BCN
-
ONT
21h 09m
1 stop
$663British Airways
Mon, Feb 2 - Wed, Feb 18
British Airways Logo
2:39 pm - 6:25 pm
ONT
-
BCN
18h 46m
2 stops
British Airways Logo
10:40 am - 6:42 pm
BCN
-
ONT
17h 02m
1 stop
$665British Airways
Wed, Feb 18 - Wed, Feb 25
United Airlines Logo
1:24 pm - 9:00 am
ONT
-
BCN
34h 36m
2 stops
United Airlines Logo
11:00 am - 8:50 pm
BCN
-
ONT
42h 50m
2 stops
$666United Airlines
Mon, Feb 2 - Wed, Feb 18
United Airlines Logo
6:09 am - 9:00 am
ONT
-
BCN
17h 51m
2 stops
United Airlines Logo
11:00 am - 10:57 pm
BCN
-
ONT
20h 57m
2 stops
$667United Airlines
Wed, Feb 18 - Wed, Feb 25
British Airways Logo
4:45 pm - 6:25 pm
ONT
-
BCN
16h 40m
2 stops
British Airways Logo
10:40 am - 10:06 am
BCN
-
ONT
32h 26m
1 stop
$668British Airways
Tue, Feb 3 - Wed, Feb 11
British Airways Logo
6:00 am - 8:50 am
ONT
-
BCN
17h 50m
1 stop
British Airways Logo
10:40 am - 10:49 pm
BCN
-
ONT
21h 09m
1 stop
$671British Airways
Wed, Feb 18 - Wed, Feb 25
Air Canada Logo
5:00 am - 9:35 am
ONT
-
BCN
19h 35m
3 stops
Air Canada Logo
1:35 pm - 12:43 pm
BCN
-
ONT
32h 08m
3 stops
$673Air Canada
Wed, Feb 18 - Tue, Feb 24
United Airlines Logo
7:00 am - 1:15 pm
ONT
-
BCN
21h 15m
1 stop
United Airlines Logo
3:15 pm - 10:26 pm
BCN
-
ONT
16h 11m
1 stop
$674United Airlines
Wed, Apr 15 - Tue, Apr 21

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
Mar 4
ONT1:50 pmOntario
16h 50m
1 stop
BCN3:40 pmBarcelona-El Prat
Mar 10
BCN12:35 pmBarcelona-El Prat
41h 43m
2 stops
ONT10:18 pmOntario
$654
United Airlines
Feb 2
ONT1:24 pmOntario
34h 36m
2 stops
BCN9:00 amBarcelona-El Prat
Feb 18
BCN11:00 amBarcelona-El Prat
42h 50m
2 stops
ONT8:50 pmOntario
$666
United Airlines
Feb 18
ONT6:09 amOntario
17h 51m
2 stops
BCN9:00 amBarcelona-El Prat
Feb 25
BCN11:00 amBarcelona-El Prat
20h 57m
2 stops
ONT10:57 pmOntario
$667

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
Feb 18
ONT5:00 amOntario
19h 35m
3 stops
BCN9:35 amBarcelona-El Prat
Feb 24
BCN1:35 pmBarcelona-El Prat
32h 08m
3 stops
ONT12:43 pmOntario
$673
Air Canada
Jan 28
ONT5:05 amOntario
19h 30m
3 stops
BCN9:35 amBarcelona-El Prat
Feb 28
BCN1:35 pmBarcelona-El Prat
32h 08m
3 stops
ONT12:43 pmOntario
$1,356
Air Canada
Jan 28
ONT5:05 amOntario
19h 30m
3 stops
BCN9:35 amBarcelona-El Prat
Feb 2
BCN1:35 pmBarcelona-El Prat
32h 12m
3 stops
ONT12:47 pmOntario
$1,386

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 January 21, 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

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Wed 3/4

1:50 pm-3:40 pm

1 stop16h 50m

Barcelona-El Prat

Tue 3/10

12:35 pm-10:18 pm

2 stops41h 43m

$654

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Tue 2/3

4:45 pm-6:25 pm

2 stops16h 40m

Barcelona-El Prat

Thu 2/19

10:40 am-6:42 pm

1 stop17h 02m

$661

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 2/2

4:45 pm-7:45 pm

2 stops18h 00m

Barcelona-El Prat

Wed 2/18

10:40 am-10:49 pm

1 stop21h 09m

$663

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Wed 2/18

2:39 pm-6:25 pm

2 stops18h 46m

Barcelona-El Prat

Wed 2/25

10:40 am-6:42 pm

1 stop17h 02m

$665

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 2/2

1:24 pm-9:00 am

2 stops34h 36m

Barcelona-El Prat

Wed 2/18

11:00 am-8:50 pm

2 stops42h 50m

$666

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Wed 2/18

6:09 am-9:00 am

2 stops17h 51m

Barcelona-El Prat

Wed 2/25

11:00 am-10:57 pm

2 stops20h 57m

$667

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Tue 2/3

4:45 pm-6:25 pm

2 stops16h 40m

Barcelona-El Prat

Wed 2/11

10:40 am-10:06 am

1 stop32h 26m

$668

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Wed 2/18

6:00 am-8:50 am

1 stop17h 50m

Barcelona-El Prat

Wed 2/25

10:40 am-10:49 pm

1 stop21h 09m

$671

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Wed 2/18

5:00 am-9:35 am

3 stops19h 35m

Barcelona-El Prat

Tue 2/24

1:35 pm-12:43 pm

3 stops32h 08m

$673

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Wed 4/15

7:00 am-1:15 pm

1 stop21h 15m

Barcelona-El Prat

Tue 4/21

3:15 pm-10:26 pm

1 stop16h 11m

$674

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 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 $737.

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 $657. 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 $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 $801 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 $1,069 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 36% 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

14h 45m

Direct flights

None
The fastest flight from Ontario to Barcelona-El Prat Airport takes 14h 45m
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

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

    Barcelona-El Prat is 5972.8 mi away from Ontario. 14h 45m 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
7,689 reviews
Search British Airways flights
IberiaPriceFrom $605Free CancellationRating
7.0
3,094 reviews
Search Iberia flights
United AirlinesPriceFrom $688Free CancellationRating
7.4
9,191 reviews
Search United Airlines flights
American AirlinesPriceFrom $1,005Free CancellationRating
7.2
11,174 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
El Prat de Llobregat
Tarragona
Castelldefels
L'Hospitalet de Llobregat
Santa Susanna
Calella
Cadaques
Cambrils
Empuriabrava
Pals
Roses
Badalona
Pineda de Mar
Palafrugell
Tortosa
La Pineda

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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