Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Ontario to Barcelona from $325

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 9/26. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Barcelona

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
4:03 pm - 2:20 pm
ONT
-
BCN
37h 17m
1 stop
United Airlines Logo
12:15 pm - 8:58 pm
BCN
-
ONT
41h 43m
2 stops
$687United Airlines
Thu, Oct 8 - Wed, Oct 21
United Airlines Logo
11:10 am - 8:00 am
ONT
-
BCN
35h 50m
2 stops
United Airlines Logo
12:15 pm - 8:58 pm
BCN
-
ONT
41h 43m
2 stops
$690United Airlines
Thu, Oct 8 - Wed, Oct 21
United Airlines Logo
4:03 pm - 2:20 pm
ONT
-
BCN
37h 17m
1 stop
United Airlines Logo
1:15 pm - 12:18 pm
BCN
-
ONT
56h 03m
2 stops
$692United Airlines
Sat, Oct 10 - Fri, Oct 16
Air Canada Logo
1:24 pm - 8:00 am
ONT
-
BCN
33h 36m
2 stops
Air Canada Logo
12:15 pm - 8:58 pm
BCN
-
ONT
41h 43m
2 stops
$696Air Canada
Thu, Oct 8 - Wed, Oct 21
United Airlines Logo
11:10 am - 2:20 pm
ONT
-
BCN
18h 10m
1 stop
United Airlines Logo
3:15 pm - 10:49 pm
BCN
-
ONT
16h 34m
1 stop
$707United Airlines
Thu, Oct 1 - Tue, Oct 6
United Airlines Logo
11:10 am - 8:00 am
ONT
-
BCN
35h 50m
2 stops
United Airlines Logo
4:10 pm - 12:18 pm
BCN
-
ONT
29h 08m
1 stop
$710United Airlines
Thu, Oct 8 - Wed, Oct 21
United Airlines Logo
6:53 pm - 9:00 am
ONT
-
BCN
29h 07m
2 stops
United Airlines Logo
10:30 am - 12:33 pm
BCN
-
ONT
35h 03m
2 stops
$711United Airlines
Sun, Dec 6 - Thu, Dec 10
United Airlines Logo
6:53 pm - 9:00 am
ONT
-
BCN
29h 07m
2 stops
United Airlines Logo
10:30 am - 12:33 pm
BCN
-
ONT
35h 03m
2 stops
$712United Airlines
Sun, Dec 6 - Thu, Dec 10
United Airlines Logo
5:00 am - 9:35 am
ONT
-
BCN
19h 35m
2 stops
United Airlines Logo
1:50 pm - 11:06 pm
BCN
-
ONT
18h 16m
2 stops
$714United Airlines
Thu, Nov 19 - Thu, Dec 3
United Airlines Logo
7:00 am - 1:15 pm
ONT
-
BCN
21h 15m
1 stop
United Airlines Logo
12:15 pm - 8:01 pm
BCN
-
ONT
40h 46m
2 stops
$717United Airlines
Sun, Sep 13 - Fri, Sep 18

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
Oct 8
ONT1:24 pmOntario
33h 36m
2 stops
BCN8:00 amBarcelona-El Prat
Oct 21
BCN12:15 pmBarcelona-El Prat
41h 43m
2 stops
ONT8:58 pmOntario
$696
Air Canada
Oct 13
ONT1:52 pmOntario
33h 08m
2 stops
BCN8:00 amBarcelona-El Prat
Oct 21
BCN12:15 pmBarcelona-El Prat
41h 43m
2 stops
ONT8:58 pmOntario
$856
Air Canada
Sep 10
ONT1:53 pmOntario
57h 07m
2 stops
BCN8:00 amBarcelona-El Prat
Sep 20
BCN12:15 pmBarcelona-El Prat
32h 57m
2 stops
ONT12:12 pmOntario
$888

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 8
ONT4:03 pmOntario
37h 17m
1 stop
BCN2:20 pmBarcelona-El Prat
Oct 21
BCN12:15 pmBarcelona-El Prat
41h 43m
2 stops
ONT8:58 pmOntario
$687
United Airlines
Oct 8
ONT11:10 amOntario
35h 50m
2 stops
BCN8:00 amBarcelona-El Prat
Oct 21
BCN12:15 pmBarcelona-El Prat
41h 43m
2 stops
ONT8:58 pmOntario
$690
United Airlines
Oct 10
ONT4:03 pmOntario
37h 17m
1 stop
BCN2:20 pmBarcelona-El Prat
Oct 16
BCN1:15 pmBarcelona-El Prat
56h 03m
2 stops
ONT12:18 pmOntario
$692

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 June 24, 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

Thu 10/8

4:03 pm-2:20 pm

1 stop37h 17m

Barcelona-El Prat

Wed 10/21

12:15 pm-8:58 pm

2 stops41h 43m

$687

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Thu 10/8

11:10 am-8:00 am

2 stops35h 50m

Barcelona-El Prat

Wed 10/21

12:15 pm-8:58 pm

2 stops41h 43m

$690

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sat 10/10

4:03 pm-2:20 pm

1 stop37h 17m

Barcelona-El Prat

Fri 10/16

1:15 pm-12:18 pm

2 stops56h 03m

$692

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Thu 10/8

1:24 pm-8:00 am

2 stops33h 36m

Barcelona-El Prat

Wed 10/21

12:15 pm-8:58 pm

2 stops41h 43m

$696
Quickest round-trip

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Thu 10/1

11:10 am-2:20 pm

1 stop18h 10m

Barcelona-El Prat

Tue 10/6

3:15 pm-10:49 pm

1 stop16h 34m

$707

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Thu 10/8

11:10 am-8:00 am

2 stops35h 50m

Barcelona-El Prat

Wed 10/21

4:10 pm-12:18 pm

1 stop29h 08m

$710

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sun 12/6

6:53 pm-9:00 am

2 stops29h 07m

Barcelona-El Prat

Thu 12/10

10:30 am-12:33 pm

2 stops35h 03m

$711

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sun 12/6

6:53 pm-9:00 am

2 stops29h 07m

Barcelona-El Prat

Thu 12/10

10:30 am-12:33 pm

2 stops35h 03m

$712

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Thu 11/19

5:00 am-9:35 am

2 stops19h 35m

Barcelona-El Prat

Thu 12/3

1:50 pm-11:06 pm

2 stops18h 16m

$714

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sun 9/13

7:00 am-1:15 pm

1 stop21h 15m

Barcelona-El Prat

Fri 9/18

12:15 pm-8:01 pm

2 stops40h 46m

$717

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 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 $682.

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 $778. 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 $917. 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 $537 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 $870 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 10% 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 03m

Direct flights

None
The fastest flight from Ontario to Barcelona-El Prat Airport takes 13h 03m
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 03m 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
3,246 reviews
Search Iberia flights
United AirlinesPriceFrom $714Free CancellationRating
7.4
9,881 reviews
Search United Airlines flights
British AirwaysPriceFrom $747Free CancellationRating
6.7
8,068 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
Sitges
Salou
Tarragona
Castelldefels
Tossa de Mar
El Prat de Llobregat
L'Hospitalet de Llobregat
Cambrils
Calella
Cadaques
Badalona
Empuriabrava
Roses
Calella de Palafrugell
Pals
Santa Susanna
Palafrugell
Pineda de Mar
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.

An easier way to manage your Barcelona-El Prat Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 7/24
Fri 7/31
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Barcelona

Popular cities in Spain

Popular flights according to clicks in the last 7 days on momondo
Flights to Girona Costa Brava Airportfrom $609