Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Ontario to Barcelona from $465

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 4/19. 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.

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

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 - 2:20 pm
ONT
-
BCN
15h 30m
1 stop
United Airlines Logo
3:15 pm - 10:51 pm
BCN
-
ONT
16h 36m
1 stop
$766United Airlines
Mon, Jul 6 - Fri, Jul 17
United Airlines Logo
5:45 am - 9:00 am
ONT
-
BCN
18h 15m
2 stops
United Airlines Logo
3:15 pm - 12:47 pm
BCN
-
ONT
30h 32m
2 stops
$771United Airlines
Mon, Jul 6 - Fri, Jul 17
United Airlines Logo
1:50 pm - 8:20 am
ONT
-
BCN
33h 30m
3 stops
United Airlines Logo
3:15 pm - 8:42 pm
BCN
-
ONT
38h 27m
2 stops
$776United Airlines
Mon, Jul 6 - Thu, Jul 16
United Airlines Logo
6:30 am - 9:20 am
ONT
-
BCN
17h 50m
2 stops
United Airlines Logo
3:15 pm - 12:12 pm
BCN
-
ONT
29h 57m
2 stops
$779United Airlines
Sun, Jul 12 - Wed, Jul 22
Multiple Airlines Logo
12:55 pm - 10:10 pm
ONT
-
BCN
24h 15m
2 stops
Multiple Airlines Logo
8:00 am - 10:15 pm
BCN
-
ONT
23h 15m
2 stops
$943Multiple Airlines
Sun, May 10 - Tue, May 26
Multiple Airlines Logo
9:10 pm - 5:40 pm
ONT
-
BCN
35h 30m
2 stops
Multiple Airlines Logo
7:40 am - 11:09 am
BCN
-
ONT
36h 29m
2 stops
$959Multiple Airlines
Mon, Oct 5 - Sun, Oct 18
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
$960British Airways
Tue, Sep 29 - Wed, Oct 14
Multiple Airlines Logo
9:40 am - 10:10 pm
ONT
-
BCN
27h 30m
2 stops
Multiple Airlines Logo
8:00 am - 8:55 pm
BCN
-
ONT
21h 55m
2 stops
$967Multiple Airlines
Tue, Sep 22 - Tue, Sep 29
Multiple Airlines Logo
9:10 pm - 10:45 am
ONT
-
BCN
28h 35m
2 stops
Multiple Airlines Logo
7:40 am - 11:09 am
BCN
-
ONT
36h 29m
2 stops
$991Multiple Airlines
Mon, Oct 5 - Sat, Oct 17
Multiple Airlines Logo
6:00 am - 11:15 pm
ONT
-
BCN
32h 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

KLM flights from Ontario to Barcelona-El Prat Airport

Our best KLM deals on Ontario to Barcelona-El Prat Airport flight tickets
KLM
May 12
ONT11:52 amOntario
14h 18m
1 stop
BCN11:10 amBarcelona-El Prat
May 19
BCN11:00 amBarcelona-El Prat
16h 36m
1 stop
ONT6:36 pmOntario
$1,070
KLM
Apr 23
ONT12:49 pmOntario
15h 01m
1 stop
BCN12:50 pmBarcelona-El Prat
Apr 26
BCN11:00 amBarcelona-El Prat
16h 33m
1 stop
ONT6:33 pmOntario
$1,260
KLM
Apr 23
ONT12:49 pmOntario
15h 01m
1 stop
BCN12:50 pmBarcelona-El Prat
May 5
BCN11:00 amBarcelona-El Prat
16h 33m
1 stop
ONT6:33 pmOntario
$1,290

Iberia flights from Ontario to Barcelona-El Prat Airport

Our best Iberia deals on Ontario to Barcelona-El Prat Airport flight tickets
Iberia
Oct 5
ONT10:25 amOntario
14h 45m
1 stop
BCN10:10 amBarcelona-El Prat
Oct 18
BCN9:20 pmBarcelona-El Prat
30h 37m
2 stops
ONT6:57 pmOntario
$1,030
Iberia
Apr 28
ONT7:30 amOntario
15h 05m
1 stop
BCN7:35 amBarcelona-El Prat
May 4
BCN12:30 pmBarcelona-El Prat
20h 16m
2 stops
ONT11:46 pmOntario
$1,071
Iberia
Apr 26
ONT7:30 amOntario
15h 05m
1 stop
BCN7:35 amBarcelona-El Prat
May 4
BCN10:45 amBarcelona-El Prat
22h 01m
1 stop
ONT11:46 pmOntario
$1,288

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 12, 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

Mon 7/6

1:50 pm-2:20 pm

1 stop15h 30m

Barcelona-El Prat

Fri 7/17

3:15 pm-10:51 pm

1 stop16h 36m

$766

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 7/6

5:45 am-9:00 am

2 stops18h 15m

Barcelona-El Prat

Fri 7/17

3:15 pm-12:47 pm

2 stops30h 32m

$771

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 7/6

1:50 pm-8:20 am

3 stops33h 30m

Barcelona-El Prat

Thu 7/16

3:15 pm-8:42 pm

2 stops38h 27m

$776

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sun 7/12

6:30 am-9:20 am

2 stops17h 50m

Barcelona-El Prat

Wed 7/22

3:15 pm-12:12 pm

2 stops29h 57m

$779

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sun 5/10

12:55 pm-10:10 pm

2 stops24h 15m

Barcelona-El Prat

Tue 5/26

8:00 am-10:15 pm

2 stops23h 15m

$943

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 10/5

9:10 pm-5:40 pm

2 stops35h 30m

Barcelona-El Prat

Sun 10/18

7:40 am-11:09 am

2 stops36h 29m

$959
Quickest round-trip

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Tue 9/29

10:25 am-10:10 am

1 stop14h 45m

Barcelona-El Prat

Wed 10/14

1:30 pm-9:08 pm

1 stop16h 38m

$960

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Tue 9/22

9:40 am-10:10 pm

2 stops27h 30m

Barcelona-El Prat

Tue 9/29

8:00 am-8:55 pm

2 stops21h 55m

$967

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 10/5

9:10 pm-10:45 am

2 stops28h 35m

Barcelona-El Prat

Sat 10/17

7:40 am-11:09 am

2 stops36h 29m

$991

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Wed 10/7

6:00 am-11:15 pm

2 stops32h 15m

Barcelona-El Prat

Sun 10/18

7:40 am-11:09 am

2 stops36h 29m

$994

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 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 evening is the least expensive time of day to depart. momondo users have found prices as low as $795 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 $816 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 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

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

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. 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
IberiaPriceFrom $605Free CancellationRating
7.0
3,178 reviews
Search Iberia flights
United AirlinesPriceFrom $682Free CancellationRating
7.4
9,576 reviews
Search United Airlines flights
British AirwaysPriceFrom $747Free CancellationRating
6.7
7,876 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.

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
Tue 5/12
Tue 5/19
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 $672