What is the cheapest airline that flies from Ontario to Barcelona-El Prat?

KLM, Delta, and United Airlines are the most popular carriers operating from Ontario to Barcelona-El Prat

Which layover airport offers the lowest fares from Ontario to Barcelona-El Prat Airport?

Flights via Atlanta (ATL) offer the lowest average round-trip price of $842.

What airlines fly to Barcelona-El Prat Airport?

Iberia, LEVEL and Condor are the top three most popular airlines that fly to Barcelona-El Prat Airport from Ontario according to our data. Iberia is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Barcelona-El Prat Airport. Keep in mind that there are 22 different airlines that fly to Barcelona-El Prat Airport on a routine basis, so you have a few additional options to choose from.

Which airport is the most popular layover for flights between Ontario and Barcelona-El Prat Airport?

Dallas (DFW) was the most common stop: 67% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from Ontario to Barcelona-El Prat Airport?

Flights connecting via Dallas (DFW) have the shortest average one-way travel time: 14h 15m.

Which layover airport has the shortest connection time from Ontario to Barcelona-El Prat Airport?

Dallas (DFW) has the shortest average layover time for this route: 2h 29m.

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?

As of August 2026, there are 3 operators available to choose from 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.

$325 Cheap Flights from Ontario to Barcelona-El Prat Airport in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Barcelona

Round-trip

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Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 8:40 am-

16h 40m

10:50 am - 6:31 pm-

16h 41m

$840Air France

Thu, Dec 3 - Thu, Dec 17

6:50 am - 1:40 pm-

21h 50m

12:25 pm - 9:40 pm-

18h 15m

$844Multiple Airlines

Wed, Nov 11 - Tue, Nov 17

10:58 am - 5:55 pm-

21h 57m

3:30 pm - 8:55 pm-

38h 25m

$846Multiple Airlines

Mon, Jan 18 - Fri, Jan 22

7:00 am - 7:35 am-

15h 35m

10:40 am - 6:47 pm-

17h 07m

$847British Airways

Mon, Nov 2 - Thu, Nov 12

10:25 am - 10:10 am-

14h 45m

10:45 am - 6:44 pm-

16h 59m

$847British Airways

Sun, Oct 11 - Wed, Oct 21

10:25 am - 8:50 am-

14h 25m

9:55 am - 6:44 pm-

16h 49m

$847British Airways

Mon, Oct 26 - Thu, Oct 29

6:45 am - 9:35 am-

17h 50m

1:35 pm - 6:44 pm-

38h 09m

$856United Airlines

Sun, Jan 17 - Thu, Jan 21

7:00 am - 1:15 pm-

21h 15m

1:15 pm - 10:49 pm-

42h 34m

$857United Airlines

Mon, Sep 21 - Wed, Sep 30

10:25 am - 10:10 am-

14h 45m

10:45 am - 6:44 pm-

16h 59m

$873Iberia

Wed, Oct 14 - Wed, Oct 21

6:00 am - 7:35 am-

16h 35m

10:40 am - 6:47 pm-

17h 07m

$873Iberia

Tue, Nov 10 - Wed, Nov 18

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Delta flights from Ontario to Barcelona-El Prat Airport

Our best Delta deals on Ontario to Barcelona-El Prat Airport flight tickets

Delta

Aug 9

ONT7:05 amOntario

20h 45m

1 stop

BCN12:50 pmBarcelona-El Prat

Aug 12

BCN1:20 pmBarcelona-El Prat

18h 25m

1 stop

ONT10:45 pmOntario

$801

Delta

Sep 22

ONT11:54 amOntario

14h 16m

1 stop

BCN11:10 amBarcelona-El Prat

Oct 1

BCN11:00 amBarcelona-El Prat

20h 24m

1 stop

ONT10:24 pmOntario

$873

Delta

Sep 19

ONT12:17 pmOntario

35h 18m

2 stops

BCN8:35 amBarcelona-El Prat

Oct 1

BCN11:00 amBarcelona-El Prat

20h 24m

1 stop

ONT10:24 pmOntario

$877

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

Sep 20

ONT5:00 amOntario

18h 00m

2 stops

BCN8:00 amBarcelona-El Prat

Sep 30

BCN12:15 pmBarcelona-El Prat

41h 43m

2 stops

ONT8:58 pmOntario

$856

Air Canada

Sep 19

ONT5:00 amOntario

43h 20m

2 stops

BCN9:20 amBarcelona-El Prat

Oct 1

BCN12:15 pmBarcelona-El Prat

41h 43m

2 stops

ONT8:58 pmOntario

$861

Air Canada

Sep 22

ONT5:00 amOntario

18h 00m

2 stops

BCN8:00 amBarcelona-El Prat

Oct 2

BCN12:15 pmBarcelona-El Prat

33h 31m

2 stops

ONT12:46 pmOntario

$886

momondo Fare Finder

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 12/3

7:00 am-8:40 am

1 stop16h 40m

Barcelona-El Prat

Thu 12/17

10:50 am-6:31 pm

1 stop16h 41m

$840

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Wed 11/11

6:50 am-1:40 pm

2 stops21h 50m

Barcelona-El Prat

Tue 11/17

12:25 pm-9:40 pm

2 stops18h 15m

$844

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 1/18

10:58 am-5:55 pm

2 stops21h 57m

Barcelona-El Prat

Fri 1/22

3:30 pm-8:55 pm

2 stops38h 25m

$846

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 11/2

7:00 am-7:35 am

1 stop15h 35m

Barcelona-El Prat

Thu 11/12

10:40 am-6:47 pm

1 stop17h 07m

$847

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sun 10/11

10:25 am-10:10 am

1 stop14h 45m

Barcelona-El Prat

Wed 10/21

10:45 am-6:44 pm

1 stop16h 59m

$847

Quickest round-trip

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 10/26

10:25 am-8:50 am

1 stop14h 25m

Barcelona-El Prat

Thu 10/29

9:55 am-6:44 pm

1 stop16h 49m

$847

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sun 1/17

6:45 am-9:35 am

2 stops17h 50m

Barcelona-El Prat

Thu 1/21

1:35 pm-6:44 pm

2 stops38h 09m

$856

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 9/21

7:00 am-1:15 pm

1 stop21h 15m

Barcelona-El Prat

Wed 9/30

1:15 pm-10:49 pm

2 stops42h 34m

$857

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Wed 10/14

10:25 am-10:10 am

1 stop14h 45m

Barcelona-El Prat

Wed 10/21

10:45 am-6:44 pm

1 stop16h 59m

$873

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Tue 11/10

6:00 am-7:35 am

1 stop16h 35m

Barcelona-El Prat

Wed 11/18

10:40 am-6:47 pm

1 stop17h 07m

$873

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Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Layovers

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 November instead. Flights to Barcelona-El Prat Airport in November, while not as cheap as those in January, still average around $824.

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 $820. 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 $954. 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 $482 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 $925 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 42% 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.

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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?
As of August 2026, there are 3 operators available to choose from 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?
Based on momondo bookings for flights between Ontario and Barcelona-El Prat Airport, the leading airline is United Airlines, making up 50% of the total bookings. Other popular airlines include British Airways with 26% and Iberia with 24%.

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
Iberia	PriceFrom $723	Free Cancellation	Rating 7.0 3,267 reviews	Search Iberia flights
British Airways	PriceFrom $820	Free Cancellation	Rating 6.7 8,148 reviews	Search British Airways flights
United Airlines	PriceFrom $874	Free Cancellation	Rating 7.4 10,060 reviews	Search United Airlines flights

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Tossa de Mar

Calella

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Badalona

Santa Susanna

Empuriabrava

Calella de Palafrugell

Pals

Palafrugell

Malgrat de Mar

La Pineda

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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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Cheap flights from Ontario to Barcelona from $329

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 8/11. 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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Delta flights from Ontario to Barcelona-El Prat Airport

Our best Delta deals on Ontario to Barcelona-El Prat Airport flight tickets

Air Canada flights from Ontario to Barcelona-El Prat Airport

Our best Air Canada deals on Ontario to Barcelona-El Prat Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Ontario to Barcelona-El Prat Airport that are best for you.

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How to get the cheapest flight ticket from Ontario to Barcelona-El Prat Airport

What is the cheapest month to fly to Barcelona-El Prat Airport?

What is the cheapest day to depart on your flight to Barcelona-El Prat Airport?

What is the cheapest time of day to depart on your flight to Barcelona-El Prat Airport?

Can stopping save me money on Ontario to Barcelona-El Prat Airport flights?

What is the cheapest airline that flies from Ontario to Barcelona-El Prat?

What airlines fly to Barcelona-El Prat Airport?

Which airport is the most popular layover for flights between Ontario and Barcelona-El Prat Airport?

Which layover airport offers the lowest fares from Ontario to Barcelona-El Prat Airport?

Which layover airport has the shortest travel time from Ontario to Barcelona-El Prat Airport?

Which layover airport has the shortest connection time from Ontario to Barcelona-El Prat Airport?

When to book flights from Ontario to Barcelona-El Prat Airport

Cheap Ontario to Barcelona-El Prat Airport (ONT to BCN) flight deals and tips

Fastest flight time

Direct flights

Frequently asked questions about flying 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

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Why use momondo?

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.

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