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449 € Cheap Flights from Madrid to Ontario International

Compare Madrid to Ontario International flight deals

Find the cheapest month or even day of the year to fly to Ontario International

Book the best Ontario International fare with no extra fees

Flight deals from Madrid to Ontario International

Looking for a cheap last-minute deal or the best return flight from Madrid Airport to Ontario International Airport? If you want to travel next month, return fares start from 492 €. Find the lowest prices on one-way and return tickets right here.
Ontario.449 € per passenger.Departing Thu, 4 Mar, returning Mon, 8 Mar.Return flight with Delta.Outbound indirect flight with Delta, departs from Madrid on Thu, 4 Mar, arriving in Ontario International.Inbound indirect flight with Delta, departs from Ontario International on Mon, 8 Mar, arriving in Madrid.Price includes taxes and charges.From 449 €, select.
Ontario.456 € per passenger.Departing Tue, 23 Feb, returning Mon, 1 Mar.Return flight with Iberia.Outbound indirect flight with Iberia, departs from Madrid on Tue, 23 Feb, arriving in Ontario International.Inbound indirect flight with Iberia, departs from Ontario International on Mon, 1 Mar, arriving in Madrid.Price includes taxes and charges.From 456 €, select.
Ontario.457 € per passenger.Departing Wed, 17 Feb, returning Wed, 24 Feb.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Madrid on Wed, 17 Feb, arriving in Ontario International.Inbound indirect flight with British Airways, departs from Ontario International on Wed, 24 Feb, arriving in Madrid.Price includes taxes and charges.From 457 €, select.
Ontario.457 € per passenger.Departing Thu, 21 Jan, returning Thu, 25 Feb.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Madrid on Thu, 21 Jan, arriving in Ontario International.Inbound indirect flight with British Airways, departs from Ontario International on Thu, 25 Feb, arriving in Madrid.Price includes taxes and charges.From 457 €, select.
Ontario.472 € per passenger.Departing Mon, 18 Jan, returning Sun, 24 Jan.Return flight with Iberia.Outbound indirect flight with Iberia, departs from Madrid on Mon, 18 Jan, arriving in Ontario International.Inbound indirect flight with Iberia, departs from Ontario International on Sun, 24 Jan, arriving in Madrid.Price includes taxes and charges.From 472 €, select.
Ontario.475 € per passenger.Departing Wed, 16 Dec, returning Thu, 21 Jan.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Madrid on Wed, 16 Dec, arriving in Ontario International.Inbound indirect flight with British Airways, departs from Ontario International on Thu, 21 Jan, arriving in Madrid.Price includes taxes and charges.From 475 €, select.
Ontario.475 € per passenger.Departing Tue, 15 Dec, returning Thu, 11 Feb.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Madrid on Tue, 15 Dec, arriving in Ontario International.Inbound indirect flight with British Airways, departs from Ontario International on Thu, 11 Feb, arriving in Madrid.Price includes taxes and charges.From 475 €, select.
Ontario.489 € per passenger.Departing Tue, 24 Nov, returning Tue, 8 Dec.Return flight with Iberia.Outbound indirect flight with Iberia, departs from Madrid on Tue, 24 Nov, arriving in Ontario International.Inbound indirect flight with Iberia, departs from Ontario International on Tue, 8 Dec, arriving in Madrid.Price includes taxes and charges.From 489 €, select.
Ontario.489 € per passenger.Departing Mon, 2 Nov, returning Wed, 11 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Madrid on Mon, 2 Nov, arriving in Ontario International.Inbound indirect flight with Delta, departs from Ontario International on Wed, 11 Nov, arriving in Madrid.Price includes taxes and charges.From 489 €, select.
Ontario.489 € per passenger.Departing Wed, 2 Dec, returning Tue, 8 Dec.Return flight with Iberia.Outbound indirect flight with Iberia, departs from Madrid on Wed, 2 Dec, arriving in Ontario International.Inbound indirect flight with Iberia, departs from Ontario International on Tue, 8 Dec, arriving in Madrid.Price includes taxes and charges.From 489 €, select.
Ontario.489 € per passenger.Departing Tue, 20 Oct, returning Sun, 17 Jan.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Madrid on Tue, 20 Oct, arriving in Ontario International.Inbound indirect flight with British Airways, departs from Ontario International on Sun, 17 Jan, arriving in Madrid.Price includes taxes and charges.From 489 €, select.
Ontario.489 € per passenger.Departing Thu, 3 Sep, returning Thu, 10 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Madrid on Thu, 3 Sep, arriving in Ontario International.Inbound indirect flight with Delta, departs from Ontario International on Thu, 10 Sep, arriving in Madrid.Price includes taxes and charges.From 489 €, select.
Ontario.490 € per passenger.Departing Tue, 6 Oct, returning Mon, 19 Oct.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Madrid on Tue, 6 Oct, arriving in Ontario International.Inbound indirect flight with British Airways, departs from Ontario International on Mon, 19 Oct, arriving in Madrid.Price includes taxes and charges.From 490 €, select.
Ontario.490 € per passenger.Departing Wed, 23 Sep, returning Wed, 21 Oct.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Madrid on Wed, 23 Sep, arriving in Ontario International.Inbound indirect flight with British Airways, departs from Ontario International on Wed, 21 Oct, arriving in Madrid.Price includes taxes and charges.From 490 €, select.
Ontario.490 € per passenger.Departing Fri, 30 Oct, returning Mon, 2 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Madrid on Fri, 30 Oct, arriving in Ontario International.Inbound indirect flight with Delta, departs from Ontario International on Mon, 2 Nov, arriving in Madrid.Price includes taxes and charges.From 490 €, select.
Ontario.492 € per passenger.Departing Thu, 27 Aug, returning Mon, 31 Aug.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Madrid on Thu, 27 Aug, arriving in Ontario International.Inbound indirect flight with British Airways, departs from Ontario International on Mon, 31 Aug, arriving in Madrid.Price includes taxes and charges.From 492 €, select.

Find the cheapest month to fly from Madrid to Ontario International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Madrid to Ontario International flights are currently cheapest in March.
Jul
from 1.256 €
Aug
from 492 €
Sep
from 489 €
Oct
from 490 €
Nov
from 489 €
Dec
from 489 €
Jan
from 472 €
Feb
from 457 €
Mar
from 449 €
Apr
from 499 €
May
from 507 €
Jun
from 772 €

Madrid to Ontario International: Alternative routes

Compare routes from Madrid to Ontario below. You may find an airport to fly into that's cheaper, faster, or easier than Ontario International.

Ontario International

4km from central Ontario
Closest
from 449 €
Search flights

San Bernardino Norton AFB

39km from central Ontario
Search flights

Santa Ana John Wayne

48km from central Ontario
from 454 €
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Long Beach Municipal

54km from central Ontario
from 682 €
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Hawthorne

65km from central Ontario
from 4.410 €
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Burbank

67km from central Ontario
from 485 €
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Los Angeles International

71km from central Ontario
Cheapest
from 443 €
Search flights

Madrid to Ontario: Flight information

The things to know before you go.
Cheapest flight found449 €
Cheapest month to flyMarch

Finding cheap flights from Madrid to Ontario International: Frequently asked questions

The best price we found for a return flight from Madrid to Ontario International is 449 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Madrid to Ontario International. But we found flights with one or more stops from 449 €.
As of July 2026, there are no flights flying from Madrid to Ontario International.
The cheapest month to fly from Madrid to Ontario International is usually March.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Madrid Airport to Ontario International Airport on Thursday, 4 March 2027.
No airlines currently offer direct flights between Madrid Airport and Ontario International Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Ontario International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Ontario is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Delta offers the cheapest flight tickets to Ontario International.

Flying from Madrid Airport (MAD) to Ontario International Airport (ONT): what you need to know

  • Ontario's timezone is UTC-8, which makes Ontario nine hours behind Madrid.

  • For a stress-free journey, turn up at the airport two hours ahead of international flights and an hour before domestic departures. This ensures you have enough time to catch your MAD to ONT flight.

  • During popular months like July, you'll want to get to the airport even earlier. Plan to arrive two hours before a domestic departure and four hours ahead of international flights whenever you're travelling during a high season in general.

  • We make it a piece of cake to book a flight with a stopover. To see your options for tickets from Madrid Airport to Ontario International Airport, uncheck 'Direct flights only.' Then, choose a flight that has a stop long enough to explore the city of your choice. Top stopovers between MAD and ONT include:

    • Atlanta Hartsfield-Jackson Airport

    • Dallas Fort Worth International Airport

    • San Francisco International Airport

How to find the cheapest flights from Madrid Airport (MAD) to Ontario International Airport (ONT)

  • Right now, 382 € is the cheapest price we've found for a one-way Madrid Airport to Ontario International Airport flight. The best price for a return ticket is 449 €. Remember that fares may change due to demand at the time of booking.

  • Don't wait until the last moment. You're more likely to find cheap tickets from MAD to ONT if you book ahead. Airlines often have some excellent early bird rates.

  • The 'Whole month' tool shows you the cheapest flights from Madrid Airport to Ontario International Airport across the month. It's a good way to snap up a bargain if your plans are flexible.

  • Spend less time searching for cheap flights from MAD to ONT by creating a Price Alert. You'll receive an email or push notification on the app when a lower fare pops up.

  • Tailor your flights using filters. Pick your ideal arrival and departure times, total journey duration and airlines. You can also sort results by 'Fastest,' 'Best' or 'Cheapest' flights from Madrid Airport to Ontario International Airport.

Handy information about Madrid Airport (MAD)

  • 77% of flights leaving from Madrid Airport arrive at their destination on time.

  • Madrid Airport is about 13 kilometres from central Madrid. If you're driving, ride-sharing or catching a taxi from the centre, it'll take 20 minutes or so to arrive, depending on the traffic.

  • You can expect a trip time of around 30 minutes on public transport.

  • Booked an early flight from Madrid Airport to Ontario International Airport? Avoid the hassle of rushing to the airport (and enjoy a little extra shut-eye) by picking one of these hotels near MAD:

Arriving at Ontario International Airport (ONT)

Getting from Ontario International Airport (ONT) to central Ontario

  • ONT is located at 2900 E. Airport Drive.

  • Ontario International Airport is roughly 10 kilometres from the centre of Ontario. The drive time takes around 15 minutes.

  • It takes around 45 minutes to get there by public transport.

When to fly to Ontario International Airport (ONT)

  • It's time to plan your dates for your flight from Madrid Airport to Ontario International Airport. July is the most popular month to head to Ontario. If you want a quieter vibe, go in March.

  • Lock in your flight from Madrid Airport to Ontario International Airport for August if you want to explore Ontario during its warmest month. Expect temperatures of between 16ºC (61ºF) and 36ºC (97ºF).

  • February has average temperatures of between 4ºC (39ºF) and 24ºC (75ºF). Look for cheap tickets from MAD to ONT around that time if you like cooler conditions.

Explore more of the United States

  • Ontario has its own special appeal, but there are so many other parts of the United States waiting to be explored. Around 56 kilometres west of Ontario, a trip to Los Angeles will keep your itinerary packed. Start with leading sights like Hollywood Sign, Universal Studios Hollywood and Hollywood Bowl.

  • San Diego is another essential stop in the United States and is around 153 kilometres south of Ontario. No journey is complete without visiting San Diego Zoo, San Diego Balboa Park and USS Midway Museum.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.