ONT - MAD

$391 Find Cheap Flights from Ontario to Madrid

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Madrid departing on 1/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Madrid

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Madrid, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Madrid, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$507
Overall average: $595
United Airlines
Wed 2/25Wed 3/11
ONT - MAD • 2 stops
Cheapest one-way
$391
Multiple Airlines
Fri 1/9
ONT - MAD • 3 stops
Top airlines
United Airlines
Cheapest • from $507 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
October
Cheapest • 38% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Madrid!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Madrid (ONT-MAD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Madrid that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Madrid

Wed, Feb 25 - Wed, Mar 11
United Airlines Logo
5:00 am - 9:15 am
ONT
-
MAD
19h 15m2 stops
United Airlines Logo
12:35 pm - 10:25 pm
MAD
-
ONT
41h 50m2 stops
$507United Airlines
Wed, Jan 14 - Wed, Feb 11
British Airways Logo
3:09 pm - 6:30 pm
ONT
-
MAD
18h 21m2 stops
British Airways Logo
12:40 pm - 10:48 pm
MAD
-
ONT
19h 08m1 stop
$509British Airways
Wed, Jan 14 - Fri, Feb 13
British Airways Logo
4:45 pm - 6:30 pm
ONT
-
MAD
16h 45m2 stops
British Airways Logo
12:40 pm - 11:58 pm
MAD
-
ONT
20h 18m1 stop
$510British Airways
Tue, Feb 3 - Tue, Feb 17
British Airways Logo
4:45 pm - 8:00 pm
ONT
-
MAD
18h 15m2 stops
British Airways Logo
2:35 pm - 4:24 pm
MAD
-
ONT
34h 49m2 stops
$514British Airways
Mon, Jan 19 - Thu, Feb 5
British Airways Logo
11:59 pm - 4:55 pm
ONT
-
MAD
31h 56m2 stops
British Airways Logo
1:00 pm - 10:48 pm
MAD
-
ONT
18h 48m1 stop
$515British Airways
Wed, Jan 28 - Fri, Feb 20
Multiple Airlines Logo
5:05 am - 8:00 am
ONT
-
MAD
17h 55m2 stops
Multiple Airlines Logo
6:00 am - 9:59 pm
MAD
-
ONT
24h 59m2 stops
$517Multiple Airlines
Wed, Jan 28 - Fri, Feb 20
British Airways Logo
6:00 am - 9:25 am
ONT
-
MAD
18h 25m1 stop
British Airways Logo
1:00 pm - 9:29 pm
MAD
-
ONT
17h 29m1 stop
$520British Airways
Wed, Jan 28 - Fri, Feb 20
Iberia Logo
10:58 am - 9:25 am
ONT
-
MAD
13h 27m1 stop
Iberia Logo
12:40 pm - 10:31 pm
MAD
-
ONT
18h 51m1 stop
$522Iberia
Wed, Feb 18 - Wed, Mar 4
United Airlines Logo
6:00 am - 8:00 am
ONT
-
MAD
17h 00m2 stops
United Airlines Logo
5:55 am - 8:50 pm
MAD
-
ONT
23h 55m2 stops
$525United Airlines
Sat, Jan 31 - Tue, Feb 10
British Airways Logo
3:09 pm - 9:25 am
ONT
-
MAD
33h 16m1 stop
British Airways Logo
1:00 pm - 10:48 pm
MAD
-
ONT
18h 48m1 stop
$526British Airways
Booking Insights

KAYAK's insights & trends for Ontario to Madrid flights

Get data-powered insights and trends into flights from Ontario to Madrid to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Ontario to Madrid?

The average price of all round-trip flights from Ontario to Madrid clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Ontario to Madrid, look for departures on Wednesdays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from Madrid, Monday is the cheapest day to fly and Thursday is the most expensive.

What is the cheapest month to fly from Ontario to Madrid?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Madrid, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Madrid is October, where tickets cost $497 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $1,308 and $1,284 respectively.

Good to know

Low seasonNovember
Cheapest flight$391
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Ontario to Madrid

When to book flights from Ontario to Madrid

Are your dates flexible? Find out the best times to travel from Ontario to Madrid based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Madrid

  • What is the cheapest flight from Ontario to Madrid?

    In the last 3 days, the lowest price for a flight from Ontario to Madrid was $391 for a one-way ticket and $507 for a round-trip.

  • Do I need a passport to fly between Ontario and Madrid?

    A passport is required to fly from Ontario to Madrid.

  • Which aircraft models fly most regularly from Ontario to Madrid?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Madrid?

    SkyTeam, and oneworld are the airline alliances operating flights between Ontario and Madrid, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Madrid, Delta or American Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Madrid are Delta and American Airlines. With an average price for the route of $873 and an overall rating of 7.9, Delta is the most popular choice. American Airlines is also a great choice for the route, with an average price of $1,184 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Ontario to Madrid?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Madrid.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Madrid?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Madrid from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Madrid?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Madrid with an airline and back to Ontario with another airline. Booking your flights between Ontario and MAD can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Madrid?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Madrid from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Ontario to Madrid

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Madrid. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Madrid? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8013 reviews
8.1Boarding
7.9Entertainment
8.5Crew
7.3Food
7.9Comfort
Airline reviews

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

8.0 ExcellentDeborah, Nov 2025
LAX - RDU
Read more Delta reviews

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

I'm a tall guy and even the seats with more leg room were not as comfortable as I had hoped.

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

Horrible. Both legs of my flight were delayed more than 6 hours. No compensation, no screens on the plane, and the plane was not clean.

The flight was smooth, the pilot kept us informed about delays and we arrived more of less on time

The flight was flawless and we even arrived between 20 and 25 minutes early!

Always seated jammed in rear of aircraft Admirals Club food at DFW terminal D was absolute worst food experience and I pay $600/year to eat this dried out junk

in chicago, you have to go out to drop off your luggage for a connecting flight and come back into a security check. which was horrible with a government shut down. some airports you down off luggage and go to your gate. things were not cleanly marked.

Mostly good. Flight was crowded but Airline personnel were very friendly & accommodating. It would be good to have savory snacks rather than just sweet Biscoff cookies.

It was a red eye flight, so no meals were provided, but it was fine with snacks. The seats felt cramped and almost too narrow.

Very crowded flight but what can you expect these days?? Crew was accommodating.

The seats in economy were appeared to be quite thin and lack sufficient cushioning to be comfortable. Perhaps it was my seating position but the plane seemed notably load.

The entertainment package was vast and the selections were very current. Keep updating it was great.

The staff was very nice and helpful. Some of the best crew I have met.

Bad experience. The seat room are very tight. The food is not good and the breakfast has no hot drink.

Excellent. Thanks to United Star Alliance, since economy was overbooked, I’m grateful to have been upgraded to Business Class.

Good plane, excellent food, crew and entertainment. Seats in business could use an upgrade

Disaster. Downgraded. Zero apology. No effort or coordination between gate and crew. Awful seat blocked by door emergency slide box. Iberia is a mess. App never works. Avoid this airline.

We departed late but made up most of the time in flight. Our ticket was pure economy, so it wasn’t anything fancy; however, I heard that we arrived in Madrid at the exact same time that First Class passengers arrived! Overall, our experience was similar to what we had on other American Airlines transatlantic flights - good value at a reasonable price. We were even able to get our carry-on baggage onto the plane without needing to gate check it.

Flight was OK. Waiting for luggage in Madrid for 55 minutes, unacceptable

Transportation from gate to airplane was poor we stayed in hot bus for 20 minute no vantilation

The crew were friendly and helpful. Iberia lost our luggage on arrival, Friday and we didn't get it until Sunday at 10:00 p.m. local Malaga time. I also paid $382.80 for seat assignments but two out out of the four were not together. Iberia mentioned that it was because the plane was delayed in Madrid before our flight began in LAX. They should compensate us half of my payment.

We liked the flight but while we purchased an aisle seat, our seats had a different configuration on this flight. A fellow passenger suggested that the airplane had been changed. Too bad we were not informed and had no chance to modify our seat preferences. We were stuck in the window and middle seats with no chance to walk around and go to the bathroom without disturbing our sleeping fellow passenger.

Airlines have to stop assuming passengers bring entertainment. Provide it like you used to in business class and above!! N

I don't know about the others but the flight attendant that took care of us had the absolute wrong approach "how do we dare asking for water or anything else for that matter"

No WiFi in either flight. No leg room, the seat in front of me left dents on my knees and the tray was so low my knees propped it up if I tried to use it.

Need to offer Better food from LAX to London Service from London to Delhi very delayed after take off.

Great crew and food and beverage. Seating tight but not the airline's fault. Will definitely fly BA in future!

Three major things that led to my low rating, 1. Internet wasn't available for the whole time, and 2. TV became available way into flight, after numerous system reboots, and 3. Food is not good at all.

Crying baby the ENTIRE flight. Not your fault, but I paid 2700 for a premium economy ticket and it wasn't worth it. should have just stuck with coach. flight attendants very mediocre - minimal effort. Plane didn't seem very clean. Didn't have any cleansing wipes - most airlines give you this when you board. Flat screen scrolling didn't work. Toiletry case a joke - why bother at all?

Was delayed on first leg and missed connection. They would not let me board although I arrived at the gate 5 min before take off. I was delayed 24hrs

Enjoyable flight, helpful crew everything was organized to accommodate passengers.

I was transferred to an American Airlines flight. The boarding was late and unorganized. The seating was extremely tight and uncomfortable. Will not use AA again.

Everything you need to know for your flight from Ontario to Madrid

Information on your arrival and departure airports