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Find cheap flights from Ontario to Europe from $243

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 Europe departing on 11/6. 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
0 bags
Thu 7/11
Thu 7/18

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Best Europe Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

London
London1 stop$555
Paris
Paris1 stop$714
Madrid
Madrid2 stops$473
Athens
Athens2 stops$515
Lisbon
Lisbon2 stops$737
Dublin
Dublin2 stops$428
Amsterdam
Amsterdam2 stops$944
Zurich
Zurich2 stops$994
Munich
Munich1 stop$914
Copenhagen
Copenhagen2 stops$485
Edinburgh
Edinburgh2 stops$583
Vienna
Vienna2 stops$842

Good to know

Low season

January

High season

June

Cheapest flight

$243
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly with an average 41% increase in price.
Flight from Ontario to Rome

FAQs - booking Europe flights

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

    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 Europe.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Europe 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 Europe?

    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 Europe with an airline and back to Ontario with another airline.

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

    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 Europe from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Europe

  • Morning departure is around 6% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Ontario to Europe

Need help choosing which airline to fly with from Ontario to Europe? 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.
8.0
DeltaOverall score based on 10277 reviews
7.4Food
7.9Comfort
8.6Crew
8.0Entertainment
8.2Boarding
Airline reviews

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

4.0 OkayBrooke, Jun 2024SFO - MSP
Read more about Delta reviews

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

There was a loud squeaky sound the whole time we were flying.

I didn’t not like that I could not select my seat and ended up with the worse seat.

The landing was bad and the hostess came two times and i was sleeping but when she served the person that nexts to me I woke up and she didn’t even asked me if I need any drink or snacks two times!!!!

Plane was late because of a mechanical malfunction and the food listed as available was not. Flight attendants seem over worked and under paid. They just done seem happy. And that can be seen in their faces.

Waited 3 hours on a plane to de-ice due to manpower issues. Waited another hour and a half once we landed because of a gate issue. Missed my connections. Created. A total of 13 hours of delay.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

Honestly, I didn’t expect that I will experience this long time wait during the check in. There was only one person who was taking care of the passengers for the economy class and it took us to wait about one hour to do our check i. As a result we barely get to the airplane as the gate was at the end of the airport. That is totally not professional where one crue is working at the registration desk with economy and 3-4 crues are helping for the business class.

Why does it have to be painful to fly long distances?

Horrible, the flights kept delaying, so it is obvious that we won't be able to make it to the next connection. No easier/real agent on site to help you figure this out. UA agent on other counters refuse to assist you and direct us to use the QR code/call customer service. So inefficient and poor. While technology seems convenient, but it's not the best interest/experience for customers need help while there is active issue need assistance.

Food is very bad and entertint not too many options ... flight attendet service is not good

Everything was pretty good except for food. They need to improve on it compared to other airlines.

Flight was delayed due to the late arrival of the catering truck, which is quite unacceptable. There was a beverage service, but no pretzel, or cookie, or nuts were served in coach.

I had a great flight. Everything went smoothly and the flight arrived early.

Aisle chair was good and liked the foot bar preventing you from putting your foot in the isle, The breakfast on this international flight to Zurich was horrible (Europeans, specially, used to good food) may make this a dealbreaker for booking with United Airlines again. I agreed with my Spanish fellow passenger.

On time take off…US cabins look tired and need of refresh!

Backpack should NOT allowed put in the flight bin , only put it under the seat. I can't find space put my carry on luggage!!! and I pay for it ! that was very bad experience

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The flight was delayed several times without explanation. The seats were terribly uncomfortable and wifi isn’t included. All these make for a less than ideal flight.

Internet service was erratic. Crew service was poor and slow. My luggage on this non-stop flight was lost and not recovered

Flight was 1/2 hour delayed leaving Phoenix. Otherwise it was an average flight. Flight crew on this trip was very nice.

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

Not sure why JAL partnered with American Airlines because their service is no where near similar. Flight attendants were not friendly and didn’t smile. Food was horrible…

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Comfort of seats, ease of boarding. Food selection could be better

Food options were limited which is absolutely embarrassing for a Flight of this size The staff did not come around as much and I am not accustomed to such poor service from American Airlines Drinks I believe were limited to soda and water

Crew were attentive and friendly. Flight was smooth and early! I enjoyed the less crowded plane. Thank you!

We are gluten free, there were not any available complimentary gluten free options.

The flight from Amsterdam to Dallas was great, ok food, good service, great entertainment. But Dallas to SF was very tiring because of two hour delay inside the airplane waiting for AA paper work in 99 degrees in the sun. We had no oxygen and the pilot had to ask everyone to blast the AC because it was getting too hot inside the cabin.

We left our child’s tablet on our seat 12 B on the plane and we can’t get a hold of anyone to try to get help locating the tablet.

My flight was cancelled after a 7 hour delay. I am awaiting a refund.

Ability to select seating would be nice. We were family of three and they had us seated back to back and one of us on the other side of the plane??? That is pretty goofy. Especially when tickets were placed two months in advance.

My son and I are 193 cm tall. We had reserved and paid for seats with extra leg room towards the front of the cabin. The day of the flight, we learned that Iberia had changed aircraft. We were assigned regular seats way back in the cabin. When we landed from our first leg we spoke with agents at the gate and we were told that they couldn’t improve our seats because the flight was full.

I am quite satisfied. The flight was on time and landed early. Staff was friendly.

I could change to business before flight and everything was perfect except for entertainment which was none.

Other than a late takeoff (not British Airways fault) and some delays with baggage, it was a terrific flight. The crew in business class was superb and the seat and accommodations clean and modern. Could not have asked for more.

Needed more info on connecting flight. Late flight made very short connection. Lost luggage that we still do not have!

Seats comfortable on economy plus and attendants very helpful. Food was ok. Bathrooms needed servicing.

Economy class has no legroom so if you have the money worth to upgrade! Food was absolutely horrible! The crew was super nice!!!!!

The flight was provided by Aer Lingus and our seats were in a poor condition (15A & 15C). They looked like they needed repairing/replacing and were uncomfortable for such a long flight. Also the arm rests on Aer Lingus planes do not lift more than around 45 degrees, instead of the usual 90 degrees upright, meaning you cannot maximum the space between you & your travel companion so as to be more comfortable for such a long flight.

Flights were actually with Aer Lingus outward and American Airlines & Aer Lingus on the return journey. Outward flight with Aer Lingus was good but the return flight with them was not so good as our seats were in a poor condition (15A & 15C) and looked like they needed replacing! The American Airlines flight from Miami to JFK New York was good and the seats were very comfortable and spacious (32D & 32E)

Awful. Delay, lost vacation time and travel time now more than 24h

Awful. Flight delayed and we missed our long flight to Rome. It has been a nightmare and we have still not arrived. It was NOT a weather delay, just poor planning by AA

Boarding was as fast and efficient as possible. The flight crew were amazing and extremely friendly. We enjoyed our flight.

Very bed boarding, there was overbooked and make a lot of problems and noises

There was a problem in the luggage because there were not porters

On my way from Chicago to London, I was seated next to a quite heavy passenger. I could barely move. BA should have ensured that overweight customers are placed in comfortable seats and not to penalize also other passengers because BA is not willing to accommodate these passengers and their needs. No respect at all.

The flight as far as timings go was excellent. Unfortunately we ended up sat with someone on a night flight who had been drinking alcohol before boarding and BA staff were happily serving him more alcohol. He was very drunk which made our flight uncomfortable and awkward. My partner had this person lying on him whilst asleep. Alcohol should be served minimally. If there had been an emergency this person would not have been in a fit state to act accordingly.

Book cheap flights from Ontario to Europe

Recent round-trip flight deals

10/28Mon
2 stopsUnited Airlines
16h 15mONT-DUB
11/6Wed
2 stopsUnited Airlines
21h 21mDUB-ONT
$428
10/28Mon
2 stopsUnited Airlines
18h 00mONT-DUB
11/6Wed
2 stopsUnited Airlines
18h 02mDUB-ONT
$462
10/9Wed
1 stopIberia
13h 00mONT-DUB
10/15Tue
1 stopIberia
17h 02mDUB-ONT
$522
11/7Thu
2 stopsIberia
35h 14mONT-DUB
11/14Thu
2 stopsIberia
21h 12mDUB-ONT
$533
10/20Sun
1 stopDelta
14h 21mONT-LHR
11/1Fri
2 stopsDelta
23h 09mLHR-ONT
$555
10/1Tue
1 stopDelta
20h 00mONT-LHR
10/8Tue
2 stopsDelta
18h 53mLHR-ONT
$556
10/1Tue
1 stopBritish Airways
15h 50mONT-LHR
10/8Tue
1 stopBritish Airways
16h 53mLHR-ONT
$563
10/29Tue
2 stopsAmerican Airlines
15h 41mONT-LHR
11/8Fri
1 stopAmerican Airlines
19h 33mLHR-ONT
$567
10/28Mon
2 stopsBritish Airways
23h 14mONT-ATH
11/4Mon
2 stopsBritish Airways
35h 48mATH-ONT
$568
10/23Wed
1 stopAmerican Airlines
15h 24mONT-MAD
11/6Wed
2 stopsAmerican Airlines
18h 28mMAD-ONT
$617

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Recent one-way flight deals

11/6Wed
2 stops
38h 25mONT-FCO
$243
9/17Tue
3 stops
37h 35mONT-MAD
$346
11/12Tue
1 stopBritish Airways
13h 04mONT-LHR
$398
11/12Tue
1 stopAmerican Airlines
12h 50mONT-LHR
$401
10/7Mon
1 stopBritish Airways
12h 50mONT-LHR
$402
11/12Tue
1 stopAmerican Airlines
12h 50mONT-LHR
$403
11/12Tue
2 stopsUnited Airlines
20h 50mONT-LHR
$420
11/12Tue
2 stopsUnited Airlines
20h 50mONT-LHR
$423
11/30Sat
1 stopDelta
27h 25mONT-DUB
$448
11/25Mon
1 stopDelta
27h 25mONT-DUB
$454

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Last minute flights from Ontario to Europe

Last minute flight, train and bus deals

6/12Wed
multi-stopDelta
19h 30mONT-FCO
6/20Thu
multi-stopDelta
22h 15mFCO-ONT
$933
6/12Wed
multi-stopDelta
19h 30mONT-FCO
6/21Fri
multi-stopDelta
19h 35mFCO-ONT
$934
6/13Thu
multi-stopIberia
12h 56mONT-DUB
6/18Tue
multi-stopIberia
17h 29mDUB-ONT
$962
6/12Wed
multi-stopBritish Airways
23h 06mONT-FCO
6/20Thu
multi-stopBritish Airways
16h 49mFCO-ONT
$978
6/16Sun
multi-stopAmerican Airlines
12h 56mONT-DUB
7/4Thu
multi-stopAmerican Airlines
14h 17mDUB-ONT
$1,112
6/15Sat
multi-stopBritish Airways
27h 10mONT-BCN
6/17Mon
multi-stopBritish Airways
19h 04mBCN-ONT
$1,163
6/13Thu
multi-stopUnited Airlines
27h 05mONT-FRA
6/15Sat
multi-stopUnited Airlines
38h 27mFRA-ONT
$1,190
6/13Thu
multi-stopIberia
19h 45mONT-DUB
6/16Sun
multi-stopIberia
19h 19mDUB-ONT
$1,238
6/12Wed
multi-stopUnited Airlines
14h 51mONT-LHR
6/16Sun
multi-stopUnited Airlines
13h 58mLHR-ONT
$1,255
6/16Sun
multi-stopAmerican Airlines
25h 40mONT-ATH
8/18Sun
multi-stopAmerican Airlines
35h 47mATH-ONT
$1,473

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Ontario - Europe Flights