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Flight Deals
Cheap Flights from Ontario to Europe
Cheapest round-trip prices found by our users on KAYAK in the last 5 daysBook Cheap Ontario to Europe Plane Tickets
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Europe 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 Europe
Tue, Dec 1 - Wed, Dec 9
7:06 pm - 2:00 pmONT Ontario-FCO Rome Fiumicino
33h 54m3 stops San Francisco Denver Intl Reykjavik Keflavik Intl
11:25 am - 10:17 pmFCO Rome Fiumicino-ONT Ontario
19h 52m2 stops Reykjavik Keflavik Intl Denver Intl
$701Multiple Airlines
Tue, Nov 24 - Sat, Dec 5
12:18 pm - 1:30 pmONT Ontario-KRK Krakow J. Paul II Balice
16h 12m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol
6:00 am - 4:28 pmKRK Krakow J. Paul II Balice-ONT Ontario
19h 28m2 stops Amsterdam Schiphol Salt Lake City
$717Delta
Wed, Mar 31 - Wed, Apr 21
1:44 pm - 12:20 amONT Ontario-OTP Bucharest Otopeni Intl
24h 36m2 stops Phoenix Sky Harbor Intl London Heathrow
8:15 am - 11:46 pmOTP Bucharest Otopeni Intl-ONT Ontario
25h 31m2 stops London Heathrow Dallas/Fort Worth
$718British Airways
Wed, Dec 9 - Wed, Dec 16
11:20 am - 4:55 pmONT Ontario-KRK Krakow J. Paul II Balice
20h 35m2 stops San Francisco Munich Franz Josef Strauss
10:10 am - 8:38 pmKRK Krakow J. Paul II Balice-ONT Ontario
19h 28m2 stops Frankfurt am Main San Francisco
$719United Airlines
Wed, Feb 17 - Wed, Feb 24
6:00 am - 12:50 pmONT Ontario-KRK Krakow J. Paul II Balice
21h 50m2 stops San Francisco Munich Franz Josef Strauss
10:10 am - 10:30 pmKRK Krakow J. Paul II Balice-ONT Ontario
21h 20m2 stops Frankfurt am Main San Francisco
$724United Airlines
Tue, Jan 19 - Tue, Feb 2
4:19 pm - 12:05 amONT Ontario-OTP Bucharest Otopeni Intl
21h 46m2 stops Phoenix Sky Harbor Intl London Heathrow
8:20 am - 11:13 pmOTP Bucharest Otopeni Intl-ONT Ontario
24h 53m2 stops London Heathrow Dallas/Fort Worth
$725British Airways
Sun, Nov 29 - Tue, Dec 15
7:05 am - 8:15 amONT Ontario-FCO Rome Fiumicino
16h 10m1 stop Atlanta Hartsfield-Jackson
10:25 am - 8:58 pmFCO Rome Fiumicino-ONT Ontario
19h 33m1 stop Atlanta Hartsfield-Jackson
$728Delta
Wed, Nov 25 - Thu, Dec 10
5:00 am - 8:55 amONT Ontario-FCO Rome Fiumicino
18h 55m2 stops Denver Intl Montreal Pierre Elliott Trudeau Intl
11:15 am - 9:11 pmFCO Rome Fiumicino-ONT Ontario
42h 56m2 stops Toronto Pearson Intl Denver Intl
$729Air Canada
Sun, Jan 17 - Mon, Jan 25
6:00 am - 9:25 amONT Ontario-MAD Madrid Barajas
18h 25m1 stop Dallas/Fort Worth
7:30 pm - 11:13 pmMAD Madrid Barajas-ONT Ontario
36h 43m2 stops London Heathrow Dallas/Fort Worth
$765Iberia
Sun, Jan 17 - Mon, Jan 25
7:00 am - 12:15 pmONT Ontario-MAD Madrid Barajas
20h 15m2 stops Dallas/Fort Worth London Heathrow
12:55 am - 1:28 pmMAD Madrid Barajas-ONT Ontario
21h 33m1 stop Dallas/Fort Worth
$778Iberia
Recent one-way flight deals from Ontario to Europe
Sun, Mar 21
6:00 am - 11:50 amONT Ontario-LHR London Heathrow
22h 50m2 stops San Francisco Vancouver Intl
$322Air Canada
Wed, Mar 3
6:00 am - 10:40 amONT Ontario-LHR London Heathrow
20h 40m2 stops Salt Lake City Seattle/Tacoma Intl
$323Virgin Atlantic
Sun, Feb 14
4:25 pm - 1:35 pmONT Ontario-LHR London Heathrow
13h 10m1 stop Phoenix Sky Harbor Intl
$324British Airways
Tue, Feb 23
2:42 pm - 12:00 pmONT Ontario-LHR London Heathrow
13h 18m1 stop Dallas/Fort Worth
$324British Airways
Tue, Mar 2
6:00 am - 7:05 amONT Ontario-LHR London Heathrow
17h 05m2 stops Salt Lake City Minneapolis St Paul
$325Virgin Atlantic
Sun, Mar 28
1:00 pm - 12:35 pmONT Ontario-LHR London Heathrow
15h 35m1 stop Denver Intl
$326United Airlines
Mon, Mar 29
4:00 pm - 3:05 pmONT Ontario-LHR London Heathrow
15h 05m1 stop Seattle/Tacoma Intl
$326Alaska Airlines
Mon, Mar 8
5:00 am - 7:40 amONT Ontario-LHR London Heathrow
18h 40m2 stops Denver Intl Houston George Bush Intcntl
$334United Airlines
Tue, Apr 13
4:00 pm - 3:05 pmONT Ontario-LHR London Heathrow
15h 05m1 stop Seattle/Tacoma Intl
$334Alaska Airlines
Sun, Apr 25
1:00 pm - 12:20 pmONT Ontario-FCO Rome Fiumicino
14h 20m1 stop Denver Intl
$337Lufthansa
Recent last minute flight deals from Ontario to Europe
Wed, Nov 18 - Wed, Nov 25
7:05 am - 8:15 amONT Ontario-FCO Rome Fiumicino
16h 10m1 stop Atlanta Hartsfield-Jackson
6:10 am - 8:54 pmFCO Rome Fiumicino-ONT Ontario
23h 44m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson
$740Delta
Wed, Nov 18 - Wed, Nov 25
7:00 am - 7:45 amONT Ontario-FCO Rome Fiumicino
15h 45m1 stop Chicago O'Hare Intl
7:05 am - 5:56 pmFCO Rome Fiumicino-ONT Ontario
19h 51m2 stops Munich Franz Josef Strauss San Francisco
$740United Airlines
Tue, Nov 17 - Tue, Nov 24
7:00 am - 10:45 amONT Ontario-FCO Rome Fiumicino
18h 45m1 stop Dallas/Fort Worth
1:10 pm - 11:59 pmFCO Rome Fiumicino-ONT Ontario
19h 49m1 stop Dallas/Fort Worth
$741Iberia
Tue, Nov 17 - Wed, Dec 16
7:05 am - 8:15 amONT Ontario-FCO Rome Fiumicino
16h 10m1 stop Atlanta Hartsfield-Jackson
10:25 am - 8:58 pmFCO Rome Fiumicino-ONT Ontario
19h 33m1 stop Atlanta Hartsfield-Jackson
$741Air France
Mon, Nov 16 - Thu, Nov 26
7:05 am - 8:15 amONT Ontario-FCO Rome Fiumicino
16h 10m1 stop Atlanta Hartsfield-Jackson
10:25 am - 7:49 pmFCO Rome Fiumicino-ONT Ontario
18h 24m1 stop Atlanta Hartsfield-Jackson
$741Air France
Wed, Nov 18 - Wed, Nov 25
1:29 pm - 11:55 amONT Ontario-FCO Rome Fiumicino
13h 26m1 stop Denver Intl
9:45 am - 6:47 pmFCO Rome Fiumicino-ONT Ontario
18h 02m1 stop Chicago O'Hare Intl
$741United Airlines
Tue, Nov 17 - Fri, Dec 18
7:05 am - 11:20 amONT Ontario-FCO Rome Fiumicino
19h 15m1 stop Atlanta Hartsfield-Jackson
10:25 am - 7:44 pmFCO Rome Fiumicino-ONT Ontario
18h 19m1 stop Atlanta Hartsfield-Jackson
$741Delta
Wed, Nov 18 - Wed, Feb 24
7:00 am - 8:05 amONT Ontario-MAD Madrid Barajas
16h 05m1 stop Dallas/Fort Worth
12:55 am - 9:42 amMAD Madrid Barajas-ONT Ontario
17h 47m1 stop Dallas/Fort Worth
$937British Airways
Sun, Nov 15 - Tue, Nov 24
7:00 am - 8:05 amONT Ontario-MAD Madrid Barajas
16h 05m1 stop Dallas/Fort Worth
1:00 pm - 10:36 pmMAD Madrid Barajas-ONT Ontario
18h 36m1 stop Dallas/Fort Worth
$937British Airways
Wed, Nov 18 - Wed, Nov 25
7:00 am - 8:05 amONT Ontario-MAD Madrid Barajas
16h 05m1 stop Dallas/Fort Worth
1:00 pm - 10:54 pmMAD Madrid Barajas-ONT Ontario
18h 54m1 stop Dallas/Fort Worth
$945Iberia
Booking Insights
KAYAK's insights & trends for Ontario to Europe flights
Get data-powered insights and trends into flights from Ontario to Europe to help you find the cheapest flights, the best time to fly and much more.
Prices
Airlines
More
Which airlines fly non-stop between Ontario and Europe?
Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Ontario to Europe.
There are 2 airlines that fly nonstop from Ontario to Europe. They are Delta and British Airways. The cheapest airline for this route is British Airways, with the best round-trip deal found costing $474 and arriving in Madrid (MAD). On average, British Airways offers the best prices for nonstop flights between Ontario and Europe.
Which airlines provide the cheapest flights from Ontario to Europe?
The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.
In the past 5 days, the cheapest round-trip tickets from Ontario to Europe were found on Delta ($717) and United Airlines ($719).
Good to know
Low season | January |
|---|---|
High season | July |
Cheapest flight | $324 |
FAQs - booking Europe flights
Reviews of the top 5 airlines serving from Ontario to Europe
7.9
Alaska AirlinesOverall score based on 13160 reviews
7.0Entertainment
7.0Food
7.8Comfort
8.5Crew
8.1Boarding
Airline reviews
The back of the plane use to board first after handicap with children and first class. Now the back boards last and there’s a long line waiting to go back while everyone is putting their luggage up and standing in aisle just talking. It’s hard on the elderly. I’m elderly.
10.0 ExcellentAnonymous, Oct 2026
The back of the plane use to board first after handicap with children and first class. Now the back boards last and there’s a long line waiting to go back while everyone is putting their luggage up and standing in aisle just talking. It’s hard on the elderly. I’m elderly.
Seat didn’t recline at all- very uncomfortable after three hours
The seat on row 11 was a little hard cause my butt was hurting a little bit from sitting after and hour.
The first flight was fine, great crew, but the plane was delayed 45 minutes to go to Seattle because of they were missing a ramp. That would make sense if the plane was actually at the gate. Not if we’re still waiting for a plane. After we landed we waited 30-45 minutes on the tarmac just to get off the plane. Alaska made me miss my connecting flight, wasting my time, and my money. I should honestly be reimbursed, but hey, when does the airline ever actually take accountability? Never.
Wish there were more complimentary drinks available - only had water and apple juice. Also - no snacks were provided during the flight, but we were offered some items as we exited the plane.
My daughter has anxiety and became nauseous after boarding the plane and before take off. She went to the plane bathroom and ended up having to vomit, and your staff promptly removed us from the flight. We explained that it was due to my daughter’s anxiety, and that the condition would not continue in the air, but they removed us anyway. We have flown many many times before on many different airlines and my daughter’s anxiety has resulted in nausea and sickness before takeoff, and every airline has been accommodating and professional. This is was our first time flying with your airline, and also the first time we have ever been removed from a flight. This was the worst service we have ever experienced. This was a special surprise trip we gifted to my daughter for graduating college. I had also paid to upgrade the family to first class and sit all together which we had never done before and can’t afford on a normal basis. Our removal from the flight was not only extremely embarrassing, but devastating for my daughter. My daughter and I were removed from the plane and a call was made by your staff to medical personnel, a few questions were asked of my daughter, and then she was magically cleared. All of this took mere minutes. Why this could not have been performed while we were on the plane, or why this could not have been performed off the plane and then us allowed to reboard is beyond me. My wife and youngest daughter continued on the original flight alone and were very upset and crying due to the situation, yet the staff did nothing to console or assist them. My wife states that upon arrival in Portland and as they were exiting the plane, one of the stewardesses involved said “byyyyeeeee” to them sarcastically and laughed. Myself and my oldest daughter had to wait 4 hours for an alternate flight and were sat in regular seats because our first class seat purchase could not be honored. My wife wasn’t allowed to pick up our rental car and had to wait 4 hours with our luggage until I arrived. The delay prevented us from being able to carry out planned events and ruined the first day of our trip. Upon explaining all of this to your customer service, we received no sympathy, assistance, or compensation other than your staff submitting a request for a reimbursement of my and my daughters first class upgrade cost. When checking in early for our flight back home, the luggage cost for myself and my eldest daughter was no longer discounted as it was for my wife and youngest daughter. Customer service once again could not assist me over the phone and rectify what should have been a minor adjustment. Instead they stated I would have to wait until we physically checked bags in at the airport and then ask staff to adjust the luggage cost. With everything else we had experienced, I was not going to leave that to chance and instead paid full price for the luggage ahead of time. Or experience with Alaska Airlines was a complete disaster and I am baffled at the lack of empathy and assistance from your staff. I’m not sure of what else to say other than the fact that unless we are compensated by Alaska Airlines in some form to offset the horrendous service we received, we will be relaying our experience to family and friends and on social media, and doing all we can to urge everyone to avoid utilizing your services.
I got an email 3 hours before the flight letting me know it got canceled
Boarding was easy and quick. Staff was very friendly. Service of snacks and drinks by staff was outstanding.
It was ok! Not fond of sitting in middle seat. Tried to upgrade with my Atmos card but it was a new account and they weren’t able to look up my account details.
Not bad. Due to not buying a seat, on the way back, my seat was not assigned till 2 hrs before the flight left. Got me worried I wouldn’t have a seat.
Great overall experience and use of the Delta One lounge was amazing!
I used by Skymiles to upgrade to First so that I could comfortably work using my laptop. But WiFi was intermittent and unavailable for long periods. I feel like I wasted 70,000 miles :(
Chairs don’t recline and the ones that do recline, barely do recline. It was most uncomfortable flight i ever been on.
Everything was pretty good. I would like to have more drinks (water) during four hours of the flight.
Rude staff from baggage check to gate crew. Poor instructions. Inconsistent application of baggage rules.
It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!
737-800 in first class was pretty dumpy. Seat had an uncomfortable angle, storage under the seat was blocked so even my very modest backpack didn't fit, power outlet was flaky. Weird tiny seat pockets that couldn't hold a gallon ziploc bag, emesis bag missing, etc. etc. No in-flight service due to turbulence. Crew was excellent, boarding was smooth despite a full flight.
The flight was overbooked and the staff at the gate started calling for volunteers to drop out and offering incentives. That delayed the flight
There was no wifi even after my husband paid for wifi it wasn’t working. The plane looked and felt old.
Update the cabin with tv screens or at least music sources.
The flight itself was ok but delayed take off meant that service was also delayed once in the air and it was a long time before the lights in the cabin were turned off. The food was pretty poor, which was disappointing for Virgin. Particularly breakfast which was a dry bagel with a pot of cream cheese. Economy sears were not comfortable despite us handing 3 seats between the two of us, I was unable to get comfortable and sleep. The entertainment was brilliant with a great selection and a very welcome addition was free high speed internet access for flying club members meaning I could stream video whilst in the air.
Food was okay. Seats were a bit cramped. In flight entertainment headphone socket didn't work on my seat. Wifi was great, so I was able to stream on my iPad
Selection of movies didn't include recent box office hits. Food was average not great. English sparkling wine is not drinkable. Otherwise, everything was great.
Check in at the desk was very slow pus Security, although not Virgin issue at JFK was a nightmare. 50 minuet wait no time to explore airport and get last minuet gifts. total wait 1.5hours
Seating and zone. The minor I went with didn’t even seat close to me
Great staff great experience, made a 2 hour delay very bearable
We had an unfortunate experience where we had to leave the aircraft after boarding, shortly before the scheduled takeoff time, and re-board. The reason given was that a passenger felt ill and had to cancel their plans and therefor their luggage had to be found and removed.
My only complaint is that the pocket in front of me was ripped and my things, like iPad and airline magazines, kept slipping to the floor.
Flight delayed yet again. Crew apathetic and unhelpful re affect on connecting flight.
Cabin crew on our flight showed lack of any customer service gruff and acting annoyed if you asked anything and I mean anything Example a man on the seat over dropped his beer on my husbands blanket We asked if we could switch out blankets cabin crew Said. No we don’t have any extras OK well can you take the wet one Cabin crew looked disgusted and annoyed Took it no OK or yes just a growl
Check in went smoothly. Flight attendant who was assigned my area barely paid any attention to me! She acted as though she was extremely busy and flustered. Maybe she was new?! I told her to change the language on my screen, she said she’d come back to help me but never did so I was able to solve the problem on my own. She came back and said she’d made adjustments on her end. Highly doubt it because I found the setting to change the language! Also, I noticed everyone was eating before we landed so I pushed my help button and she never came so I got up to find her to ask her if I can have breakfast. She said they are not serving breakfast but I can have a sandwich. Yes, that was her response as I saw everyone eating breakfast!!!
Flight delay in lax which delayed our connecting flight to Copenhagen. Was placed on standby the following day and got delayed again at Scandinavian air. Bad bad counter service at ar Canada in Toronto by the name of Camilla who said that she was doing us a courtesy for even finding a earlier flight for us after we the customer are the ones being inconvenient by the cancellation of our flight. Btw, we are going on a tour. Air Canada is the worse
New Max 10, first class seats have been shrunk. End of a 20 hour journey, it was United not Lufthansa, just glad to get home
Seats are uncomfortable and left me in pain in my tailbone area. I got about one hour of sleep.
Delay of two hours due to some mechanical issue. Staff was wonderful and the pilot did let us know what was going on.
One of my checked luggage was damaged. Cracked on the top by the handle.
Not so good. Crew was not as attentive as they should have been especially if flying business class. Only offered dinner 2 hours after takeoff. My flight attendant seemed overwhelmed. Pushed my help button but no one came. I explained everything on my previous review.
I have been flying united for a long time but now I’m done
Delayed - leaving, delayed getting to the gate at destination. What should have been a very easy flight and experience was not.
Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.
This is just for first leg, second leg from London Heathrow to Delhi was the worst.
I really enjoyed the flight…and food and the hospitality but didn’t get the food I requested for.
I washed attendant for assistance and she never got back to me. I asked her a second time and she said she would check. She never did. The flight was over an hour late taking off No food service was offered despite over 4 hours on the flight
Waited until boarding started before saying there was no overhead luggage space on the plane.
A/C temp. was way too cold during the flight.
Boarding from the SFO lounge is a big improvement. Although the first class dining room inside the lounge is becoming very crowded.
Spent unnecessary hours on phone calls to resolve small error on one of the passengers name... It was extremely stressful and time consuming... Not great... Also all 4 members of the family: 2 parents/ 2 teenagers were allocated separate seats (even separate floors... Not great...
I was booked in Premium Economy and never given a chance to choose to purchase my own seat. Ended up with a middle seat, which was very difficult for me. The airline then left my bag in London so when I arrived in Instanbul it was not there. They delivered it to me the next day but many valuable items had been stolen. I've been flying with BA for years and this was the first time I had such a bizarre and bad experience with them.
Flight delayed due to changing a tire....so complete itinerary had to be changed....resulting in delayed arrival. Despite assertions it would be there checked bag didn't arrive til 24 hours later.
Inflight service could have been better. Overall experience was okay
More options for your flight to Europe
Complete your trip to Europe with a hotel stay or car rental
Information on your arrival and departure airports
Cabin class types available on flights to Ontario
Cabin classes available on flights to Europe. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
Flights from domestic origins to Ontario
Flights from all regions of Ontario to Europe. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
Flights to other popular destinations
The most popular flights on KAYAK according to clicks in the last 2 weeks. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
Flights to popular destinations in Europe
Flights to Austriafrom $816
Flights to Bosnia and Herzegovinafrom $768
Flights to Croatiafrom $766
Flights to Czech Republicfrom $848
Flights to Denmarkfrom $753
Flights to Estoniafrom $745
Flights to Finlandfrom $932
Flights to Francefrom $811
Flights to Germanyfrom $779
Flights to Greecefrom $842
Flights to Icelandfrom $739
Flights to Irelandfrom $717
Flights to Italyfrom $688
Flights to Luxembourgfrom $974
Flights to Maltafrom $1,070
Flights to Netherlandsfrom $920
Flights to Norwayfrom $751
Flights to Polandfrom $699
Flights to Portugalfrom $735
Flights to Romaniafrom $718
Flights to Serbiafrom $778
Flights to Sloveniafrom $848
Flights to Spainfrom $747
Flights to Swedenfrom $724
Flights to Switzerlandfrom $778
Flights to Türkiye (Turkey)from $771
Flights to Ukrainefrom $1,490
Flights to United Kingdomfrom $786