Find cheap flights from London Heathrow Airport to Ontario

LHR - ONT

Find cheap flights from London Heathrow Airport to Ontario

Search hundreds of travel sites at once for deals on flights to Ontario. Bundle your flight + hotel and save!

Round-trip
Economy
London (LHR)
Ontario
Tue 10/26
Tue 11/2
Any month
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Good to know

Low season

FebruaryBest time to beat the crowds with an average 24% drop in price.

High season

AugustMost popular time to fly with an average 28% increase in price.

Average price round-trip

$703(avg. price over the last 2 weeks)

Good deal round-trip

$761or less

Good deal one-way

$1,001or less

When to book flights from London Heathrow Airport to Ontario

Estimated round-trip price
Average price per month

Top tips for finding a cheap flight

  • Looking for a cheap flight? 25% of our users found flights on this route for $1,001 or less one-way and $761 or less round-trip.
  • High season is considered to be July, August and September. The cheapest month to fly is February.
  • Morning departure is around 9% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for booking London Heathrow Airport to Ontario flights

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Top airlines flying London Heathrow to Ontario

Scores according to KAYAK customer reviews

8.3
Qatar Airways
Overall score based on 11,160 reviews
8.3
Boarding
8.2
Comfort
8.6
Crew
8.3
Entertainment
8.0
Food
Airline reviews

Cons: "Qatar airways didn’t let me board the plane despite of all the requirements. Never flying again with them"

Pros: "I like how the crow did help me with my dizziness and provided me with an extra oxygen to breath better."
Cons: "I don’t know, but I always find it difficult with food smells, then make me sick and did today in the flight"

Pros: "Qatar Airways are still flying, in the midst of Coronavirus, unlike their competitors. This is fantastic! Onboard, there was a full service and excellent crew, all through the night, unlike their competitors during the early days of Coronavirus, when I last flew. Thank you. Qatar Airways"
Cons: "The movie selection, although vast, was not great. I resorted to downloaded Netflix on my tablet."

Pros: "Crew and food"

Pros: "The crew was amazing and the food was delicious. The sit was comfortable with a lot of legroom."
Cons: "I like it the way it is. Keep doing the good job."

Pros: "Best crew we’ve ever had."
Cons: "Qatar website needs work"

Pros: "Crew was great, seating was cramped."
Cons: "Seating."

Pros: "Excellent service on both flights. Truly a 5 star experience. Well done Qatar Airways."
Cons: "Nothing. Keep up the good work"

Pros: "Empty plane."
Cons: "Service very reactive, particularly with so few passengers."

Pros: "Entertainment and food is always great with Qatar!"
Cons: "After I got in my seat an Islamic lady came and said that I was in her seat. I looked at her ticket and while it was the right seat number, she was on the wrong flight. I got a stewardess to help her. She had gone through 3 boarding pass checks and was still on the wrong flight. They let her fly!"

Pros: "The crew, Venyat looking after my aisle was exemplary. He kept note of when I was asleep when the service passed through. Whenever I go to the galley, he would notice and asked if I needed anything. And this is in Economy!"
Cons: "On the A350, the seat doesn't recline much. It was quite uncomfortable."

Pros: "Very efficient and comfortable flight."
Cons: "The airline appears to have done away with the courtesy pack, and this was the one time I was travelling without ear plugs!"

Pros: "The airlines' film library offers plenty of movies to watch."
Cons: "I had an aisle seat. The crew pushed the service carts in the gangway and hit me a couple of times, and I was very much annoyed because I was waken up while asleep."

Pros: "Everything....The service,the food,the in-flight entertainment(so many films to chose from) the flight attendants were brilliant,the flight was smooth it went by so fast as though time didn't exist.I recommend Qatar Airways to everybody."
Cons: "Can't find any fault...Sorry!"

Pros: "Super check in, great entertainment options"
Cons: "Cabin crew were not very helpful. Food was average at best."

Pros: "Very polite and friendly crew. Very helpful."
Cons: "Did not have the duty free item I wanted in stock"

Pros: "Excellent service from check in to disembarkation. I was surprised at the amount of leg room, as being a 6+ footer it has always previously been an issue, but not with Qatar."
Cons: "Only downside was the lack of the free traveller pack, eye shade and ear plugs, sleep was denied as I could not block out the sound of the very talkative travellers behind me."

Pros: "All good thank you + food and crew and entertainment"
Cons: "All good thanks"

Pros: "The overall experience"

Pros: "The food was great with three options for each meal and there were a lot of options for in flight entertainment"

Cons: "No food on board!! Staff says it got over when i have selected my food selection!!"

Cons: "No proper communication and very poor management. I was on an emergency and no one bothered to listen and all the passengers were sent . The customer care numbers didn't work as they operate between 8-5 !! No one to reach to .. really bad experience. Don't suggest this aircraft for folks who needs to travel urgently !"

Pros: "The THOUGHT it would be a nice flight than usual from Asia to the USA, but it wasn't. Doha Airport was an interesting stop early I'm the morning"
Cons: "No outlets on either flight or in the airport so can't use electrics for almost the entire trip. The seats are extremely narrow to the point out of unprobabability to have your own space even if sitting next to regular build person. Food was only ok and service was below average with trash often not collected and needing to request water etc"

Cons: "Comfort"

Pros: "Films Service"
Cons: "Not enough films"

Cons: "Seat number was the same but different position from one reserved online"

Pros: "The seats were very comfortable and there was more room for our legs than most airline provide. The entire staff as well as the pilot certainly know what the term “service” means!"

Cons: "The flight attendant dropped a suitcase on my head when I was sleeping. I had terrible headache, nauseous, and dizzy with some really uncomfortable neck pain. The staff tried to get me to take medicines that I could not read for nauseous but I would not. They said they were prescribed by a doctor! What doctor. The flight was the longest worst ever! 14 hours - nothing to eat or drink! In addition, the head flight attendant said the baggage compartment over my head was a problem as it opens all the way down and bags fall easily out. The bag was easily 30 pounds and landed directly on my head. I suffered a concussion."

Pros: "Flight was without any hitches, could have done better with boarding after the previous mishap of a 5 hour delayed flight and being forced to stay in Doha for a night which put everyone's schedules off by a day. Still, I would book another flight with Qatar airways for their efforts and overall good service."
Cons: "It would have been nice if Qatar Airlines also provided Priority Boarding for everyone on the flight that got delayed as there was a long line just to get to the boarding area."

Pros: "Everything"
Cons: "nothing"

Pros: "I would definitely travel again with quatar. Amazing trip long hours but they sure take care of the passenger. Love how they took care of my child"

Pros: "best airline food ever"
Cons: "for an international carrier, leg room is horribly cramped. singapore airlines and qantas offer better leg room in their economy class seats."

Cons: "We could not watch anything as my wife and my screen did not work."

Pros: "The flight was on time and boarding was fast"

Cons: "Excellent"

Cons: "food"

Pros: "The price for the flight was very excellent. The entertainment was very good with the movie selections."
Cons: "In Bangkok, I've already checked in on line and all I have to do was drop off my bag and get a boarding pass. There was one to two person doing the checked in and it took about 40 minutes to get done, unacceptable. The lines for non on line check in went faster then the on-line and they have four times more people that was in the on-line checked in. In flight, the seat felt liked you're sitting on a rock after a couple of hours. I'm an aircraft mechanic who used to be a flyer with 7,000 flying hours."

Pros: "Staff courtesy"

Pros: "High quality gluten free meals (best I've had on Qatar Airways)."
Cons: "Seating needs to be more spacious."

Pros: "The food and crew."
Cons: "The intertainment system on the Doha to Nairobi flight had old communal TV screens."

Pros: "Flight was good. Cabin crew very good. Food good."
Cons: "Qatar Airways check in at Heathrow was a dis-organised shambles. Arrival at Qatar Airport passport control was even worse at 12.45 am. Long queues,very slow to move, police checking passports unbelievably slowly. Retina scanners should speed up the process. Why then take 5 minutes to check each passport? Poor advert for Qatar, after nearly an hour of queuing I would think most passengers wished they had gone somewhere else."

Pros: "The timing was spot on and I had no major issues. The staff was great. They showed that they truly value customer service and were patient"
Cons: "The song selections were somewhat old and should be looked at."

Pros: "13+ hour flight is never an "excellent" experienced but QA does its best. Great cabin service. Decent legroom. Food is good but not *quite* up to the standards of some competitors. Doha airport is great. Modern, convenient and clean."

Pros: "The food on the way back to the United States was excellent. The flight attendants were very friendly and helpful."
Cons: "The good on the way to Cape Town was deplorable. Some of the seat back entertainment centers were malfunctioning while trying to watch movies. They would stop and move forward of their own accord."

Cons: "Arrival in Johannesburg was a nightmare due to queues at immigration - I nearly missed my connecting flight."

Pros: "When I missed my connection in Dohar, I was put up in an excellent hotel with all expenses paid and great food."
Cons: "When I arrived late in Doha because my flight from Heathrow was delayed, it was difficult to find help when I was trying to rush to make it in time for my connecting flight to Haneda."

Pros: "all the crew they were awesome it's my favorite airline QR⛤⛥⛦⛤⛥⛦⛤"
Cons: "I like every things"

Cons: "1-one hour delay in departure. Although pilot tries his best to reduce the delay time but still lost our connection flight. it is known that the whole operation is complex but still believe that effective cooperation by flight crew, ground personnel and others could result in a better outcome. the hotel chosen by the office at airport was not satisfactory. Qatar Airways customers deserve better treatment."

Pros: "everything was great. huge seats, large legroom."

"Wtf with the restrooms. Are they trying to activate everyone’s potential to be claustrophobic? It’s unbelievable. I absolutely hate how airlines are smashing so much into a cabin so they can pack us in like sardines. Glad I paid a stupid amount of money for a seat upgrade … but wish a bathroom upgrade came with it."

Pros: "People at the gate were very friendly and helpful."

Cons: "The seats were very hard and uncomfortable for a 5 1/2 hr flight"

Cons: "Delays and nonstop messages about ETAs and gate changes"

Cons: "Tons of delays"

Pros: "Crew was great."
Cons: "Everything was fine. It was a smooth trip to Denver."

Pros: "The crew was great"

Pros: "Crew was fun and courteous"
Cons: "Bumpy"

Pros: "Jetblue is very dependable"
Cons: "Nothing"

Pros: "Flight was comfortable and entertainment was appreciated"
Cons: "Flight attendants weren’t all there... somewhat rude. Flight attendant gave the wrong local time (you even heard her count through the speaker). Same flight attendant abruptly woke up passengers bye saying “Wakey, Wakey” in the early hours of the morning (we were traveling from NY)"

Pros: "I liked the leg room. Overall the plane was comfortable with more space then most. I also really liked that even though there were many issues once I found the right supervisor they did what they could to help fix all the issues."
Cons: "One of the biggest problems I had was with many of the staff members. Most were very rude and not helpful."

Pros: "Safe quick flight for the long journey despite delay in boarding and departure"
Cons: "Major delays not only going but returning with JetBlue. This was my first time flying them and I’m likely to never use them again. Poor customer service as no one was willing to help with WiFi set up on the way going since I’ve never flown them. Luckily I found 1 nice flight attendant and he helped point me in the right direction in set up. Overall not impressed with service and performance of this carrier."

Pros: "Everything is good"

Pros: "we got where we were going."
Cons: "45 minute delay of takeoff."

Cons: "No USB port. I didn’t get food, just tiny snacks."

Pros: "It was good"
Cons: "Almost too good."

Pros: "We were delayed before take-off but the Captain kept us informed, great job!"

Pros: "i loved that they had television, free wifi, snacks and drinks. there was also a lot of leg room."

Pros: "Boarding went well"
Cons: "I asked 4 times to 3 different attendants to please reset the TVs so that the rite could be fixed. I was not the only passenger in the row and we both were going to enjoy the entertainment that we purchased with our flight tickets. Not only that, but tHe flight attendant knowingly allowed someone to try and enter the bathroom right after watching me go in to use it. I was completely shocked that they were so caught up in their personal conversation and could not bother to warn the person that i was using the bathroom"

Cons: "Flight was delayed by 3 hours."

Cons: "I had a late evening flight and my neighbors chatted very loudly the entire flight. The gentleman’s seat was one row ahead but decided since there was an empty seat in our row he would sit with his girlfriend. The couple smelled of alcohol, not sure if they were served with more than one alcoholic beverage but it made the flight very uncomfortable. Even with my earphones on at a higher level I could still hear them."

Cons: "Plane was delayed 90 minutes for takeoff as it came in late."

Pros: "Free snacks. Great legroom and storage for carryons."

Cons: "delayed"

Pros: "Everything about once I got on the plane was great"
Cons: "My flight ended up being delayed 6 hours. Fine that happens, but what was particularly defeating was the fact that the 6+ hour delay was an accumulation of ongoing alerts of further delay. Had I just been told that it was be six hours, fine, I’d plan accordingly and take a nap, but because it was an hour or so increments of delay I was basically frozen by inaction and constantly having to adjust to another delay"

Pros: "Everyone was awesome. The pilot was humorous. Very relaxing."
Cons: "There wasn't anything I didn't like about the flight."

Pros: "Crew was generous and kind"
Cons: "Delayed flight was accompanied by much beurocratic confusion. Has to obtain a new flight"

Pros: "The comfort of the seats are amazing. I was able to sleep through almost all of the flight."

Pros: "Great crew"

Pros: "We were well informed of the delay in our flight ..thank you for the advance noticed"
Cons: "The 45 min delay"

Pros: "Excellent, on time no delays spacious seats"

Pros: "It’s great for time trip"
Cons: "It’s doesn’t Show up of seats on the airplane"

Pros: "Amazing staff and flight service. Wonderful trip between two great cities."

Pros: "Nothing"
Cons: "DCA boarding crew were very cranky. Left a bad taste in my mouth. Never realized just how small these seats are until this flight, stuck in the middle of two men. Battle to use the armrests, someone kept passing wind and lots of turbulence. Paid full price for this miserable flight."

Pros: "What’s pleasant airline to fly. One of the few who still care."

Cons: "I don't appreciate being force-fed a product I'm not interested in. If you're going to Hock goods, do it as part of the initial announcemens not in the middle of the flight."

Cons: "We cancelled the flight. I did not like the refund that we ended up getting. You did not get get much of a refund. We were very disappointed on the amount. We had to cancel because there was a serious family emergency, so we had no other choice but to cancel. I know you probably did what your policy says, but ....."

Pros: "Friendly, helpful crew."

Pros: "Everything"
Cons: "Nothing"

Pros: "Te service"

Cons: "Didn’t have free WiFi on flight"

Cons: "Had to reschedule the flight because it was delayed. With these delays, we would have certainly missed our connecting flight and ended up stranded at JFK."

Pros: "Smooth event the entire way"

Cons: "No snacks a available, limited beverages."

Pros: "The flight attendants were just great"

Cons: "There was a great deal of turbulance at the begining of the flight. The crew's calming and cofident attitude was very reasuring."

Pros: "The crew were friendly and very funny.."
Cons: "I was very upset because I was flying alone for the first time and there was no tv or movies . I was nervous and took comfort in the thought at least I can keep myself entertained."

Pros: "My favorite was the fact that the seats were big enough that I did not once have to come into physical contact with the person next to me."
Cons: "Flight was delayed a few times but at least they gave me a heads up ahead of time ((just flew American the other day, was delayed a few times, and received NO notifications about it), so I really don't even feel like complaining about it."

Cons: "paid extra for what I thought was early boarding only to discover I had paid for pre check which I didn't need."

Pros: "Always a great flight, service and organization when I fly Jet Blue. Overall a great experience except for my very differing experiences with the less time expedited security option. I am not sure if this differs by airport but the differences are very important ones, as it made one experience worth the money and one experience not worth the money."
Cons: "My only complaint was that I purchased a More Space seat as it came with less time expedited security for free for my return flight after having such a quick and easy time with security on my flight to FL..When I flew from Boston to Orlando, I was sent through the TSA quick security line and it was awesome. On my flight back from Orlando, i had a separate line which skipped to the agent checking your ID, which was not much of a time saver, but then had to wait in the regular security line with everyone else. This was a stark difference and very disappointing from my initial experience with the less time option. I never would have paid 40.00 for the more space if I knew that the security bypass was not much of a bypass at all."

Read more about Qatar Airways
COVID-19 information

Safety measures for airlines flying from London Heathrow Airport to Ontario

Airlines flying from London Heathrow Airport to Ontario have enacted additional safety measures and adjusted policies to better accommodate travelers. Policies vary by airline.

Heightened sanitation

Daily cleaning, installation of cabin HEPA filters on flights from London Heathrow Airport to Ontario

Mandatory masks

Masks required on board, masks provided on flights from London Heathrow Airport to Ontario

Social distancing seating

Middle seats unavailable to book on flights from London Heathrow Airport to Ontario

Pre-flight testing

Testing for antibodies, testing for symptoms for flights from London Heathrow Airport to Ontario

Book cheap flights from London Heathrow Airport to Ontario

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