Find deals on international flights from Ontario

Find deals on international flights from Ontario

Round-trip
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Ontario (ONT)
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Fri 2/26
Fri 3/5
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Good to know

Low season

August Best time to beat the crowds with an average 5% drop in price.

High season

December Most popular time to fly with an average 18% increase in price.

Average price round-trip

$267 (avg. price over the last 2 weeks)

Good deal round-trip

$63 or less

Good deal one-way

$44 or less

FAQs for booking Ontario to Worldwide flights

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Top 5 airlines serving Ontario to Worldwide

Scores according to KAYAK customer reviews

8.3
Alaska Airlines
Overall score based on 29,258 reviews
8.5
Boarding
8.3
Comfort
8.8
Crew
7.9
Entertainment
7.9
Food
Airline reviews

Pros: "The person next to me was drunk. The crew was rude."

Cons: "Packed flight but the crew and ground staff opened to back door to board more easily. Thanks!"

Pros: "Crew Polite"
Cons: "More room seats operational didn’t recline"

Pros: "Great experience"
Cons: "Better meal, but great overall."

Pros: "Helped with bags and quick to assist"

Pros: "Crew was very relaxed and friendly."
Cons: "Boarding was actually very good. It’s just the worst part about any flying experience. But they have a great system."

Pros: "Crew was great. Flight was on time."
Cons: "We were not given seat assignments until the flight was about to leave…"

Pros: "Crew was friendly. I loved that I could charge my phone as well as text while in the air (for free)"
Cons: "Delayed by 3 hours with nothing more than a sorry"

Cons: "We will move from our original reserved seats to the last row. Gogo system not operative."

Pros: "Service vas very good. The flight itself was unremarkable. Take-off and landing was smooth and on time."

Pros: "Big seats love the gogo in flight"
Cons: "N/a"

Cons: "Flight was late"

Cons: "The airline knew I was connecting, and they left early. No compensation, last flight of the night."

Pros: "Boarding was a little slow but the overhead bins were a total win! Love the bigger compartment! The seats were comfy and the flight crew were great! Plenty of complimentary drink choices and delicious snacks that could be purchased. Free in flight wifi was awesome and loved being able to charge my tablet at my seat."
Cons: "Needs wider seats, more help with boarding so it could go smoother and faster. More than one passenger struggled to raise the arm rest."

Pros: "Check in was great. Hassle free."
Cons: "Nothing"

Pros: "Very professional and helpful especially Ms Sahar in Ontario airport."

Pros: "Friendly and fun"

Pros: "Arrived on time and in one piece"

Pros: "Ontime"
Cons: "Cramped seats not much room. Kisok to check bags hard to use or did work at all"

Pros: "Nice clean planes"
Cons: "No entertainment monitors"

Pros: "The flight was pleasant. The cabin attendants were cordial and made sure everyone's needs were met. Air temperature was excellent and luckily we didn't have any turbulence."
Cons: "II was hoping to get a $79 fair to Seattle and had to pay three times that plus baggage fee."

Pros: "On time courteous"

Pros: "Fast check-in"

Pros: "The food is really good and excellent vairity"
Cons: "Sometimes the staff is a littls bit impatient"

Pros: "Food I purchased was very good"
Cons: "Food was not priced well. NO WIFI??? WHAT?"

Pros: "The flight left and arrived on time. Overall a great experience with friendly and caring people. Will definitely use them in the near future!"
Cons: "No issues at all"

Cons: "My luggage was ripped open when I picked it up from the baggage claim in Ontario, CA."

Pros: "Good selection of entertainment (movies)."

Cons: "Need more fruit or veggie snack option No movie player option"

Pros: "The trip was smooth and worry free"
Cons: "Everything was great. As a matter of fact, I shared in a couple of recent conversations how much I like Alaska."

Pros: "Sat in Premium. Early board because of wheel chair. Lots of room. Smooth flight. Arrived early in Seattle. Ta very nice. Took all way to car in parking lot. Cleanliness."
Cons: "TA forgot one of my bags at security..but I didn't miss until almost to departure gate. Had to check my medicine bottle of cough syrup. What a pain. Put into separate basket. Open & swab. Weird. I'm 75 not a terrorist but I did have pneumonia recently & needed it do would not cough & choke on plane."

Pros: "Easy, and comfortable."

Pros: "Very friendly staff."

Pros: "Delayed for one day 3 hours waiting time on the phone to reschedule the ticket"

Pros: "The short flight was made especially nice with one flight attendant offering to give a free drink for showing Seattle seahawk pride! Either wearing a jersey or showing a picture with seahawk pride. Very friendly and fun! The views were very beautiful also! Love Alaska airlines and LOVE the seahawks!!"

Pros: "The flight home from Ontario CA was better than the flight there. The seating was pretty cramped . We got pretzels which was great. Service at this airport was extremely kind and cheerful. It made traveling with a disabled mother much less stressful. Thank you!!"
Cons: "Paying to check our bags when others got theirs checked for free by taking them to the gate wasn't fair. Having my disabled mother have to walk from the ticket counter to some wheelchair waiting area rather than bringing the chair to her started it trip off with stress we didn't need. I even asked if they could bring it to her and they said just go over to the station and wait."

Pros: "Prompt, fast, efficient, and courteous."

Pros: "The flight itself excellent. Great service The only problem was when we landed there was a traffic jam and could not get to the gate for 20 minutes."

Pros: "Great crew"
Cons: "Food ok"

Pros: "Great customer service very professional look forward to their services in the future"

Pros: "Easy Access"
Cons: "The All of the business in the Ontario airport were closed at 3pm."

Cons: "Bad: The plane from ONT to SEA was very cold and pretty cramped (compared to economy on JetBlue (PDX to LGB)). I think it was on this plane that the seats tilted back about 2 inches. Sleep was impossible."

Pros: "Having outlets and usb plugs available for each seat"

Pros: "Love how there are individual usb chargers at every seat. Snacks are reasonably priced."

Pros: "The lady who check me in was very sweet and took care of me. I give her 5 stars"

Pros: "Nice flight and airplane."
Cons: "Didn't realize we didn't have seats next to each other."

Pros: "The crew members were sweet."
Cons: "Didn't like how old the plane was, nor how the seats were smashed all together with no room."

Pros: "I'm not a seasoned flyer and everyone was very helpful!"
Cons: "Everything was great!"

Pros: "Enjoyed staff"
Cons: "Didn't like the loud beeps"

Pros: "Timeliness"
Cons: "Seating"

Cons: "Space on airplanes"

Cons: "The cabin temperature was very hot"

Cons: "A/C was not working well, cabin was too warm and stuffy. Long delay on take off. Can not hear and understand pilot through PA system."

Cons: "The Anchorage airport was FREEZING cold and it was August, maybe a little less AC IS IN ORDER"

Cons: "Food"

Cons: "Food is always bad."

Cons: "Cheerless stewards could perk up."

Cons: "No AC for an hour before takeoff - very uncomfortable. Audio for tv did not work."

Cons: "Hour late and no wifi!"

Pros: "New plane with good features. I was very comfortable."

Pros: "the plane was pretty empty"
Cons: "The times available were terrible!"

Cons: "Nothing"

Pros: "New plane, charging stations"

Cons: "It made no sense to board an hour and a half before takeoff."

Cons: "Change the movies more ofti"

Cons: "I feel like all the problems the aircraft had it should've been repaired before trying to use it, upon boarding they told us the left engine had to be started from an external source, as a new flyer that was terrifying to hear"

Pros: "the food was really top notch and service was great and friendly"

Cons: "The boarding process at LAX was awful. I’m sure the horrible shuttle wait and transfer from terminal to terminal is the airport’s fault, but the airline did not do anywhere near enough to inform passengers of what was in store. It was confusing and annoying."

Pros: "Easy and on time and Delta Comfort is always the best. Easy boarding process too!"

Pros: "Quick boarding process"
Cons: "Wifi stopped working halfway"

Cons: "Great"

Pros: "Everything was fine. Delta did a great job."
Cons: "The kid screaming in my ear for 3 hours"

Pros: "That we finally arrived."
Cons: "That we didn't arrive even remotely close to when we were supposed to."

Pros: "Total Experience of Flying on this Airline ."
Cons: "No Comment."

Cons: "Cramped seating for premium Econ"

Pros: "It’s was super smooth! Fast service and great customer service."
Cons: "The intercom was a little messed up."

Pros: "It was short and fast."

Pros: "Great movie selection"

Pros: "Delta did a really good job as always. Cheaper, more comfortable, and a WAY better experience than Alaska Airlines."
Cons: "Nothing."

Pros: "Not much . The boarding process took forever and the lines through TSA took longer .. no direction to lines and I was standing for 10 min before saying something to someone and they said o there’s another line."
Cons: "Almost everything besides the staff on the plane"

Pros: "Kara was really nice to us."
Cons: "Noisy plane."

Cons: "The plane bathroom was old and junky"

Pros: "Other than the delay by the Hong Kong Airport controller, everything went smoothly. The plane was late to Seattle."
Cons: "The luggage custom clearing would be much better if we could do it like the Vancouver BC where an electronic monitor was used to identify one's luggage without the need to handle them manually. Much more efficient and allowing folks to get on the connecting flights easier."

Pros: "Movies"
Cons: "Lack of legroom in economy"

Cons: "Food was bad."

Cons: "Poor WiFi. Paid extra to get it, but didnt sporadic at best."

Cons: "Nothing"

Pros: "None of it!! Poor selection"
Cons: "All of it. Again poor selection"

Pros: "Boarding super excellent! Also: Best landing I've ever experienced! Props to the pilot!!"

Cons: "Paid $28 for a Wi-Fi package that didn't work. No refund...."

Cons: "There was a kid screaming on both flights and t was not a good time"

Pros: "Nice and attentive staff, smooth on and off."

Pros: "Boarding was easy"
Cons: "Arrived 15 mins late and then taxied for another 5-10 mins."

Cons: "horrible boarding management in SJC."

Pros: "Bags arrived on the belt quickly"
Cons: "Why is there not saying precheck to use after you've been funneled through customs? ATL is advanced enough to have kiosk for arrival, even for those confused and not with global entry, but then forces you to wait in security line instead of the typically faster tea precheck line. Every minute I'm in line, I'm not spending money"

Cons: "Enforce your baggage size and number limits. A significant number of passengers take bags onboard that are oversized."

Pros: "The landing experience."
Cons: "The organization of serving meals."

Pros: "I enjoyed not having a layover."
Cons: "I do not like being charged to bring a bag. I feel like a 560 fee should include a bag."

Pros: "Nothing"
Cons: "We finally got toward the runway then had to sit there for about 25 minutes because there was a technical error."

Pros: "The crew was awesome and boarding was quick"

Cons: "Delay of 1 h at Philadelphia to Syracuse !!"

Pros: "Not much crew stayed in back almost the whole 6 1/2 hr flight and seemed not to friendly"
Cons: "It would have been better if they had departed when they said they were going to after a delay. Flight was delayed first 1 hr then two more hours. The airline finally posted that it would depart a 4 PM and we didn't even start boarding until 5PM. Then they tried to rush us on so that everyone was standing on the HOT jetway for 10 min waiting to get on the plane. Plane didn't take off til 5:35 PM. Over all on this trip I had three flights that were delayed. I'll think twice before taking American Air again."

Cons: "It ridiculous how small the seats and aisles are. It not fun flying any more"

Pros: "Quick flight. Took longer boarding than air time!"

Pros: "Friendly staff and helpful"
Cons: "Did not fly out of Ontario, I was being led to fly out of LAX since there was a delay. Ended up flying out of John Wayne Airport."

Pros: "great"

Pros: "Nice and clean and seats were comfy"
Cons: "No outlet to charge devices"

Pros: "Cheap. Easy. Got me to my destination"

Pros: "Friendly service"

Cons: "I still have not received my luggage"

Pros: "Nothing"
Cons: "Everything!"

Pros: "Price and schedule."
Cons: "Do not like how this or any airlines board passengers."

Pros: "Timeliness"
Cons: "Nothing"

Pros: "Everything!"
Cons: "Nothing!"

Cons: "bag got lost checking it at the gate in dtw, bag went to santa barbara, completely wrong airport. huge inconvenience"

Pros: "Tv in front of every seat, how far the seats reclined."

Cons: "Fat ads sitting next to me should have purchased 2 seats"

Pros: "I like that they have complimentary snacks"

Cons: "Small narrow seats"

Cons: "Turbulence was horrible That there is no internet"

Pros: "Kayak did not refund or have an option to exchange my ticket for a later time in the year."
Cons: "My tickets were 415.00 and I wanted to change the dates and couldn't since I bought from a third party I had to pay an extra 400."

Pros: "It was fine"

Pros: "All"

Pros: "Everything"

Pros: "Everybody was nice my ride was comfortable and they treat me with respect"
Cons: "I like everything"

Pros: "not beat up"
Cons: "people trying to get extra carry on on"

Cons: "I was told I had to check my duffle bag at the gate, that there was no room for it. When I dot to my dirty seat I found room for three of my bags in the overhead compartment."

Cons: "Broken down seat cushion ."

Pros: "The seats were very comfortable"
Cons: "Just wish the bag checked staff would've been more polite"

Cons: "The people were rude, the food was mediocre."

Cons: "Departure to late hard to get other fly conection ."

Pros: "Nothing"
Cons: "Uncomfortable. No entertainment."

Pros: "My back is probably even more worst than what it is ,I had poor back support...u had to sit up the wholetime and no pillows.Wish you all had reclining seats and a Lil pillow or something.Everytime I travel I'm never comfortable sleeping,if the trip is far."
Cons: "The seats,no cushion ,no pillows."

Pros: "The complementary snacks and drinks were good"
Cons: "Our flight attendant was late which caused us to be late so I had to change my flight and take a taxi go to LAX to catch a different flight and I was up for a total of 25 hours until I arrived at my final destination(my hotel) thanks a lot I will never use American Airline again if I have a choice of other airlines"

Pros: "We have no other complaints. It was all good."
Cons: "There was no air conditioner on the airplane . made it very uncomfortable ."

Cons: "They boarded group 1 all at once. I was group 2. They boarded all of us all at once. It was a cluster!. I haven't flew in 6 years. But when I did they boarded by so many rows. Not all at once . Boarding was horrible. It was like a cattle drive."

Pros: "Easy boarding, im about 6'3 so i was a bit uncomfortable being in the middle seat (not airlines fault) overall good first experience."
Cons: "Would have liked to be able to sit by my spouse being my first time on an airplane. Wasnt an option?"

Pros: "Cool TV roomy seats , friendly staff."

Pros: "Overall good.."
Cons: "Good............."

Pros: "Everyone was friendly and helpful"

Pros: "On time..."
Cons: "No phone charging at seats, no personal video in setback..."

Cons: "Attendants made NO attempt to move me. Unlike comedies about heavy people on both sides, this Was NOT funny."

Pros: "The crew was pleasant."
Cons: "My wait for a wheelchair was not good at all I was assigned for one but someone else that had declined there took mines and I had to wait. As I arrived to Phoenix. I was not impressed with that"

Cons: "Equipment problems"

Pros: "I arrived safely at my destination on time. Airport was nice and clean in Reno."

Pros: "Nothing was overlooked. My beverage was always full and the kind gentleman who cared for the 1st class kept walking around to check all our needs. Excellent service!!!"
Cons: "Attention to details. Food was also delicious. Fillet mignon with lobster Mac and cheese. Yummy for my tummy, indeed!!!"

Cons: "Missed it do to late take off"

Pros: "Everything from boarding to offloading went smoothly and orderly."

Pros: "On time, efficient"
Cons: "Hoping bag charge goes away."

Pros: "The crew was so polite and helpful."
Cons: "Nothing could be improved for this short flight!"

Pros: "Fast boarding in good order"

Pros: "We were on time and the flights were excellent. Liked the way the pilot and the crew interacted"

Pros: "Upon arrival at my gate departing to Durham with a 2 year old handful. I was excited to hear the attendant call for travelers with small children to board first. The thought of boarding at the same time as everyone else was giving me anxiety."
Cons: "Once I shuffled through tons disgruntled travelers because of my "child privilege" the attendant rolled her eyes and took a deep breath at the amount of time it took me to get to my ticket. Mind you, it makes sense I would have it somewhere convenient, but like I said single traveller, 2 year old handful. She scanned my ticket and flogged her hair in the air telling me take my stuff to the front of the plane. While the other attendant tagged all my items."

Pros: "I didn't fly.I bought the ticket for my son. He had no complaints. You should ask in your questionnaire if the booked flight was for self or someone else."

Pros: "This was a short flight. The only issue was the boarding. Took a while for me to get to my seat."

Cons: "TSA took forever, other than that. My flight boards at 0540 and I got there exactly at 0545. The plane already made its way to the runway and wouldn't wait an extra 10 mins for passengers to enter."

Pros: "2.5 HR layover lost bag"

Pros: "Great staff."
Cons: "A crying baby that say behind me."

Pros: "Convenient, cheap, best route"
Cons: "Incredibly uncomfortable seats on the express jets - we joked that we need to bring stadium cushions next time. For a full day of traveling, I would consider a more expensive route with another airline than tolerating the hard seating they offer."

Cons: "The airplane was freezing, and I'm 23 years old and very used to flying."

Pros: "All went well. Pleasant attendants."

Pros: "It was inexpensive"

Pros: "that they warned me the plane was extra small and checked my carry-on at the gate for free."
Cons: "that they didn't really advertise how small of a plane I would be flying. I guess you're supposed to research every plane before purchasing tickets now."

Cons: "My TSA Precheck status would not print on the boarding pass. My number was in the system. I've used it multiple times flying UAL."

Pros: "Time and confort"

Cons: "Ticket agents did not communicate with passengers on why there was a delay and weren't willing to help passengers find alternate routes to their destination."

Pros: "Agents checking baggage were unbelievably slow. Good thing there wasn't a long line."

Pros: "Fast getting my seat assignment. The guy at the gate counter was nice and courteous."
Cons: "TSA line was ridiculously long. Only one checkpoint open for the entire terminal."

Cons: "Could not get seat assignment 24 hrs in advance. Website said see desk. Phone call to United said pay more $ get a seat. Had to check in twice, once with bags...still no seat...wait in line again at gate for seat."

Pros: "Very friendly staff"
Cons: "I got stuck in the back of the plane and I did not realize the seats had even less room back there."

Pros: "Nothing"
Cons: "You guys robbed me"

Cons: "No cash food and beverage"

Pros: "That trip was great to Housto!"

Pros: "I liked that 1 out of our four flights had more room & personal tvs."
Cons: "I did not like the fact that out of our four flights three were not too comfortable... & no tvs on three out of four"

Pros: "On time and friendly"

Pros: "None"
Cons: "No refund for my resheduling of flght. I has a valid reason with a valid documentaion"

Pros: "WiFi was awesome"
Cons: "Wish the TV preview was continuous & pay for movies but watch regular TV work no charge"

Pros: "Getting home"
Cons: "Delays delays delays"

Pros: "Hassle free booking(no hidden fees) comfortable seats which for me being 6foot6 isn't always the case. And the free selection on the united airlines app was an awesome bonus"

Cons: "They crushed my luggage but replaced the carry on after."

Cons: "The cold air near floor"

Cons: "My TSA wasn't tagged to my ticket"

Pros: "Got to check 2 carry on pieces for free because too many people had carry on bags. We had paid to check one bag and would have to pick it up anyway, so checking extra pieces was not a problem and actually was very much appreciated."
Cons: "15 minutes late in taking off because an airline associate failed to close out a screen on the computer. It took too long to figure out the problem."

Cons: "Three gate changes prior to departure"

Cons: "Seating on this aircraft is poor at best!"

Pros: "Quick and on time"
Cons: "Personnel"

Pros: "Turn off the damn screen in front of me. Programs are insulting'tv"
Cons: "Tv screen"

Cons: "Three of the four flights were delayed. It seems that this is business as usual for United."

Pros: "Everything went smoothly from arriving to the airport to landing and getting my baggage."

Pros: "On time!"
Cons: "No jetway, long walk to the next gate and then the same long walk back down to board the plane for the second leg of the trip."

Cons: "Way to expensive"

Cons: "It was an enjoyable trip, no complaints whatsoever."

Pros: "Boarding on time and easy Seats super comfy Tv was great"
Cons: "Staff not attentive or friendly Not many food options"

Cons: "Delays caused missed connections in not directions and terrible rerouting plus lost luggage"

Pros: "The time of inflight service"
Cons: "No inflight wifi"

Pros: "On time departure and early arrival, which enabled me to make tight connection and get to destination on schedule. Premium Econ seating was comfy. UA personnel told the truth and were competent, efficient and nice."

Pros: "It was a very smooth trip. No issues"

Cons: "Plane broke"

Pros: "Not only do I get the best price. The fact that you told me what carousel to get my bag from was new to me. I alway check kyak first but now I love u guys. I know my travel site and its kayak"

Pros: "The crew was reassuring when we were running to board and helped my husband, who had trouble walking."

Pros: "Everything"
Cons: "Don’t charge for food"

Pros: "It was good"
Cons: "All those extra fees even for a drink!!! First time on frontier not sure if I would use it again"

Pros: "Early, friendly staff"
Cons: "No WiFi"

Cons: "5 hour delay, horrible last minute communication. Second time in a row this has happened with Frontier. Will never fly them again at any price."

Pros: "Boarding was fast, Polite staff, Very nice crew."

Cons: "Due to all the delays on my first flight I just decided To re-book a different flight back I will never fly with this company again terrible the only reason they get a star because I can’t give them nine terrible"

Pros: "Nothing"
Cons: "Late. Late.Late Staff seemed rude"

Pros: "I liked that there were no issues with my flight I was able to just board , get there and have no problems"
Cons: "I don’t like the fees for everything. It kinda just made me annoyed that there were fees attached to everything that doubled the cost of my flight."

Pros: "Everything went fairly smooth. The safety speech was clever."
Cons: "Paying for beverages."

Pros: "Chairs don't recline. Bags sent to wrong claim area. No leg room. Plane was freezing."

Pros: "I felt safe throughout the whole trip; the landing was on if the smoothest landings I've felt ever. Frontier is the only airline I have taken."
Cons: "n/a"

Cons: "Frontier charges for carry ons. Ridiculous!"

Cons: "Being nickeled and dimed to death."

Cons: "The price of beverages/food."

Pros: "Cheap fares"
Cons: "Squished in like sardines."

Pros: "Staff need to communicate. Misinformation and now luggage is missing after we were delayed in des Moines for hours."

Cons: "I provided my frequent flyer number. You did not provide me TSA Pre-Check ticket. (My frequent traveler number is a TSA Pre-check number)"

Pros: "The flights didn't cost too much."
Cons: "They charge for anything they can."

Cons: "Frontier airlines as a whole is not worth the money"

Pros: "Everyone was courteous."
Cons: "Did not know that a carry on cost extra money. No complimentary drinks. Wish things had been more upfront when ticket was bought."

Pros: "Nothing"
Cons: "Bad service"

Pros: "Helpful employees"
Cons: "Nothing"

Pros: "We had the nicest stewardess that I think I've ever had."
Cons: "The checkin lines were extremely long despite pre-checking."

Pros: "Everything"

Pros: "I enjoyed the speed of boarding and organization."
Cons: "I don't like the price of the food it's a little to over priced."

Pros: "The captain and stewardess were very nice and accommodating."
Cons: "The plane was very very dirty. It hadn't been cleaned in quite a while."

Cons: "I have back problems and the seat did not lean back which helps relieve discomfort"

Cons: "I was unaware Frontier had gone the ultra economy route like Spirit and started charging for Carry On and printing boarding passes. Should be disclosed up front, not after purchase."

Pros: "Price"
Cons: "Didn't like the "surprise" baggage & carry-on fees."

Pros: "Paying for a carry on and no complimentary drinks just water"

Cons: "Very tight space and super uncomfortable chairs--no cushion and don't even lean back."

Cons: "I'm not happy that I wasn't notified in advance that there would be an added $40 per bag. When flying with other airlines usually one bag and carry on is included in the price. I am not happy that upon arival I was notified my one bag would be an extra $40. That should have been discussed before."

Cons: "bag fees and slow boarding"

Pros: "The price. I did not like the hard seat, the cramped row, the staff selling booze to those around me and watching them get drunk, the loud noise of the engine, the feeling of being like a sardine in a small can, being held once we boarded for a maintence issue for 50 minutes. It is no longer enjoyable flying. All most of the U.S airlines care about is their profits...the bottom line."
Cons: "See all of above."

Pros: "Great price though."
Cons: "Comfort is horrific, food and drinks you have to pay for... Really bad."

Pros: "nothing"
Cons: "everything"

Pros: "Nothing"
Cons: "Everything"

Pros: "Smooth landing."
Cons: "The added charges for my self contained firearms."

Pros: "attendants were helpful and friendly"
Cons: "would like some reading materials since they don't have entertainment anymore."

Pros: "Really...."
Cons: "Carry on charge, and the web site is a mess, will not allow seating or registration. Required to go to the airport to complete. It kept take e back to the home page."

Cons: "I specifically searched for IAD (Dulles) and you returned results for DCA (Reagan) I think you need to have some type of confirmation window so that people realize that you have switched airports on them."

Pros: "Arrived 15 min Early"

Pros: "nice service and don't tying wrong customer information!"

Pros: "All was good!"

Cons: "The representative at the gate was rude and unpleasant."

Pros: "The plane was clean, and we arrived early on each leg of the trip by about half an hour, the staff were kind. Frontier does charge for bags either checked or carry on, and it was cheaper for us to check one bag rather than each carry on. I knew frontier charged for bags having flew with them a few times, so that wasn't unexpected. True it's not a first class experience, but it was exactly what I'd expect from a budget carrier, I got to my destination early and without hassles and that's really all I was looking for."

Cons: "Baggage fee info on site makes me feel that i have to pay for every carry on even small bag"

Cons: "Don't like the carry on fee!! Just put it in the cost of the ticket. Charging for a cup of coffee? Lame!"

Pros: "I don't usually even do reviews but since flying with Frontier from many places. But being military and flying from multiple cities and going with Frontier I have experience super cheap tickets through other websites, quick check ins, free baggage because I am military and non-stop flights that have great take off and arrival times. Frontier is my favorite out of the many other airlines I have taken."

Read more about Alaska Airlines
COVID-19 information

Safety measures for airlines flying from Ontario

Airlines flying from 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 Ontario

Mandatory masks

Masks required on board, masks provided on flights from Ontario

Social distancing seating

Middle seats unavailable to book on flights from Ontario

Pre-flight testing

Testing for antibodies, testing for symptoms for flights from Ontario

Book cheap flights from Ontario to Anywhere

Recent round-trip flight deals

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nonstop
Frontier
1h 22m
ONT - SFO
4/1
Thu
nonstop
Frontier
1h 25m
SFO - ONT
3/5
Fri
nonstop
Frontier
1h 04m
ONT - LAS
3/7
Sun
nonstop
Frontier
1h 01m
LAS - ONT
3/19
Fri
nonstop
Frontier
1h 15m
ONT - PHX
3/22
Mon
nonstop
Frontier
1h 13m
PHX - ONT
4/4
Sun
nonstop
Frontier
1h 22m
ONT - SFO
4/8
Thu
nonstop
Frontier
1h 25m
SFO - ONT
3/19
Fri
nonstop
Frontier
1h 15m
ONT - PHX
3/21
Sun
nonstop
Frontier
1h 13m
PHX - ONT
3/5
Fri
nonstop
Frontier
2h 13m
ONT - DEN
3/7
Sun
nonstop
Frontier
2h 28m
DEN - ONT
3/5
Fri
nonstop
Multiple Airlines
2h 10m
ONT - DEN
3/9
Tue
nonstop
Multiple Airlines
2h 28m
DEN - ONT
3/7
Sun
nonstop
Multiple Airlines
1h 15m
ONT - PHX
3/9
Tue
nonstop
Multiple Airlines
1h 38m
PHX - ONT
3/15
Mon
nonstop
Multiple Airlines
1h 15m
ONT - PHX
3/17
Wed
nonstop
Multiple Airlines
1h 42m
PHX - ONT
3/12
Fri
nonstop
Multiple Airlines
2h 13m
ONT - DEN
3/14
Sun
1 stop
Multiple Airlines
25h 15m
DEN - ONT
3/11
Thu
nonstop
Multiple Airlines
2h 13m
ONT - DEN
3/14
Sun
1 stop
Multiple Airlines
25h 15m
DEN - ONT
3/6
Sat
nonstop
United Airlines
2h 10m
ONT - DEN
3/8
Mon
nonstop
United Airlines
2h 23m
DEN - ONT
3/20
Sat
nonstop
Alaska Airlines
2h 45m
ONT - SEA
3/23
Tue
nonstop
Alaska Airlines
2h 30m
SEA - ONT
5/10
Mon
nonstop
American Airlines
1h 19m
ONT - PHX
5/13
Thu
nonstop
American Airlines
1h 13m
PHX - ONT
3/2
Tue
nonstop
American Airlines
1h 21m
ONT - PHX
3/18
Thu
nonstop
American Airlines
1h 42m
PHX - ONT
3/27
Sat
1 stop
Delta
9h 15m
ONT - SEA
3/31
Wed
nonstop
Delta
2h 39m
SEA - ONT
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Recent one-way flight deals

3/14
Sun
nonstop
Frontier
1h 22m
ONT - SFO
3/10
Wed
nonstop
Frontier
2h 13m
ONT - DEN
3/7
Sun
nonstop
Frontier
2h 13m
ONT - DEN
3/5
Fri
nonstop
Frontier
1h 04m
ONT - LAS
3/12
Fri
nonstop
Frontier
1h 15m
ONT - PHX
3/7
Sun
nonstop
Frontier
1h 22m
ONT - SFO
3/21
Sun
nonstop
Frontier
1h 01m
ONT - LAS
3/5
Fri
nonstop
Frontier
4h 26m
ONT - MCO
3/7
Sun
nonstop
Frontier
4h 28m
ONT - MCO
3/11
Thu
nonstop
Frontier
1h 01m
ONT - LAS
3/26
Fri
1 stop
Multiple Airlines
22h 41m
ONT - LAS
3/28
Sun
1 stop
Multiple Airlines
30h 07m
ONT - MCO
3/16
Tue
nonstop
Alaska Airlines
2h 35m
ONT - SEA
3/29
Mon
1 stop
Multiple Airlines
30h 07m
ONT - MCO
3/6
Sat
nonstop
United Airlines
2h 10m
ONT - DEN
3/2
Tue
nonstop
American Airlines
1h 21m
ONT - PHX
3/8
Mon
1 stop
Multiple Airlines
21h 24m
ONT - SEA
3/20
Sat
nonstop
Delta
2h 48m
ONT - SEA
3/3
Wed
1 stop
American Airlines
6h 28m
ONT - DEN
3/20
Sat
1 stop
Delta
5h 54m
ONT - SEA
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