Find cheap flights from Ontario to the United States

Find cheap flights from Ontario to the United States

Search hundreds of travel sites at once for deals on flights to the United States

Round-trip
Economy
Ontario (ONT)
United States
Sun 5/16
Sun 5/23
Any month
Compare vs. KAYAK |

Good to know

Low season

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

High season

DecemberMost popular time to fly with an average 19% increase in price.

Average price round-trip

$831(avg. price over the last 2 weeks)

Good deal round-trip

$104or less

Good deal one-way

$50or less

Top tips for finding cheap flights to the United States

  • Looking for a cheap flight? 25% of our users found tickets from Ontario to the United States for the following prices or less: to Denver $75 one-way - $126 round-trip, to Portland $92 one-way - $156 round-trip, to Seattle $98 one-way - $167 round-trip
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be November and December. The cheapest month to fly to the United States is August.
  • 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 - booking United States flights

Which airlines have a flexible cancellation policy for flights from Ontario to the United States due to COVID-19?

Which airlines apply social distancing measures on flights from Ontario to the United States due to COVID-19?

How long is the flight to the United States from Ontario?

What is the cheapest flight to the United States from Ontario?

Which airlines fly to the United States?

Are there United States travel restrictions currently due to Coronavirus?

How does KAYAK find such low prices on flights to the United States?

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

What is the Hacker Fare option on flights to the United States?

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to the United States?

Top 4 airlines serving Ontario to United States

Scores according to KAYAK customer reviews

8.3
Alaska Airlines
Overall score based on 29,360 reviews
8.5
Boarding
8.3
Comfort
8.8
Crew
7.9
Entertainment
7.9
Food
Airline reviews

Pros: "Middle seas was open"
Cons: "More social distance during check in. Smoother landing"

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: "Everything and everyone was awesome"

Pros: "Pasco is just the best little airport! Very clean sand FASSSST security"

Pros: "Serve"
Cons: "No Free Meal"

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: "Alaska has always treated us well. I would recommend them anytime."

Pros: "Charging ports were helpful"
Cons: "Flights attendant was rude"

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: "Crew was nice"
Cons: "Nothing really"

Cons: "Nothing that I can think of at the moment"

Pros: "Timeliness"
Cons: "Seating"

Cons: "Space on airplanes"

Cons: "The cabin temperature was very hot"

Pros: "Good"

Cons: "Luggage drop was severely understaffed. We had checked in, had boarding passes but there was a 45 minute wait just to drop off a checked bag."

Cons: "Food"

Cons: "Food is always bad."

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

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

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

Cons: "Nothing"

Cons: "The wrap didn't taste too well."

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

Cons: "Change the movies more ofti"

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: "Loved how close the gates were"
Cons: "Nothing"

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: "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: "I was starving because of my short connection time and couldn't have lunch - wanted to eat something solid and they just had boxes with fruits and cheese."

Pros: "I always have a great experience on Delta! Thank you"

Cons: "Snacks if possible"

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"

Pros: "Very informative staff"
Cons: "Was late"

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

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

Cons: "You overbooked your capacity and gave me an option to fly to LAX and find my ride home. Unbelievable."

Pros: "Everything but the smiling, smile more !!"
Cons: "everyone needs to smile more. This is the job they chose, a smile goes along way!"

Pros: "Everything was great."
Cons: "Nothing. It was smooth and efficient."

Cons: "The experience was excellent."

Pros: "It was fine the next leg of the trip was cancelled"

Pros: "Everything went smoothly, i had a good seat."

Cons: "Everything was good except the delay of the fight itself and then the baggage we received almost an hour later with priority tags."

Pros: "I’m alive"
Cons: "An hour late. 3 gate changes. Missed connection in Phoenix. Typical AA."

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."

Pros: "Emergency row seating is great for really tall skinny people. Plenty of legroom but seat width by no means helpful."

Cons: "Better snacks"

Pros: "Everything was good!"

Pros: "Boarding was fairly quick and on time. Transfer in Phoenix was no problem. Luggage arrived OK."
Cons: "Seating is too small and too close to next rows. Unhappy with having to pay for seat assignments and checked bag while watching gate agents refuse to enforce overhead bag size limits."

Cons: "Delay upon delay"

Pros: "The catering was on point."

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

Pros: "People were ok"
Cons: "The boarding process is a mess at this airport. Feel sorry for anyone with accessibility issues. Stairs to all planes."

Cons: "Entertainment is becoming too complicated for us old heads. Food, I still resent having to pay for something that is ed to be included in my fare."

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

Cons: "I tried to change my seat to an available window seat several times after online check in opened using the app and consistently received error messages so ended up stuck in a middle seat."

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: "The staff was impressive with how friendly and welcoming they were! Everything went smoothly and I am a happy passenger!"

Cons: "On time"

Cons: "Surprised to see they charge $50 carry on fees at the gate."

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

Pros: "loved having a movie to pass the time. Super friendly attendants."

Cons: "Ct for. R"

Pros: "The free movies and plug in phone charger ..."
Cons: "No problems or worries from me"

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: "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"

Cons: "all flights delayed"

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: "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 ."

Pros: "I was very pleased with Captain and crew, very friendly and helpful."
Cons: "Seat comfort was the only issue I had."

Pros: "Liked everything just wanted a better seating choice"
Cons: "The middle seat"

Cons: "Checking my luggage and then re-checking my luggage !!! Very annoying and very inconvenient. This is not passenger / customer friendly !!!"

Pros: "$$$$"

Cons: "The people were incredibly rude"

Cons: "I don't like Airbus airplanes. I think they are cheep airplanes. You got ok because it got me here"

Pros: "Clean plane."
Cons: "Add on cost for seat and bag. Will avoid Frontier if possible."

Cons: "Airport security was terrible."

Pros: "I expect a refund. Ridiculous"

Pros: "The efficiency of check in"
Cons: "The seating was uncomfortable."

Cons: "Anything"

Cons: "You could not adjust the seat backs, stuck in the upright and locked position for 4 hours. Tight leg room. Would not do it again."

Pros: "It was simple and easy,overall very good"
Cons: "It was very windy when we got to Vegas and the turbulance was very shaky"

Pros: "Not much"
Cons: "Almost everything"

Pros: "Convenient"
Cons: "Paying $2 for a CocaCola"

Cons: "Delayed"

Pros: "Everything was great !!!"

Cons: "Horrible!!! Late doy and I Need to pay for my hand luggage. Never travel with Frontier!"

Pros: "Carry on charge not happy."
Cons: "Carry on charge is ridiculous."

Pros: "What did you like? nothing"
Cons: "What didn't you like? everything"

Pros: "The attendants were very capable"
Cons: "They made me check my carry-on charged me $30 for or $40 to carry it on."

Pros: "Cheap Fare"
Cons: "Delay"

Cons: "You have to pay to reserve a seat."

Pros: "Good Service in a general."
Cons: "As a continuous improvement: Cleanliness into the plane need to be improve :(. Trash under the seat and aisles was observed."

Pros: "none stop to vegas & back"

Cons: "Couldn't get a glass of water to save my life."

Pros: "The staff was friendly. We didn't crash."
Cons: "The plane was falling apart. No entertainment. No comfort. The reading light was broken."

Pros: "Great deal for short notice."

Pros: "Quick and easy boarding"
Cons: "had to pay for both baggage check...and carry on.....little to much!!!!!.....but overall it was a good experience ...."

Pros: "Everything"

Cons: "That you had to ask for a cup of water"

Pros: "Rude and not carring about the customer frist"
Cons: "I could explain but its not going to do anything"

Cons: "Both flights delayed, return 31/2hrs....10 $voucher that we couldn't use on the plane and expired 20 min. After we got off. I will try to avoid Frontier in the future Stop nickel and dining customers at every option!"

Pros: "Nothing special"
Cons: "They charge additionals for everything and give only water once in the plane. At the end after chargin for every piece of luggage "EVERY" the ticket is more expensive than others carriers."

Cons: "They suck"

Pros: "Nothing"
Cons: "The most inefficient and least cost effective airline in the history of airlines. I am so disappointed in my experience that I may spend the rest of my days advocating boycotting this company."

Pros: "The employees are extremely pleasant and professional"
Cons: "Both legs were delayed"

Pros: "Nothing"
Cons: "Flights are always delayed or out right cancelled"

Cons: "0 leg room, pay for food, 0 entertainment. Solid performance again from frontier."

Pros: "Same as above. Same as above"

Pros: "It was very punctual"

Cons: "Well atleast coffee supost to be free on the bord"

Cons: "No complimentary drinks...charges for EVERYTHING!!"

Cons: "left hour late not weather related just poor planning once arriving were told to leave the terminal we arrived at to retrieve luggage which was wrong so after midnight had to wait about 20 minutes to return to original terminal to retrieve luggage so terrible experience with frontier!!!"

Pros: "Not flying frontier to Las Vegas there are no flights available"

Cons: "Me and someone else was assigned the same seat."

Pros: "Good"

Pros: "Nothing"
Cons: "3 hours of delay, no respect and appreciation of the wait."

Cons: "The plan is extremly small. No wifi or entertainment"

Cons: "The stewardess"

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 United States

Recent round-trip flight deals

5/23
Sun
nonstop
Frontier
1h 02m
ONT - LAS
5/26
Wed
nonstop
Frontier
1h 04m
LAS - ONT
5/24
Mon
nonstop
Frontier
1h 02m
ONT - LAS
5/25
Tue
nonstop
Frontier
1h 04m
LAS - ONT
5/26
Wed
nonstop
Frontier
1h 02m
ONT - LAS
5/29
Sat
nonstop
Frontier
1h 04m
LAS - ONT
5/22
Sat
nonstop
Frontier
1h 02m
ONT - LAS
5/24
Mon
nonstop
Frontier
1h 04m
LAS - ONT
5/26
Wed
nonstop
Frontier
1h 02m
ONT - LAS
5/29
Sat
nonstop
Frontier
1h 04m
LAS - ONT
5/21
Fri
nonstop
Frontier
1h 17m
ONT - PHX
5/24
Mon
nonstop
Frontier
1h 18m
PHX - ONT
5/20
Thu
nonstop
Frontier
1h 02m
ONT - LAS
5/22
Sat
nonstop
Frontier
1h 04m
LAS - ONT
7/23
Fri
nonstop
Frontier
2h 27m
ONT - DEN
7/28
Wed
nonstop
Frontier
2h 22m
DEN - ONT
5/21
Fri
nonstop
Frontier
2h 18m
ONT - DEN
5/25
Tue
nonstop
Frontier
2h 23m
DEN - ONT
8/21
Sat
nonstop
American Airlines
1h 19m
ONT - PHX
8/25
Wed
nonstop
American Airlines
1h 14m
PHX - ONT
8/19
Thu
nonstop
Multiple Airlines
1h 17m
ONT - PHX
8/23
Mon
nonstop
Multiple Airlines
1h 14m
PHX - ONT
8/18
Wed
nonstop
American Airlines
1h 19m
ONT - PHX
8/23
Mon
nonstop
American Airlines
1h 14m
PHX - ONT
5/21
Fri
nonstop
Multiple Airlines
2h 18m
ONT - DEN
5/25
Tue
1 stop
Multiple Airlines
7h 18m
DEN - ONT
9/22
Wed
nonstop
Multiple Airlines
2h 20m
ONT - DEN
9/28
Tue
1 stop
Multiple Airlines
5h 07m
DEN - ONT
7/10
Sat
1 stop
Multiple Airlines
5h 03m
ONT - DEN
7/17
Sat
nonstop
Multiple Airlines
2h 22m
DEN - ONT
8/19
Thu
nonstop
Alaska Airlines
2h 35m
ONT - SEA
8/23
Mon
nonstop
Alaska Airlines
2h 29m
SEA - ONT
6/19
Sat
nonstop
Alaska Airlines
2h 35m
ONT - SEA
6/21
Mon
nonstop
Alaska Airlines
2h 36m
SEA - ONT
6/29
Tue
1 stop
Delta
5h 25m
ONT - SEA
7/9
Fri
nonstop
Delta
2h 42m
SEA - ONT
6/9
Wed
1 stop
United Airlines
7h 44m
ONT - MIA
6/16
Wed
1 stop
United Airlines
8h 02m
MIA - ONT
8/2
Mon
nonstop
JetBlue
5h 30m
ONT - JFK
8/6
Fri
nonstop
JetBlue
6h 10m
JFK - ONT
Show more results

Recent one-way flight deals

5/24
Mon
nonstop
Frontier
1h 02m
ONT - LAS
7/17
Sat
nonstop
Frontier
2h 26m
ONT - DEN
5/29
Sat
nonstop
Frontier
1h 02m
ONT - LAS
5/25
Tue
nonstop
Frontier
2h 16m
ONT - DEN
5/20
Thu
nonstop
Frontier
1h 02m
ONT - LAS
5/23
Sun
nonstop
Frontier
1h 17m
ONT - PHX
5/20
Thu
nonstop
Frontier
1h 02m
ONT - LAS
9/12
Sun
nonstop
Frontier
1h 04m
ONT - LAS
8/26
Thu
nonstop
Alaska Airlines
2h 35m
ONT - SEA
5/22
Sat
nonstop
American Airlines
1h 22m
ONT - PHX
11/1
Mon
nonstop
American Airlines
1h 15m
ONT - PHX
8/19
Thu
nonstop
Alaska Airlines
2h 35m
ONT - SEA
5/25
Tue
1 stop
Multiple Airlines
18h 33m
ONT - SEA
5/22
Sat
nonstop
American Airlines
1h 22m
ONT - PHX
6/6
Sun
nonstop
Alaska Airlines
2h 44m
ONT - SEA
5/25
Tue
1 stop
Multiple Airlines
16h 42m
ONT - DEN
6/11
Fri
1 stop
Delta
4h 51m
ONT - SEA
5/21
Fri
1 stop
Delta
4h 54m
ONT - DEN
9/16
Thu
1 stop
United Airlines
6h 31m
ONT - SEA
7/29
Thu
nonstop
JetBlue
5h 30m
ONT - JFK
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