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ONT

$34 Find cheap flights to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Ontario departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Fri 7/12
Fri 7/19

Search hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario
In the last 7 days travelers have searched 44,212,782 times on KAYAK, and here is why:

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Cheap flight deals to Ontario

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights to Ontario 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 and deals for you by selecting your travel dates.
Choose your dates
5:15 am - 6:36 amSFO-ONT
1h 21mnonstop
7:36 am - 9:02 amONT-SFO
1h 26mnonstop
$38Frontier
Find Deal
Sat, Aug 17 - Tue, Aug 20
6:00 am - 7:25 amSFO-ONT
1h 25mnonstop
6:08 pm - 7:32 pmONT-SFO
1h 24mnonstop
$43Frontier
Find Deal
Sat, Aug 3 - Wed, Aug 7
8:10 pm - 9:31 pmIAH-ONT
3h 21mnonstop
6:00 am - 11:12 amONT-IAH
3h 12mnonstop
$164United Airlines
Find Deal
Fri, Sep 13 - Sun, Sep 15
8:15 am - 11:09 amSEA-ONT
2h 54mnonstop
1:21 pm - 6:24 pmONT-SEA
5h 03m1 stop
$167Delta
Find Deal
Tue, Jul 16 - Tue, Jul 30
9:26 pm - 11:59 pmSEA-ONT
2h 33mnonstop
7:00 am - 12:32 pmONT-SEA
5h 32m1 stop
$186Alaska Airlines
Find Deal
Wed, Jul 17 - Sun, Jul 21
6:35 pm - 11:59 pmDEN-ONT
6h 24m1 stop
1:21 pm - 6:49 pmONT-DEN
4h 28m1 stop
$196Delta
Find Deal
Thu, Aug 15 - Sun, Aug 18
5:00 am - 8:50 amORD-ONT
5h 50m1 stop
9:35 am - 5:49 pmONT-ORD
6h 14m1 stop
$198American Airlines
Find Deal
Tue, Aug 6 - Fri, Aug 16
5:00 am - 10:01 amHOU-ONT
7h 01m1 stop
2:36 pm - 10:08 pmONT-HOU
5h 32m1 stop
$198American Airlines
Find Deal
Sat, Sep 14 - Wed, Sep 18
9:26 pm - 11:59 pmSEA-ONT
2h 33mnonstop
7:00 am - 12:32 pmONT-SEA
5h 32m1 stop
$206Alaska Airlines
Find Deal
Fri, Jul 26 - Mon, Jul 29
8:25 pm - 9:46 pmIAH-ONT
3h 21mnonstop
6:00 am - 11:12 amONT-IAH
3h 12mnonstop
$215United Airlines
Find Deal
Thu, Oct 3 - Thu, Oct 10

Flights to Ontario - Travel Insights & Trends

Get data-powered insights and trends for flights to Ontario to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to Ontario?

These are the best prices found by users searching on KAYAK in the last 72 hours.
If traveling to Ontario, the cheapest city to fly from in the last 3 days was Seattle, with flights as low as $34 one-way and $38 round-trip. Flights from San Francisco are the most searched and start at $38 for a return trip.

How much is a flight to Ontario?

The average and cheapest price for all flights to Ontario from each origin found by users searching on KAYAK in the last month.
On average, a flight to Ontario costs $140. The cheapest price found on KAYAK in the last 2 weeks cost $17 and departed from Las Vegas. The most popular routes on KAYAK are San Francisco to Ontario which costs $102 on average, and Portland to Ontario, which costs $173 on average.
See prices from:

What is the cheapest day to fly to Ontario?

The average price of all flights to Ontario clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to Ontario is Friday where tickets can be as cheap as $248. On the other hand, the most expensive day to fly is Sunday, where prices are $316 on average.

What is the cheapest month to fly to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights to Ontario is September, where tickets cost $297 on average for one-way flights. On the other hand, the most expensive months are June and November, where the average cost of tickets from the United States is $517 and $491 respectively. For return trips, the best month to travel is January with an average price of $255.

What is the cheapest time of day to fly to Ontario?

The average price for all flights to Ontario depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to Ontario is generally in the afternoon, when flights cost $298 on average. The most expensive time of day to fly to Ontario is generally in the evening, which is peak travel time and where the average cost of a ticket is $396.

What is a good deal for flights to Ontario?

If you’re looking for cheap airfare to Ontario, 25% of our users found tickets to Ontario for the following prices or less: From Sacramento $37 one-way - $103 round-trip, from Phoenix Sky Harbor Intl Airport $39 one-way - $61 round-trip, from Salt Lake City $49 one-way - $68 round-trip.

How far in advance should I book a flight to Ontario?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price, you should book around 0 weeks before departure. For the absolute cheapest price, our data suggests you should book 42 days before departure.

Which airlines fly to Ontario?

Southwest, Frontier, and American Airlines are commonly used to fly to Ontario from United States. See the amount of flights per week for popular airlines flying to Ontario.

Which airline offers the most flights to Ontario?

Of the 8 airlines that fly to Ontario, Southwest offers the most flights, with around 300 per week, followed by Frontier with 123 flights per week.

How long is the flight to Ontario?

The duration of your flight to Ontario depends on your departure and arrival airports. Obviously any flights that include a layover will also be longer. The most popular routes to Ontario on KAYAK are from San Francisco, which takes 1h 28m, Miami, which takes 5h 24m, New York, which takes 5h 52m, and Newark, which takes 5h 54m.

How many direct flights to Ontario are there each day?

There are around 107 direct flights from within United States to Ontario every day. Most flights depart in the morning, with 11:00 am the most common departure time and 43% of flights departing in the morning.

How many direct flights to Ontario are there each week?

Each week there are around 743 direct flights from within United States to Ontario. The most common day for departures is Friday, with 17% of flights taking off on this day.

How many long-haul flights are there to Ontario each week?

Each week, there are 68 medium-haul flights (3-6 hour flight duration) and 542 short-haul flights (up to 3 hour flight duration) to Ontario. There aren't any long-haul flights (6-12 hour flight duration).

How many cities have direct flights to Ontario?

From the United States, there are direct flights to Ontario from 16 cities. The city with the most direct flights is Denver, with 98 direct flights each week.

Good to know

Low season

January

High season

May

Cheapest flight

$34
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from Seattle to Ontario

When to book flights to Ontario

Are your dates flexible? Find out the best times to travel to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. The information is for flights to Ontario based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs - booking Ontario flights

  • Can I take a rideshare from the Ontario International Airport (ONT) to my final destination?

    Yes, you can order an app-based rideshare once you land and have claimed your baggage. After baggage claim, follow the signs for “Ride-Share Pickup Location” and these are located near the east end of each passenger terminal.

  • Does the Ontario International Airport (ONT) have services for travelers with limited mobility?

    Yes, ONT offers several services for passengers with reduced mobility. These include wheelchair rental and assistance navigating the airport after landing, as well as services for deaf and visually impaired travelers. Contact your airline in advance if you will need to utilize any of these services.

  • Can I fly directly to the Ontario International Airport (ONT) from any other major US hubs?

    Yes, you will find plenty of direct flights to Ontario from major US cities. For example, United Airlines and Frontier Airlines both operate direct flights from Denver (DEN) to Ontario. You will also find direct flights on board JetBlue from New York City’s JFK airport. Alaska Airlines also offers a direct flight from Seattle to Ontario.

  • What other cities are served by the Ontario International Airport (ONT)?

    The ONT airport mostly serves the city of Ontario, but there are many cities and attractions nearby that it serves, as well. These include Riverside and San Bernardino, as well as the San Bernardino National Forest. It is also quite close to Anaheim, Los Angeles, and Pasadena, California.

  • Are there good restaurants in Ontario International Airport?

    Passengers with flights to Ontario have several options when it comes to where to eat. Look for Schlotzsky’s Deli, El Paseo Cafe and Bar, and Route 66. You will find the restaurants and vending machines in Terminals 2 and 4.

  • Are there good malls or shopping places close to Ontario International Airport?

    Ontario Mills is the largest shopping mall and outlet mall in the Ontario area. Look for a variety of shops at Ontario Mills including Bath & Body Works, North Face, Coach, Polo, and Saks. Or, stop by the movie theater and enjoy a movie in between flights.

  • What kind of services does Ontario International Airport offer?

    At the airport, you can find shopping and dining options, free WiFi for up to 4 hours, cell phone parking lots, an inter-terminal shuttle, and a military lounge. Baggage carts are located for your use throughout the airport.

  • Do hotels in Ontario offer free shuttle service from Ontario International Airport?

    If you are looking for free shuttle service from the airport to a local hotel, you have two choices. Both Azure Hotel and Suites and Red Roof Inn Ontario offer free shuttle service to guests. They are both located approximately 5 minutes from the airport.

  • What is the best way to get from Ontario International Airport to Salt Oasis?

    Salt Oasis is located 6.1 miles from Ontario International Airport. The trip will take approximately 10 minutes by taxi by I-15N. Once you arrive, you can enjoy a salt bath and the salt caves. This is a relaxing way to spend time between flights or a way to de-stress before heading on to your final destination.

  • What is the cheapest flight to Ontario?

    If traveling to Ontario, the cheapest city to fly from in the last 3 days was Seattle, with flights as low as $34 one-way and $38 round-trip. Flights from San Francisco are the most searched and start at $38 for a return trip.

  • How far is Ontario from central Ontario?

    Central Ontario is 3 miles away from Ontario.

  • What is the name of Ontario’s airport?

    There is only 1 airport in Ontario, called Ontario (ONT). It can also be referred to as Ontario or Ontario Intl.

  • How much is a flight to Ontario?

    On average, a flight to Ontario costs $140. The cheapest price found on KAYAK in the last 2 weeks cost $17 and departed from Las Vegas Harry Reid Intl Airport.

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

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back with another airline.

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

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Ontario

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Ontario flight deals.
  • If you are picking up a rental car when you land at the Ontario International Airport (ONT), you will need to take the free shuttle bus to the offsite rental car center. You can find the shuttle bus pickup points in front of terminals 2 and 4 at the Terminal Islands.
  • If you are flying into ONT with a pet, you will be happy to find several pet relief areas both inside and outside the terminal buildings. You will find them at terminal 2 gate 210 and terminal 4 gate 410. Otherwise, they are at the far end of each terminal building.
  • If you need to relax after your flight to Ontario, you can take advantage of the Aspire Lounge, which is open to all travelers flying into and departing from the ONT airport. You will find these in terminal 2 at gate 210 and in terminal 4 at gate 410.
  • Landed at the Ontario International Airport (ONT) and not sure where to go next? Visit one of the Travelers Aid desks. The desks are located both in terminal 2 and terminal 4 and are staffed by volunteers committed to helping you get the most out of your trip to Ontario.
  • Have you arrived at the Ontario International Airport (ONT) but your luggage has not? Head to the baggage claim counters in the arrivals area to report the incident to the representatives on duty. They will be able to track your luggage and arrange a delivery to your accommodation address once your luggage arrives in Ontario for your convenience. Just be sure to report it before you leave the airport.
  • Passengers that book flights to Ontario will want to take advantage of the free shuttle provided by the airport. The Ontario Courtesy Shuttle will take passengers between the terminals, parking lot 5, and the Consolidated Rental Car Facility. Shuttle services operate 24 hours a day.
  • Those that are in the military will want to stop by the USO Lounge. Access to the lounge is free to all active military and their families. In the lounge, you can find a TV, snacks, computers, a child care area, and a library. It is open from 6 a.m. to 10 p.m. and can be found in the West Wing for passengers who want somewhere quiet to wait between flights.
  • If you’re picking up or dropping people off at Ontario International Airport, check out the free cell phone lots. You can park there for free while you drop off or wait for your passengers. This area is designed to prevent people from circling the airport endlessly. You can park for free for one hour. No overnight parking allowed.
  • It’s easy to get to and from Ontario International Airport using a variety of transportation options. Look for the car rental services in ConRac which can be reached using the free shuttle service. Or, look for the shuttle, bus, taxi, or train services near the baggage claim area.
  • If you’re looking for business services while you’re at Ontario International Airport, you’ll want to visit the airport hotel located 6 minutes away. The Ontario Airport Holiday Inn offers fully equipped meeting rooms as well as printing, copying, scanning and office supplies.
See more tips

Prefer to fly non-stop to Ontario?

Find which airlines fly direct to Ontario, which days they fly and book direct flights.

Nonstop departures

United States to Ontario

Monday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Tuesday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Wednesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Thursday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Friday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Saturday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Sunday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

See more direct flights

Nonstop returns

Ontario to United States

Monday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Tuesday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Wednesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Thursday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Friday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Saturday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Sunday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

See more direct flights
See more direct flights

Top 5 airlines flying to Ontario

 
See real verified KAYAK customer reviews for airlines flying to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from the United States to Ontario. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 9269 reviews
7.9Comfort
8.2Boarding
8.6Crew
7.3Entertainment
7.3Food
Airline reviews

I had never flown Alaska Airlines before. I’ll definitely use them again. Seats were comfortable and roomier than expected.

10.0 ExcellentBernice, Jun 2024EWR - SAN
Read more about Alaska Airlines reviews

I had never flown Alaska Airlines before. I’ll definitely use them again. Seats were comfortable and roomier than expected.

Seats lack shoulder and elbow room. The lady next to me was short and slightly heavy with knee problems, she kept jabbing me with her elbow while playing her game on her phone for 2 hours, the duration of the whole flight. It was frustrating and annoying! I was in the middle seat, there was no space to adjust to avoid her arm jabbing me.

I like the big picture of the Eskimo on the tail of the plane.

Being seated next to the engine was awful! I was nauseous the entire trip from pre-take-off, flying to landing. The engine vibration was very strong!

The crew was the best I’ve had the experience of flying with. A misbehaving child was making things difficult for me with bopping my tray table, taking my snack, and continually tapping or bumping me. The crew quietly and respectfully moved me to another seat, and thanked me for my patience. They couldn’t have been more kind. Their professionalism really stood out to me and I am more than happy to leave a great review for them!

I would have appreciated notification that our flight was moved to another gate LAST MINUTE so that we would not have missed it. We got no such notice and had to spend another night to catch an available flight in the morning, which was huge inconvenience. We will never fly Alaska again.

Flight was delayed 2 hours. It was too cold inside the cabin. My seat mate had no jacket so she was shivering the entire flight. The stewardess says there’s no available blanket.

The airline was way too cold. We were freezing, I don’t know if that is normal. Overall it was pretty good flight. Always flown Alaska Airlines and I am not changing.

Mediocre is best way to describe. Bare bones narrow seats, Dirty pulldown tray, unfriendly cabin crew who were in a hurry to serve tiny drinks and tiny snacks. (Compared to much better Hawaiian Airlines experience, .. no comparison!)

I wasn't impressed with the entertainment selection, and the snack sizes were small. But the entire crew was professional and did a great job. For that I would fly Alaska again.

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

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

Had a broken tray in business class. Crew just shrugged it off.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

Crew was very cooperative and professional. Passenger's first checked in bag should be free.

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

Flighty delayed on boarding - then group 1 had to check their carry on bags but groups 3 and beyond could carry bags on - very inconvenient for weekend business trip with no checked baggage. Then delayed on the runway - before take off. No communication from pilot on why or how long. Wifi/Entertainment didn't work for 4+ flight. Upon arrival, attendants announced wrong carousel for baggage claim - everyone was waiting at the wrong place for their checked bags. This was a mess united!

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

My husband and I pre-ordered our food, but they did not have my husband’s order, and my cheese plate was very average. I asked for a blanket and was told they don’t carry blankets on domestic routs. The flight was on time and smooth!

There were delays on both ends. It made it less than excellent. This plane was great though

Everything was great except for the wifi was junk. Crew was super friendly and helpful

Attendants were rude. Scowling. Seats were miserable and we paid extra.

Fight crew was not very attentive and the bastions were gross!

Our flight was great we left Kona earlier and got into LAX almost an 1hour earlier as well. LAX AA is in repair so to get out and found our bus to get pick up was a bit confusing.

Plane was good but was delayed. probably not AA fault but caused a 1 hour delay. Seating was cramped.

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

I can say I will not be taking this airline again any time soon. Seat were uncomfortable and too tight. Lack of chair screen and little overhead space.

Did not realize seats did not recline. Best to travel in an exit row... No question

I strongly dislike Frontier. I find them barebones, the seats not particularly comfortable, the nickel and diming is maddening, the app is TERRIBLE - super confusing to navigate, and the last 4 frontier flights I have flown have been on AVERAGE 2 hours late, one ruining a fancy night out in Vegas with reservations made well in advance, which was nodded to with a measly 5000 miles, which translates to almost nothing. At least credit a free checked bag or something.

8 hr delay. had to buy another ticket with another airline

Four and a half hour delay in total. What frustrates me most is the poor communication and disorganization.

I appreciated the upgrade to free cary-on bag and seat selection at no charge

FRONTIER SUCKS! The agent downstairs tricked me into booking, just to get to the gate. At the gate, they told me they couldn't help. I then called Customer Service. They and the gate attendants kept blaming each other. Neither side was willing to help the customer.

The agent at check-in was strident, unwelcoming, and condescending to customers ahead of me.

Flight was delay 9hrs and nothing was provided at airport, had to go and get a room to sleep in, paid for Uber back and fort with no offers until we landed back home a 1hr later for a $75 voucher for a future flight.

Didn't like anything..entire crew was very rude to everyone on the flight. Plane old and the trays fall down on you the while time you're flying. Charged more for a carry on bag than for the plane ticket itself. Did make it from point a to point b, but worth the extra money to fly with another airline

9 hours of delay!! Was not able to check my luggage that I paid for!!!

Book Cheap Ontario Plane Tickets

Recent round-trip flight deals

 
These are the cheapest round-trip flights to Ontario found on KAYAK in the last 72 hours.
8/17Sat
nonstopFrontier
1h 21mSFO-ONT
8/20Tue
nonstopFrontier
1h 26mONT-SFO
$38
8/3Sat
nonstopFrontier
1h 25mSFO-ONT
8/7Wed
nonstopFrontier
1h 24mONT-SFO
$43
9/13Fri
nonstopUnited Airlines
3h 21mIAH-ONT
9/15Sun
nonstopUnited Airlines
3h 12mONT-IAH
$164
7/16Tue
nonstopDelta
2h 54mSEA-ONT
7/30Tue
1 stopDelta
5h 03mONT-SEA
$167
7/17Wed
nonstopAlaska Airlines
2h 33mSEA-ONT
7/21Sun
1 stopAlaska Airlines
5h 32mONT-SEA
$186
8/15Thu
1 stopDelta
6h 24mDEN-ONT
8/18Sun
1 stopDelta
4h 28mONT-DEN
$196
8/6Tue
1 stopAmerican Airlines
5h 50mORD-ONT
8/16Fri
1 stopAmerican Airlines
6h 14mONT-ORD
$198
9/14Sat
1 stopAmerican Airlines
7h 01mHOU-ONT
9/18Wed
1 stopAmerican Airlines
5h 32mONT-HOU
$198
7/26Fri
nonstopAlaska Airlines
2h 33mSEA-ONT
7/29Mon
1 stopAlaska Airlines
5h 32mONT-SEA
$206
10/3Thu
nonstopUnited Airlines
3h 21mIAH-ONT
10/10Thu
nonstopUnited Airlines
3h 12mONT-IAH
$215

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to Ontario found on KAYAK in the last 72 hours.
9/12Thu
nonstopFrontier
2h 37mSEA-ONT
$34
6/25Tue
nonstopFrontier
1h 23mSFO-ONT
$34
8/27Tue
nonstopAmerican Airlines
3h 07mDFW-ONT
$72
7/9Tue
nonstopAlaska Airlines
2h 33mSEA-ONT
$83
7/16Tue
1 stopDelta
6h 45mSEA-ONT
$88
8/10Sat
nonstopDelta
2h 55mSEA-ONT
$89
9/9Mon
nonstopAmerican Airlines
3h 21mDFW-ONT
$90
8/7Wed
1 stopAlaska Airlines
3h 55mSEA-ONT
$98
8/15Thu
nonstopUnited Airlines
3h 16mIAH-ONT
$108
8/27Tue
1 stopUnited Airlines
10h 21mEWR-ONT
$113

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Last minute flights to Ontario

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to Ontario that are departing in the next 10 days.
6/13Thu
nonstopFrontier
1h 23mSFO-ONT
6/22Sat
nonstopFrontier
1h 27mONT-SFO
$87
6/16Sun
nonstopFrontier
1h 23mSFO-ONT
6/27Thu
nonstopFrontier
1h 27mONT-SFO
$88
6/14Fri
multi-stopAmerican Airlines
8h 10mLGA-ONT
6/16Sun
multi-stopAmerican Airlines
8h 28mONT-LGA
$286
6/14Fri
multi-stopAmerican Airlines
8h 00mJFK-ONT
6/16Sun
multi-stopAmerican Airlines
8h 09mONT-JFK
$286
6/13Thu
multi-stopDelta
11h 00mLGA-ONT
6/18Tue
multi-stopDelta
12h 19mONT-LGA
$291
6/15Sat
multi-stopDelta
11h 07mLGA-ONT
6/18Tue
multi-stopDelta
12h 19mONT-LGA
$296
6/13Thu
nonstopUnited Airlines
1h 35mSFO-ONT
6/18Tue
nonstopUnited Airlines
1h 25mONT-SFO
$354
6/14Fri
nonstopUnited Airlines
1h 32mSFO-ONT
6/19Wed
nonstopUnited Airlines
1h 25mONT-SFO
$384
6/14Fri
nonstopAlaska Airlines
2h 33mSEA-ONT
6/27Thu
nonstopAlaska Airlines
2h 40mONT-SEA
$442
6/16Sun
multi-stopAlaska Airlines
27h 14mDEN-ONT
7/17Wed
multi-stopAlaska Airlines
25h 44mONT-DEN
$547

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Flights to Ontario

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - United States

Cabin classes:

$447
$478
$193
$36

Browse origins:

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