ONT

$53 Find Cheap Flights from Dallas 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 from Dallas to Ontario departing on 2/26. 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
1 adult, Economy, 0 bags

KAYAK searches 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 in flight searches from Dallas to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Dallas to Ontario, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$133
Overall average: $166
Frontier
Sun 2/15Sun 3/1
DFW - ONT • Non-stop
Cheapest one-way
$49
Typical prices: $89-$177
Frontier
Thu 2/26
DFW - ONT • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
American's Main Cabin Extra offers early boarding.
Frontier's Economy Bundle includes a carry-on.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Frontier
Cheapest • from $133 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
DFW
-
ONT
Cheapest • 35% average savings
DFW
-
ONT
Most popular
Insights
Insights
Insights
Insights
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 20% compared to booking last minute.
Insights
Insights
Insights
Insights
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We hope you love your trip to Ontario!
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Flight Deals

Cheap Flights from Dallas to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dallas 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dallas to Ontario

Sun, Feb 15 - Sun, Mar 1
Frontier Logo
1:00 pm - 2:29 pm
DFW
-
ONT
3h 29mnonstop
Frontier Logo
2:06 pm - 7:11 pm
ONT
-
DFW
3h 05mnonstop
$133Frontier
Sun, Feb 15 - Sun, Feb 22
Frontier Logo
1:00 pm - 2:29 pm
DFW
-
ONT
3h 29mnonstop
Frontier Logo
2:06 pm - 7:11 pm
ONT
-
DFW
3h 05mnonstop
$134Frontier
Tue, Mar 10 - Wed, Mar 11
Frontier Logo
1:36 pm - 3:05 pm
DFW
-
ONT
3h 29mnonstop
Frontier Logo
5:10 pm - 10:10 pm
ONT
-
DFW
3h 00mnonstop
$135Frontier
Wed, Mar 11 - Sat, Mar 14
Frontier Logo
2:48 pm - 4:15 pm
DFW
-
ONT
3h 27mnonstop
Frontier Logo
6:39 pm - 11:34 pm
ONT
-
DFW
2h 55mnonstop
$136Frontier
Sun, Feb 22 - Fri, Feb 27
Frontier Logo
1:00 pm - 2:29 pm
DFW
-
ONT
3h 29mnonstop
Frontier Logo
2:21 pm - 7:26 pm
ONT
-
DFW
3h 05mnonstop
$137Frontier
Sat, Feb 21 - Mon, Feb 23
Frontier Logo
5:45 am - 11:59 pm
DFW
-
ONT
20h 14m
1 stop
Frontier Logo
3:28 pm - 5:47 am
ONT
-
DFW
12h 19m
1 stop
$138Frontier
Tue, Feb 24 - Tue, Mar 3
Southwest Logo
5:20 pm - 6:40 pm
DAL
-
ONT
3h 20mnonstop
Southwest Logo
11:00 am - 3:45 pm
ONT
-
DAL
2h 45mnonstop
$219Southwest
Sat, Feb 21 - Sat, Feb 28
Southwest Logo
2:10 pm - 3:30 pm
DAL
-
ONT
3h 20mnonstop
Southwest Logo
5:35 am - 10:20 am
ONT
-
DAL
2h 45mnonstop
$233Southwest
Fri, Feb 27 - Wed, Mar 4
Southwest Logo
7:45 pm - 9:05 pm
DAL
-
ONT
3h 20mnonstop
Southwest Logo
11:00 am - 3:45 pm
ONT
-
DAL
2h 45mnonstop
$234Southwest
Tue, Mar 17 - Tue, Mar 24
Delta Logo
6:05 am - 11:47 am
DAL
-
ONT
7h 42m
1 stop
Delta Logo
10:25 pm - 9:42 am
ONT
-
DAL
9h 17m
1 stop
$239Delta
Booking Insights

KAYAK's insights & trends for Dallas to Ontario flights

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

What is the cheapest Dallas to Ontario flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Dallas to Ontario costs $98 on the route between Dallas/Fort Worth Airport (DFW) and Ontario (ONT). Over the past month, this route was, on average, 35% cheaper than other Dallas-Ontario routes. It is also the most popular route.

What’s the cheapest day of the week to fly from Dallas to Ontario?

The average price of all round-trip flights from Dallas to Ontario clicked on KAYAK for each day over the last 12 months.

When flying from Dallas to Ontario, you should consider leaving on a Thursday and avoid Wednesdays if you are looking for the best rates. For your return to Dallas, you’ll find the best rates on Thursdays and the most expensive ones on Sundays.

What is the cheapest month to fly from Dallas to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Dallas 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 from Dallas to Ontario is February, where tickets cost $166 (return) on average. On the other hand, the most expensive months are January and November, where the average cost of round-trip tickets is $269 and $269 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Dallas to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Dallas to Ontario, you should book around 2 weeks before departure, which saves you about 20% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Expert advice

Expert advice for your flight from Dallas to Ontario

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Frontier

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Jennifer Simonson

Jennifer Simonson

Expert on ONT and DFW

Jennifer Simonson is driven by her lifelong commitment to exploring the globe. Her insatiable curiosity had led her to immerse herself into diverse locations like Oklahoma City and Pismo. Her hotel recommendations are the result of the myriad hotels she's stayed at across her travels. Along her journey, she cherishes engaging conversations with locals, indulging in the finest ice cream, trying her hand at surfing, and embarking on nature-filled hikes.

Good to know

Cheapest flight$49
Flight from Dallas/Fort Worth Airport to Ontario

When to book flights from Dallas to Ontario

Are your dates flexible? Find out the best times to travel from Dallas 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. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Dallas to Ontario

  • What is the cheapest flight from Dallas to Ontario?

    In the last 3 days, the lowest price for a flight from Dallas to Ontario was $49 for a one-way ticket and $133 for a round-trip.

  • Do I need a passport to fly between Dallas and Ontario?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Dallas and on arrival in Ontario.

  • Which airports will I be using when flying from Dallas to Ontario?

    Dallas is served by 2 major airports and there is only 1 main airport in Ontario. You will leave Dallas from one of these airports: Dallas Love Field or Dallas/Fort Worth. You will be arriving at Ontario.

  • Which aircraft models fly most regularly from Dallas to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Dallas to Ontario?

    SkyTeam, and oneworld are the airline alliances operating flights between Dallas and Ontario, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Dallas 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 from Dallas to Ontario.

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

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

  • What is the Hacker Fare option on flights from Dallas 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 to Dallas with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Dallas 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 from Dallas up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Prefer to fly direct from Dallas to Ontario?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Dallas to Ontario.
Find which airlines fly direct from Dallas to Ontario Airport, which days they fly and book direct flights.

Direct departures

Dallas to Ontario

Monday

American Airlines, Frontier, Southwest

American Airlines, Frontier, +1 more

Tuesday

American Airlines, Southwest, Frontier

American Airlines, Southwest, +1 more

Wednesday

American Airlines, Southwest, Frontier

American Airlines, Southwest, +1 more

Thursday

American Airlines, Frontier, Southwest

American Airlines, Frontier, +1 more

Friday

American Airlines, Frontier, Southwest

American Airlines, Frontier, +1 more

Saturday

American Airlines, Frontier, Southwest

American Airlines, Frontier, +1 more

Sunday

American Airlines, Frontier, Southwest

American Airlines, Frontier, +1 more

See more direct flights

Direct returns

Ontario to Dallas

Monday

American Airlines, Frontier, Southwest

American Airlines, Frontier, +1 more

Tuesday

American Airlines, Southwest, Frontier

American Airlines, Southwest, +1 more

Wednesday

American Airlines, Southwest, Frontier

American Airlines, Southwest, +1 more

Thursday

American Airlines, Frontier, Southwest

American Airlines, Frontier, +1 more

Friday

American Airlines, Frontier, Southwest

American Airlines, Frontier, +1 more

Saturday

American Airlines, Frontier, Southwest

American Airlines, Frontier, +1 more

Sunday

American Airlines, Frontier, Southwest

American Airlines, Frontier, +1 more

See more direct flights

Reviews of the top 5 airlines serving from Dallas to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Dallas to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dallas 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
SouthwestOverall score based on 4268 reviews
8.6Crew
7.5Entertainment
8.0Comfort
7.0Food
8.1Boarding
Airline reviews

3 hour delay. Had to change plans and was still delayed.

2.0 MediocreAnonymous, Jan 2026
SFO - SAN
Read more Southwest reviews

3 hour delay. Had to change plans and was still delayed.

The flight crew was extremely rude and especially not helpful when our flight was delayed.

Check-in, Boarding and flight were smooth. All the employees and crew was very nice and funny. They gave the kids crayons and workbooks to keep them occupied which was a big win. I’ve flown Southwest many times and that’s the first time I’ve seen that and it is a great addition.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Had to get off plane from prior flight even though I had to reboard same plane to continue to my final destination.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

There was no wifi available on this flight. And there were no screens, no onboard entertainment, no entertainment options at all. It was like travelling in the 1990s again, except without even a main screen for options. Seats, as usual, were tight and uncomfortable.

It would have been better if the flight wasn't delayed by 2.5 hours

Delta flight Delay for ,more that two hours i.e original flight was 6.30 PM and it starts at 8.45 PM, When we connect Delta team for meal vouchers as it is late arrival in designation,But we did not get it as per delta policy , which is not good for mid night arrival,

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Wasn't a Delta issue I don't think, but seems there was a Delta flight at each of the 2 Dallas airports at the same exact time, both to Atlanta. I was evidently booked on the one at Love Airport, but the Carey transport shuttle took me to DFW instead and I ended up missing the flight by just a few minutes. Was able to book a Southwest flight from Love Airport, but was a big loss of time and an inconvenience.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

The crew took good care of us. The flight from ATL to SFO is a longer one, and there were multiple beverage offerings. I like the 757's that Delta uses. Good airplane that is comfortable. I do wish Delta would separate Priority boarding from the better seats. I would gladly take a smaller seat in an open row than be jammed into Comfort just to get priority boarding, just to make sure I don't have to check a bag.

I booked an aisle seat and was given a middle. At 6'4" 230lbs, it is not ideal to fly in the middle row for myself and passengers.

Concern Regarding Significant Gate Delay and Jet Bridge Issue Dear Customer Relations Team, I am writing to express my disappointment with the experience I had on my recent flight AA 2414 on Sunday January 18, 2026. What should have been a routine departure turned into a frustrating and avoidable delay due to an issue with the jet bridge at the gate. As a result, the flight was delayed by approximately 90 minutes while multiple gate changes were attempted. The lack of clear communication during this period made the situation even more challenging. Passengers were left uncertain about the cause of the delay, the expected timeline, and the next steps. This not only disrupted travel plans but also created unnecessary stress for everyone on board. I understand that operational issues can arise, but a malfunctioning jet bridge and the resulting extended delay suggest an area where procedures or equipment maintenance may need attention. I hope you will review this incident to prevent similar disruptions in the future. I would appreciate acknowledgment of this concern and consideration of appropriate compensation for the inconvenience and lost time caused by this delay. Thank you for taking the time to review my experience. I look forward to hearing from you. Sincerely, Dion Dillard

The seat cushions were very worn so they were extremely uncomfortable.

Delayed, no updates, had a rewards number but was not working

AA should improve their in air internet & entertainment options. Seems unreasonable to charge $20/hr and should have some form of free connections. The entertainment options are also pretty limited, movies are outdated and the series only show 3-5 episodes.

Amazing I love American. I’ll never fly anyone else if I can help it.

Flight delay and multiple gate changes including a change near boarding time to another terminal, which in DFW is a pain. Pre-boarding delay and also a further delay on the ground after boarding. About an hour and a half total delay.

Seats were much more cramped then on the 737. Narrower and rows closer together. Flight was absolutely packed and the plugs under the seats didn't work. Was forced to check my bag even though previous flight had no issue with it.

We never made it due to delays on both ends. Gate attendant said it was mechanical but the system said otherwise, so no compensation. That’s not right.

The pilot greased the landing and the crew was fantastic.

The flight was delayed by 2 hours and we had no food or water or chargers

Horribly late because they had no crew!!! And then jet bridge didn’t work!! Then we arrived at a gate at lax miles away that we had to take a shuttle to a terminal!! I was over 3 hours late to getting the LA! Should have been here at 8:30 and at an appointment at 10:30 and arrived and left lax at 11 am!! Horrible experience!!!

Once again, the staff seem to think they are above the customers and treat everyone with disdain, belittling people.

Flight was canceled 8 hours before departure for lack of operational control and prepositioning of a plane. Then had the audacity to say it was because of weather, however there was no weather here in California or New Orleans or in between. It was the weather in Florida, Florida it had nothing to do with our flight path just the plane was supposed to fly us. 8 hours is more than enough time to move a plane anywhere in the US. That left me with a bill of 1200 dollars to re book a flight oh and kayaks insurance what a joke. Probably will never use kayak or spirit ever again terrible companies terrible customer service. I’ll also let everyone and anyone know this was an abomination and only for the customer. Also will be making a report to the DOT on bad business practices on behalf of kayak and spirit as well as the BBB. Do better, take care of your customers and don’t suck

The airplane had a strange noise that was constant throughout the flight. Thankfully I had noise-cancelling over-ear headphones that muted much of it.

it was terrible. flight was cancelled hours before the flight without a given reason and no other booking available .

Honestly horrible. The plane on the way back was delayed 6 times with no explanation on why. When I asked for a refund or some money back because I had to miss a day of work because of the desk, they told me no. Because of how poorly it was handled I will most likely never take spirit again

I hope you continue to be one of the great company

The plane was freezing and everyone had on their winter coats. I pulled out my sweaters out of my carryon to cover myself and put on an extra pair of socks. They offered NO FREE drinks or snacks on a 6 hour flight. The seats don’t have plugs or charges or any form of entertainment- so I just played my one downloaded game on my phone because I couldn’t sleep because I was too cold. Miserable flight though we landed safely.

Always comes in handy when I want a quick weekend getaway.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

i was unable to check in the flight. refund requested

I think Frontier was very good at communication. Their app worked very well. Loading was great and the flight was nice and easy.

Great for the price. No wifi or entertainment, but gate agents and crew were fantastic and we boarded quickly and left on time.

Decent clean onboard experience. Okay discount airline experience. Unfortunately, any customer service interactions are difficult and unhelpful. There is no service. Also, a premium seat only gets you premium boarding if you line up first. Once they start general boarding you must go to the back of the line. Not very premium

The crew was mostly okay. The flight attendant who answered our questions was curt and unhelpful unfortunately. He seemed upset and I understand having off days.

Very bad! No good service delayed my second connection flight

They canceled flight. Hard to believe there was even a plane incoming for us to get on

Book with frontier airlines with the mentality that they'll cancel your flight, kick you off and lose your luggage. Anything besides that is a win. Compare prices with other airlines (to include luggage) and if frontier is still worth it, book it but know all of their policies.

Everything you need to know for your flight from Dallas to Ontario

Information on your arrival and departure airports