DFW - ONT

$130 Find Cheap Flights from Dallas to Ontario - Compare and Save

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 7/25. 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.
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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$246
Typical prices: $187-$344
Frontier
Wed 7/29Wed 8/5
DFW - ONT • 1 stop
Cheapest non-stop
$248
Typical prices: $166-$326
Frontier
Mon 8/10Fri 8/14
DFW - ONT • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts and KAYAK users. AI can make mistakes.
Frontier Economy Bundle adds a carry-on and seat choice for better value.
American Main Cabin Extra adds early boarding; Wi-Fi is available to buy.
Expert advice
Expert advice
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Expert advice
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Top airlines
Cheapest • from $246 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
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Airline reviews
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Nonstop flights
You can fly direct with American Airlines and Frontier. Average duration is 3h 06m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top layover airports
Cheapest • Avg $214 (round-trip)
Shortest trip • 4h 55m (one-way)
Insights
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When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 17% compared to booking last minute.
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Insights
When to travel
Cheapest • 31% price drop
Most popular
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Flight Deals

Cheap Flights from Dallas to Ontario (DFW-ONT)

 
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

Wed, Jul 29 - Wed, Aug 5
Frontier Logo
6:58 pm - 11:50 pm
DFW
-
ONT
6h 52m
1 stop
Frontier Logo
6:00 am - 1:19 pm
ONT
-
DFW
5h 19m
1 stop
$246Frontier
Tue, Jul 28 - Thu, Aug 6
Frontier Logo
4:30 pm - 10:04 am
DFW
-
ONT
19h 34m
1 stop
Frontier Logo
8:17 am - 1:31 pm
ONT
-
DFW
3h 14mnonstop
$247Frontier
Fri, Jul 31 - Sat, Aug 1
Frontier Logo
7:31 am - 8:37 am
DFW
-
ONT
3h 06mnonstop
Frontier Logo
6:00 am - 8:36 pm
ONT
-
DFW
12h 36m
1 stop
$248Frontier
Tue, Jul 21 - Sat, Jul 25
Frontier Logo
7:31 am - 8:37 am
DFW
-
ONT
3h 06mnonstop
Frontier Logo
6:00 am - 12:29 am
ONT
-
DFW
16h 29m
1 stop
$249Frontier
Thu, Sep 17 - Thu, Sep 24
Frontier Logo
6:00 am - 7:12 am
DFW
-
ONT
3h 12mnonstop
Frontier Logo
8:07 am - 1:12 pm
ONT
-
DFW
3h 05mnonstop
$250Frontier
Thu, Sep 3 - Tue, Sep 8
Frontier Logo
7:32 am - 8:38 am
DFW
-
ONT
3h 06mnonstop
Frontier Logo
9:37 am - 2:46 pm
ONT
-
DFW
3h 09mnonstop
$251Frontier
Sat, Aug 1 - Tue, Aug 4
Frontier Logo
7:35 am - 8:41 am
DFW
-
ONT
3h 06mnonstop
Frontier Logo
8:58 am - 6:30 am
ONT
-
DFW
19h 32m
1 stop
$252Frontier
Wed, Aug 5 - Sun, Aug 9
Frontier Logo
5:20 am - 10:04 am
DFW
-
ONT
6h 44m
1 stop
Frontier Logo
4:09 pm - 5:48 am
ONT
-
DFW
11h 39m
1 stop
$253Frontier
Sat, Aug 15 - Sat, Aug 22
Multiple Airlines Logo
7:35 am - 8:41 am
DFW
-
ONT
3h 06mnonstop
Multiple Airlines Logo
7:12 am - 4:43 pm
ONT
-
DFW
7h 31m
1 stop
$254Multiple Airlines
Sat, Jul 25 - Tue, Jul 28
Frontier Logo
7:31 am - 8:37 am
DFW
-
ONT
3h 06mnonstop
Frontier Logo
8:17 am - 1:31 pm
ONT
-
DFW
3h 14mnonstop
$255Frontier
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.

How much is a round-trip flight from Dallas/Fort Worth Airport to Ontario?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Dallas/Fort Worth Airport to Ontario departing in July.

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

The average price of all round-trip flights from Dallas/Fort Worth Airport 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 Sundays 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/Fort Worth Airport to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Dallas/Fort Worth Airport 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/Fort Worth Airport to Ontario is September, where tickets cost $185 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $364 and $328 respectively.

Can I save money by flying with a layover from Dallas/Fort Worth Airport to Ontario?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $334 on average.

How far in advance should I book a flight from Dallas/Fort Worth Airport 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/Fort Worth Airport 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/Fort Worth Airport to Ontario, you should book around 2 weeks before departure, which saves you about 17% 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

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.

Ramsey Qubein

Ramsey Qubein

Expert on DFW

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Good to know

Low seasonJanuary
Cheapest flight$130
Best time to beat the crowds with an average 3% drop in price.
Flight from Dallas 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.

Flights from Dallas to Ontario: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Dallas to Ontario 
FraxysFlew with American Airlines
DFW
-
ONT
Feb 2026
Bring your own snacks or sandwich for dinner in the plane.
JoelFlew with American Airlines
DFW
-
ONT
May 2024
Dallas is a very spread out airport, jus make sure that you have enough time to transfer during layovers. Also all the restaurants close fairly early

FAQs for booking Dallas to Ontario flights

  • Does Dallas/Fort Worth Airport (DFW) offer accessible services?

    DFW is a fully accessible airport. The airport has reserved parking spaces that can be accessed using valid disabled parking permits. They offer wheelchair assistance and dedicated seating for passengers with reduced mobility. Hard-of-hearing passengers have TDD telephones for requesting assistance and visual paging services. Low-vision passengers are catered to with signage in Braille.

  • What are the transport options from Downtown Dallas to Dallas/Fort Worth Airport?

    The Dallas Area Rapid Transport has the Orange Line and Green Line Trains operating every 20 minutes from West End Station to DFW Airport Station. The TreTrain of the Dallas Area Rapid Transit operates with an hourly interval, linking Victory Station in Downtown Dallas to Centerport Station in Irving. From the Centerport Station, you can use Line 431 bus to connect to Terminal B in DFW Airport.

  • Which airlines flying from Dallas/Fort Worth to Ontario have sustainable practices?

    Frontier Airlines is among the sustainable airlines flying the DFW to ONT route. It has adopted several sustainable practices, including fuel efficiency and greenhouse gas emission reduction. They are also replacing their old fleet with a new modernized fleet, using sustainable aviation fuel, and optimizing flight routes. They have also introduced carbon offsetting, waste reduction, and recycling programs to meet their sustainable goals.

  • Can a minor travel unaccompanied from Dallas/Fort Worth to Ontario?

    Unaccompanied minors traveling with United from DFW to ONT must be aged 5 to 14 years old. You must accompany your minor for check-in at the airport at least 30 minutes before departure. During check-in, you must provide relevant travel documents, including the minor’s consent form, which the parents or legal guardian fills out. You must also provide your contact information and that of the adult receiving the minor at the destination airport.

  • What is the cheapest flight from Dallas/Fort Worth Airport to Ontario?

    In the last 5 days, the lowest price for a flight from Dallas/Fort Worth Airport to Ontario was $130 for a one-way ticket and $246 for a round-trip.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

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

    Dallas airport is called Dallas/Fort Worth and the only airport in Ontario is Ontario.

  • Which airlines offer Wi-Fi service onboard planes from Dallas to Ontario?

    American Airlines, Delta, Alaska Airlines, and JetBlue offer inflight Wi-Fi service on the Dallas to Ontario flight route.

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

    The Airbus A321-100/200 is the aircraft model that flies most regularly on the Dallas to Ontario flight route.

  • Which airline alliances offer flights from Dallas to Ontario?

    oneworld is the only airline alliance operating flights between Dallas and Ontario.

  • On which days can I fly direct from Dallas to Ontario?

    There are nonstop flights from Dallas to Ontario on a daily basis.

  • Which is the best airline for flights from Dallas to Ontario, Southwest or American Airlines?

    The two airlines most popular with KAYAK users for flights from Dallas to Ontario are Southwest and American Airlines. With an average price for the route of $375 and an overall rating of 7.9, Southwest is the most popular choice. American Airlines is also a great choice for the route, with an average price of $366 and an overall rating of 7.1.

  • 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. Booking your flights between Dallas and ONT can sometimes prove cheaper using this method.

  • 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.

KAYAK’s top tips for finding a cheap flight from Dallas/Fort Worth Airport to Ontario

  • Looking for a cheap flight? 25% of our users found flights on this route for $168 or less one-way and $301 or less round-trip.
  • Consider flying business or first-class from Dallas/Fort Worth International Airport (DFW) to Ontario International Airport (ONT) with American Airlines, Delta Air Lines, or United Airlines. Business-class passengers get complimentary access to the American Airlines Admirals Club Airside of Terminals A, B, C, D, and E, Delta Sky Club Airside of Terminal E, and United Club lounges Airside of Terminal E.
  • Flights from DFW to ONT often include at least a stop. The stopover cities include Denver (DEN) by Frontier, Las Vegas (LAS) by Frontier and Spirit, and Phoenix (PHX) by American.
  • Consider flying with American Airlines from DFW to ONT for a favorable carry-on baggage allowance at no additional charge. The airline allows you to bring a carry-on bag with dimensions limits of 22 x 14 x 9 inches and maximum weight of 40 lbs. You can also bring a personal item on board.
  • If you’re traveling with your pet from DFW to ONT, consider flying with Delta Air Lines. The airline allows small cats, dogs, and household birds who have attained at least 16 weeks of age in the cabin for a fee. You must secure your pet in a carrier with maximum dimensions of 18 x 11 x 11 inches. The combined weight of your pet and its carrier must also not exceed 18 lbs.
  • You can enjoy convenience when traveling with your child from DFW to ONT with United Airlines. The airline offers family-friendly perks, including early boarding, family seating, in-flight entertainment suitable for children, and child-friendly changing rooms.

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/Fort Worth to Ontario.
Find which airlines fly direct from Dallas/Fort Worth Airport to Ontario Airport, which days they fly and book direct flights.

Direct departures

Dallas/Fort Worth to Ontario

Monday

American Airlines,Frontier

American Airlines,Frontier

Tuesday

American Airlines,Frontier

American Airlines,Frontier

Wednesday

American Airlines,Frontier

American Airlines,Frontier

Thursday

American Airlines,Frontier

American Airlines,Frontier

Friday

American Airlines,Frontier

American Airlines,Frontier

Saturday

American Airlines,Frontier

American Airlines,Frontier

Sunday

American Airlines,Frontier

American Airlines,Frontier

See more direct flights

Direct returns

Ontario to Dallas/Fort Worth

Monday

American Airlines,Frontier

American Airlines,Frontier

Tuesday

American Airlines,Frontier

American Airlines,Frontier

Wednesday

American Airlines,Frontier

American Airlines,Frontier

Thursday

American Airlines,Frontier

American Airlines,Frontier

Friday

American Airlines,Frontier

American Airlines,Frontier

Saturday

American Airlines,Frontier

American Airlines,Frontier

Sunday

American Airlines,Frontier

American Airlines,Frontier

See more direct flights

Reviews of the top 3 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.
7.9
SouthwestOverall score based on 4250 reviews
8.1Boarding
8.0Comfort
7.0Food
8.6Crew
7.5Entertainment
Airline reviews

It was just okay, no frills, basic transportation with no luxury. No screens on the seats, no water or drinks on a short flight. Full flight but at least it was on time.

6.0 GoodSteven, Jun 2026
LAS - ONT
Read more Southwest reviews

It was just okay, no frills, basic transportation with no luxury. No screens on the seats, no water or drinks on a short flight. Full flight but at least it was on time.

Flight was constantly delayed with significant changes in time, it was supposed to get to Colorado Springs at 8:30 PM but it got there after midnight.

I don't know why flying out of Sarasota requires two plane changes.

Plane was late. Zero service for 2+ hour flight and it was not that bumpy.

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

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

Our flight to Oakland was great bc the plane was new but it was delayed by 15min not bad at all. Over all it was an 8/10

The flight in it self was good. The delays looking for pilots was unexpected.

This flight left late. We had A46/A47 boarding, but SW boarded 45 people from an interrupted flight ahead of us. It was a zoo. Seats are very uncomfortable, even for a 5’8” person of normal BMI.

The crew was very helpful, nice friendly. The only issue I have was the horrible turbulence that we experienced leaving Dallas love field airport. It lasted about 20 minutes I think.

Flight cancelled. Twice. And no communication. No gate agent. Went past boarding time and had to go and see email from AA. Airport communication was bad

Was put into a seat right behind the toilet that had no entertainment possible but did have plenty of leg room over noisy part of plane.

To have arrived on time and not 3 hours late after having already spent $100 to change to an earlier flight, only to arrive back home close to the original flight time.

American Airlines is a miserable experience. It is predictably miserable, in the sense that every time I fly American, I brace myself for the certainty that it will be unpleasant and uncomfortable. But it is unpredictable in the sense that I never know if the flight will be on time or delayed nine hours (both happened to me this week). I never know if I will be able to sit in the seat that I selected when I purchased the ticket or if I will be told by Customer Service (!!!) that I must relocate from first class to a seat in the back of the aircraft with no explanation (both happened to me this week). Will the food be frozen and half defrosted, or scalding hot? Will the drinks be warm? Will the flight attendants be surly and mean? Will the toilets be cramped and foul? Will the seats be narrow and uncomfortable? Will there be a real electric outlet at the seat, or just an unreliable USB-2 port? Will there be enough seats in the boarding lounge or just a few? Will the boarding process be smooth and efficient, or will the gate agents mess it up and delay it needlessly for 30 or 40 minutes? Will the catering and cleaning crew be prompt or will they take an extra 30 minutes? Will the brakes on the aircraft work properly, or will the pilot delay takeoff for four hours while the ground crew attends to what can only be described as routine maintenance that should have been done the night before? I've eexperienced every one of these unpleasant things this year, 2026. The only thing I can reliably count on is that American will find a new way to make the experience of flying as miserable as they possibly can.

The WiFi would not connect enough for me to do my actual work. It permaspooled, disconnected, said it was connected, then wouldn't open an email... it was frustrating. I am not a tall person, 5'4" - and I felt cramped with little room to reach into my bag under the seat in front of me. I feel sorry for anyone taller than me having to fly. the one positive thing I will add, is the overhead bins are roomy enough to manage more bags than other carriers.

Delayed for mechanical and no updates on what was happening and how long the delay might be.

Smooth flight. From the early boarding and all were on board before departure time and arrived early in ONT. Great crew. Thank you!!!!

did not have enough meal for first class passengers so offer us snack

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

It was fine. I didn't love the food but it was at least a real attempt at serving a meal, unlike my earlier flight from Nashville to Dallas.

Gate not determined until I got to the airport - hard to plan the trip to the airport.

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

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.

Flight was cancelled and was not able to get another flight thru Frontier. Per frontier a refund was issued but I do not see a refund on my Afirm account.

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

I had to cancel within 1hour of the reservation an they put you through hell to . no live customer service desk. I'm handy caped and they make it almost impossible to cancel. They are steeling my money. You should not have that airline on your site. Contact me and I will give you all info. Of what the are doing to me just notable treatment they are set up like that to take people

Was charged 99 dollars for a bag despite agents previously telling me it would be ok. Customer service was unhelpful

I will like you ( Frontier Airlines) to fly into LAX instead of ONT because I live in LA and the subway takes me to my house in just 15 minutes

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

Information on your arrival and departure airports