HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$49+ Cheap flights from Dallas to Ontario (ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
DFW — ONT
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dallas to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Dallas to Ontario are usually found in February or April, booked 43 days in advance, depart on a Thursday or Tuesday and return on a Thursday

Cheap flight deals from Dallas to Ontario

Cheapest flights from Dallas to Ontario
Explore the most affordable flight options available from Dallas to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This Frontier deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/151:00 pm
DFW
-
ONT
Nonstop3h 29m
Frontier
Sun 3/12:06 pm
ONT
-
DFW
Nonstop3h 05m
Frontier
Deal found 1/27$133
This Frontier deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/151:00 pm
DFW
-
ONT
Nonstop3h 29m
Frontier
Sun 2/222:06 pm
ONT
-
DFW
Nonstop3h 05m
Frontier
Deal found 1/27$134
This Super.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/512:55 pm
DFW
-
ONT
Nonstop3h 32m
Frontier
Mon 2/98:05 pm
ONT
-
DFW
1 stop7h 42m
Frontier
Deal found 1/26$135
This Frontier deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/112:48 pm
DFW
-
ONT
Nonstop3h 27m
Frontier
Sat 3/146:39 pm
ONT
-
DFW
Nonstop2h 55m
Frontier
Deal found 1/25$136
This Frontier deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/221:00 pm
DFW
-
ONT
Nonstop3h 29m
Frontier
Fri 2/272:21 pm
ONT
-
DFW
Nonstop3h 05m
Frontier
Deal found 1/25$137
This Frontier deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/219:55 pm
DFW
-
ONT
1 stop12h 04m
Frontier
Sat 2/286:00 am
ONT
-
DFW
1 stop11h 17m
Frontier
Deal found 1/26$138
This Frontier deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/191:00 pm
DFW
-
ONT
Nonstop3h 29m
Frontier
Fri 2/272:21 pm
ONT
-
DFW
Nonstop3h 05m
Frontier
Deal found 1/25$139
This Frontier deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/147:10 pm
DFW
-
ONT
1 stop6h 49m
Frontier
Sun 2/152:06 pm
ONT
-
DFW
Nonstop3h 05m
Frontier
Deal found 1/27$140
This CheapOair deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1010:31 pm
DFW
-
ONT
1 stop21h 51m
Frontier
Thu 2/122:06 pm
ONT
-
DFW
Nonstop3h 05m
Frontier
Deal found 1/27$142
This Frontier deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/212:55 pm
DFW
-
ONT
Nonstop3h 32m
Frontier
Sun 2/810:18 am
ONT
-
DFW
Nonstop3h 02m
Frontier
Deal found 1/26$143
This Frontier deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/512:55 pm
DFW
-
ONT
Nonstop3h 32m
Frontier
Tue 2/108:36 am
ONT
-
DFW
1 stop6h 51m
Frontier
Deal found 1/26$144
This Southwest deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/245:20 pm
DAL
-
ONT
Nonstop3h 20m
Southwest
Tue 3/311:00 am
ONT
-
DAL
Nonstop2h 45m
Southwest
Deal found 1/27$219

Find flight deals from Dallas to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Dallas (A78) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 27, 2026.

Round-trip from

$127
(Super.com)

One-way from

$49
(Frontier)

Popular in

January

Cheapest in

February

Average price

$269
From Dallas to Ontario
Search Deals
One-way flight from Dallas to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($11 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dallas to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
Use the filters below to find and compare flights from Dallas to Ontario that are best for you.

Fly from

Dallas

Fly to

Ontario

Route

Depart

Return

Price

DallasOntario

DFW - ONT

DFWONT

Dallas/Fort Worth

Sun 3/15

4:43 pm-6:14 pm

Nonstop3h 31m

Ontario

Thu 3/19

2:22 pm-7:27 pm

Nonstop3h 05m

$173

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Tue 2/24

5:20 pm-6:40 pm

Nonstop3h 20m

Ontario

Tue 3/3

11:00 am-3:45 pm

Nonstop2h 45m

$219

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Thu 2/26

12:05 pm-4:45 pm

1 stop6h 40m

Ontario

Sat 2/28

5:35 am-10:20 am

Nonstop2h 45m

$244

DallasOntario

DFW - ONT

DFWONT

Dallas/Fort Worth

Fri 3/6

2:33 pm-11:59 pm

1 stop11h 26m

Ontario

Sun 3/8

7:09 pm-12:05 am

Nonstop2h 56m

$259

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Sat 4/11

4:40 pm-5:50 pm

Nonstop3h 10m

Ontario

Sat 4/18

6:10 am-11:00 am

Nonstop2h 50m

$261

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Wed 2/25

5:20 pm-6:40 pm

Nonstop3h 20m

Ontario

Sat 2/28

5:35 am-10:20 am

Nonstop2h 45m

$262

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Fri 2/27

6:00 am-12:02 pm

1 stop8h 02m

Ontario

Wed 3/4

10:20 pm-9:55 am

1 stop9h 35m

$264

DallasOntario

DFW - ONT

DFWONT

Dallas/Fort Worth

Sat 3/14

4:13 pm-5:44 pm

Nonstop3h 31m

Ontario

Mon 3/23

5:20 pm-10:20 pm

Nonstop3h 00m

$268

DallasOntario

DFW - ONT

DFWONT

Dallas/Fort Worth

Wed 2/11

1:30 pm-11:58 pm

2 stops12h 28m

Ontario

Wed 2/18

1:10 pm-9:11 pm

1 stop6h 01m

$279

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Sat 3/7

2:27 pm-9:05 pm

1 stop8h 38m

Ontario

Wed 3/11

12:57 pm-10:45 pm

1 stop7h 48m

$285

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 38 results
1
2
3
4

Best time to book a flight from Dallas to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Dallas with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Dallas to Ontario. Price data was last updated on January 23, 2026.

The best time to book flights from Dallas to Ontario is 43 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Dallas to Ontario?

Currently, May is the cheapest month in which you can book a flight from Dallas to Ontario (average of $58). Flying from Dallas to Ontario in June is currently the most expensive (average of $92). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DFW to ONT?

Find hourly flight availability from Dallas to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 27, 2026.

When flying from Dallas to Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 34% versus a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from Dallas to Ontario. Price data was last updated on January 24, 2026.

Travelers seeking maximum savings on their Dallas to Ontario flight should consider departing on Thursday at noon when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Dallas to Ontario

Explore weekly flight availability from Dallas to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated January 27, 2026.

The most flights from A78 to ONT are scheduled on a Tuesday (12 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (7 on average).

The best insider tips for Dallas to Ontario flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Dallas to Ontario trip
Our travel experts
Bill Fink

Bill Fink

Expert on ONT

Bill is an award-winning travel writer with extensive credits covering airlines and the aviation industry for publications including AARP, AFAR, The Points Guy and Yahoo. Based in Portland, Oregon, Bill has traveled to more than 75 countries - and been late for his flight in most of them. He once achieved top-level frequent flier status for all of American, Delta and United Airlines during a single year.

Read more
Chris Dong

Chris Dong

Expert on DFW

Chris is a consumer travel reporter covering aviation, trending travel news, hotels, and loyalty programs—all for leading global publications like Travel + Leisure, The Washington Post, AFAR, and more. In addition to writing, Chris is a video host for Travel + Leisure, giving consumers an inside look at the latest in air travel.

Read more
Paul Rubio

Paul Rubio

Expert on DAL

Travel journalist and photographer Paul Rubio is a Miami native (and current resident), who has lived in nine countries and traveled to 137. He is an expert in luxury travel, eco-travel, loyalty programs, hotels, airports and airlines. He is a contributing editor at AFAR, Condé Nast Traveler, LUXURY Magazine, and Palm Beach Illustrated.

Read more

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated January 27, 2026.
Read reviews from past customers who have flown Southwest, Delta, and American Airlines from Dallas to Ontario. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,268 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,268 reviews
Southwest
8.0
Very good
4,268 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
7.9
Good
8,118 reviews
Southwest
8.0
Very good
4,268 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
11,197 reviews
Southwest
8.0
Very good
4,268 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Spirit Airlines
6.3
Okay
8,384 reviews
Southwest
8.0
Very good
4,268 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.7
Fair
3,056 reviews
Southwest
8.0
Very good
4,268 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Dallas to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from Dallas?

    Located just 3.1 mi from the city center, Ontario is the airport most travelers will use when flying to Ontario from Dallas. Booking flights from Dallas to Ontario (ONT) should be relatively easy as there are 9 daily inbound flights from Dallas from 5 different airlines.

  • How long is the flight from Dallas to Ontario?

    A quick flight from Dallas to Ontario can take about 3h 20m. Frontier provides one of the quickest options available for as low as $219. The distance between Dallas and Ontario is about 1196 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Dallas to Ontario round-trip?

    Spirit Airlines, at $52, was found to be the cheapest airline from Dallas to Ontario.Alternate airlines to your destination round-trip include Frontier and Southwest. These flights start at 76% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Dallas to Ontario one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $45. Southwest flights start at $79 while deals on Delta start at $97 one-way.

  • What are the most reliable airlines from Dallas to Ontario?

    The top 3 most reliable airlines when flying from Dallas to Ontario are Volaris (86%), Frontier (82%) and Qatar Airways (73%).

  • What are the cheapest flights from Dallas to Ontario?

    On average you can expect to pay $203 for a flight from Dallas to Ontario. The cheapest flight overall is $44 while the most popular route, (Dallas/Fort Worth - Ontario) is currently priced at $102.

  • Can I find deals for flights from Dallas to Ontario that include hotel bookings?

    Yes. In addition to deals on Dallas to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dallas to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dallas to Ontario.

  • Can I find deals for business class flights from Dallas to Ontario?

    Yes. Cheapflights offers flight deals from Dallas to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Dallas to Ontario?

    Currently, May is the cheapest month in which you can book a flight from Dallas to Ontario (average of $58). Flying from Dallas to Ontario in June is currently the most expensive (average of $92). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dallas to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to Las Vegas flights
Dallas/Fort Worth to San Francisco flights
Dallas/Fort Worth to Los Angeles flights
Hobby to Las Vegas flights
Austin to Las Vegas flights
Hobby to Los Angeles flights
George Bush Intcntl to Las Vegas flights
Dallas/Fort Worth to San Diego flights
George Bush Intcntl to Los Angeles flights
San Antonio to Las Vegas flights
Dallas/Fort Worth to Ontario flights
Dallas/Fort Worth to Santa Ana flights
Love Field to Las Vegas flights
Austin to Los Angeles flights
Hobby to San Francisco flights
Austin to San Francisco flights
Dallas/Fort Worth to San Jose flights
George Bush Intcntl to San Francisco flights
Hobby to Ontario flights
San Antonio to Los Angeles flights
Love Field to Los Angeles flights
Hobby to Santa Ana flights
George Bush Intcntl to Ontario flights
Hobby to San Diego flights
Austin to San Diego flights
George Bush Intcntl to Santa Ana flights
Love Field to San Francisco flights
Dallas/Fort Worth to Burbank flights
George Bush Intcntl to San Diego flights
Dallas/Fort Worth to Sacramento flights
Austin to Ontario flights
Hobby to Burbank flights
Dallas/Fort Worth to Palm Springs flights
Austin to San Jose flights
Dallas/Fort Worth to Reno flights
Hobby to Sacramento flights
George Bush Intcntl to Burbank flights
El Paso to Las Vegas flights
Love Field to San Diego flights
Dallas/Fort Worth to Oakland flights
San Antonio to San Francisco flights
Hobby to San Jose flights
Dallas/Fort Worth to Long Beach flights
Love Field to Ontario flights
George Bush Intcntl to Sacramento flights
San Antonio to San Diego flights
Hobby to Palm Springs flights
Hobby to Reno flights
Austin to Oakland flights
Austin to Santa Ana flights

Top 5 airlines flying from Dallas to Ontario

Discover the top 5 airlines that operate flights from Dallas to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$52Average$153FlexibilityNo cancel feeOn-time65%
FrontierCheapest$58Average$218FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$139Average$337FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$162Average$316FlexibilityNo cancel feeOn-time71%
DeltaCheapest$178Average$281FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.