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$82+ Cheap flights from Ontario (ONT) to Dallas

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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DFW
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to Dallas are usually found in April or August, booked 86 days in advance, depart on a Thursday or Saturday and return on a Thursday

Cheap flight deals from Ontario to Dallas

Cheapest flights from Ontario to Dallas
Explore the most affordable flight options available from Ontario to Dallas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 23, 2026.

This Gotogate deal was found by Cheapflights users on 3/22. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1712:59 am
ONT
-
DFW
1 stop8h 10m
Frontier
Mon 4/2010:45 pm
DFW
-
ONT
1 stop13h 59m
Frontier
Deal found 3/22$167
This Expedia deal was found by Cheapflights users on 3/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/810:03 pm
ONT
-
DFW
1 stop5h 47m
Frontier
Tue 4/144:15 pm
DFW
-
ONT
1 stop9h 40m
Frontier
Deal found 3/20$170
This CheapOair deal was found by Cheapflights users on 3/22. 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.
Wed 4/2912:59 am
ONT
-
DFW
1 stop21h 13m
Frontier
Tue 5/52:44 pm
DFW
-
ONT
1 stop11h 05m
Frontier
Deal found 3/22$171
This Gotogate deal was found by Cheapflights users on 3/21. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1312:59 am
ONT
-
DFW
1 stop16h 56m
Frontier
Sun 4/193:54 pm
DFW
-
ONT
1 stop20h 20m
Frontier
Deal found 3/21$172
This Trip.com deal was found by Cheapflights users on 3/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/139:02 pm
ONT
-
DFW
1 stop6h 48m
Frontier
Thu 4/163:00 pm
DFW
-
ONT
1 stop21h 49m
Frontier
Deal found 3/20$174
This Frontier deal was found by Cheapflights users on 3/18. 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.
Tue 4/76:20 am
ONT
-
DFW
1 stop11h 33m
Frontier
Tue 4/144:15 pm
DFW
-
ONT
1 stop9h 40m
Frontier
Deal found 3/18$180
This CheapOair deal was found by Cheapflights users on 3/20. 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 4/79:26 pm
ONT
-
DFW
1 stop6h 24m
Frontier
Mon 4/1310:34 pm
DFW
-
ONT
1 stop27h 21m
Frontier
Deal found 3/20$181
This Booking.com deal was found by Cheapflights users on 3/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:20 am
ONT
-
DFW
1 stop15h 52m
Frontier
Mon 4/135:38 pm
DFW
-
ONT
1 stop27h 11m
Frontier
Deal found 3/21$182
This Frontier deal was found by Cheapflights users on 3/20. 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 4/1512:59 am
ONT
-
DFW
1 stop8h 10m
Frontier
Sat 4/254:15 pm
DFW
-
ONT
1 stop9h 40m
Frontier
Deal found 3/20$185
This Booking.com deal was found by Cheapflights users on 3/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/19:00 am
ONT
-
DFW
1 stop10h 34m
Frontier
Sun 5/310:45 pm
DFW
-
ONT
1 stop11h 19m
Frontier
Deal found 3/21$187
This Southwest deal was found by Cheapflights users on 3/23. 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.
Mon 4/271:55 pm
ONT
-
DAL
1 stop6h 40m
Southwest
Wed 4/296:05 am
DAL
-
ONT
1 stop7h 30m
Southwest
Deal found 3/23$292
This Southwest deal was found by Cheapflights users on 3/22. 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.
Sat 5/26:10 am
ONT
-
DAL
Nonstop2h 50m
Southwest
Sat 5/94:25 pm
DAL
-
ONT
1 stop6h 55m
Southwest
Deal found 3/22$296

Find flight deals from Ontario to Dallas

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Dallas (A78). 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 March 23, 2026.

Round-trip from

$167
(Gotogate)

One-way from

$82
(Trip.com)

Popular in

November

Cheapest in

April

Average price

$272
From Ontario to Dallas
Search Deals
One-way flight from Ontario to Dallas
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($8 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Dallas 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 March 23, 2026.
Use the filters below to find and compare flights from Ontario to Dallas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Wed 4/29

12:59 am-12:12 am

1 stop21h 13m

Dallas/Fort Worth

Tue 5/5

5:46 pm-7:11 pm

Nonstop3h 25m

$210

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Fri 6/12

6:47 pm-11:59 pm

Nonstop3h 12m

Dallas/Fort Worth

Mon 6/15

6:55 pm-11:49 pm

1 stop6h 54m

$328

OntarioDallas

ONT - DAL

ONTDAL

Ontario

Mon 4/13

1:50 pm-9:45 pm

1 stop5h 55m

Dallas Love Field

Tue 4/28

12:20 pm-1:30 pm

Nonstop3h 10m

$395
Quickest round-trip

OntarioDallas

ONT - DAL

ONTDAL

Ontario

Sat 5/16

6:10 am-11:00 am

Nonstop2h 50m

Dallas Love Field

Sun 6/7

1:00 pm-2:00 pm

Nonstop3h 00m

$398

OntarioDallas

ONT - DAL

ONTDAL

Ontario

Thu 4/9

11:35 am-4:25 pm

Nonstop2h 50m

Dallas Love Field

Mon 4/13

7:35 pm-8:45 pm

Nonstop3h 10m

$399

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Wed 5/20

9:50 am-10:31 pm

2 stops10h 41m

Dallas/Fort Worth

Tue 5/26

4:25 pm-11:34 pm

2 stops9h 09m

$401

OntarioDallas

ONT - DAL

ONTDAL

Ontario

Thu 5/7

12:08 pm-11:56 pm

1 stop9h 48m

Dallas Love Field

Sat 5/9

2:55 pm-9:48 pm

1 stop8h 53m

$407

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Sat 4/18

6:00 am-1:52 pm

1 stop5h 52m

Dallas/Fort Worth

Wed 4/22

7:20 am-4:25 pm

2 stops11h 05m

$410

OntarioDallas

ONT - DAL

ONTDAL

Ontario

Wed 4/22

8:05 am-12:55 pm

Nonstop2h 50m

Dallas Love Field

Sun 4/26

8:00 am-9:10 am

Nonstop3h 10m

$414

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Sat 7/25

10:59 pm-8:42 am

1 stop7h 43m

Dallas/Fort Worth

Sun 8/2

9:40 am-6:15 pm

1 stop10h 35m

$418

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Showing 1-10 of 43 resultsSorted by cheapest first
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Best time to book a flight from Ontario to Dallas

Have a flexible travel schedule? Discover the best time to fly to Dallas from Ontario 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 Ontario to Dallas

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

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Dallas. Price data was last updated on March 13, 2026.

The best time to book flights from Ontario to Dallas is 86 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 Ontario to Dallas?

Currently, April is the cheapest month in which you can book a flight from Ontario to Dallas (average of $78). Flying from Ontario to Dallas in July is currently the most expensive (average of $109). 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 ONT to DFW?

Find hourly flight availability from Ontario to Dallas. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 23, 2026.

A simple way to save on the total cost of your ticket is to fly from Ontario to Dallas in the evening. If you’re flexible enough to do this you can expect to save up to 13% on your trip compared to booking a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Ontario to Dallas. Price data was last updated on March 14, 2026.

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

Weekly flight availability from Ontario to Dallas

Explore weekly flight availability from Ontario to Dallas. 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 March 23, 2026.

The most flights from ONT to A78 are scheduled on a Saturday (18 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (12 on average).

How often are flights from Ontario to Dallas delayed?

About 13% of weekly flights between Ontario and Dallas have experienced delays in the past year, with the average delay time being 141 minutes.

What is the most punctual flight time for Ontario to Dallas flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Friday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Ontario to Dallas flights?

Over the last year, American Airlines have had the lowest number of delays on this route, with just 13% of flights being delayed.

The best insider tips for Ontario to Dallas 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 Ontario to Dallas 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 Dallas

Get insights into the airlines that provide service to Dallas. 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 Dallas. Reviews last updated March 23, 2026.
Read reviews from past customers who have flown Southwest,Alaska Airlines, andAmerican Airlines from Ontario to Dallas. 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
4,324 reviews

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Southwest
8.0
Very good
4,324 reviews
Southwest
8.0
Very good
4,324 reviews

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Alaska Airlines
7.9
Good
12,098 reviews
Southwest
8.0
Very good
4,324 reviews

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
American Airlines
7.1
Good
11,488 reviews
Southwest
8.0
Very good
4,324 reviews

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Spirit Airlines
6.3
Okay
8,538 reviews
Southwest
8.0
Very good
4,324 reviews

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Frontier
5.7
Fair
3,019 reviews
Southwest
8.0
Very good
4,324 reviews

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Dallas. 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 from for flights from Ontario to Dallas?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Dallas. 5 airlines have flights from Ontario to Dallas on a regular basis. Booking flights from Ontario to Dallas should not be difficult; the airport handles an average of 15 outbound flights to Dallas per day.

  • How long is the flight from Ontario to Dallas?

    Airlines like Frontier, Southwest, and Delta fly from Ontario to Dallas in about 5h 55m. The time it takes to get you to your destination can typically vary by up to 15h 18m. Airlines will cover a distance of 1196 mi. This flight may include one or multiple stops.

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

    Our cheapest airline available from Ontario to Dallas is Spirit Airlines. Our recent data shows that you can find tickets from as low as $65 on this airline. Additional options worth looking into are Frontier and Southwest, starting at $93 and $159 round-trip. These flights start at 74% lower than the current average price 3 months from now.

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

    $47 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Southwest and American Airlines, with prices starting from $89 and $89, respectively.

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

    Consider Iberia (83%), American Airlines (81%) or Qatar Airways (80%) when booking your flight. These represent the most reliable airlines when flying from Ontario to Dallas.

  • What are the cheapest flights from Ontario to Dallas?

    The cheapest flight price from Ontario to Dallas is $101. On average you can expect to pay $973. The most popular route, (Ontario - Dallas/Fort Worth), can usually be booked for $160.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Dallas 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 Ontario to Dallas?

    Currently, April is the cheapest month in which you can book a flight from Ontario to Dallas (average of $78). Flying from Ontario to Dallas in July is currently the most expensive (average of $109). 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

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Alternative routes for Ontario to Dallas

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Ontario to Dallas

Discover the top 5 airlines that operate flights from Ontario to Dallas. 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 March 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$65Average$129FlexibilityNo cancel feeOn-time65%
FrontierCheapest$93Average$209FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$159Average$338FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$184Average$402FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$225Average$280FlexibilityNo cancel feeOn-time75%

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