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$72+ 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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DFW
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to Dallas are usually found in April or August, booked 81 days in advance, depart on a Tuesday or Saturday and return on a Thursday

Cheap 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 July 31, 2025.

Round-trip from

$140
(Frontier)

One-way from

$72
(Frontier)

Popular in

November

Cheapest in

April

Average price

$243
From Ontario to Dallas
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One-way flight from Ontario to Dallas
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Highest demand for flights based on searches. 10% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 July 31, 2025.

This Frontier deal was found by Cheapflights users on 7/31. 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.
Fri 9/512:13 pmONT - DFW
Nonstop3h 14mFrontier
Mon 9/810:10 amDFW - ONT
Nonstop3h 18mFrontier
Deal found 7/31$140
This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/272:57 pmONT - DFW
Nonstop3h 03mAmerican Airlines
Wed 9/38:53 amDFW - ONT
Nonstop3h 10mAmerican Airlines
Deal found 7/30$149
This Southwest deal was found by Cheapflights users on 7/30. 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.
Fri 9/56:20 amONT - DAL
1 stop7h 20mSouthwest
Sun 9/79:05 amDAL - ONT
Nonstop3h 05mSouthwest
Deal found 7/30$149
This Delta deal was found by Cheapflights users on 7/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/211:45 amONT - DAL
1 stop10h 04mDelta
Tue 9/163:52 pmDAL - ONT
1 stop8h 31mDelta
Deal found 7/31$237

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 July 31, 2025.
Use the filters below to find and compare flights from Ontario to Dallas that are best for you.

Fly from

Ontario

Fly to

Dallas

Route

Depart

Return

Price

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Fri 9/5

12:13 pm-5:27 pm

Nonstop3h 14m

Dallas/Fort Worth

Mon 9/8

10:10 am-11:28 am

Nonstop3h 18m

$140

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Fri 9/5

12:45 pm-5:49 pm

Nonstop3h 04m

Dallas/Fort Worth

Sat 9/6

10:35 am-11:57 am

Nonstop3h 22m

$149

OntarioDallas

ONT - DAL

ONTDAL

Ontario

Fri 9/5

6:20 am-3:40 pm

1 stop7h 20m

Dallas Love Field

Sun 9/7

9:05 am-10:10 am

Nonstop3h 05m

$149

OntarioDallas

ONT - DAL

ONTDAL

Ontario

Tue 9/2

11:45 am-11:49 pm

1 stop10h 04m

Dallas Love Field

Tue 9/16

3:52 pm-10:23 pm

1 stop8h 31m

$237

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Thu 8/21

12:04 pm-5:20 pm

Nonstop3h 16m

$72

OntarioDallas

ONT - DAL

ONTDAL

Ontario

Thu 10/30

4:20 pm-11:30 pm

1 stop5h 10m

$79

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Tue 8/19

11:59 pm-5:00 am

Nonstop3h 01m

$80

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Tue 10/7

6:00 am-3:55 pm

1 stop7h 55m

$92

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Mon 11/3

6:00 am-3:49 pm

1 stop7h 49m

$94

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Wed 8/13

7:00 am-6:31 pm

1 stop9h 31m

$116

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 12 results
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The best insider tips for Ontario to Dallas flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Ontario to Dallas trip
Airports
ONT

ONT offers quick security checks at both terminals, making it a convenient choice for business travelers avoiding LAX's long lines.

Read more about ONTby Bill Fink
DFW

DFW offers easy terminal connections via Skylink, making navigation smooth for arriving passengers.

Read more about DFWby Chris Dong
DAL

DAL's proximity to downtown makes it a convenient choice, with rideshares and public transit options readily available.

Read more about DALby Paul Rubio
Our travel experts
Bill Fink

Bill Fink

Expert on ONT

Bill Fink

Bill Fink

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 Dong

Chris Dong

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

Paul Rubio

Paul Rubio

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

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 July 25, 2025.

The best time to book flights from Ontario to Dallas is 81 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, August is the cheapest month in which you can book a flight from Ontario to Dallas (average of $216). Flying from Ontario to Dallas in March is currently the most expensive (average of $295). 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 July 31, 2025.

A simple way to save on the total cost of your ticket is to fly from Ontario to Dallas in the afternoon. If you’re flexible enough to do this you can expect to save up to 42% on your trip compared to booking a flight in the morning.

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 December 16, 2024.

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 mornings 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 July 31, 2025.

The most flights from ONT to A78 are scheduled on a Thursday (19 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (12 on average).

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 July 31, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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. 6 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.

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

    Our cheapest airline available from Ontario to Dallas is Frontier. Our recent data shows that you can find tickets from as low as $140 on this airline. Additional options worth looking into are American Airlines and Southwest, starting at $149 and $149 round-trip. These flights start at 39% lower than the current average price 3 months from now.

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

    $72 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 $79 and $80, respectively.

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

    Consider Frontier (77%), Qatar Airways (73%) or American Airlines (71%) 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 $88. On average you can expect to pay $977. The most popular route, (Ontario - Dallas/Fort Worth), can usually be booked for $92.

  • 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, August is the cheapest month in which you can book a flight from Ontario to Dallas (average of $216). Flying from Ontario to Dallas in March is currently the most expensive (average of $295). 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

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Top 6 airlines flying from Ontario to Dallas

Discover the top 6 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$80Average$189FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$83Average$171FlexibilityNo cancel feeOn-time65%
DeltaCheapest$173Average$472FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$183Average$437FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$185Average$353FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$225Average$258FlexibilityNo cancel feeOn-time75%

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