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$74+ 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 10/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DFW
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to Dallas are usually found in April or March, booked 35 days in advance, depart on a Thursday 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 September 11, 2025.

Round-trip from

$125
(Cheapflightsfares)

One-way from

$74
(Southwest)

Popular in

November

Cheapest in

April

Average price

$199
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. 8% potential increase in price ($23 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 September 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 September 11, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/212:18 pmONT - DFW
Nonstop3h 14mFrontier
Mon 10/610:10 amDFW - ONT
Nonstop3h 18mFrontier
Deal found 9/11$125
This Frontier deal was found by Cheapflights users on 9/11. 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 10/24:34 pmONT - DFW
Nonstop3h 12mFrontier
Thu 10/96:35 amDFW - ONT
Nonstop3h 14mFrontier
Deal found 9/11$126
This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/94:17 pmONT - DFW
Nonstop3h 15mFrontier
Thu 11/139:17 amDFW - ONT
Nonstop3h 17mFrontier
Deal found 9/11$129
This CheapOair deal was found by Cheapflights users on 9/10. 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.
Thu 10/910:40 pmONT - DFW
1 stop22h 05mFrontier
Mon 10/136:35 amDFW - ONT
Nonstop3h 14mFrontier
Deal found 9/10$131
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/57:15 pmONT - DFW
Nonstop3h 10mFrontier
Sun 11/22:00 pmDFW - ONT
Nonstop3h 13mFrontier
Deal found 9/10$132
This Frontier deal was found by Cheapflights users on 9/10. 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 10/57:15 pmONT - DFW
Nonstop3h 10mFrontier
Sun 10/126:35 amDFW - ONT
Nonstop3h 14mFrontier
Deal found 9/10$133
This CheapOair deal was found by Cheapflights users on 9/10. 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.
Sat 10/118:34 amONT - DFW
Nonstop3h 07mFrontier
Tue 10/147:35 amDFW - ONT
1 stop18h 15mFrontier
Deal found 9/10$134
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/78:24 amONT - DFW
Nonstop3h 07mFrontier
Mon 11/176:15 amDFW - ONT
Nonstop3h 14mFrontier
Deal found 9/10$136
This CheapOair deal was found by Cheapflights users on 9/10. 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.
Sat 10/188:34 amONT - DFW
Nonstop3h 07mFrontier
Mon 10/209:36 pmDFW - ONT
1 stop28h 14mFrontier
Deal found 9/10$138
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/189:46 pmONT - DFW
1 stop5h 54mFrontier
Fri 9/1910:10 amDFW - ONT
Nonstop3h 18mFrontier
Deal found 9/10$139
This CheapOair deal was found by Cheapflights users on 9/11. 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.
Fri 10/248:34 amONT - DFW
Nonstop3h 07mFrontier
Sun 10/266:35 amDFW - ONT
Nonstop3h 14mFrontier
Deal found 9/11$140
This Southwest deal was found by Cheapflights users on 9/11. 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.
Wed 10/2211:25 amONT - DAL
Nonstop3h 00mSouthwest
Fri 10/246:45 pmDAL - ONT
Nonstop3h 05mSouthwest
Deal found 9/11$159

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 September 11, 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

Thu 10/9

8:34 am-1:41 pm

Nonstop3h 07m

Dallas/Fort Worth

Sat 10/11

2:22 pm-11:50 pm

1 stop11h 28m

$134

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Fri 10/24

11:53 am-11:09 am

1 stop21h 16m

Dallas/Fort Worth

Sun 10/26

6:35 am-7:49 am

Nonstop3h 14m

$146

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Thu 9/25

9:46 pm-5:40 am

1 stop5h 54m

Dallas/Fort Worth

Sat 9/27

2:22 pm-7:54 pm

1 stop7h 32m

$161

OntarioDallas

ONT - DAL

ONTDAL

Ontario

Fri 10/24

4:20 pm-11:30 pm

1 stop5h 10m

Dallas Love Field

Fri 10/31

11:05 am-12:10 pm

Nonstop3h 05m

$163

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Fri 9/26

8:59 pm-10:38 am

1 stop11h 39m

Dallas/Fort Worth

Tue 10/14

2:22 pm-11:50 pm

1 stop11h 28m

$165

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Thu 9/25

12:18 pm-5:32 pm

Nonstop3h 14m

Dallas/Fort Worth

Mon 10/13

6:35 am-7:49 am

Nonstop3h 14m

$181

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Thu 9/25

12:18 pm-5:32 pm

Nonstop3h 14m

Dallas/Fort Worth

Sun 9/28

5:03 pm-6:15 pm

Nonstop3h 12m

$192

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Tue 10/7

7:04 am-9:15 pm

2 stops12h 11m

Dallas/Fort Worth

Wed 10/8

2:22 pm-11:50 pm

1 stop11h 28m

$197

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Thu 9/25

7:30 pm-5:45 am

1 stop8h 15m

Dallas/Fort Worth

Wed 10/15

8:00 am-8:42 pm

1 stop14h 42m

$209

OntarioDallas

ONT - DAL

ONTDAL

Ontario

Wed 10/8

11:25 am-4:25 pm

Nonstop3h 00m

Dallas Love Field

Wed 10/15

7:45 am-10:35 am

1 stop4h 50m

$213

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 42 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 August 29, 2025.

The best time to book flights from Ontario to Dallas is 35 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 September 11, 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 45% 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 September 11, 2025.

The most flights from ONT to A78 are scheduled on a Thursday (20 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (15 on average).

How much does it cost to fly round-trip from Ontario to Dallas?

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 September 11, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and American 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Southwest
8.0
Very good
4,248 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Spirit Airlines
6.3
Okay
8,023 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Frontier
5.8
Fair
3,177 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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 16 outbound flights to Dallas per day.

  • How long is the flight from Ontario to Dallas?

    Airlines like Frontier and Southwest fly from Ontario to Dallas in about 3h 07m. The time it takes to get you to your destination can typically vary by up to 2h 03m. Airlines will cover a distance of 1185 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 $83 on this airline. Additional options worth looking into are Frontier and American Airlines, starting at $85 and $181 round-trip. These flights start at 64% lower than the current average price 3 months from now.

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

    $75 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on American Airlines and Southwest, with prices starting from $80 and $80, respectively.

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

    Consider Frontier (77%), Iberia (68%) or American Airlines (65%) 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 $87. On average you can expect to pay $817. The most popular route, (Ontario - Dallas/Fort Worth), can usually be booked for $103.

  • 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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See prices for flight routes from nearby airports that may be better suited for you.
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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$83Average$175FlexibilityNo cancel feeOn-time65%
FrontierCheapest$85Average$190FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$181Average$514FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$186Average$355FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$225Average$258FlexibilityNo cancel feeOn-time75%
DeltaCheapest$297Average$472FlexibilityNo cancel feeOn-timeN/A

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