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$55+ 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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DFW
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to Dallas are usually found in April or March, booked 48 days in advance, depart on a Thursday or Saturday and return on a Thursday

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 November 20, 2025.

This CheapOair deal was found by Cheapflights users on 11/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/56:19 pmONT - DFW
Nonstop3h 03mFrontier
Mon 12/84:10 pmDFW - ONT
Nonstop3h 22mFrontier
Deal found 11/18$125
This CheapOair deal was found by Cheapflights users on 11/19. 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 12/259:48 amONT - DFW
Nonstop2h 59mFrontier
Sun 1/410:47 pmDFW - ONT
1 stop20h 28mFrontier
Deal found 11/19$129
This Frontier deal was found by Cheapflights users on 11/18. 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.
Thu 12/46:15 amONT - DFW
1 stop5h 09mFrontier
Thu 12/45:16 pmDFW - ONT
Nonstop3h 19mFrontier
Deal found 11/18$130
This Kiwi.com deal was found by Cheapflights users on 11/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/912:30 pmONT - DFW
Nonstop3h 05mFrontier
Fri 12/1210:38 pmDFW - ONT
1 stop17h 47mFrontier
Deal found 11/18$131
This CheapOair deal was found by Cheapflights users on 11/19. 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 12/212:30 pmONT - DFW
Nonstop3h 05mFrontier
Tue 12/210:38 pmDFW - ONT
1 stop24h 39mFrontier
Deal found 11/19$132
This Frontier deal was found by Cheapflights users on 11/18. 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 12/212:30 pmONT - DFW
Nonstop3h 05mFrontier
Mon 12/87:00 amDFW - ONT
1 stop9h 25mFrontier
Deal found 11/18$133
This Kiwi.com deal was found by Cheapflights users on 11/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:15 amONT - DFW
1 stop5h 09mFrontier
Sat 12/66:00 amDFW - ONT
1 stop10h 25mFrontier
Deal found 11/19$134
This Kiwi.com deal was found by Cheapflights users on 11/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/42:59 pmONT - DFW
1 stop13h 01mFrontier
Sun 12/147:30 amDFW - ONT
1 stop18h 01mFrontier
Deal found 11/19$135
This Super.com deal was found by Cheapflights users on 11/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/912:30 pmONT - DFW
Nonstop3h 05mFrontier
Mon 12/154:10 pmDFW - ONT
Nonstop3h 22mFrontier
Deal found 11/18$136
This Frontier deal was found by Cheapflights users on 11/18. 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.
Wed 12/246:00 pmONT - DFW
1 stop9h 43mFrontier
Wed 12/312:06 pmDFW - ONT
Nonstop3h 21mFrontier
Deal found 11/18$137
This Kiwi.com deal was found by Cheapflights users on 11/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:15 amONT - DFW
1 stop7h 16mFrontier
Sun 12/147:30 amDFW - ONT
1 stop18h 01mFrontier
Deal found 11/19$138
This Southwest deal was found by Cheapflights users on 11/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:10 amONT - DAL
Nonstop2h 50mSouthwest
Mon 12/156:20 amDAL - ONT
1 stop7h 40mSouthwest
Deal found 11/18$189

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 November 20, 2025.

Round-trip from

$125
(CheapOair)

One-way from

$55
(CheapOair)

Popular in

November

Cheapest in

April

Average price

$295
From Ontario to Dallas
Search Deals
One-way flight from Ontario to Dallas
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 20, 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 - DAL

ONTDAL

Ontario

Mon 12/8

9:55 am-5:00 pm

1 stop5h 05m

Dallas Love Field

Tue 12/9

6:00 pm-7:15 pm

Nonstop3h 15m

$189

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Fri 12/12

10:25 pm-9:05 am

1 stop8h 40m

Dallas/Fort Worth

Sun 12/14

7:50 am-12:34 pm

1 stop6h 44m

$217

OntarioDallas

ONT - DAL

ONTDAL

Ontario

Wed 1/28

10:30 pm-9:41 am

1 stop9h 11m

Dallas Love Field

Wed 2/4

2:17 pm-9:05 pm

1 stop8h 48m

$217

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Mon 12/8

6:40 am-10:04 pm

2 stops13h 24m

Dallas/Fort Worth

Tue 12/9

7:50 am-5:07 pm

2 stops11h 17m

$227

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Tue 1/20

7:30 am-9:16 pm

2 stops11h 46m

Dallas/Fort Worth

Wed 1/21

12:30 pm-10:51 pm

2 stops12h 21m

$227

OntarioDallas

ONT - DAL

ONTDAL

Ontario

Wed 1/7

6:05 am-1:50 pm

2 stops5h 45m

Dallas Love Field

Wed 1/21

5:20 pm-6:40 pm

Nonstop3h 20m

$229

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Mon 1/26

10:30 pm-9:01 am

1 stop8h 31m

Dallas/Fort Worth

Wed 2/4

12:30 pm-4:15 pm

1 stop5h 45m

$243

OntarioDallas

ONT - DAL

ONTDAL

Ontario

Wed 1/7

10:30 pm-9:41 am

1 stop9h 11m

Dallas Love Field

Fri 1/9

2:17 pm-9:05 pm

1 stop8h 48m

$243

OntarioDallas

ONT - DAL

ONTDAL

Ontario

Fri 1/9

12:41 pm-10:29 pm

1 stop7h 48m

Dallas Love Field

Tue 1/13

2:17 pm-9:05 pm

1 stop8h 48m

$243

OntarioDallas

ONT - DAL

ONTDAL

Ontario

Wed 1/7

12:41 pm-10:29 pm

1 stop7h 48m

Dallas Love Field

Thu 1/8

2:17 pm-9:05 pm

1 stop8h 48m

$243

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

Showing 1-10 of 39 results
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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 November 14, 2025.

The best time to book flights from Ontario to Dallas is 48 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 $69). 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 November 20, 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 40% 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 December 16, 2024.

Travelers seeking maximum savings on their Ontario to Dallas flight should consider departing on Monday evenings when fares are most often at their lowest. Sunday 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 November 20, 2025.

The most flights from ONT to A78 are scheduled on a Thursday (20 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (11 on average).

How often are flights from Ontario to Dallas delayed?

About 14% of weekly flights between Ontario and Dallas have experienced delays in the past year, with the average delay time being 145 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 14% of flights being delayed.

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

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 November 20, 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
11,323 reviews

Overall

8.0

Boarding

8.1

Food

7.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

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
11,323 reviews
Alaska Airlines
8.0
Very good
11,323 reviews

Overall

8.0

Boarding

8.1

Food

7.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

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
4,249 reviews
Alaska Airlines
8.0
Very good
11,323 reviews

Overall

8.0

Boarding

8.1

Food

7.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

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
11,045 reviews
Alaska Airlines
8.0
Very good
11,323 reviews

Overall

8.0

Boarding

8.1

Food

7.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

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
8,157 reviews
Alaska Airlines
8.0
Very good
11,323 reviews

Overall

8.0

Boarding

8.1

Food

7.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

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
3,104 reviews
Alaska Airlines
8.0
Very good
11,323 reviews

Overall

8.0

Boarding

8.1

Food

7.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

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 15 outbound flights to Dallas per day.

  • How long is the flight from Ontario to Dallas?

    Airlines like Southwest, Delta, and Frontier fly from Ontario to Dallas in about 5h 05m. The time it takes to get you to your destination can typically vary by up to 4h 57m. 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 $78 on this airline. Additional options worth looking into are Frontier and Delta, starting at $89 and $153 round-trip. These flights start at 66% lower than the current average price 3 months from now.

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

    Consider Iberia (82%), British Airways (81%) or American Airlines (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 $85. On average you can expect to pay $1,001. The most popular route, (Ontario - Dallas/Fort Worth), can usually be booked for $99.

  • 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 $69). 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 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 November 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$78Average$175FlexibilityNo cancel feeOn-time65%
FrontierCheapest$89Average$195FlexibilityNo cancel feeOn-time62%
DeltaCheapest$153Average$472FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$161Average$345FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$183Average$501FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$225Average$267FlexibilityNo cancel feeOn-time75%

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