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Ontario

$56+ 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 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
DFW — ONT
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheapflights Tip: The best prices from Dallas to Ontario are usually found in February or April, booked 85 days in advance, depart on a Thursday or Friday and return on a Thursday

Cheap 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 September 15, 2025.

Round-trip from

$99
(SmartFares)

One-way from

$56
(Mytrip)

Popular in

January

Cheapest in

February

Average price

$179
From Dallas to Ontario
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One-way flight from Dallas to Ontario
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Highest demand for flights based on searches. 6% potential increase in price ($16 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 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 September 15, 2025.

This SmartFares deal was found by Cheapflights users on 9/14. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/95:10 amDFW - ONT
Nonstop3h 12mFrontier
Fri 11/148:24 amONT - DFW
Nonstop3h 07mFrontier
Deal found 9/14$99
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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 10/232:19 pmDFW - ONT
Nonstop3h 13mFrontier
Sat 10/258:34 amONT - DFW
Nonstop3h 07mFrontier
Deal found 9/13$102
This Frontier deal was found by Cheapflights users on 9/13. 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 9/252:16 pmDFW - ONT
Nonstop3h 13mFrontier
Mon 9/2912:13 pmONT - DFW
Nonstop3h 14mFrontier
Deal found 9/13$103
This Priceline deal was found by Cheapflights users on 9/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/610:10 amDFW - ONT
Nonstop3h 18mFrontier
Sat 10/118:34 amONT - DFW
Nonstop3h 07mFrontier
Deal found 9/14$104
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 10/310:10 amDFW - ONT
Nonstop3h 18mFrontier
Fri 10/310:28 pmONT - DFW
1 stop5h 17mFrontier
Deal found 9/14$110
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 10/316:15 amDFW - ONT
Nonstop3h 14mFrontier
Mon 11/38:24 amONT - DFW
Nonstop3h 07mFrontier
Deal found 9/14$113
This CheapOair deal was found by Cheapflights users on 9/13. 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 10/186:35 amDFW - ONT
Nonstop3h 14mFrontier
Sun 11/24:17 pmONT - DFW
Nonstop3h 15mFrontier
Deal found 9/13$114
This Frontier deal was found by Cheapflights users on 9/13. 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 10/152:22 pmDFW - ONT
1 stop11h 28mFrontier
Thu 10/164:17 pmONT - DFW
Nonstop3h 15mFrontier
Deal found 9/13$116
This Frontier deal was found by Cheapflights users on 9/13. 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 10/165:10 amDFW - ONT
1 stop6h 25mFrontier
Thu 10/164:17 pmONT - DFW
Nonstop3h 15mFrontier
Deal found 9/13$118
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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.
Sat 11/87:45 amDFW - ONT
1 stop5h 25mFrontier
Sun 11/97:17 amONT - DFW
Nonstop3h 14mFrontier
Deal found 9/14$119
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 10/316:15 amDFW - ONT
Nonstop3h 14mFrontier
Sun 11/24:17 pmONT - DFW
Nonstop3h 15mFrontier
Deal found 9/14$123
This Southwest deal was found by Cheapflights users on 9/12. 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 10/241:30 pmDAL - ONT
1 stop5h 45mSouthwest
Mon 10/274:20 pmONT - DAL
1 stop5h 10mSouthwest
Deal found 9/12$166

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 September 15, 2025.
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

DAL - ONT

DALONT

Dallas Love Field

Fri 10/24

1:30 pm-5:15 pm

1 stop5h 45m

Ontario

Mon 10/27

4:20 pm-11:30 pm

1 stop5h 10m

$166

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Thu 10/30

1:30 pm-5:15 pm

1 stop5h 45m

Ontario

Sat 11/1

1:30 pm-8:40 pm

1 stop5h 10m

$179

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Wed 10/15

6:15 pm-7:20 pm

Nonstop3h 05m

Ontario

Wed 10/22

11:25 am-4:25 pm

Nonstop3h 00m

$204

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Fri 10/17

6:45 pm-7:50 pm

Nonstop3h 05m

Ontario

Sat 10/25

6:25 am-11:20 am

Nonstop2h 55m

$204

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Tue 10/7

6:15 pm-7:20 pm

Nonstop3h 05m

Ontario

Tue 10/14

11:25 am-4:25 pm

Nonstop3h 00m

$214

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Thu 10/23

6:45 pm-7:50 pm

Nonstop3h 05m

Ontario

Sat 10/25

6:25 am-11:20 am

Nonstop2h 55m

$234

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Thu 10/2

6:45 pm-7:50 pm

Nonstop3h 05m

Ontario

Sun 10/5

6:00 am-2:50 pm

1 stop6h 50m

$234

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Sat 10/18

9:50 am-4:10 pm

1 stop8h 20m

Ontario

Sun 10/19

6:00 am-2:50 pm

1 stop6h 50m

$234

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Thu 10/16

11:30 am-2:55 pm

1 stop5h 25m

Ontario

Sat 10/25

6:25 am-11:20 am

Nonstop2h 55m

$236

DallasOntario

DFW - ONT

DFWONT

Dallas/Fort Worth

Wed 10/15

4:20 pm-10:41 pm

1 stop8h 21m

Ontario

Fri 10/17

10:00 pm-10:18 am

1 stop10h 18m

$237

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 37 results
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The best insider tips for Dallas to Ontario 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 Dallas to Ontario trip
Airports
DFW

DFW's Skylink Train connects all terminals efficiently, running every two minutes, perfect for quick terminal transfers.

Read more about DFWby Chris Dong
DAL

DAL offers a streamlined experience with quick security lines and a straightforward layout, ideal for domestic travelers.

Read more about DALby Paul Rubio
ONT

ONT's rental car center offers quick access to I-10, ideal for road trips to Palm Springs or Big Bear.

Read more about ONTby Bill Fink
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 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 September 12, 2025.

The best time to book flights from Dallas to Ontario is 85 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, August is the cheapest month in which you can book a flight from Dallas to Ontario (average of $246). Flying from Dallas to Ontario in March is currently the most expensive (average of $328). 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 September 15, 2025.

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 13% versus a flight in the evening.

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 December 16, 2024.

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. Sunday 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 September 15, 2025.

The most flights from A78 to ONT are scheduled on a Thursday (15 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (10 on average).

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 September 15, 2025.
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
4,242 reviews

Comfort

8.0

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

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
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

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
8.0
Very good
7,954 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

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
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

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
8,015 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

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
5.8
Fair
3,172 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

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 12 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 5h 45m. Southwest provides one of the quickest options available for as low as $166. 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?

    Frontier, at $58, was found to be the cheapest airline from Dallas to Ontario.Alternate airlines to your destination round-trip include Spirit Airlines and Southwest. These flights start at 73% lower than the current average price 3 months from now.

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

    The top 3 most reliable airlines when flying from Dallas to Ontario are Frontier (68%), American Airlines (49%) and Qatar Airways (46%).

  • What are the cheapest flights from Dallas to Ontario?

    On average you can expect to pay $159 for a flight from Dallas to Ontario. The cheapest flight overall is $50 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, August is the cheapest month in which you can book a flight from Dallas to Ontario (average of $246). Flying from Dallas to Ontario in March is currently the most expensive (average of $328). 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 Dallas to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$191FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$64Average$148FlexibilityNo cancel feeOn-time65%
SouthwestCheapest$139Average$340FlexibilityNo cancel feeOn-time63%
DeltaCheapest$157Average$281FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$175Average$327FlexibilityNo cancel feeOn-time71%

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