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$49+ 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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
DFW — ONT
fev 28 — mar 71
sáb 2/28
sáb 3/7
1 adult, Economy
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Find cheap flights from Dallas to Ontario with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Dallas to Ontario are usually found in February or April, booked 43 days in advance, depart on a Thursday or Tuesday and return on a Thursday

Cheap 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 janeiro 29, 2026.

This CheapOair deal was found by Cheapflights users on 1/28. 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.
sex 2/277:15 pm
DFW
-
ONT
Nonstop3h 33m
Frontier
sáb 2/286:00 am
ONT
-
DFW
1 stop15h 29m
Frontier
Deal found 1/28$123
This Booking.com deal was found by Cheapflights users on 1/28. 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.
sex 2/207:15 pm
DFW
-
ONT
Nonstop3h 33m
Frontier
seg 2/236:10 am
ONT
-
DFW
1 stop7h 32m
Frontier
Deal found 1/28$124
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
ter 3/103:15 pm
DFW
-
ONT
1 stop10h 44m
Frontier
ter 3/174:00 pm
ONT
-
DFW
Nonstop3h 05m
Frontier
Deal found 1/28$126
This Super.com deal was found by Cheapflights users on 1/27. 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.
ter 4/72:58 pm
DFW
-
ONT
Nonstop3h 25m
Frontier
seg 4/137:35 pm
ONT
-
DFW
Nonstop3h 05m
Frontier
Deal found 1/27$127
This Frontier deal was found by Cheapflights users on 1/27. 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.
ter 2/2411:55 am
DFW
-
ONT
1 stop11h 39m
Frontier
qua 3/48:40 am
ONT
-
DFW
1 stop11h 58m
Frontier
Deal found 1/27$128
This Gotogate deal was found by Cheapflights users on 1/28. 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.
seg 2/912:55 pm
DFW
-
ONT
Nonstop3h 32m
Frontier
dom 2/152:06 pm
ONT
-
DFW
Nonstop3h 05m
Frontier
Deal found 1/28$129
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
ter 3/247:00 am
DFW
-
ONT
1 stop8h 28m
Frontier
ter 4/75:18 pm
ONT
-
DFW
Nonstop3h 08m
Frontier
Deal found 1/27$130
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
ter 2/105:40 pm
DFW
-
ONT
1 stop22h 12m
Multiple Airlines
sáb 2/148:21 am
ONT
-
DFW
Nonstop3h 04m
Multiple Airlines
Deal found 1/27$131
This Frontier deal was found by Cheapflights users on 1/27. 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.
dom 2/151:00 pm
DFW
-
ONT
Nonstop3h 29m
Frontier
dom 3/12:06 pm
ONT
-
DFW
Nonstop3h 05m
Frontier
Deal found 1/27$133
This Frontier deal was found by Cheapflights users on 1/27. 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.
dom 2/151:00 pm
DFW
-
ONT
Nonstop3h 29m
Frontier
dom 2/222:06 pm
ONT
-
DFW
Nonstop3h 05m
Frontier
Deal found 1/27$134
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
qua 2/2511:55 am
DFW
-
ONT
1 stop11h 39m
Frontier
qui 2/267:22 pm
ONT
-
DFW
1 stop8h 25m
Frontier
Deal found 1/28$135
This Southwest deal was found by Cheapflights users on 1/27. 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.
ter 2/245:20 pm
DAL
-
ONT
Nonstop3h 20m
Southwest
ter 3/311:00 am
ONT
-
DAL
Nonstop2h 45m
Southwest
Deal found 1/27$219

Find 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 janeiro 29, 2026.

Round-trip from

$123
(CheapOair)

One-way from

$49
(Mytrip)

Popular in

January

Cheapest in

February

Average price

$269
From Dallas to Ontario
Search Deals
One-way flight from Dallas to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($11 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 janeiro 29, 2026.
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

DFW - ONT

DFWONT

Dallas/Fort Worth

sáb 2/28

6:00 am-1:54 pm

1 stop9h 54m

Ontario

sáb 2/28

10:20 pm-8:59 am

1 stop8h 39m

$219

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

ter 3/10

12:45 pm-2:00 pm

Nonstop3h 15m

Ontario

ter 3/17

6:00 am-10:50 am

Nonstop2h 50m

$219

DallasOntario

DFW - ONT

DFWONT

Dallas/Fort Worth

ter 2/17

12:30 pm-4:02 pm

1 stop5h 32m

Ontario

ter 2/17

10:20 pm-8:59 am

1 stop8h 39m

$239

DallasOntario

DFW - ONT

DFWONT

Dallas/Fort Worth

ter 3/24

4:10 pm-11:51 pm

2 stops9h 41m

Ontario

ter 4/7

12:57 pm-12:27 am

1 stop9h 30m

$244

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

sáb 2/21

4:05 pm-8:05 pm

1 stop6h 00m

Ontario

sáb 2/28

5:35 am-10:20 am

Nonstop2h 45m

$254

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

sex 2/27

12:05 pm-4:45 pm

1 stop6h 40m

Ontario

sáb 2/28

5:35 am-10:20 am

Nonstop2h 45m

$254

DallasOntario

DFW - ONT

DFWONT

Dallas/Fort Worth

sex 2/27

6:00 am-1:54 pm

1 stop9h 54m

Ontario

ter 3/3

1:10 pm-9:11 pm

1 stop6h 01m

$254

DallasOntario

DFW - ONT

DFWONT

Dallas/Fort Worth

sex 2/27

6:00 am-1:54 pm

1 stop9h 54m

Ontario

sáb 2/28

1:10 pm-9:11 pm

1 stop6h 01m

$254

DallasOntario

DFW - ONT

DFWONT

Dallas/Fort Worth

seg 2/9

12:55 pm-2:27 pm

Nonstop3h 32m

Ontario

qui 2/12

2:06 pm-7:11 pm

Nonstop3h 05m

$259

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

sáb 2/28

2:10 pm-3:30 pm

Nonstop3h 20m

Ontario

seg 3/2

5:50 am-3:00 pm

2 stops7h 10m

$259

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 40 results
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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 January 23, 2026.

The best time to book flights from Dallas to Ontario is 43 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, May is the cheapest month in which you can book a flight from Dallas to Ontario (average of $58). Flying from Dallas to Ontario in June is currently the most expensive (average of $92). 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 janeiro 29, 2026.

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 34% versus a flight in the morning.

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 January 24, 2026.

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. Saturday 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 janeiro 29, 2026.

The most flights from A78 to ONT are scheduled on a Monday (11 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (7 on average).

The best insider tips for Dallas to Ontario 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 Dallas to Ontario 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 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 janeiro 29, 2026.
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
4,267 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Overall

8.0

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
4,267 reviews
Southwest
8.0
Very good
4,267 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Overall

8.0

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
7.9
Good
8,128 reviews
Southwest
8.0
Very good
4,267 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Overall

8.0

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
11,205 reviews
Southwest
8.0
Very good
4,267 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Overall

8.0

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
8,394 reviews
Southwest
8.0
Very good
4,267 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Overall

8.0

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
5.7
Fair
3,056 reviews
Southwest
8.0
Very good
4,267 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Overall

8.0

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 8 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 3h 20m. Delta provides one of the quickest options available for as low as $259. 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?

    Spirit Airlines, at $52, was found to be the cheapest airline from Dallas to Ontario.Alternate airlines to your destination round-trip include Frontier and Southwest. These flights start at 76% lower than the current average price 3 months from now.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $45. Southwest flights start at $79 while deals on Delta start at $97 one-way.

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

    The top 3 most reliable airlines when flying from Dallas to Ontario are Volaris (86%), Frontier (82%) and Qatar Airways (73%).

  • What are the cheapest flights from Dallas to Ontario?

    On average you can expect to pay $203 for a flight from Dallas to Ontario. The cheapest flight overall is $44 while the most popular route, (Dallas/Fort Worth - Ontario) is currently priced at $98.

  • 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, May is the cheapest month in which you can book a flight from Dallas to Ontario (average of $58). Flying from Dallas to Ontario in June is currently the most expensive (average of $92). 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 janeiro 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$52Average$153FlexibilityNo cancel feeOn-time65%
FrontierCheapest$58Average$218FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$139Average$337FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$162Average$316FlexibilityNo cancel feeOn-time71%
DeltaCheapest$178Average$281FlexibilityNo cancel feeOn-timeN/A

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