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$58+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
DFW — ONT
Mar 26 — Apr 21
Thu 3/26
Thu 4/2
1 adult, Economy
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Cheapflights Tip: The best prices from Dallas to Ontario are usually found in April or September, booked 85 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 February 24, 2026.

This Expedia deal was found by Cheapflights users on 2/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/112:48 pm
DFW
-
ONT
Nonstop3h 27m
Frontier
Wed 3/2510:03 pm
ONT
-
DFW
1 stop5h 44m
Frontier
Deal found 2/20$136
This Kiwi.com deal was found by Cheapflights users on 2/20. 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 4/147:09 pm
DFW
-
ONT
Nonstop3h 30m
Frontier
Wed 4/158:15 am
ONT
-
DFW
Nonstop3h 15m
Frontier
Deal found 2/20$137
This Frontier deal was found by Cheapflights users on 2/23. 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 4/157:09 pm
DFW
-
ONT
Nonstop3h 30m
Frontier
Sat 5/98:00 am
ONT
-
DFW
Nonstop3h 15m
Frontier
Deal found 2/23$138
This Kiwi.com deal was found by Cheapflights users on 2/20. 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 4/75:20 pm
DFW
-
ONT
1 stop8h 36m
Frontier
Mon 4/1312:59 am
ONT
-
DFW
1 stop11h 48m
Frontier
Deal found 2/20$140
This Expedia deal was found by Cheapflights users on 2/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/810:30 pm
DFW
-
ONT
1 stop11h 34m
Frontier
Sat 4/117:40 pm
ONT
-
DFW
Nonstop3h 05m
Frontier
Deal found 2/23$141
This Mytrip deal was found by Cheapflights users on 2/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/75:20 pm
DFW
-
ONT
1 stop8h 36m
Frontier
Sat 4/117:40 pm
ONT
-
DFW
Nonstop3h 05m
Frontier
Deal found 2/21$142
This Expedia deal was found by Cheapflights users on 2/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/243:15 pm
DFW
-
ONT
1 stop10h 44m
Frontier
Tue 3/312:23 pm
ONT
-
DFW
1 stop13h 27m
Frontier
Deal found 2/23$144
This Trip.com deal was found by Cheapflights users on 2/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/92:48 pm
DFW
-
ONT
Nonstop3h 27m
Frontier
Tue 3/106:15 am
ONT
-
DFW
1 stop7h 47m
Frontier
Deal found 2/23$146
This Kiwi.com deal was found by Cheapflights users on 2/21. 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.
Wed 3/410:31 pm
DFW
-
ONT
1 stop16h 40m
Frontier
Sat 3/76:34 pm
ONT
-
DFW
Nonstop2h 55m
Frontier
Deal found 2/21$147
This Kiwi.com deal was found by Cheapflights users on 2/23. 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.
Wed 3/45:35 pm
DFW
-
ONT
1 stop21h 36m
Multiple Airlines
Mon 3/95:10 pm
ONT
-
DFW
Nonstop3h 00m
Multiple Airlines
Deal found 2/23$149
This Mytrip deal was found by Cheapflights users on 2/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1810:41 pm
DFW
-
ONT
1 stop16h 30m
Frontier
Wed 3/256:15 am
ONT
-
DFW
1 stop7h 47m
Frontier
Deal found 2/20$150
This Super.com deal was found by Cheapflights users on 2/23. 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.
Mon 3/21:01 pm
DFW
-
ONT
Nonstop3h 29m
Frontier
Thu 3/52:06 pm
ONT
-
DFW
Nonstop3h 05m
Frontier
Deal found 2/23$151

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 February 24, 2026.

Round-trip from

$136
(Expedia)

One-way from

$58
(Kiwi.com)

Popular in

November

Cheapest in

April

Average price

$208
From Dallas to Ontario
Search Deals
One-way flight from Dallas to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 24, 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

Fri 3/20

4:10 pm-11:51 pm

2 stops9h 41m

Ontario

Tue 3/24

11:59 am-11:55 pm

1 stop9h 56m

$307

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Wed 6/3

6:15 pm-9:50 pm

1 stop5h 35m

Ontario

Sat 6/6

5:40 am-1:40 pm

2 stops6h 00m

$308

DallasOntario

DFW - ONT

DFWONT

Dallas/Fort Worth

Thu 5/7

4:25 pm-11:34 pm

2 stops9h 09m

Ontario

Mon 5/11

9:50 am-12:35 am

2 stops12h 45m

$317

DallasOntario

DFW - ONT

DFWONT

Dallas/Fort Worth

Mon 3/23

4:55 pm-8:50 pm

1 stop5h 55m

Ontario

Tue 3/31

11:05 am-11:29 pm

2 stops10h 24m

$330

DallasOntario

DFW - ONT

DFWONT

Dallas/Fort Worth

Wed 6/3

6:00 am-12:12 pm

1 stop8h 12m

Ontario

Sat 6/6

5:45 am-1:34 pm

1 stop5h 49m

$331

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Tue 3/10

9:05 am-3:40 pm

2 stops8h 35m

Ontario

Fri 3/13

3:05 pm-11:30 pm

1 stop6h 25m

$332

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Sat 4/18

4:40 pm-5:50 pm

Nonstop3h 10m

Ontario

Mon 4/20

1:55 pm-10:35 pm

1 stop6h 40m

$335

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Thu 4/2

6:00 am-9:55 am

1 stop5h 55m

Ontario

Mon 4/6

1:10 pm-9:15 pm

1 stop6h 05m

$339

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Wed 3/11

7:00 pm-10:35 pm

1 stop5h 35m

Ontario

Thu 3/12

1:10 pm-9:15 pm

1 stop6h 05m

$359

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Mon 4/27

6:00 am-10:55 am

2 stops6h 55m

Ontario

Sun 5/10

4:00 pm-8:50 pm

Nonstop2h 50m

$360

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/24

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 February 20, 2026.

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, February is the cheapest month in which you can book a flight from Dallas to Ontario (average of $33). 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 February 24, 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 32% 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 February 21, 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 February 24, 2026.

The most flights from A78 to ONT are scheduled on a Monday (16 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (12 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 February 24, 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
4,300 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Overall

8.0

Crew

8.6

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
4,300 reviews
Southwest
8.0
Very good
4,300 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Overall

8.0

Crew

8.6

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
8,239 reviews
Southwest
8.0
Very good
4,300 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Overall

8.0

Crew

8.6

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
11,342 reviews
Southwest
8.0
Very good
4,300 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Overall

8.0

Crew

8.6

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
8,491 reviews
Southwest
8.0
Very good
4,300 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Overall

8.0

Crew

8.6

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
3,042 reviews
Southwest
8.0
Very good
4,300 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Overall

8.0

Crew

8.6

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 15 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 15m. Delta provides one of the quickest options available for as low as $321. 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 77% 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 $48. 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 (94%), Frontier (93%) and Qatar Airways (76%).

  • What are the cheapest flights from Dallas to Ontario?

    On average you can expect to pay $211 for a flight from Dallas to Ontario. The cheapest flight overall is $74 while the most popular route, (Dallas/Fort Worth - Ontario) is currently priced at $126.

  • 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, February is the cheapest month in which you can book a flight from Dallas to Ontario (average of $33). 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 February 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$52Average$149FlexibilityNo cancel feeOn-time65%
FrontierCheapest$58Average$221FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$139Average$338FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$163Average$315FlexibilityNo cancel feeOn-time71%
DeltaCheapest$178Average$318FlexibilityNo cancel feeOn-timeN/A

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