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$48+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
DFW — ONT
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
1 adult, Economy
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Cheapflights Tip: The best prices from Dallas to Ontario are usually found in September or February, booked 48 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

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 April 15, 2025.

Round-trip from

$83
(Frontier)

One-way from

$48
(Cheapflightsfares)

Popular in

January

Cheapest in

September

Average price

$162
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. 9% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 15, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/14. 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 5/104:27 pmDFW - ONT
Nonstop3h 20mFrontier
Tue 5/133:05 pmONT - DFW
Nonstop3h 15mFrontier
Deal found 4/14$81
This Southwest deal was found by Cheapflights users on 4/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/77:00 pmDAL - ONT
Nonstop3h 15mSouthwest
Tue 5/1312:55 pmONT - DAL
1 stop5h 40mSouthwest
Deal found 4/14$226
This Delta deal was found by Cheapflights users on 4/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/108:15 amDFW - ONT
1 stop6h 02mDelta
Wed 7/910:59 pmONT - DFW
1 stop7h 38mDelta
Deal found 4/13$237
This Delta deal was found by Cheapflights users on 4/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1312:00 pmDAL - ONT
2 stops13h 42mDelta
Sat 5/247:05 amONT - DAL
1 stop8h 39mDelta
Deal found 4/14$242
This American Airlines deal was found by Cheapflights users on 4/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/106:30 pmDFW - ONT
1 stop5h 08mAmerican Airlines
Tue 6/1011:59 pmONT - DFW
Nonstop3h 01mAmerican Airlines
Deal found 4/14$254
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/16:23 pmDAL - ONT
2 stops31h 35mAlaska Airlines
Wed 5/76:00 amONT - DAL
1 stop9h 23mAlaska Airlines
Deal found 4/14$361

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 April 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

DFW - ONT

DFWONT

Dallas/Fort Worth

Sat 5/10

4:27 pm-5:47 pm

Nonstop3h 20m

Ontario

Tue 5/13

3:05 pm-8:20 pm

Nonstop3h 15m

$81

DallasOntario

DFW - ONT

DFWONT

Dallas/Fort Worth

Tue 6/10

8:15 am-12:17 pm

1 stop6h 02m

Ontario

Wed 7/9

10:59 pm-8:37 am

1 stop7h 38m

$237

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Thu 5/15

7:10 am-11:00 am

1 stop5h 50m

Ontario

Sun 5/18

6:15 am-11:05 am

Nonstop2h 50m

$243

DallasOntario

DFW - ONT

DFWONT

Dallas/Fort Worth

Tue 6/10

6:30 pm-9:38 pm

1 stop5h 08m

Ontario

Tue 6/10

11:59 pm-5:00 am

Nonstop3h 01m

$254

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Tue 4/29

11:56 am-7:28 pm

1 stop9h 32m

Ontario

Fri 5/2

12:07 pm-10:12 pm

1 stop8h 05m

$281

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Thu 5/1

6:23 pm-3:32 pm

1 stop23h 09m

Ontario

Wed 5/7

6:00 am-5:23 pm

1 stop9h 23m

$385

DallasOntario

DFW - ONT

DFWONT

Dallas/Fort Worth

Wed 5/14

4:27 pm-5:47 pm

Nonstop3h 20m

$48

DallasOntario

DFW - ONT

DFWONT

Dallas/Fort Worth

Wed 5/21

10:41 pm-11:43 pm

Nonstop3h 02m

$90

DallasOntario

DFW - ONT

DFWONT

Dallas/Fort Worth

Sat 6/14

8:15 am-12:17 pm

1 stop6h 02m

$119

DallasOntario

DAL - ONT

DALONT

Dallas Love Field

Tue 5/20

3:59 pm-10:29 pm

1 stop8h 30m

$119

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 14 results
1
2

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 April 11, 2025.

The best time to book flights from Dallas to Ontario 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 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 April 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 in the evening, which can drop the price by up to 21% versus a flight at noon.

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 April 15, 2025.

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).

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

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 April 15, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Dallas to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,876 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,876 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,279 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,917 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,658 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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 14 daily inbound flights from Dallas from 5 different airlines.

  • What are the cheapest airlines flying from Dallas to Ontario round-trip?

    Frontier, at $83, was found to be the cheapest airline from Dallas to Ontario.Alternate airlines to your destination round-trip include American Airlines and Delta. These flights start at 61% 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. American Airlines flights start at $90 while deals on Delta start at $119 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 Frontier (75%), Qatar Airways (74%) and American Airlines (65%).

  • What are the cheapest flights from Dallas to Ontario?

    On average you can expect to pay $153 for a flight from Dallas to Ontario. The cheapest flight overall is $39 while the most popular route, (Dallas/Fort Worth - Ontario) is currently priced at $122.

  • 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.

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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 April 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$70Average$203FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$89Average$162FlexibilityNo cancel feeOn-time65%
DeltaCheapest$157Average$233FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$165Average$471FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$210Average$364FlexibilityNo cancel feeOn-time63%

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