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Cheap flights from Ontario to Dallas from $70

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Dallas departing on 10/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Ontario to Dallas

Cheap round-trip flights

Frontier Logo
12:13 pm - 5:27 pmONT-DFW
3h 14mnonstop
Frontier Logo
10:10 am - 11:28 amDFW-ONT
3h 18mnonstop
$126Frontier
Find Deal
Fri, Oct 3 - Mon, Oct 6
Frontier Logo
12:13 pm - 5:27 pmONT-DFW
3h 14mnonstop
Frontier Logo
10:10 am - 11:28 amDFW-ONT
3h 18mnonstop
$127Frontier
Find Deal
Fri, Oct 3 - Mon, Oct 6
Frontier Logo
8:59 pm - 9:16 amONT-DFW
10h 17m1 stop
Frontier Logo
5:03 pm - 6:15 pmDFW-ONT
3h 12mnonstop
$128Frontier
Find Deal
Sat, Oct 4 - Sun, Oct 5
Frontier Logo
12:13 pm - 5:27 pmONT-DFW
3h 14mnonstop
Frontier Logo
2:22 pm - 11:50 pmDFW-ONT
11h 28m1 stop
$130Frontier
Find Deal
Fri, Oct 3 - Tue, Oct 7
Frontier Logo
11:59 am - 5:05 pmONT-DFW
3h 06mnonstop
Frontier Logo
10:11 am - 11:40 pmDFW-ONT
15h 29m1 stop
$131Frontier
Find Deal
Thu, Nov 13 - Sun, Nov 16
Frontier Logo
8:34 am - 1:41 pmONT-DFW
3h 07mnonstop
Frontier Logo
6:35 am - 7:49 amDFW-ONT
3h 14mnonstop
$132Frontier
Find Deal
Thu, Oct 23 - Sat, Oct 25
Frontier Logo
12:13 pm - 5:27 pmONT-DFW
3h 14mnonstop
Frontier Logo
6:00 am - 10:13 pmDFW-ONT
18h 13m1 stop
$134Frontier
Find Deal
Fri, Oct 3 - Mon, Oct 6
Frontier Logo
12:13 pm - 5:27 pmONT-DFW
3h 14mnonstop
Frontier Logo
6:00 am - 10:13 pmDFW-ONT
18h 13m1 stop
$135Frontier
Find Deal
Fri, Oct 3 - Mon, Oct 6
Logo
8:00 am - 6:40 pmONT-DFW
8h 40m1 stop
Logo
5:29 pm - 9:56 pmDFW-ONT
6h 27m1 stop
$149
Find Deal
Wed, Oct 1 - Sat, Oct 4
American Airlines Logo
6:10 am - 11:10 amONT-DFW
3h 00mnonstop
American Airlines Logo
9:35 pm - 10:42 pmDFW-ONT
3h 07mnonstop
$159American Airlines
Find Deal
Tue, Oct 21 - Tue, Oct 28

Frontier flights from Ontario to Dallas/Fort Worth Airport

Our best Frontier deals on Ontario to Dallas/Fort Worth Airport flight tickets
Frontier
Oct 3
ONT12:13 pmOntario
3h 14m
DFW5:27 pmDallas/Fort Worth
Oct 6
DFW10:10 amDallas/Fort Worth
3h 18m
ONT11:28 amOntario
$126
Find similar
Frontier
Oct 3
ONT12:13 pmOntario
3h 14m
DFW5:27 pmDallas/Fort Worth
Oct 6
DFW10:10 amDallas/Fort Worth
3h 18m
ONT11:28 amOntario
$127
Find similar
Frontier
Oct 4
ONT8:59 pmOntario
10h 17m
1 stop
DFW9:16 amDallas/Fort Worth
Oct 5
DFW5:03 pmDallas/Fort Worth
3h 12m
ONT6:15 pmOntario
$128
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Dallas/Fort Worth Airport 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, momondo users made 832,500 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Ontario to Dallas/Fort Worth Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Fri 10/3

12:13 pm-5:27 pm

Nonstop3h 14m

Dallas/Fort Worth

Mon 10/6

10:10 am-11:28 am

Nonstop3h 18m

$126

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Fri 10/3

12:13 pm-5:27 pm

Nonstop3h 14m

Dallas/Fort Worth

Mon 10/6

10:10 am-11:28 am

Nonstop3h 18m

$127

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Sat 10/4

8:59 pm-9:16 am

1 stop10h 17m

Dallas/Fort Worth

Sun 10/5

5:03 pm-6:15 pm

Nonstop3h 12m

$128

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Fri 10/3

12:13 pm-5:27 pm

Nonstop3h 14m

Dallas/Fort Worth

Tue 10/7

2:22 pm-11:50 pm

1 stop11h 28m

$130

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Thu 11/13

11:59 am-5:05 pm

Nonstop3h 06m

Dallas/Fort Worth

Sun 11/16

10:11 am-11:40 pm

1 stop15h 29m

$131

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Thu 10/23

8:34 am-1:41 pm

Nonstop3h 07m

Dallas/Fort Worth

Sat 10/25

6:35 am-7:49 am

Nonstop3h 14m

$132

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Fri 10/3

12:13 pm-5:27 pm

Nonstop3h 14m

Dallas/Fort Worth

Mon 10/6

6:00 am-10:13 pm

1 stop18h 13m

$134

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Fri 10/3

12:13 pm-5:27 pm

Nonstop3h 14m

Dallas/Fort Worth

Mon 10/6

6:00 am-10:13 pm

1 stop18h 13m

$135

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Wed 10/1

8:00 am-6:40 pm

1 stop8h 40m

Dallas/Fort Worth

Sat 10/4

5:29 pm-9:56 pm

1 stop6h 27m

$149

OntarioDallas

ONT - DFW

ONTDFW

Ontario

Tue 10/21

6:10 am-11:10 am

Nonstop3h 00m

Dallas/Fort Worth

Tue 10/28

9:35 pm-10:42 pm

Nonstop3h 07m

$159

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Dallas from

How to get the cheapest flight ticket from Ontario to Dallas/Fort Worth Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Dallas/Fort Worth Airport?

The cheapest month to fly to Dallas/Fort Worth Airport from Ontario is in April. Flight prices, which tend to average around $178, are often lower during this time because this is during the off-season. If you’re not able to fly to Dallas/Fort Worth Airport in April, then March is your next best option. Flight prices from Ontario to Dallas/Fort Worth Airport during March average around $200.

What is the cheapest day to depart on your flight to Dallas/Fort Worth Airport?

On average, the least expensive day to fly to Dallas/Fort Worth Airport from Ontario is on a Friday. momondo users have found tickets for Friday departures for as low as $334. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Ontario to Dallas/Fort Worth Airport for around $427.

What is the cheapest time of day to depart on your flight to Dallas/Fort Worth Airport?

Flying to Dallas/Fort Worth Airport from Ontario in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $296 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $401 on average. Flights to Dallas/Fort Worth Airport from Ontario in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Ontario to Dallas/Fort Worth flight route?

Fly from Ontario to Dallas/Fort Worth for the best Ontario - Dallas/Fort Worth flight prices

How far in advance should I book a flight to Dallas/Fort Worth Airport?

You are more likely to see cheaper flights to Dallas/Fort Worth Airport from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Dallas/Fort Worth Airport for around $238 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dallas/Fort Worth Airport from Ontario for as low as $209 on momondo.

What cabin class options are available on Ontario to Dallas/Fort Worth flights?

There are 4 cabin classes available to choose from on Ontario to Dallas/Fort Worth flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Ontario to Dallas/Fort Worth Airport flight prices changed over time?

As of September 2025, prices for Ontario to Dallas/Fort Worth Airport flights are approximately 35% more expensive when compared to flights at the same time last year.

When to book flights from Ontario to Dallas/Fort Worth Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Dallas/Fort Worth Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Dallas/Fort Worth Airport (ONT to DFW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Dallas/Fort Worth Airport

Best Price Found

$156

Fastest flight time

2h 47m

Direct flights

Every day
The best one-way flight to Dallas/Fort Worth Airport from Ontario in the past 72 hours is $156. The best round-trip flight deal from Ontario to Dallas/Fort Worth Airport found on momondo in the last 72 hours is $250.
The fastest flight from Ontario to Dallas/Fort Worth Airport takes 2h 47m
Direct flights go from Ontario to Dallas/Fort Worth Airport every day.
Search flight deals

  • How far is Ontario to Dallas/Fort Worth by plane?

    There are 1187.9 mi between Ontario and Dallas/Fort Worth. Typically, this will take 3h 00m by plane in normal conditions.

  • When did momondo last update prices for flights from Ontario Airport to Dallas/Fort Worth Airport?

    Prices for flights from Ontario Airport to Dallas/Fort Worth Airport were last updated today.

  • How many operators does momondo search for flights from Ontario Airport to Dallas/Fort Worth Airport?

  • How old do you have to be to fly from Ontario Airport to Dallas/Fort Worth Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Dallas/Fort Worth Airport.

  • What documentation or ID do you need to fly to Dallas/Fort Worth Airport?

    The travel and health documents required for your trip to Dallas/Fort Worth Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Dallas/Fort Worth Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Ontario to Dallas/Fort Worth Airport?

  • What is the most popular airline from Ontario to Dallas/Fort Worth Airport?

Best airlines flying from Ontario to Dallas/Fort Worth Airport

Compare and see reviews for airlines that fly from Ontario to Dallas/Fort Worth Airport with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $83Free CancellationRating
6.3
8,015 reviews
Search Spirit Airlines flights
FrontierPriceFrom $86Free CancellationRating
5.8
3,172 reviews
Search Frontier flights
DeltaPriceFrom $153Free CancellationRating
7.9
7,954 reviews
Search Delta flights
SouthwestPriceFrom $179Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
American AirlinesPriceFrom $183Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $225Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

  • American Airlines Flights From Ontario to Dallas/Fort Worth Airport

    American Airlines operates around 33 flights from Ontario to Dallas/Fort Worth Airport every week. The average price of these flights found in the last 72 hours has been $335, but momondo users have found American Airlines deals from Ontario to Dallas/Fort Worth Airport from as low as $183 round-trip. American Airlines has been scored 7.2/10 in 10,000 reviews.

  • Frontier Flights From Ontario to Dallas/Fort Worth Airport

    The best Frontier deal for Ontario to Dallas/Fort Worth Airport flight tickets found on momondo in the last 72 hours was $86, round-trip. It should be noted that an average Frontier flight deal for this route in this time was higher, at $187 round-trip. Frontier operates 2 flights out of Ontario into Dallas/Fort Worth Airport in an average week, so prices vary by time and availability. 3,172 Frontier reviews by users on momondo have scored the airline at 5.8/10.

Traveling to a place near Dallas?

Book flights to Dallas if you plan to visit one of these locations
Fort Worth
Arlington
Frisco
Irving
Grapevine
Plano
Denton
Thackerville
Grand Prairie
Garland
McKinney
Durant
Rockwall
Richardson
Lewisville
Ardmore
Addison
Allen
Waxahachie
Granbury

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Dallas?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to Dallas for you.

Can I find flights from Ontario to Dallas with flexible booking policies on momondo?

Yes. All flights to Dallas from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Ontario to Dallas?

Once you have performed a search for Ontario to Dallas flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ontario to Dallas right now. Can momondo alert me if prices change?

Price alerts on flights to Dallas from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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