Question 1

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Thursday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Question 2

Which airline has the best punctuality record on Ontario to Dallas flights?

Accepted Answer

Over the last year, Frontier have had the lowest number of delays on this route, with just 11% of flights being delayed.

Question 3

How often are flights from Ontario to Dallas delayed?

Accepted Answer

About 11% of weekly flights between Ontario and Dallas have experienced delays in the past year, with the average delay time being 146 minutes.

Question 4

What is the most punctual flight time for Ontario to Dallas flights?

Accepted Answer

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

Question 5

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

Accepted Answer

Our cheapest airline available from Ontario to Dallas is Frontier. Our recent data shows that you can find tickets from as low as $113 on this airline. Additional options worth looking into are JetBlue and Southwest, starting at $148 and $204 round-trip. These flights start at 65% lower than the current average price 3 months from now.

Question 6

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

Accepted Answer

$55 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on American Airlines and Delta, with prices starting from $110 and $129, respectively.

Question 7

How far ahead should I book a flight from Ontario to Dallas?

Accepted Answer

The best time to book flights from Ontario to Dallas is 46 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.

Question 8

What is the cheapest month to book a flight from Ontario to Dallas?

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Ontario to Dallas (average of $269). Flying from Ontario to Dallas in June is currently the most expensive (average of $432). 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.

Question 9

What is the cheapest day to fly from Ontario to Dallas?

Accepted Answer

Travelers seeking maximum savings on their Ontario to Dallas flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Question 10

Weekly flight availability from Ontario to Dallas

Accepted Answer

The most flights from ONT to A78 are scheduled on a Friday (23 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (20 on average).

Question 11

E

Accepted Answer

In terms of precipitation, rainfall in Dallas ranges from 1.9 - 4.9 inches per month. May is typically the wettest month, when rainfall can reach 4.9 in. August is typically the driest time to visit Dallas when rainfall is around 1.9 in.

Question 12

E

Accepted Answer

If weather is an important factor for your trip to Dallas, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 86.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 46.4 F).

Question 13

What are the cheapest flights from Ontario to Dallas?

Accepted Answer

The cheapest flight price from Ontario to Dallas is $132. On average you can expect to pay $1,503. The most popular route, (Ontario - Dallas/Fort Worth), can usually be booked for $179.

Question 14

What are the most reliable airlines from Ontario to Dallas?

Accepted Answer

Consider British Airways (85%), Qatar Airways (84%) or Royal Jordanian (82%) when booking your flight. These represent the most reliable airlines when flying from Ontario to Dallas.

Question 15

What are the most popular airlines that fly from Ontario to Dallas?

Accepted Answer

Frontier, American Airlines and Southwest are the most popular airlines when flying from Ontario to Dallas.

Question 16

What is the cheapest time of day to fly from ONT to DFW?

Accepted Answer

A simple way to save on the total cost of your ticket is to fly from Ontario to Dallas in the afternoon. If you’re flexible enough to do this you can expect to save up to 16% on your trip compared to booking a flight in the morning.

Question 17

What airport do you fly from for flights from Ontario to Dallas?

Accepted Answer

Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Dallas. 4 airlines have flights from Ontario to Dallas on a regular basis. Booking flights from Ontario to Dallas should not be difficult; the airport handles an average of 21 outbound flights to Dallas per day.

Question 18

Can I find deals for flights from Ontario to Dallas that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Ontario to Dallas flights, Cheapflights offers vacation packages that include both flights and hotel.

Question 19

How can I find direct flights from Ontario to Dallas?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Dallas.

Question 20

Can I find deals for business class flights from Ontario to Dallas?

Accepted Answer

Yes. Cheapflights offers flight deals from Ontario to Dallas by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Popular in	June
Cheapest in	December
Average price	$329

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$113	Average$296	FlexibilityNo cancel fee	On-time62%
JetBlue	Cheapest$148	Average$305	FlexibilityNo cancel fee	On-time62%
Southwest	Cheapest$204	Average$436	FlexibilityNo cancel fee	On-time63%
American Airlines	Cheapest$221	Average$546	FlexibilityNo cancel fee	On-time71%

Cheap flights from Ontario (ONT) to Dallas

Find cheap flights from Ontario to Dallas with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Ontario to Dallas

Popular in

Cheapest in

Average price

Best time to book a flight from Ontario to Dallas

Have a flexible travel schedule? Discover the best time to fly to Dallas from Ontario with our price prediction graph.

Cheapflights Insights

How far ahead should I book a flight from Ontario to Dallas?

The best time to book flights from Ontario to Dallas is 46 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 Ontario to Dallas?

What is the cheapest time of day to fly from ONT to DFW?

A simple way to save on the total cost of your ticket is to fly from Ontario to Dallas in the afternoon. If you’re flexible enough to do this you can expect to save up to 16% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Ontario to Dallas?

Travelers seeking maximum savings on their Ontario to Dallas flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Ontario to Dallas

The most flights from ONT to A78 are scheduled on a Friday (23 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (20 on average).

How often are flights from Ontario to Dallas delayed?

About 11% of weekly flights between Ontario and Dallas have experienced delays in the past year, with the average delay time being 146 minutes.

What is the most punctual flight time for Ontario to Dallas flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Thursday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Ontario to Dallas flights?

Over the last year, Frontier have had the lowest number of delays on this route, with just 11% of flights being delayed.

The best insider tips for Ontario to Dallas 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 Ontario to Dallas trip

Our travel experts

Reviews of airlines servicing Dallas

Read reviews from past customers who have flown Southwest,JetBlue, andAmerican Airlines from Ontario to Dallas. 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.

Related info for your journey

What airport do you fly from for flights from Ontario to Dallas?

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

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

What are the most reliable airlines from Ontario to Dallas?

What are the cheapest flights from Ontario to Dallas?

Can I find deals for flights from Ontario to Dallas that include hotel bookings?

How can I find direct flights from Ontario to Dallas?

Can I find deals for business class flights from Ontario to Dallas?

What is the cheapest month to book a flight from Ontario to Dallas?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Dallas

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Dallas by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Ontario to Dallas by cabin class

Find flights from Ontario to Dallas, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Ontario and Dallas flights

Browse other Ontario and Dallas flight options. Last updated on September 24, 2026.

Other flights from Ontario

Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on September 24, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Top 4 airlines flying from Ontario to Dallas

100% Free

Book with Flexibility

Travel Smart