How long is the flight from Dallas to Ontario?

A quick flight from Dallas to Ontario can take about 5h 57m. Frontier provides one of the quickest options available for as low as $217. The distance between Dallas and Ontario is about 1185 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 $46. Southwest flights start at $79 while deals on Delta start at $97 one-way.

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

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 day to fly from Dallas to Ontario?

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

The most flights from A78 to ONT are scheduled on a Tuesday (12 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (8 on average).

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.

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).

What are the cheapest flights from Dallas to Ontario?

On average you can expect to pay $243 for a flight from Dallas to Ontario. The cheapest flight overall is $62 while the most popular route, (Dallas/Fort Worth - Ontario) is currently priced at $106.

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 (81%) and Qatar Airways (78%).

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

The most popular airlines flying from Dallas to Ontario are Frontier, American Airlines and Southwest. Something to consider prior to booking your flight.

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

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 29% versus a flight in the morning.

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 9 daily inbound flights from Dallas from 5 different airlines.

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.

$67+ Flights from Dallas to Ontario

Round-trip from	$100 (CheapOair)
One-way from	$67 (Kiwi.com)
Popular in	January
Cheapest in	February
Average price	$269

DFW

DFW's Skylink Train connects all terminals efficiently, running every two minutes, perfect for quick terminal transfers.

DAL

DAL offers a streamlined experience with quick security lines and a straightforward layout, ideal for domestic travelers.

ONT

ONT's rental car center offers quick access to I-10, ideal for road trips to Palm Springs or Big Bear.

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$56	Average$153	FlexibilityNo cancel fee	On-time65%
Frontier	Cheapest$58	Average$219	FlexibilityNo cancel fee	On-time62%
Southwest	Cheapest$139	Average$334	FlexibilityNo cancel fee	On-time63%
American Airlines	Cheapest$162	Average$316	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$178	Average$281	FlexibilityNo cancel fee	On-timeN/A

$67+ 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapest flights from Dallas to OntarioExplore 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 janvier 6, 2026.

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 janvier 6, 2026.

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Use the filters below to find and compare flights from Dallas to Ontario that are best for you.

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.

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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 2, 2026.

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

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 janvier 6, 2026.

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 3, 2026.

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 janvier 6, 2026.

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

Airports

DFW

DAL

ONT

Our travel experts

Reviews of airlines servicing Ontario

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.

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?

How long is the flight from Dallas to Ontario?

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

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

What are the most reliable airlines from Dallas to Ontario?

What are the cheapest flights from Dallas to Ontario?

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

How can I find direct flights from Dallas to Ontario?

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

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

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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 janvier 6, 2026.