Cheap flights from Ontario to Dallas from $128

The cheapest month to fly to Dallas/Fort Worth Airport from Ontario is in December. Flight prices, which tend to average around $270, 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 December, then February is your next best option. Flight prices from Ontario to Dallas/Fort Worth Airport during February average around $274.

On average, the least expensive day to fly to Dallas/Fort Worth Airport from Ontario is on a Thursday. momondo users have found tickets for Thursday departures for as low as $439. 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 $569.

Flying to Dallas/Fort Worth Airport from Ontario in the evening is the least expensive time of day to depart. momondo users have found prices as low as $454 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $510 on average. Flights to Dallas/Fort Worth Airport from Ontario at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

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 $336 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 $270 on momondo.

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

Frontier, Delta, and United Airlines are the most popular carriers operating from Ontario to Dallas/Fort Worth

Frontier, American Airlines and Southwest are the top three most popular airlines that fly to Dallas/Fort Worth Airport from Ontario according to our data. Frontier is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Dallas/Fort Worth Airport. Keep in mind that there are 7 different airlines that fly to Dallas/Fort Worth Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 11% of flights between Ontario and Dallas have experienced a delay on any given week. The average delay length over the past 12 months has been 147 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

Thursday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, Frontier have had the least number of delays on this route over the last 12 months; with about 10% of their flights experiencing any sort of delay.

The number of flights available between Ontario and Dallas/Fort Worth Airport is 22 per day as of October 2026. The most frequent departure time is 2:00PM, with 45% of daily flights leaving in the afternoon.

As of October 2026, 155 flights take off from Ontario and land in Dallas/Fort Worth Airport each week. The most common flight departure day for this route is Tue, with 15% of weekly flights taking off on this day.