Cheap flights from Ontario to Dallas from $127

If you are unable to visit Dallas during the month of September, then departing from Ontario during the month October is also very affordable. Most momondo users find prices during this month for around $259.

On average, the least expensive day to fly to Dallas from Ontario is on a Thursday. momondo users have found tickets for Thursday departures for as low as $424. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Ontario because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $544.

Flying to Dallas from Ontario in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $437 when looking at flights departing in the afternoon. At noon is when there is more demand to fly to Dallas, so prices are often more expensive at around $457 per ticket.

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

You are more likely to see cheaper flights to Dallas from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Dallas for around $307 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dallas from Ontario for as low as $256 on momondo.

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

Frontier, Southwest, and Delta are the most popular carriers operating from Ontario to Dallas

Frontier, American Airlines and Southwest are the top three most popular airlines that fly to Dallas from Ontario according to our data. Frontier is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Dallas. Keep in mind that there are 7 different airlines that fly to Dallas on a routine basis, so you have a few additional options to choose from.

Historically, on average around 13% 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 138 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. Wednesday 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 12% of their flights experiencing any sort of delay.

As of August 2026, 20 flights take off from Ontario and land in Dallas each day. The most common flight departure time for this route is 2:00PM, with 46% of daily flights taking off at noon.

142 flights are operational weekly from Ontario to Dallas as of August 2026. The most popular departure day for this route is Tue, with 16% of flights per week taking off on this day.