$119 Cheap Delta flights Dallas (DFW) to Ontario (ONT)

Make use of the “Price (lowest to highest)” filter on Expedia to search for cheap Delta Air Lines round-trip flights from $231 from DFW to ONT. Affordable one-way tickets from $119 are also available.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Search for one-way or round-trip flights to Ontario in January or April. You could find an affordable fare with Delta Air Lines during these off-peak times.

For cheap Delta Air Lines fares from Dallas-Fort Worth Intl. Airport (DFW) to Los Angeles - Ontario Intl. Airport (ONT), start searching one to three months before your planned departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also influence the price you pay. Sunday is typically the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your trip on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Simply enter your dates, press search and use the “Nonstop” filter on Expedia to find any direct flights from DFW to ONT with Delta Air Lines or other carriers.

Search Delta Air Lines’s earliest flights from DFW to ONT by selecting the “Early Morning” and “Morning” filters. Not only will you arrive sooner, early departures are also 20% less likely to be canceled.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Los Angeles - Ontario Intl. Airport (ONT) is the primary Ontario gateway for Delta Air Lines flights from Dallas-Fort Worth Intl. Airport (DFW).

Heading from DFW to ONT with Delta Air Lines comes with a host of perks, such as a rewarding loyalty program and an excellent in-flight experience. Plus, when you book through Expedia, One Key™ members can earn OneKeyCash™* to spend on select future travel purchases. That’s on top of the Delta SkyMiles points you can earn with Delta Air Lines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on your ticket type, a fee is typically charged if you modify or cancel your booking more than 24 hours after confirmation. To find tickets with more flexibility, select our “No cancel fee” or “Changes included” filter while looking for flights. For more information on canceling or modifying your reservation, go to “Trips,” select your flight and tick “Manage Booking.”