$149 Cheap Delta flights Greensboro (GSO) to Ontario (ONT)

Use the “Price (lowest to highest)” filter on Expedia to search for cheap Delta Air Lines return flights from $297 from GSO to ONT. Affordable one-way tickets from $149 are available as well.**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.

January is one of the least expensive months to get away to Ontario with Delta Air Lines. You could also find excellent prices on one-way and round-trip fares in April.

Search for affordable Delta Air Lines flights from Piedmont Triad Intl. Airport (GSO) to Los Angeles - Ontario Intl. Airport (ONT) one to three months before your day of departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and journey, the best day to book a domestic flight is usually Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**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.

To figure out if there’s a direct route from GSO to ONT with Delta Air Lines or another airline, check the “Nonstop” box when browsing for flights.

Filter your results by “Morning” and “Early Morning” to browse the earliest departures from GSO to ONT. Setting off early means you’re less likely to experience cancellations.**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 Piedmont Triad Intl. Airport (GSO).

Delta Air Lines makes traveling from GSO to ONT more comfortable with a rewarding loyalty program and an excellent in-flight experience. You could even start earning points with Delta SkyMiles. Don’t forget to join Expedia’s free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on the ticket type you purchased, a fee may apply if you change or cancel your flight more than 24 hours after it has been confirmed. To secure tickets with more flexibility, select our “Changes included” and “No cancel fee” boxes while looking for flights. For more details on changing or canceling your reservation, visit “Trips,” select your flight and click on “Manage Booking.”