$189 Cheap Delta flights Greensboro (GSO) to Ontario (ONT)

View $189 flight on Sun, Sep 14, 2025Opens in a new window

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$189 Cheap Delta flights Greensboro (GSO) to Ontario (ONT)

Prices were available within the past 7 days and start at $189 for one-way flights and $309 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, Oct 10 - Tue, Oct 14
GSO
Greensboro
ONT
Ontario
$309 Roundtrip, found 2 hours ago
$309
Roundtrip
found 2 hours ago
Select Delta flight, departing Fri, Oct 10 from Greensboro to Ontario, returning Tue, Oct 14, priced at $309 found 2 hours ago
Delta
Tue, Oct 28 - Fri, Nov 7
GSO
Greensboro
ONT
Ontario
$374 Roundtrip, found 3 hours ago
$374
Roundtrip
found 3 hours ago
Select Delta flight, departing Tue, Oct 28 from Greensboro to Ontario, returning Fri, Nov 7, priced at $374 found 3 hours ago
Delta
Fri, Oct 10 - Mon, Oct 13
GSO
Greensboro
ONT
Ontario
$379 Roundtrip, found 1 hour ago
$379
Roundtrip
found 1 hour ago
Select Delta flight, departing Fri, Oct 10 from Greensboro to Ontario, returning Mon, Oct 13, priced at $379 found 1 hour ago
Delta
Fri, Sep 5 - Fri, Sep 12
GSO
Greensboro
ONT
Ontario
$384 Roundtrip, found 1 hour ago
$384
Roundtrip
found 1 hour ago
Select Delta flight, departing Fri, Sep 5 from Greensboro to Ontario, returning Fri, Sep 12, priced at $384 found 1 hour ago
Delta
Fri, Oct 3 - Sat, Oct 11
GSO
Greensboro
ONT
Ontario
$388 Roundtrip, found 16 hours ago
$388
Roundtrip
found 16 hours ago
Select Delta flight, departing Fri, Oct 3 from Greensboro to Ontario, returning Sat, Oct 11, priced at $388 found 16 hours ago
Delta
Sat, Oct 11 - Tue, Oct 14
GSO
Greensboro
ONT
Ontario
$403 Roundtrip, found 2 hours ago
$403
Roundtrip
found 2 hours ago
Select Delta flight, departing Sat, Oct 11 from Greensboro to Ontario, returning Tue, Oct 14, priced at $403 found 2 hours ago
Flights from Greensboro (GSO) to Ontario (ONT)
Origin airport
Piedmont Triad Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Popular airline
Delta
Distance
2120 mi

Frequently asked questions

How much is a Delta Air Lines flight from Piedmont Triad Intl. Airport (GSO) to Los Angeles - Ontario Intl. Airport (ONT)?
Use the "Price (lowest to highest)" filter on Expedia to search for cheap Delta Air Lines return flights from $309 from GSO to ONT. Affordable one-way tickets from $189 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.
What is the cheapest month to fly from GSO to ONT with Delta Air Lines?
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.
What is the cheapest time to book flights from Piedmont Triad Intl. Airport (GSO) to Los Angeles - Ontario Intl. Airport (ONT) with Delta Air Lines?
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.
Does Delta Air Lines fly nonstop from Piedmont Triad Intl. Airport (GSO) to Los Angeles - Ontario Intl. Airport (ONT)?
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.
What is the earliest Delta Air Lines flight from GSO to ONT?
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.
What airports does Delta Air Lines fly into in Ontario?
Los Angeles - Ontario Intl. Airport (ONT) is the primary Ontario gateway for Delta Air Lines flights from Piedmont Triad Intl. Airport (GSO).
Why fly with Delta Air Lines from GSO to ONT?
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.
Can I change or cancel my Delta Air Lines flight from Piedmont Triad Intl. Airport (GSO) to Los Angeles - Ontario Intl. Airport (ONT)?
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."

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