$349 Cheap Delta flights Atlanta (ATL) to Ontario (ONT)

View $349 flight on Thu, Jan 22, 2026Opens in a new window

$349 Cheap Delta flights Atlanta (ATL) to Ontario (ONT)

Prices were available within the past 7 days and start at $349 for one-way flights and $399 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, Jan 22 - Mon, Jan 26
ATL
Atlanta
ONT
Ontario
$399 Roundtrip, found 2 days ago
$399
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Jan 22 from Atlanta to Ontario, returning Mon, Jan 26, priced at $399 found 2 days ago
Delta
Thu, Jan 22 - Mon, Jan 26
ATL
Atlanta
ONT
Ontario
$445 Roundtrip, found 2 days ago
$445
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Jan 22 from Atlanta to Ontario, returning Mon, Jan 26, priced at $445 found 2 days ago

Find the cheapest month to fly from Atlanta (ATL) to Ontario (ONT)

February is typically the cheapest month to fly

From $134 - $399 per traveler.
Flights from Atlanta (ATL) to Ontario (ONT)
Origin airport
Hartsfield-Jackson Atlanta Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines
Popular airline
Frontier Airlines
Distance
3029 km
Average flight time
3 hours 18 mins