San Bernardino Mountains

$322 Cheap United flights Atlanta (ATL) to Ontario Intl. Airport (ONT)

View $322 flight on Wed, Jul 8, 2026Opens in a new window

$322 Cheap United flights Atlanta (ATL) to Ontario Intl. Airport (ONT)

Prices were available within the past 7 days and start at $322 for one-way flights and $459 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Jul 22 - Wed, Jul 29
ATL
Atlanta
ONT
Ontario
$459 Roundtrip, found 17 hours ago
$459
Roundtrip
found 17 hours ago
Select United flight, departing Wed, Jul 22 from Atlanta to Ontario, returning Wed, Jul 29, priced at $459 found 17 hours ago

Alternative airports near Ontario

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to John Wayne SNA. Cheapest option available. Average driving time to city center is 42 minutes. Flights from $379
SNA
John Wayne
Cheapest
Average driving time to city center42 min
Flights from $379

Travel information

Origin airport
Hartsfield-Jackson Atlanta Intl.
Destination airport
Ontario Intl. Airport
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, United
Popular airline
Frontier Airlines
Distance
3029 km
Average flight time
1 hour 59 mins

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