$107 Cheap American Airlines flights Denver (DEN) to Ontario (ONT)

View $107 flight on Wed, Apr 15, 2026Opens in a new window

$107 Cheap American Airlines flights Denver (DEN) to Ontario (ONT)

Prices were available within the past 7 days and start at $107 for one-way flights and $200 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Feb 3 - Tue, Feb 10
DEN
Denver
ONT
Ontario
$200 Roundtrip, found 4 days ago
$200
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Feb 3 from Denver to Ontario, returning Tue, Feb 10, priced at $200 found 4 days ago

Find the cheapest month to fly from Denver (DEN) to Ontario (ONT)

February is typically the cheapest month to fly

From $48 - $102 per traveler.

Alternative airports near Ontario

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

Select flight to Los Angeles - Ontario Intl. ONT. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $79
ONT
Los Angeles - Ontario Intl.
CheapestClosest
Average driving time to city center8 min
Flights from $79
Flights from Denver (DEN) to Ontario (ONT)
Origin airport
Denver Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Frontier Airlines
Popular airline
Frontier Airlines
Distance
1306 km
Average flight time
1 hour 29 mins