$132 Cheap United flights Denver (DEN) to Ontario (ONT)

View $132 flight on Wed, Apr 15, 2026Opens in a new window

$132 Cheap United flights Denver (DEN) to Ontario (ONT)

Prices were available within the past 7 days and start at $132 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

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.
Distance
1306 km
Average flight time
1 hour 29 mins