Vuelos de United de Aeropuerto Internacional LA/Ontario (ONT) a Denver (DEN) desde $75

It’s prudent to know about any travel advice reports and quarantine requirements in effect in your destination. Make sure you go to our Covid-19 Travel Advisor for up-to-date information on flying to DEN from Ontario Airport.

At ONT, United Airlines flights to DIA airport normally set off from terminal 2. Wondering which terminal you’ll be disembarking at? It’ll most likely be the main terminal.

If you need to get from ONT to Denver Intl. Airport (DEN) and want a direct flight, United Airlines will sort you out. Reserve your ticket now and you’ll be vacationing at the other end in a flash.

3 hours and 13 minutes is roughly how long you’ll be up in the air for if you’re traveling with United Airlines from ONT to DIA airport. That’ll allow you just enough time to read some of your favorite book or squeeze in a nap.

United Airlines generally operates the Airbus A319 or the Boeing 737-900 on the route between Los Angeles - Ontario Intl. Airport (ONT) and Denver Airport.

When traveling from ONT to DEN, you’ll find there are approximately 3 United Airlines daily flights to choose from.

For more info about changing your flight to Denver Airport, please visit our Customer Service Portal.

This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.

Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.

Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.