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Amazing United ONT to DEN Flight Deals

The cheapest flights to Denver Intl. found within the past 7 days were $74 round trip and $49 one way. Prices and availability subject to change. Additional terms may apply.



FAQs about United Airlines Flights from ONT to DEN

What terminal is United Airlines at Ontario, CA (ONT-Los Angeles - Ontario Intl.)?

At Ontario, CA (ONT-Los Angeles - Ontario Intl.), United Airlines flights to Denver, CO (DEN-Denver Intl.) normally depart from terminal 2. Like to know exactly which terminal you'll be disembarking at? It'll likely be the main terminal.

Are there United Airlines non-stop flights from ONT to DEN?

There sure are. Save time and energy and jet straight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Denver, CO (DEN-Denver Intl.) with United Airlines. Avoid layovers, lessen the risk of losing your luggage and get your vacation underway faster — direct flights are the preferred way to travel for many wise wanderers.

How long is an United Airlines flight from ONT to DEN?

Your United Airlines flight should take you from ONT to DEN in roughly 3 hours and 20 minutes. If you're not a huge fan of talking to fellow travelers while you're thousands of feet in the air, don't worry — you won't have to shoot the breeze for too long.

What type of aircraft does United Airlines fly from ONT to DEN?

The Airbus A319 and the Bombardier CRJ are generally flown by United Airlines between Ontario, CA (ONT-Los Angeles - Ontario Intl.) and Denver, CO (DEN-Denver Intl.).

How many direct and indirect flights does United Airlines fly from ONT to DEN?

Take your pick of roughly 3 flights per day with United Airlines from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Denver, CO (DEN-Denver Intl.).

If I am not able to travel due to COVID-19, can I change my booking to a later date?

For more info about changing your flight to Denver, CO (DEN-Denver Intl.), please visit our Customer Service Portal.

What is the best day to buy a plane ticket?

This just in! Airfares offered on Tuesdays tend to be the cheapest, according to flight demand on Travelocity in 2019. Wednesday and Friday prices are also good, but you may want to prepare your budget if booking on a Monday, as data shows the start of the week is when prices are generally at their highest.

What are the cheapest days to fly?

Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2019, flights departing on a Tuesday 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.

How far in advance can you book a flight?

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 2019 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 1-2 weeks prior to their travel dates.

How can I save money on airline tickets?

We'll let you in on a secret...You can save big on flights if you mix and match your airlines and fare types. In fact, travelers who booked flights on Travelocity in 2019 saved nearly 50% when their return flights consisted of two different airlines or fare types.

*According to flight demand on Travelocity.com from January to December 2019. Savings are subject to change based on departure location, date and destination.

Carrier Flight Depart ONT Arrive DEN Thu
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UA 703 05:30 am 08:44 am Check fare Check fare Check fare Check fare Check fare Check fare Check fare 0 stop(s)

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*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.