$84 United Cheap Flights from Denver to Ontario

Find The Best Day To Fly from Denver to Ontario

Amazing United DEN to ONT Flight Deals

The cheapest flights to Los Angeles - Ontario Intl. found within the past 7 days were $128 round trip and $84 one way. Prices and availability subject to change. Additional terms may apply.

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FAQs about United Airlines Flights from DEN to ONT

Can I catch a flight from Denver, CO (DEN-Denver Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) right now?

It's wise to find out about any travel advice reports and quarantine requirements in effect in your destination city. Make sure you visit the Covid-19 Travel Advisor for up-to-date information on booking a flight to Ontario, CA (ONT-Los Angeles - Ontario Intl.) from Denver, CO (DEN-Denver Intl.).

What terminal is United Airlines at Denver Airport?

Before you jet off from Denver, CO (DEN-Denver Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) with United Airlines, it might be a good idea to get in touch with the airline for your terminal information. While your ticket should display some of the details, we can't guarantee it.

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

Unfortunately, there aren't any direct flights between Denver Intl. Airport (DEN) and Ontario, CA (ONT-Los Angeles - Ontario Intl.) with United Airlines. Plan to make at least one stopover if you have to stick to this particular airline and route.

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 Los Angeles - Ontario Intl. Airport (ONT), please visit our Customer Service Portal.

Which airlines offer COVID-19 measures and exercise social distancing rules?

Southwest Airlines, American Airlines and Delta are just some of the many carriers that employ COVID-19 measures and use social distancing rules on their flights. Some of their strategies are cleaning with disinfectant and providing passenger masks.

What is the best day to buy a plane ticket?

This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2020. Wednesday and Friday prices are also good, but you may want to prepare your budget if booking on a Sunday, as data shows the end 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 2020, 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.

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 2020 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2 weeks to 2 months 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 2020 saved nearly 40% when their return flights consisted of two different airlines or fare types.

*According to flight demand on Travelocity.com from January to December 2020. Savings are subject to change based on departure location, date and destination.

CarrierFlightDepart DENArrive ONTSun
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Stops
UA43011:15 am00:36 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
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Discover our best United flight from Denver DEN to Ontario ONT 

To find the best deals on flights to Denver from Ontario with United, just enter your travel dates, filter by United, and hit search. You’ll find 1 flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from Denver DEN to Ontario ONT with United 

If you’re planning a round trip, booking return flights with United is usually the most cost-effective option. With airfares ranging from $128 to $128, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way United flights from Denver DEN to Ontario ONT 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way United flight from Denver to Ontario costs from $84. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to Ontario ONT from  Denver DEN with United 

To find a cheap United flight from Denver DEN to Ontario ONT, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on United flights from Denver DEN to Ontario ONT 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as February, or if you book a flight with a stopover. 

 

Find nonstop flights from Denver DEN to Ontario ONT with United 

If you’re keen to be on Ontario soil fast, don’t waste time with a stopover—filter your search results to show direct United flights only. The journey takes around 0 hour(s) 21 min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for United flights from Denver DEN to Ontario ONT 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to Ontario ONT from  Denver DEN with United on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

United Airports
Hop on a(n) United flight today by flying to many destinations out of these domestic and international airports:
Airport Code
Country
Airport Name
Number of Flights
ORDUSAO'Hare Intl.227
DENUSADenver Intl.226
IAHUSAGeorge Bush Intercontinental136
IADUSAWashington Dulles Intl.100
SFOUSASan Francisco Intl.64
LAXUSALos Angeles Intl.23
EWRUSALiberty Intl.20
FRADEUFrankfurt Intl.19
NRTJPNNarita Intl.19
PEKCHNCapital Intl.16

Travelers ❤️ these 🏨 after their flight to Ontario

Holiday Inn Ontario Airport, an IHG Hotel
Holiday Inn Ontario Airport, an IHG Hotel
3 out of 5
2155 E. Convention Center Way, Ontario, CA
The price is $106 per night from Jan 24 to Jan 25
This hotel features a restaurant, a gym, and a bar/lounge. Traveling on business? Take advantage of the 3 conference rooms, as well as the 24-hour business center ...
4/5 Very Good! (26 reviews)
"Room was fantastic."

Reviewed on Nov 14, 2021

Holiday Inn Ontario Airport, an IHG Hotel
Embassy Suites Ontario Airport
Embassy Suites Ontario Airport
3.5 out of 5
3663 E Guasti Rd, Ontario, CA
The price is $144 per night from Jan 30 to Jan 31
This hotel features an indoor pool and a 24-hour gym. Traveling on business? Take advantage of the 24-hour business center, free WiFi in public areas, and free ...
4.2/5 Very Good! (12 reviews)
"One of the best 👌"

Reviewed on Sep 15, 2021

Embassy Suites Ontario Airport
DoubleTree by Hilton Ontario Airport
DoubleTree by Hilton Ontario Airport
4 out of 5
222 N Vineyard Ave, Ontario, CA
The price is $141 per night from Feb 3 to Feb 4
This smoke-free hotel features a nightclub and 2 restaurants. Traveling on business? Take advantage of the 13 conference rooms, 24-hour business center, and ...
3.7/5 Good! (26 reviews)
"Everything"

Reviewed on Nov 20, 2021

DoubleTree by Hilton Ontario Airport
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
*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.