$24 Cheap Flights from Denver to Ontario

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Find The Best Dates To Fly from Denver Intl. to Los Angeles - Ontario Intl.

Amazing DEN to ONT Flight Deals

The cheapest flights to Los Angeles - Ontario Intl. found within the past 7 days were $48 round trip and $24 one way. Prices and availability subject to change. Additional terms may apply.

Flight Schedule for DEN to ONT

CarrierFlightDepart DENArrive ONTSun
1/29
Mon
1/30
Tue
1/31
Wed
2/1
Thu
2/2
Fri
2/3
Sat
2/4
Stops
UA43011:15 am00:36 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
F997503:09 pm04:40 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
UA45107:20 pm08:39 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
F997710:06 pm11:38 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops

Best Los Angeles - Ontario Intl. Flight and Hotel Packages

Los Angeles - Ontario Intl. flight + hotel packages - economy flights

DoubleTree by Hilton Ontario Airport
Ontario Airport Hotel & Conference Center
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Frequently asked questions

Can I catch a flight from Denver Intl. Airport (DEN) to Los Angeles - Ontario Intl. Airport (ONT) right now?
For info on any current Los Angeles - Ontario Intl. Airport (ONT) travel advice and quarantine requirements, go to the Covid-19 Travel Advisor. Check before you arrange your flight, so you don’t get caught out en route.
Are there direct flights from DEN to Los Angeles - Ontario Intl. Airport (ONT)?
Begin your getaway in the most stress-free way possible and head straight to Los Angeles - Ontario Intl. Airport (ONT) from DEN. Southwest Airlines and United Airlines are among the airlines that offer direct services on this 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 Ontario Airport, please visit our Customer Service Portal.
How long is the flight from Denver Intl. Airport (DEN) to Los Angeles - Ontario Intl. Airport (ONT)?
The flight from Denver Intl. Airport (DEN) to ONT is a quick 2 hours and 19 minutes on average. With such minimal travel time, you won’t need to fret if you forget to pack a phone charger in your cabin baggage.
What is the flight distance from DIA airport to Ontario Airport?
Don’t worry about settling in for a movie. You’d be lucky to even catch up on some TV episodes on the flight between Denver Airport and ONT. You’ll only be covering 820 mi.
What airlines fly from Denver Intl. Airport (DEN) to Ontario Airport?
Choose from a number of airlines offering direct flights between Denver and Ontario. Southwest Airlines (WN) is one of the most popular. This carrier offers 86 flights each month. If you want more options, have a look at the deals on offer from United Airlines (UA). This carrier operates 60 flights every month. Between the two, we’re sure you’ll find a deal to suit your travel needs.
What airlines have practices regarding COVID-19 in place and use social distancing?
From the moment you enter the departure terminal to when you leave the arrivals terminal, if you’re flying with Southwest Airlines, American Airlines or Delta you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.
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 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.
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 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.
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 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.

 

Traveling From Denver Intl.
Traveling To Los Angeles - Ontario Intl.
Shortest Flight Time 0 hours 19 mins
Earliest Departure Time 11:15AM PST
Latest Departure Time 10:06PM PST
Lowest Flight Price $48

Route Info

Flight path for flights from Denver International Airport to LA/Ontario International Airport

Distance:
822.00 miles

Airlines & Aircraft Used on DEN to ONT Flight Routes

Airline Carrier
Aircraft
American Airlines
Boeing 747-400 pax
United Airlines
De Havilland Canada DHC-6 Twin Otter

Discover our best flights from Denver DEN to Ontario ONT. 

With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 

 

Find our best return flights from Denver DEN to Ontario ONT at the right price  

Airfares to Ontario ONT from Denver DEN currently cost between $48 and $75. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way flights from Denver DEN to Ontario ONT 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Denver DEN to Ontario ONT on Travelocity starting at $24. Prices and availability subject to change. Additional terms may apply. 

 

Get to Ontario ONT from Denver DEN quicker with direct flights. 

Get to Ontario faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to ONT from DEN to take around 0 hour(s) 19 min(s).  

 

Find our cheapest airfares for flights from Denver DEN to Ontario ONT

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to ONT from DEN. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  

 

Get our best airfare deals for your flight from Denver DEN to Ontario ONT today 

If you’re flexible about when you travel, February is usually the cheapest month to fly from Denver DEN to Ontario ONT. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 

 

Book flexible airline tickets for flights to Ontario ONT from Denver DEN 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to ONT from DEN have this option.  

 

Travel with confidence when you book flights to Ontario ONT from Denver DEN with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*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.