$52 Cheap flights from Los Angeles - Ontario Intl. to Denver Intl. (ONT to DEN)

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

Compare Flight Prices from Ontario to Denver

Affordable Airfare Tickets from ONT to DEN Airport

The cheapest flights to Denver Intl. found within the past 7 days were $106 round trip and $52 one way. Prices and availability subject to change. Additional terms may apply.

Tue, Oct 14 - Tue, Oct 21
ONT
Ontario
DEN
Denver
$106 Roundtrip, found 9 hours ago
$106
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Tue, Oct 14 from Ontario to Denver, returning Tue, Oct 21, priced at $106 found 9 hours ago
Tue, Oct 14 - Wed, Oct 22
ONT
Ontario
DEN
Denver
$107 Roundtrip, found 5 days ago
$107
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Tue, Oct 14 from Ontario to Denver, returning Wed, Oct 22, priced at $107 found 5 days ago
Sat, Nov 15 - Wed, Nov 19
ONT
Ontario
DEN
Denver
$109 Roundtrip, found 18 hours ago
$109
Roundtrip
found 18 hours ago
Select Frontier Airlines flight, departing Sat, Nov 15 from Ontario to Denver, returning Wed, Nov 19, priced at $109 found 18 hours ago
Sat, Jan 17 - Sat, Jan 24
ONT
Ontario
DEN
Denver
$109 Roundtrip, found 5 days ago
$109
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Sat, Jan 17 from Ontario to Denver, returning Sat, Jan 24, priced at $109 found 5 days ago
Sat, Nov 1 - Mon, Nov 3
ONT
Ontario
DEN
Denver
$112 Roundtrip, found 1 hour ago
$112
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sat, Nov 1 from Ontario to Denver, returning Mon, Nov 3, priced at $112 found 1 hour ago
Thu, Jan 15 - Sat, Jan 24
ONT
Ontario
DEN
Denver
$114 Roundtrip, found 5 days ago
$114
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Thu, Jan 15 from Ontario to Denver, returning Sat, Jan 24, priced at $114 found 5 days ago
Tue, Jan 6 - Sat, Jan 10
ONT
Ontario
DEN
Denver
$116 Roundtrip, found 22 hours ago
$116
Roundtrip
found 22 hours ago
Select Frontier Airlines flight, departing Tue, Jan 6 from Ontario to Denver, returning Sat, Jan 10, priced at $116 found 22 hours ago
Thu, Dec 4 - Mon, Dec 8
ONT
Ontario
DEN
Denver
$117 Roundtrip, found 11 hours ago
$117
Roundtrip
found 11 hours ago
Select Frontier Airlines flight, departing Thu, Dec 4 from Ontario to Denver, returning Mon, Dec 8, priced at $117 found 11 hours ago
Thu, Dec 11 - Sat, Jan 10
ONT
Ontario
DEN
Denver
$118 Roundtrip, found 5 days ago
$118
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Thu, Dec 11 from Ontario to Denver, returning Sat, Jan 10, priced at $118 found 5 days ago
Tue, Nov 18 - Thu, Nov 20
ONT
Ontario
DEN
Denver
$119 Roundtrip, just found
$119
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Nov 18 from Ontario to Denver, returning Thu, Nov 20, priced at $119 just found

Denver Intl. flight + hotel packages - economy flights

Price found within the past 48 hours. Click for updated prices.
Spark by Hilton Denver International Airport

Spark by Hilton Denver International Airport

3.5 out of 5
Price was $270, price is now $217 per person
$217
per person
Nov 7 - Nov 9
found 1 day ago
Roundtrip non-stop flight included
Ontario (ONT) to Denver (DEN)
Sonesta Denver Downtown

Sonesta Denver Downtown

4 out of 5
Price was $520, price is now $410 per person
$410
per person
Nov 19 - Nov 21
found 1 day ago
Roundtrip flight included
Ontario (ONT) to Denver (DEN)
Renaissance Denver Hotel & Conference Center

Renaissance Denver Hotel & Conference Center

4 out of 5
Price was $411, price is now $326 per person
$326
per person
Nov 19 - Nov 21
found 1 day ago
Roundtrip flight included
Ontario (ONT) to Denver (DEN)
Hampton Inn Boulder - Louisville

Hampton Inn Boulder - Louisville

2.5 out of 5
Price was $403, price is now $328 per person
$328
per person
Nov 20 - Nov 22
found 1 day ago
Roundtrip flight included
Ontario (ONT) to Denver (DEN)
Candlewood Suites Denver Northeast - Brighton by IHG

Candlewood Suites Denver Northeast - Brighton by IHG

2.5 out of 5
Price was $285, price is now $232 per person
$232
per person
Nov 7 - Nov 9
found 1 day ago
Roundtrip non-stop flight included
Ontario (ONT) to Denver (DEN)
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Frequently asked questions

Are there direct flights from ONT to Denver Airport?
Sometimes, it's the journey that counts; sometimes the magic is in the destination. If you're keen to get to your destination fast, multiple airlines operate direct flights from Ontario Airport to Denver Airport, including Southwest Airlines and United Airlines.
How long is the flight from Los Angeles - Ontario Intl. Airport (ONT) to DEN?
You'll have just enough time to breeze through a couple chapters in that gripping novel as the journey from ONT to Denver Airport is only 2 hours and 16 minutes. You could find yourself left on a cliffhanger!
What is the flight distance from Los Angeles - Ontario Intl. Airport (ONT) to Denver Airport?
With a flight distance of only 820 mi, a magazine or two or a few episodes of your favorite TV show is all you'll need to keep yourself entertained on the journey between ONT and Denver Airport. You'll be hopping off the plane and diving into your fun adventures before long.
What airlines fly from ONT to Denver Intl. Airport (DEN)?
There are a few airlines advertising direct flights from Los Angeles - Ontario Intl. Airport (ONT) to Denver Airport. Southwest Airlines (WN) is among the best of them, operating at least 86 flights each month. You may want to also look into the deals on offer from United Airlines (UA). Another leading airline, it operates 60 flights every month on the Ontario to Denver route. Compare the two to score the best fare.
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.

Flight information from Ontario to Denver

 

Traveling From
Los Angeles - Ontario Intl.
Traveling To
Denver Intl.
Shortest Flight Time
 hours mins
Earliest Departure Time
Latest Departure Time
Lowest Flight Price
$106

Route Info

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


Origin:
ONT - LA/Ontario International Airport
Destination:
DEN - Denver International Airport
Distance:
931.00 miles


Airlines & Aircraft Used on ONT to DEN Flight Routes


Airline Carrier
Aircraft
American Airlines
Airbus A320-100/200

Discover our best flights from Ontario ONT to Denver DEN. 

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 Ontario ONT to Denver DEN at the right price  

Airfares to Denver DEN from Ontario ONT currently cost between $106 and $119. 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 Ontario ONT to Denver DEN 

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 Ontario ONT to Denver DEN on Travelocity starting at $52. Prices and availability subject to change. Additional terms may apply. 

 

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

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

 

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

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to DEN from ONT. 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 Ontario ONT to Denver DEN today 

If you’re flexible about when you travel, October is usually the cheapest month to fly from Ontario ONT to Denver DEN. 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 Denver DEN from Ontario ONT 

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

 

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

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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.