₹9,531 Cheap Flights from Ontario (ONT) to Denver (DEN)

View ₹9,531 flight on Wed, 8 Oct 2025Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Denver International Airport (DEN)

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Cheap Flights from Ontario (ONT) to Denver (DEN)

Prices were available within the past 7 days and start at ₹9,531 for one-way flights and ₹19,061 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 8 Oct - Fri, 17 Oct
ONT
Ontario
DEN
Denver
₹19,061 Return, found 23 hours ago
₹19,061
Return
found 23 hours ago
Select Delta flight, departing Wed, 8 Oct from Ontario to Denver, returning Fri, 17 Oct, priced at ₹19,061 found 23 hours ago
United
Wed, 8 Oct - Fri, 17 Oct
ONT
Ontario
DEN
Denver
₹19,529 Return, found 23 hours ago
₹19,529
Return
found 23 hours ago
Select United flight, departing Wed, 8 Oct from Ontario to Denver, returning Fri, 17 Oct, priced at ₹19,529 found 23 hours ago
Delta
Wed, 8 Oct - Fri, 17 Oct
ONT
Ontario
DEN
Denver
₹20,824 Return, found 23 hours ago
₹20,824
Return
found 23 hours ago
Select Delta flight, departing Wed, 8 Oct from Ontario to Denver, returning Fri, 17 Oct, priced at ₹20,824 found 23 hours ago
American Airlines
Wed, 8 Oct - Fri, 17 Oct
ONT
Ontario
DEN
Denver
₹20,825 Return, found 23 hours ago
₹20,825
Return
found 23 hours ago
Select American Airlines flight, departing Wed, 8 Oct from Ontario to Denver, returning Fri, 17 Oct, priced at ₹20,825 found 23 hours ago
Delta
Wed, 8 Oct - Fri, 17 Oct
ONT
Ontario
DEN
Denver
₹21,292 Return, found 23 hours ago
₹21,292
Return
found 23 hours ago
Select Delta flight, departing Wed, 8 Oct from Ontario to Denver, returning Fri, 17 Oct, priced at ₹21,292 found 23 hours ago
United
Wed, 8 Oct - Fri, 17 Oct
ONT
Ontario
DEN
Denver
₹21,758 Return, found 23 hours ago
₹21,758
Return
found 23 hours ago
Select United flight, departing Wed, 8 Oct from Ontario to Denver, returning Fri, 17 Oct, priced at ₹21,758 found 23 hours ago
Delta
Wed, 8 Oct - Fri, 17 Oct
ONT
Ontario
DEN
Denver
₹23,055 Return, found 23 hours ago
₹23,055
Return
found 23 hours ago
Select Delta flight, departing Wed, 8 Oct from Ontario to Denver, returning Fri, 17 Oct, priced at ₹23,055 found 23 hours ago
Delta
Wed, 8 Oct - Fri, 17 Oct
ONT
Ontario
DEN
Denver
₹23,931 Return, found 23 hours ago
₹23,931
Return
found 23 hours ago
Select Delta flight, departing Wed, 8 Oct from Ontario to Denver, returning Fri, 17 Oct, priced at ₹23,931 found 23 hours ago
United
Wed, 8 Oct - Fri, 17 Oct
ONT
Ontario
DEN
Denver
₹24,397 Return, found 23 hours ago
₹24,397
Return
found 23 hours ago
Select United flight, departing Wed, 8 Oct from Ontario to Denver, returning Fri, 17 Oct, priced at ₹24,397 found 23 hours ago
Delta
Wed, 8 Oct - Fri, 17 Oct
ONT
Ontario
DEN
Denver
₹24,436 Return, found 23 hours ago
₹24,436
Return
found 23 hours ago
Select Delta flight, departing Wed, 8 Oct from Ontario to Denver, returning Fri, 17 Oct, priced at ₹24,436 found 23 hours ago

Find the cheapest month to fly from Ontario (ONT) to Denver (DEN)

April is typically the cheapest month to fly

From ₹4,214 - ₹34,996 per traveller.
Flight from Ontario to Denver route information
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Denver Intl.
Airlines serving
American Airlines, Delta, United
Return price
₹19,061
Distance
1306 km
Average flight time
3 hours 16 mins

Los Angeles to Denver Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Los Angeles to Denver will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring Denver.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with ONT to DEN flights that won’t make your bank account wince. Ready to temporarily leave behind Los Angeles for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to DEN with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Frequently asked questions

How much is a flight from Los Angeles - Ontario Intl. Airport (ONT) to DIA airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price listed for a round-trip journey from ONT to DIA airport was ₹19,061. Cheap tickets don't hang around forever, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Ontario Airport to Denver Intl. Airport (DEN)?
Every air carrier has its own set of terms and conditions. If you do decide to cancel, follow the simple instructions on our Customer Service Portal.
How do I find cheap flights from Ontario Airport to DIA airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for ONT to Denver Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Los Angeles - Ontario Intl. Airport (ONT) to Denver Intl. Airport (DEN)?
Forget about a movie marathon on this flight — it's just 1,300 kilometres from Ontario to Denver. Find your seat, enjoy the in-flight service and you'll be touching down in no time.
Which airlines fly direct from Ontario Airport to DEN?
There are a few airlines that travel directly from Los Angeles - Ontario Intl. Airport (ONT) to Denver Intl. Airport (DEN). Southwest Airlines (WN) is a top choice, offering 117 flights on this route each month. Frontier Airlines (F9) is another popular choice. It operates 60 flights per month. Between these two airlines, you'll be able to find a great deal from Ontario to Denver.
Are Los Angeles - Ontario Intl. Airport (ONT) to DEN flight tickets cheaper when they're purchased at the last minute?
Flight prices go up and down like a yo-yo, so not always. While last-minute flight deals between Los Angeles - Ontario Intl. Airport (ONT) and Denver Intl. Airport (DEN) are of course possible, it also makes sense to keep an eye on prices well before you fly. In fact, some airlines publish their prices up to a year before the departure date. Expedia is continuously updating the biggest airfare bargains around, so keep checking and be ready to pounce when the price dips.

Explore a world of travel with Expedia

Ontario Airports

Los Angeles

Los Angeles Intl. to Denver
₹13,830.00

Orange County

John Wayne to Denver
₹21,642.00
*Available to Expedia members.