$28 Cheap flight deals from Riverside (QLA) to Denver (DEN)

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This Weekend's Flight Deals from Riverside to Denver

This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, May 24 - Sat, May 30
SNA
John Wayne
DEN
Denver Intl.
$250 Roundtrip, found 21 hours ago
$250
Roundtrip
found 21 hours ago
Select Frontier Airlines flight, departing Sun, May 24 from John Wayne to Denver Intl., returning Sat, May 30, priced at $250 found 21 hours ago
Sun, May 24 - Sat, May 30
ONT
Ontario Intl. Airport
DEN
Denver Intl.
$308 Roundtrip, found 3 days ago
$308
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Sun, May 24 from Ontario Intl. Airport to Denver Intl., returning Sat, May 30, priced at $308 found 3 days ago
Sat, May 23 - Fri, May 29
LGB
Long Beach Municipal
DEN
Denver Intl.
$394 Roundtrip, found 2 days ago
$394
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Sat, May 23 from Long Beach Municipal to Denver Intl., returning Fri, May 29, priced at $394 found 2 days ago
Fri, May 22 - Sat, May 23
PSP
Palm Springs Intl.
DEN
Denver Intl.
$755 Roundtrip, found 5 days ago
$755
Roundtrip
found 5 days ago
Select Bargain Flight flight, departing Fri, May 22 from Palm Springs Intl. to Denver Intl., returning Sat, May 23, priced at $755 found 5 days ago

Airfares from $28 One Way, $56 Round Trip from Riverside to Denver

Prices starting at $56 for return flights and $28 for one-way flights to Denver were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Aug 18 - Wed, Aug 19
ONT
Ontario
DEN
Denver
$56 Roundtrip, found 15 hours ago
$56
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Tue, Aug 18 from Ontario to Denver, returning Wed, Aug 19, priced at $56 found 15 hours ago
Thu, Aug 27 - Mon, Aug 31
SNA
Orange County
DEN
Denver
$82 Roundtrip, found 21 hours ago
$82
Roundtrip
found 21 hours ago
Select Frontier Airlines flight, departing Thu, Aug 27 from Orange County to Denver, returning Mon, Aug 31, priced at $82 found 21 hours ago
Wed, Jul 15 - Tue, Jul 21
ONT
Ontario
DEN
Denver
$117 Roundtrip, found 4 days ago
$117
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Wed, Jul 15 from Ontario to Denver, returning Tue, Jul 21, priced at $117 found 4 days ago
Tue, Jul 28 - Thu, Aug 13
ONT
Ontario
DEN
Denver
$157 Roundtrip, found 4 days ago
$157
Roundtrip
found 4 days ago
Select United flight, departing Tue, Jul 28 from Ontario to Denver, returning Thu, Aug 13, priced at $157 found 4 days ago
Tue, Aug 4 - Wed, Aug 5
ONT
Ontario
COS
Colorado Springs
$197 Roundtrip, found 11 hours ago
$197
Roundtrip
found 11 hours ago
Select Southwest Airlines flight, departing Tue, Aug 4 from Ontario to Colorado Springs, returning Wed, Aug 5, priced at $197 found 11 hours ago

Denver economy flight packages

Price found within the past 48 hours. Click for updated prices.
Summit Villa BnB
3.0-star property

Summit Villa BnB

9.6/10 Exceptional! (124 reviews)

Jul 9 - Jul 12

3 night stay

Ontario Intl. Airport (ONT) to Denver (DEN)

Frontier Airlines • Non-stop roundtrip • Coach
Price was $467, price is now $333 per person
$333
per person
found 22 hours ago
We enjoyed our stay! Ken was very accommodating. We enjoyed the garden room and breakfast. It’s very close to the airport also! He has a hot tub you can dip in and watch the sunset. It was gorgeous out there.

Reviewed on Jun 24, 2023

Patterson Inn
3.5-star property

Patterson Inn

9.6/10 Exceptional! (782 reviews)

Jul 9 - Jul 12

3 night stay

Ontario Intl. Airport (ONT) to Denver (DEN)

Frontier Airlines • Non-stop roundtrip • Coach
Save 100% on your flight
Price was $808, price is now $567 per person
$567
per person
found 21 hours ago
Great breakfast, close to a lot restaurants and conference center, comfortable bed. Would stay again

Reviewed on Sep 28, 2025

the Curtis Denver - a DoubleTree by Hilton Hotel
4.0-star property

the Curtis Denver - a DoubleTree by Hilton Hotel

8.8/10 Excellent! (1,348 reviews)

Jul 9 - Jul 12

3 night stay

Ontario Intl. Airport (ONT) to Denver (DEN)

Frontier Airlines • Non-stop roundtrip • Coach
Price was $616, price is now $470 per person
$470
per person
found 22 hours ago
Great location and cool design with different floors representing different themes. Free coffee in the morning. Sam’s number three next-door, which is a great local restaurant, famous from the tv show Diners Drive ins and Dives.

Reviewed on Jul 2, 2025

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More About Flying To Denver from Riverside

Route Information for Flights from Riverside to Denver

Origin Airport IATA Code
QLA
Destination Airport IATA Code
DEN
Distance
Direct Flight Airlines
Earliest Flight Arrival
Latest Flight Arrival

Riverside to Denver

Orbitz combines guaranteed low prices with cutting-edge mobile tools for travel from Riverside to Denver to give you a travel experience that is second to none.

Bargain Travel at Your Fingertips

Orbitz provides the cheapest fares from Riverside to Denver. When reserving your flight you can mix and match a range of low cost airlines for you departing and returning domestic or international flights. This way you can travel on a budget while selecting the flights that suit your schedule.

Modern Tools for Fast-Paced Travel

Orbitz makes use of the latest technology to ensure that you are always kept up-to-date on the status of your Riverside to Denver flights. Through easy-to-use mobile Android and iPhone apps you can book low cost flights from Riverside to Denver and choose a range of cheap hotels to stay in.

Enjoy Stress-Free Travel with Flight Alerts

Once you have booked your flights from Riverside to Denver on Orbitz you will always be kept informed of any changes to your flight. When you opt into Orbitz’s free email and SMS alerts on your Riverside to Denver flights you can ask Orbitz to send the flight details to up to 6 other contacts, so keeping your family and business team informed is a cinch.

Frequent Flyer Program

For loyal Orbitz customers who fly from Riverside to Denver the chance to join our frequent flyer program is an added bonus. Simply log-on to your online account and input your frequent flyer number for future flights.

Frequently asked questions

Are there non-stop flights from Riverside to Denver?
Yes, a direct flight from LAX to Denver, CO (DEN-Denver Intl.) is possible. No less than 6 airlines run nonstop services on this route, which means you'll be able to go with the one that works well with your travel plans. Check out the fares with these well-known carriers:

  • United Airlines
  • Southwest Airlines
  • Delta
  • American Airlines
  • Spirit Airlines

What is the shortest flight from Riverside to Denver?
If the weather is good and everything goes to plan, you could be stepping off the plane at COS from Los Angeles, CA (LAX-Los Angeles Intl.) in as little as 2 hours and 50 minutes. With such a fast flight time, consider taking carry-on luggage only.
What airlines fly from Riverside to Denver most frequently?
There are multiple airlines to choose from when flying between Riverside to Denver. The following carriers travel this route most frequently. United Airlines - (UA) with 234 flights every month Southwest Airlines - (WN) with 156 flights every month Delta - (DL) with 121 flights every month American Airlines - (AA) with 91 flights every month Spirit Airlines - (NK) with 30 flights every month Frontier Airlines - (F9) with 4 flights every month
What is the cheapest day of the week to fly?
Consider flying out early in the week to save on your airfare. Orbitz data from 2021 shows that Monday is the cheapest day to depart, followed by Tuesday. Saturday showed the highest average ticket prices likely because many travelers prefer to start their vacation on a weekend.
What is the cheapest month to fly?
We won't keep you guessing, according to Orbitz data from 2021, the cheapest month to fly is February. Perfect for those who need a weekend getaway, or just a break from it all in the shortest month of the year. Be aware that the most expensive time to fly is during the height of summer in July, and in the holiday month of December.*According to flight demand on Orbitz.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

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Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.