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$64+ Cheap flights from Peoria, IL to Denver (PIA - DEN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — DEN
Nov 22 — Nov 291
Sat 11/22
Sat 11/29
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Greater Peoria to Denver Intl are usually found in January or February, booked 55 days in advance, depart on a Friday or Monday and return on a Friday

Cheap flight deals from Peoria to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Peoria (PIA) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$122
(Booking.com)

One-way from

$64
(Cheapflightsfares)

Popular in

July

Cheapest in

January

Average price

$223

Good round-trip deal

$259 or less

Good one-way deal

$174 or less
Provider with most accurate pricing for Greater Peoria-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Greater Peoria-Denver Intl flights.
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From Greater Peoria to Denver Intl
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One-way flight from Greater Peoria to Denver Intl
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Highest demand for flights based on searches. 16% potential increase in price ($49 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Greater Peoria to Denver Intl.
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Price to beat on a one-way flight from Greater Peoria to Denver Intl.
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Find flight deals from Peoria to Denver

Cheapest flights from Peoria to Denver
Explore the most affordable flight options available from Peoria to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2025.

This Booking.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/53:08 pmPIA - DEN
Nonstop2h 26mAllegiant Air
Fri 12/125:24 pmDEN - PIA
Nonstop1h 57mAllegiant Air
Deal found 10/22$122
This Mytrip deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/279:59 amPIA - DEN
Nonstop2h 16mAllegiant Air
Fri 10/316:35 pmDEN - PIA
Nonstop1h 51mAllegiant Air
Deal found 10/22$125
This Gotogate deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/314:29 pmPIA - DEN
Nonstop2h 16mAllegiant Air
Mon 11/312:05 pmDEN - PIA
Nonstop1h 51mAllegiant Air
Deal found 10/23$134
This Mytrip deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/123:08 pmPIA - DEN
Nonstop2h 26mAllegiant Air
Mon 12/155:24 pmDEN - PIA
Nonstop1h 57mAllegiant Air
Deal found 10/23$137
This Cheapflightsfares deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/53:08 pmPIA - DEN
Nonstop2h 26mAllegiant Air
Mon 12/85:24 pmDEN - PIA
Nonstop1h 57mAllegiant Air
Deal found 10/21$141
This Booking.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1712:09 pmPIA - DEN
Nonstop2h 25mAllegiant Air
Fri 11/215:47 pmDEN - PIA
Nonstop2h 00mAllegiant Air
Deal found 10/22$158

Cheapflights Fare Finder

 
Customize your flight search to find flights from Peoria to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 23, 2025.
Use the filters below to find and compare flights from Peoria to Denver that are best for you.

Fly from

Peoria

Fly to

Denver

Route

Depart

Return

Price

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Fri 12/12

3:08 pm-4:34 pm

Nonstop2h 26m

Denver Intl

Mon 12/15

5:24 pm-8:21 pm

Nonstop1h 57m

$123

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Fri 12/12

8:40 am-10:32 am

Nonstop2h 52m

Denver Intl

Tue 12/16

5:45 pm-8:56 pm

Nonstop2h 11m

$209

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Fri 12/5

9:41 pm-9:04 am

1 stop12h 23m

Denver Intl

Fri 12/12

5:24 pm-8:21 pm

Nonstop1h 57m

$219

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Fri 12/5

8:40 am-10:32 am

Nonstop2h 52m

Denver Intl

Tue 12/9

4:10 pm-9:31 pm

1 stop4h 21m

$219

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Fri 12/5

9:41 pm-3:58 am

1 stop7h 17m

Denver Intl

Mon 12/8

5:24 pm-8:21 pm

Nonstop1h 57m

$219

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Mon 11/24

8:43 am-10:35 am

Nonstop2h 52m

Denver Intl

Fri 11/28

7:46 am-2:33 pm

1 stop5h 47m

$219

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Sun 1/25

8:35 am-10:20 am

Nonstop2h 45m

Denver Intl

Sun 2/1

6:00 am-12:38 pm

1 stop5h 38m

$219

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Thu 11/13

8:43 am-10:35 am

Nonstop2h 52m

Denver Intl

Sun 11/16

6:00 am-12:39 pm

1 stop5h 39m

$219

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Wed 11/5

8:43 am-10:35 am

Nonstop2h 52m

Denver Intl

Sat 11/8

5:45 pm-8:56 pm

Nonstop2h 11m

$229

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Thu 11/6

10:51 am-2:50 pm

1 stop4h 59m

Denver Intl

Mon 11/10

6:00 am-12:39 pm

1 stop5h 39m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/23

Showing 1-10 of 20 results
1
2

Compare providers for flights from Peoria to Denver

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Peoria to Denver in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Peoria, Illinois-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Peoria, Illinois-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Peoria, Illinois-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Peoria, Illinois-Denver flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Peoria, Illinois-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Peoria to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Peoria with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Peoria to Denver

How far ahead should I book a flight from Peoria, Illinois to Denver?

Use this chart to determine the optimal time to book a round-trip flight from Peoria to Denver. Price data was last updated on October 17, 2025.

To ensure you get the cheapest price possible for a flight from Peoria, Illinois to Denver, you should look to book at least 54 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Peoria, Illinois to Denver?

Currently, September is the cheapest month in which you can book a flight from Peoria, Illinois to Denver (average of $49). Flying from Peoria, Illinois to Denver in March is currently the most expensive (average of $165). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PIA to DEN?

Find hourly flight availability from Peoria to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 23, 2025.

When flying from Peoria, Illinois to Denver, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated October 23, 2025.
Read reviews from past customers who have flown United Airlines, American Airlines, and Allegiant Air from Peoria to Denver. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,991 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.
United Airlines
7.4
Good
8,991 reviews
United Airlines
7.4
Good
8,991 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.
American Airlines
7.2
Good
11,028 reviews
United Airlines
7.4
Good
8,991 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.
Allegiant Air
7.2
Good
694 reviews
United Airlines
7.4
Good
8,991 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.

Related info for your journey

Find useful and relevant information for your journey from Peoria to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Peoria, Illinois to Denver flight route?

    Within the past month, 12 users have taken a look at flights from Greater Peoria to Denver Intl.

  • How long is the flight from Peoria, Illinois to Denver?

    Airlines like Allegiant Air and United Airlines fly from Peoria, Illinois to Denver in about 2h 26m. The time it takes to get you to your destination is usually consistent. The distance between Peoria, Illinois and Denver is about 790 mi. Most flights are nonstop.

  • What are the cheapest airlines flying from Peoria, Illinois to Denver round-trip?

    Flying on Allegiant Air is currently your cheapest option to Denver, with prices starting at $77. Additional round-trip tickets that might be worth considering are offered by United Airlines and American Airlines, with the lowest prices starting at $219 and $228, respectively. These flights start at 68% lower than the current average price 3 months from now.

  • What are the most reliable airlines from Peoria, Illinois to Denver?

    No one likes to see their flight delayed. When booking a flight from Peoria, Illinois to Denver consider choosing Allegiant Air (91%), SkyWest Airlines (84%) or United Airlines (84%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Peoria, Illinois to Denver?

    Looking for the cheapest flight from Peoria, Illinois to Denver? While on average our users pay $324, our data indicates the cheapest price to be $78. The most popular route (Greater Peoria - Denver Intl), is priced around $125.

  • Can I find deals for flights from Peoria to Denver that include hotel bookings?

    Yes. In addition to deals on Peoria to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Peoria to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Peoria to Denver.

  • Can I find deals for business class flights from Peoria to Denver?

    Yes. Cheapflights offers flight deals from Peoria to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Peoria, Illinois to Denver?

    Currently, September is the cheapest month in which you can book a flight from Peoria, Illinois to Denver (average of $49). Flying from Peoria, Illinois to Denver in March is currently the most expensive (average of $165). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Black Hawk
Westminster
Broomfield
Lakewood
Golden
Winter Park
Greeley
Lone Tree
Cripple Creek
Thornton
Silverthorne
Central City
Manitou Springs
Fort Morgan
Wheat Ridge
Brighton
Longmont
Idaho Springs
Parker
Sterling

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Top 3 airlines flying from Peoria to Denver

Discover the top 3 airlines that operate flights from Peoria to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$77Average$140FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$219Average$359FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$228Average$303FlexibilityNo cancel feeOn-time71%

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