HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Colorado

$113+ Cheap flights from Peoria, IL (PIA) to Colorado

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/25. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — DEN
May 23 — May 301
Sat 5/23
Sat 5/30
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Peoria to Colorado with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Peoria to Colorado

Cheapest flights from Peoria to Colorado
Explore the most affordable flight options available from Peoria to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 23, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 4/20. 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.
Sun 10/255:24 pm
PIA
-
DEN
Nonstop2h 20m
Allegiant Air
Thu 10/2910:20 am
DEN
-
PIA
Nonstop1h 59m
Allegiant Air
Deal found 4/20$113
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/610:07 am
PIA
-
DEN
Nonstop2h 20m
Allegiant Air
Thu 9/102:16 pm
DEN
-
PIA
Nonstop2h 03m
Allegiant Air
Deal found 4/19$201
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/610:07 am
PIA
-
DEN
Nonstop2h 20m
Allegiant Air
Sun 9/62:26 pm
DEN
-
PIA
Nonstop2h 03m
Allegiant Air
Deal found 4/19$225
This Cheapflightsfares deal was found by Cheapflights users on 4/19. 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.
Thu 5/215:13 pm
PIA
-
DEN
Nonstop2h 23m
Allegiant Air
Sun 5/244:27 pm
DEN
-
PIA
Nonstop2h 03m
Allegiant Air
Deal found 4/19$240
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/2611:07 am
PIA
-
DEN
Nonstop2h 23m
Allegiant Air
Thu 7/304:24 pm
DEN
-
PIA
Nonstop2h 10m
Allegiant Air
Deal found 4/22$246
This Cheapflightsfares deal was found by Cheapflights users on 4/18. 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.
Thu 5/285:13 pm
PIA
-
DEN
Nonstop2h 23m
Allegiant Air
Sun 6/74:24 pm
DEN
-
PIA
Nonstop2h 06m
Allegiant Air
Deal found 4/18$251
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:23 pm
PIA
-
DEN
Nonstop2h 25m
Multiple Airlines
Sat 8/1510:36 pm
DEN
-
PIA
1 stop20h 52m
Multiple Airlines
Deal found 4/22$256
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/310:07 am
PIA
-
DEN
Nonstop2h 20m
Allegiant Air
Thu 9/102:16 pm
DEN
-
PIA
Nonstop2h 03m
Allegiant Air
Deal found 4/19$267
This United Airlines deal was found by Cheapflights users on 4/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/248:45 am
PIA
-
DEN
Nonstop2h 39m
United Airlines
Tue 6/25:33 pm
DEN
-
PIA
Nonstop2h 28m
United Airlines
Deal found 4/20$269
This Cheapflightsfares deal was found by Cheapflights users on 4/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/511:07 am
PIA
-
DEN
Nonstop2h 23m
Allegiant Air
Sun 7/124:24 pm
DEN
-
PIA
Nonstop2h 10m
Allegiant Air
Deal found 4/22$277
This American Airlines deal was found by Cheapflights users on 4/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/114:43 pm
PIA
-
COS
1 stop7h 10m
American Airlines
Tue 8/183:51 pm
COS
-
PIA
1 stop6h 28m
American Airlines
Deal found 4/18$329
This United Airlines deal was found by Cheapflights users on 4/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:30 am
PIA
-
COS
1 stop5h 17m
United Airlines
Sun 5/246:00 am
COS
-
PIA
2 stops6h 57m
United Airlines
Deal found 4/19$334

Find flight deals from Peoria to Colorado

Keep the following information in mind while searching for Peoria to Colorado flight deals. Data was last updated April 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$201
(Kiwi.com)

One-way from

$179
(Kiwi.com)

Popular in

March

Cheapest in

October

Average price

$373

Good round-trip deal

$324 or less

Good one-way deal

$323 or less
Provider with most accurate pricing for Greater Peoria-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Greater Peoria-Denver Intl flights.
Search Deals
From Greater Peoria to Colorado
Search Deals
One-way flight from Greater Peoria to Colorado
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($66 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from Greater Peoria to Colorado.
Search Deals
Price to beat on a one-way flight from Greater Peoria to Colorado.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Peoria to Colorado 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 April 23, 2026.
Use the filters below to find and compare flights from Peoria to Colorado that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Tue 6/2

5:33 pm-9:59 pm

1 stop5h 26m

Denver Intl

Sun 6/7

5:33 pm-9:01 pm

Nonstop2h 28m

$299

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Thu 7/16

8:20 pm-12:59 am

1 stop5h 39m

Denver Intl

Mon 7/20

6:00 pm-12:35 am

1 stop5h 35m

$348
Quickest round-trip

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Thu 6/11

8:45 am-10:24 am

Nonstop2h 39m

Denver Intl

Tue 6/16

5:33 pm-9:01 pm

Nonstop2h 28m

$354

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Thu 6/25

8:45 am-10:24 am

Nonstop2h 39m

Denver Intl

Mon 6/29

6:00 pm-12:35 am

1 stop5h 35m

$359

PeoriaColorado Springs

PIA - COS

PIACOS

Greater Peoria

Sat 5/16

6:30 am-10:47 am

1 stop5h 17m

Colorado Springs

Sun 5/24

12:56 pm-9:01 pm

1 stop7h 05m

$362

PeoriaColorado Springs

PIA - COS

PIACOS

Greater Peoria

Thu 5/7

6:30 am-10:47 am

1 stop5h 17m

Colorado Springs

Tue 5/19

1:25 pm-10:49 pm

2 stops8h 24m

$366

PeoriaColorado Springs

PIA - COS

PIACOS

Greater Peoria

Sat 5/2

1:35 pm-6:19 pm

1 stop5h 44m

Colorado Springs

Sat 5/9

1:25 pm-9:19 pm

1 stop6h 54m

$379

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Fri 7/24

8:20 pm-12:58 am

1 stop5h 38m

Denver Intl

Fri 7/31

4:20 pm-12:35 am

1 stop7h 15m

$389

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Fri 7/31

8:20 pm-12:58 am

1 stop5h 38m

Denver Intl

Fri 8/7

6:00 pm-12:35 am

1 stop5h 35m

$389

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Thu 5/7

5:30 pm-11:50 pm

1 stop7h 20m

Denver Intl

Sun 5/10

5:55 pm-9:19 pm

Nonstop2h 24m

$399

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 38 resultsSorted by cheapest first
1
2
3
4

Best time to book a flight from Peoria to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado 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 Colorado

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

Currently, September is the cheapest month in which you can book a flight from Peoria, Illinois to Colorado (average of $45). Flying from Peoria, Illinois to Colorado in February is currently the most expensive (average of $248). 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 CO?

Find hourly flight availability from Peoria to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 23, 2026.

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

Weekly flight availability from Peoria, Illinois to Colorado

Explore weekly flight availability from Peoria to Colorado. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 23, 2026.

The most flights from PIA to USCO are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

How much does it cost to fly round-trip from Peoria, Illinois to Colorado?

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated April 23, 2026.
See what other customers who have flown with United Airlines,Allegiant Air, andAmerican Airlines from Peoria to Colorado have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,635 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

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
9,635 reviews
United Airlines
7.4
Good
9,635 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

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
7.3
Good
707 reviews
United Airlines
7.4
Good
9,635 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

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
7.1
Good
11,659 reviews
United Airlines
7.4
Good
9,635 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

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 Colorado. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Peoria to Colorado?

    Most people fly from Greater Peoria (PIA) if they book a flight from Peoria to Colorado. Greater Peoria is conveniently located just 6.0 mi from Peoria’s city center.

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

    This flight path from Greater Peoria to Colorado was viewed by 14 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Departing from Peoria, Illinois to Colorado will take you 5h 26m. Peoria, Illinois and Colorado are separated by a distance of 790 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Peoria, Illinois to Colorado one-way?

    The cheapest airline one-way is Allegiant Air, with whom users have recently found tickets for as low as $74. However, be on the lookout for offers from American Airlines and United Airlines, as they are both options that can get you from Peoria, Illinois to Colorado for a low price.

  • What are the most popular routes from Peoria, Illinois to Colorado?

    Most travelers choose Greater Peoria - Denver Intl, Greater Peoria - Grand Junction Regnl or Greater Peoria - Colorado Springs when deciding on the best route from Peoria, Illinois to Colorado.

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

    While on average a flight from Peoria, Illinois to Colorado is generally $411, our data shows the cheapest flight currently is $241. When looking at the most popular route, (Greater Peoria - Denver Intl), you can expect to pay $113 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Peoria to Colorado 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 Colorado?

    Currently, September is the cheapest month in which you can book a flight from Peoria, Illinois to Colorado (average of $45). Flying from Peoria, Illinois to Colorado in February is currently the most expensive (average of $248). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Peoria to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Las Vegas flights
O'Hare Intl to Dallas/Fort Worth flights
O'Hare Intl to Seattle flights
O'Hare Intl to John F Kennedy Intl flights
O'Hare Intl to Newark flights
O'Hare Intl to Denver flights
O'Hare Intl to LaGuardia flights
O'Hare Intl to Orlando flights
O'Hare Intl to Los Angeles flights
O'Hare Intl to San Francisco flights
Midway to Dallas/Fort Worth flights
O'Hare Intl to Sky Harbor Intl flights
Midway to Newark flights
O'Hare Intl to Miami flights
O'Hare Intl to Boston flights
O'Hare Intl to Fort Lauderdale flights
O'Hare Intl to San Diego flights
Midway to Las Vegas flights
O'Hare Intl to Baltimore flights
O'Hare Intl to Dulles Intl flights
O'Hare Intl to Nashville flights
O'Hare Intl to Philadelphia flights
O'Hare Intl to Atlanta flights
O'Hare Intl to Ontario flights
O'Hare Intl to Reagan-National flights
Midway to Los Angeles flights
Midway to Miami flights
Midway to Orlando flights
Midway to John F Kennedy Intl flights
Midway to Atlanta flights
O'Hare Intl to Fort Myers flights
O'Hare Intl to Hobby flights
O'Hare Intl to New Orleans flights
O'Hare Intl to Tampa flights
Midway to Fort Lauderdale flights
O'Hare Intl to George Bush Intcntl flights
O'Hare Intl to Austin flights
St. Louis to Las Vegas flights
O'Hare Intl to Charleston flights
St. Louis to Orlando flights
O'Hare Intl to Raleigh flights
Midway to Hobby flights
St. Louis to Denver flights
Midway to LaGuardia flights
St. Louis to Seattle flights
O'Hare Intl to Love Field flights
Midway to Seattle flights
Midway to Tampa flights
O'Hare Intl to Santa Ana flights
Midway to San Francisco flights

Top 3 airlines flying from Peoria to Colorado

Discover the top 3 airlines that operate flights from Peoria to Colorado. 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 April 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$51Average$164FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$223Average$383FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$228Average$354FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights