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$91+ Cheap flights from Peoria, IL (PIA) to Colorado

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 5/24. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — DEN
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
1 adult, Economy
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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 March 10, 2026.

This American Airlines deal was found by Cheapflights users on 3/9. 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.
Fri 4/177:05 pm
PIA
-
DEN
1 stop5h 54m
American Airlines
Sun 4/196:19 am
DEN
-
PIA
1 stop5h 33m
American Airlines
Deal found 3/9$169
This Cheapflightsfares deal was found by Cheapflights users on 3/5. 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 6/2811:07 am
PIA
-
DEN
Nonstop2h 27m
Allegiant Air
Thu 7/24:24 pm
DEN
-
PIA
Nonstop2h 10m
Allegiant Air
Deal found 3/5$184
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Wed 8/194:45 pm
PIA
-
DEN
1 stop7h 56m
American Airlines
Sat 8/225:31 pm
DEN
-
PIA
1 stop4h 50m
American Airlines
Deal found 3/9$189
This American Airlines deal was found by Cheapflights users on 3/10. 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.
Sun 4/127:05 pm
PIA
-
DEN
1 stop5h 54m
American Airlines
Thu 4/306:19 am
DEN
-
PIA
1 stop5h 33m
American Airlines
Deal found 3/10$208
This American Airlines deal was found by Cheapflights users on 3/8. 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.
Sun 4/56:10 am
PIA
-
DEN
1 stop6h 26m
American Airlines
Sun 4/126:19 am
DEN
-
PIA
1 stop5h 33m
American Airlines
Deal found 3/8$209
This Kiwi.com deal was found by Cheapflights users on 3/7. 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
Allegiant Air
Sun 8/164:27 pm
DEN
-
PIA
Nonstop2h 10m
Allegiant Air
Deal found 3/7$214
This Cheapflightsfares deal was found by Cheapflights users on 3/8. 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
Thu 5/284:27 pm
DEN
-
PIA
Nonstop2h 03m
Allegiant Air
Deal found 3/8$218
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Wed 9/1611:23 am
PIA
-
DEN
1 stop5h 19m
American Airlines
Sat 9/195:44 pm
DEN
-
PIA
1 stop4h 19m
American Airlines
Deal found 3/9$228
This United Airlines deal was found by Cheapflights users on 3/5. 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 4/188:50 am
PIA
-
DEN
Nonstop2h 43m
United Airlines
Fri 4/244:35 pm
DEN
-
PIA
1 stop6h 22m
United Airlines
Deal found 3/5$239
This Cheapflightsfares deal was found by Cheapflights users on 3/8. 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 6/1111:07 am
PIA
-
DEN
Nonstop2h 27m
Allegiant Air
Sun 6/144:50 pm
DEN
-
PIA
Nonstop2h 06m
Allegiant Air
Deal found 3/8$245
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Mon 4/207:05 pm
PIA
-
DEN
1 stop5h 54m
American Airlines
Fri 4/246:19 am
DEN
-
PIA
1 stop5h 33m
American Airlines
Deal found 3/9$247
This United Airlines deal was found by Cheapflights users on 3/9. 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.
Tue 3/246:35 am
PIA
-
MTJ
1 stop6h 27m
United Airlines
Sat 3/281:42 pm
MTJ
-
PIA
1 stop5h 57m
United Airlines
Deal found 3/9$301

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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$169
(American Airlines)

One-way from

$91
(Kiwi.com)

Popular in

February

Cheapest in

October

Average price

$334

Good round-trip deal

$327 or less

Good one-way deal

$345 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. 10% potential increase in price ($34 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 10, 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
Quickest round-trip

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Tue 4/21

5:35 pm-10:10 pm

1 stop5h 35m

Denver Intl

Tue 4/28

5:55 pm-9:19 pm

Nonstop2h 24m

$239

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Thu 6/18

8:20 pm-12:53 am

1 stop5h 33m

Denver Intl

Tue 6/23

6:00 am-12:46 pm

1 stop5h 46m

$269

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Wed 8/19

8:50 am-10:20 am

Nonstop2h 30m

Denver Intl

Sun 8/23

6:00 am-12:44 pm

1 stop5h 44m

$278

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Tue 4/28

1:20 pm-7:40 pm

1 stop7h 20m

Denver Intl

Sat 5/2

5:55 pm-9:19 pm

Nonstop2h 24m

$309

PeoriaMontrose

PIA - MTJ

PIAMTJ

Greater Peoria

Tue 4/14

8:50 am-12:41 pm

1 stop4h 51m

Montrose County

Sat 4/18

1:40 pm-10:57 pm

2 stops8h 17m

$334

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Fri 6/26

8:20 pm-12:53 am

1 stop5h 33m

Denver Intl

Thu 7/2

5:33 pm-9:01 pm

Nonstop2h 28m

$354

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Tue 7/21

5:33 pm-9:59 pm

1 stop5h 26m

Denver Intl

Sat 7/25

6:00 am-12:46 pm

1 stop5h 46m

$374

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Fri 4/10

5:35 pm-10:10 pm

1 stop5h 35m

Denver Intl

Mon 4/13

5:44 pm-11:57 pm

1 stop5h 13m

$374

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Sat 6/13

5:33 pm-11:37 pm

1 stop7h 04m

Denver Intl

Wed 6/24

6:00 am-12:46 pm

1 stop5h 46m

$394

PeoriaColorado Springs

PIA - COS

PIACOS

Greater Peoria

Tue 3/24

1:25 pm-9:44 pm

2 stops9h 19m

Colorado Springs

Sat 3/28

1:32 pm-8:39 pm

1 stop6h 07m

$394

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/8

Showing 1-10 of 35 resultsSorted by cheapest first
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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 $48). Flying from Peoria, Illinois to Colorado in February is currently the most expensive (average of $228). 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 March 10, 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 March 10, 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 March 10, 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
9,409 reviews

Comfort

7.3

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

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
9,409 reviews
United Airlines
7.4
Good
9,409 reviews

Comfort

7.3

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

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
714 reviews
United Airlines
7.4
Good
9,409 reviews

Comfort

7.3

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

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
11,414 reviews
United Airlines
7.4
Good
9,409 reviews

Comfort

7.3

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

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 12 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 35m. 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 most popular routes from Peoria, Illinois to Colorado?

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

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

    No one likes to see their flight delayed. When booking a flight from Peoria, Illinois to Colorado consider choosing SkyWest Airlines (51%), United Airlines (51%) or Allegiant Air (50%) as they are the most reliable in getting you off to your destination on time.

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

    While on average a flight from Peoria, Illinois to Colorado is generally $396, our data shows the cheapest flight currently is $223. When looking at the most popular route, (Greater Peoria - Denver Intl), you can expect to pay $214 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 $48). Flying from Peoria, Illinois to Colorado in February is currently the most expensive (average of $228). 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.

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Alternative routes for Peoria to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
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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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$55Average$148FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$219Average$382FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$228Average$373FlexibilityNo cancel feeOn-time71%

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