HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Colorado

$74+ 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 12/19. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — DEN
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
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

Keep the following information in mind while searching for Peoria to Colorado flight deals. Data was last updated November 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$124
(Cheapflightsfares)

One-way from

$74
(Cheapflightsfares)

Popular in

July

Cheapest in

February

Average price

$277

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.
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. 12% potential increase in price ($37 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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

Find 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 November 26, 2025.

This Booking.com deal was found by Cheapflights users on 11/25. 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 11/25$103
This Cheapflightsfares deal was found by Cheapflights users on 11/25. 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 12/123:08 pmPIA - DEN
Nonstop2h 26mAllegiant Air
Mon 12/155:24 pmDEN - PIA
Nonstop1h 57mAllegiant Air
Deal found 11/25$124
This Cheapflightsfares deal was found by Cheapflights users on 11/24. 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.
Mon 12/223:13 pmPIA - DEN
Nonstop2h 26mAllegiant Air
Mon 12/295:54 pmDEN - PIA
Nonstop1h 57mAllegiant Air
Deal found 11/24$227
This Kiwi.com deal was found by Cheapflights users on 11/25. 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.
Fri 12/59:41 pmPIA - DEN
1 stop7h 17mMultiple Airlines
Fri 12/125:24 pmDEN - PIA
Nonstop1h 57mMultiple Airlines
Deal found 11/25$228
This United Airlines deal was found by Cheapflights users on 11/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/235:19 pmPIA - DEN
1 stop7h 19mUnited Airlines
Tue 12/307:45 amDEN - PIA
1 stop5h 23mUnited Airlines
Deal found 11/23$229
This United Airlines deal was found by Cheapflights users on 11/24. 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.
Mon 12/225:19 pmPIA - DEN
1 stop7h 19mUnited Airlines
Mon 12/295:30 pmDEN - PIA
Nonstop2h 17mUnited Airlines
Deal found 11/24$258
This American Airlines deal was found by Cheapflights users on 11/25. 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 12/125:16 pmPIA - DEN
1 stop6h 49mAmerican Airlines
Mon 12/156:21 amDEN - PIA
1 stop9h 24mAmerican Airlines
Deal found 11/25$269
This Kiwi.com deal was found by Cheapflights users on 11/25. 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.
Fri 12/129:41 pmPIA - DEN
1 stop7h 17mMultiple Airlines
Mon 12/155:24 pmDEN - PIA
Nonstop1h 57mMultiple Airlines
Deal found 11/25$270
This Kiwi.com deal was found by Cheapflights users on 11/24. 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.
Mon 12/229:16 pmPIA - DEN
2 stops27h 51mMultiple Airlines
Mon 12/295:54 pmDEN - PIA
Nonstop1h 57mMultiple Airlines
Deal found 11/24$286
This United Airlines deal was found by Cheapflights users on 11/25. 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.
Fri 12/198:35 amPIA - DEN
Nonstop2h 45mUnited Airlines
Wed 12/245:30 pmDEN - PIA
Nonstop2h 17mUnited Airlines
Deal found 11/25$287
This United Airlines deal was found by Cheapflights users on 11/25. 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.
Wed 12/108:40 amPIA - COS
1 stop6h 49mUnited Airlines
Sun 12/1412:50 pmCOS - PIA
1 stop7h 41mUnited Airlines
Deal found 11/25$349
This United Airlines deal was found by Cheapflights users on 11/25. 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.
Wed 12/246:30 amPIA - COS
1 stop5h 54mUnited Airlines
Mon 12/293:38 pmCOS - PIA
1 stop4h 09mUnited Airlines
Deal found 11/25$667

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 November 26, 2025.
Use the filters below to find and compare flights from Peoria to Colorado that are best for you.

Fly from

Peoria

Fly to

Colorado

Route

Depart

Return

Price

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Sat 1/24

5:16 pm-11:16 pm

1 stop7h 00m

Denver Intl

Mon 2/2

7:50 am-3:24 pm

1 stop6h 34m

$229

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Tue 12/23

5:19 pm-11:38 pm

1 stop7h 19m

Denver Intl

Tue 12/30

7:45 am-2:08 pm

1 stop5h 23m

$229

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Thu 1/15

8:35 am-10:20 am

Nonstop2h 45m

Denver Intl

Sun 1/18

5:30 pm-8:47 pm

Nonstop2h 17m

$236

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Mon 12/22

5:19 pm-11:38 pm

1 stop7h 19m

Denver Intl

Mon 12/29

6:00 am-12:20 pm

1 stop5h 20m

$268

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Sat 1/24

8:35 am-10:20 am

Nonstop2h 45m

Denver Intl

Mon 2/2

5:30 pm-8:47 pm

Nonstop2h 17m

$279

PeoriaMontrose

PIA - MTJ

PIAMTJ

Greater Peoria

Tue 1/20

8:35 am-2:32 pm

1 stop6h 57m

Montrose County

Sat 1/24

1:32 pm-8:47 pm

1 stop6h 15m

$281

PeoriaGrand Junction

PIA - GJT

PIAGJT

Greater Peoria

Tue 1/20

3:55 pm-9:30 pm

1 stop6h 35m

Grand Junction Regnl

Sat 1/24

12:46 pm-9:43 pm

1 stop7h 57m

$291

PeoriaGrand Junction

PIA - GJT

PIAGJT

Greater Peoria

Tue 1/20

8:35 am-12:40 pm

1 stop5h 05m

Grand Junction Regnl

Sat 1/24

1:38 pm-8:47 pm

1 stop6h 09m

$291

PeoriaColorado Springs

PIA - COS

PIACOS

Greater Peoria

Fri 1/30

6:30 am-11:02 am

1 stop5h 32m

Colorado Springs

Fri 3/6

1:32 pm-9:31 pm

2 stops6h 59m

$295

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Mon 5/25

5:20 pm-11:18 pm

1 stop6h 58m

Denver Intl

Tue 6/2

3:20 pm-9:16 pm

1 stop4h 56m

$299

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/26

Showing 1-10 of 28 results
1
2
3

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 $49). Flying from Peoria, Illinois to Colorado in March is currently the most expensive (average of $164). 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 November 26, 2025.

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.

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 November 26, 2025.
See what other customers who have flown with United Airlines, American Airlines, and Allegiant Air 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
9,046 reviews

Crew

8.1

Comfort

7.3

Boarding

7.7

Overall

7.4

Food

6.6

Entertainment

7.1

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
9,046 reviews
United Airlines
7.4
Good
9,046 reviews

Crew

8.1

Comfort

7.3

Boarding

7.7

Overall

7.4

Food

6.6

Entertainment

7.1

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
11,038 reviews
United Airlines
7.4
Good
9,046 reviews

Crew

8.1

Comfort

7.3

Boarding

7.7

Overall

7.4

Food

6.6

Entertainment

7.1

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
700 reviews
United Airlines
7.4
Good
9,046 reviews

Crew

8.1

Comfort

7.3

Boarding

7.7

Overall

7.4

Food

6.6

Entertainment

7.1

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 13 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 7h. 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 - Grand Junction Regnl 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 (89%), United Airlines (89%) or Allegiant Air (78%) 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 $402, our data shows the cheapest flight currently is $74. When looking at the most popular route, (Greater Peoria - Denver Intl), you can expect to pay $103 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 $49). Flying from Peoria, Illinois to Colorado in March is currently the most expensive (average of $164). 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 John F Kennedy Intl flights
O'Hare Intl to Sky Harbor Intl flights
O'Hare Intl to Dallas/Fort Worth flights
O'Hare Intl to LaGuardia flights
O'Hare Intl to Orlando flights
O'Hare Intl to Fort Lauderdale flights
O'Hare Intl to Los Angeles flights
O'Hare Intl to Miami flights
O'Hare Intl to Denver flights
O'Hare Intl to Newark flights
O'Hare Intl to San Francisco flights
O'Hare Intl to Tampa flights
O'Hare Intl to Atlanta flights
O'Hare Intl to Hobby flights
Midway to Dallas/Fort Worth flights
O'Hare Intl to Honolulu flights
Midway to Las Vegas flights
O'Hare Intl to Fort Myers flights
O'Hare Intl to Seattle flights
Midway to John F Kennedy Intl flights
Midway to Atlanta flights
Midway to Miami flights
Midway to Orlando flights
O'Hare Intl to George Bush Intcntl flights
O'Hare Intl to Santa Ana flights
O'Hare Intl to Dulles Intl flights
Midway to Fort Lauderdale flights
O'Hare Intl to Reagan-National flights
Midway to Hobby flights
O'Hare Intl to New Orleans flights
O'Hare Intl to Baltimore flights
Midway to Los Angeles flights
Midway to Sky Harbor Intl flights
O'Hare Intl to Philadelphia flights
O'Hare Intl to Salt Lake City flights
O'Hare Intl to Ontario flights
O'Hare Intl to West Palm Beach flights
O'Hare Intl to San Diego flights
O'Hare Intl to Boston flights
Midway to Newark flights
St. Louis to Las Vegas flights
O'Hare Intl to Austin flights
O'Hare Intl to Love Field flights
O'Hare Intl to Palm Springs flights
Midway to San Francisco flights
O'Hare Intl to Sarasota flights
Midway to LaGuardia flights
Midway to Tampa flights
O'Hare Intl to Kahului 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 November 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$76Average$144FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$218Average$354FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$228Average$345FlexibilityNo 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.