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$94+ 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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — DEN
Aug 25 — Sep 11
Tue 8/25
Tue 9/1
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 July 26, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 7/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1310:07 am
PIA
-
DEN
Nonstop2h 20m
Allegiant Air
Sun 9/272:26 pm
DEN
-
PIA
Nonstop2h 03m
Allegiant Air
Deal found 7/23$156
This Cheapflightsfares deal was found by Cheapflights users on 7/24. 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.
Sun 9/610:07 am
PIA
-
DEN
Nonstop2h 20m
Allegiant Air
Thu 9/102:16 pm
DEN
-
PIA
Nonstop2h 03m
Allegiant Air
Deal found 7/24$159
This Cheapflightsfares deal was found by Cheapflights users on 7/26. 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 8/2010:07 am
PIA
-
DEN
Nonstop2h 19m
Allegiant Air
Thu 8/272:17 pm
DEN
-
PIA
Nonstop2h 07m
Allegiant Air
Deal found 7/26$169
This Cheapflightsfares deal was found by Cheapflights users on 7/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:24 pm
PIA
-
DEN
Nonstop2h 20m
Allegiant Air
Sun 10/1811:15 am
DEN
-
PIA
Nonstop1h 59m
Allegiant Air
Deal found 7/23$177
This Cheapflightsfares deal was found by Cheapflights users on 7/21. 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.
Thu 9/2410:07 am
PIA
-
DEN
Nonstop2h 20m
Allegiant Air
Sun 9/272:26 pm
DEN
-
PIA
Nonstop2h 03m
Allegiant Air
Deal found 7/21$189
This Cheapflightsfares deal was found by Cheapflights users on 7/24. 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.
Thu 8/2010:07 am
PIA
-
DEN
Nonstop2h 19m
Allegiant Air
Sun 8/232:27 pm
DEN
-
PIA
Nonstop2h 07m
Allegiant Air
Deal found 7/24$193
This Cheapflightsfares deal was found by Cheapflights users on 7/22. 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.
Thu 8/135:23 pm
PIA
-
DEN
Nonstop2h 25m
Allegiant Air
Thu 8/202:17 pm
DEN
-
PIA
Nonstop2h 07m
Allegiant Air
Deal found 7/22$233
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2010:07 am
PIA
-
DEN
Nonstop2h 19m
Multiple Airlines
Thu 8/276:22 am
DEN
-
PIA
2 stops25h 18m
Multiple Airlines
Deal found 7/23$239
This American Airlines deal was found by Cheapflights users on 7/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/44:43 pm
PIA
-
COS
1 stop7h 10m
American Airlines
Sun 9/68:00 am
COS
-
PIA
2 stops9h 16m
American Airlines
Deal found 7/24$339
This United Airlines deal was found by Cheapflights users on 7/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:30 am
PIA
-
COS
1 stop5h 32m
United Airlines
Wed 11/41:15 pm
COS
-
PIA
1 stop6h 32m
United Airlines
Deal found 7/22$399
This United Airlines deal was found by Cheapflights users on 7/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/295:45 am
PIA
-
MTJ
1 stop7h 03m
United Airlines
Wed 9/21:42 pm
MTJ
-
PIA
1 stop6h 08m
United Airlines
Deal found 7/21$409
This United Airlines deal was found by Cheapflights users on 7/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/298:45 am
PIA
-
GJT
1 stop4h 53m
United Airlines
Tue 9/11:40 pm
GJT
-
PIA
1 stop6h 10m
United Airlines
Deal found 7/21$419

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 July 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$156
(Cheapflightsfares)

One-way from

$94
(Cheapflightsfares)

Popular in

February

Cheapest in

October

Average price

$368

Good round-trip deal

$359 or less

Good one-way deal

$204 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. 6% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 26, 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

Fri 11/13

8:50 am-10:20 am

Nonstop2h 30m

Denver Intl

Mon 11/16

5:29 pm-8:47 pm

Nonstop2h 18m

$269

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Wed 8/19

8:45 am-10:26 am

Nonstop2h 41m

Denver Intl

Sat 8/22

5:30 pm-8:50 pm

Nonstop2h 20m

$349

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Mon 9/21

3:35 pm-10:13 pm

1 stop7h 38m

Denver Intl

Sat 9/26

5:25 pm-8:51 pm

Nonstop2h 26m

$369

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Fri 11/20

8:41 am-10:35 am

Nonstop2h 54m

Denver Intl

Mon 11/23

5:38 pm-10:58 pm

1 stop4h 20m

$369

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Wed 9/9

8:45 am-10:26 am

Nonstop2h 41m

Denver Intl

Sat 9/12

6:00 am-1:39 pm

1 stop6h 39m

$369

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Wed 8/5

8:45 am-10:24 am

Nonstop2h 39m

Denver Intl

Thu 8/13

5:30 pm-8:50 pm

Nonstop2h 20m

$385

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Wed 9/16

3:35 pm-10:13 pm

1 stop7h 38m

Denver Intl

Mon 9/21

5:25 pm-8:45 pm

Nonstop2h 20m

$388

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Wed 9/23

8:45 am-10:26 am

Nonstop2h 41m

Denver Intl

Wed 9/30

3:47 pm-10:58 pm

1 stop6h 11m

$389

PeoriaColorado Springs

PIA - COS

PIACOS

Greater Peoria

Sat 10/31

2:35 pm-9:57 pm

1 stop8h 22m

Colorado Springs

Wed 11/4

1:28 pm-9:06 pm

1 stop6h 38m

$399

PeoriaColorado Springs

PIA - COS

PIACOS

Greater Peoria

Sat 8/29

3:35 pm-9:54 pm

1 stop7h 19m

Colorado Springs

Wed 9/2

6:00 am-2:57 pm

2 stops7h 57m

$404

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/25

Showing 1-10 of 25 resultsSorted by cheapest first
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, December is the cheapest month in which you can book a flight from Peoria, Illinois to Colorado (average of $264). Flying from Peoria, Illinois to Colorado in March is currently the most expensive (average of $401). 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 July 26, 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 July 26, 2026.

The most flights from PIA to USCO are scheduled on a Sunday (2 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?

Airfare is below average for this route at the moment.
Peoria, Illinois to Colorado flights typically cost between $269 and $409 in September.
The cheapest round-trip price found within the last 5 days was $156 on Allegiant Air (Sep 13-Sep 27).

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

The best time to book flights from Peoria, Illinois to Colorado is 80 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 July 26, 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
10,039 reviews

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

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
10,039 reviews
United Airlines
7.4
Good
10,039 reviews

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

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
682 reviews
United Airlines
7.4
Good
10,039 reviews

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

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
11,844 reviews
United Airlines
7.4
Good
10,039 reviews

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

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 11 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 2h 30m. Peoria, Illinois and Colorado are separated by a distance of 790 mi. Most flights are nonstop.

  • 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 $78. 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 - 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 (83%), United Airlines (83%) or Allegiant Air (81%) 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 $384, our data shows the cheapest flight currently is $119. When looking at the most popular route, (Greater Peoria - Denver Intl), you can expect to pay $156 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, December is the cheapest month in which you can book a flight from Peoria, Illinois to Colorado (average of $264). Flying from Peoria, Illinois to Colorado in March is currently the most expensive (average of $401). 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

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Alternative routes for Peoria to Colorado

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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 July 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$74Average$265FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$223Average$386FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$228Average$373FlexibilityNo cancel feeOn-time71%

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