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$131+ 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 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — DEN
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
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 January 21, 2026.

This United Airlines deal was found by Cheapflights users on 1/19. 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.
Thu 3/129:00 am
PIA
-
DEN
Nonstop2h 05m
United Airlines
Tue 3/175:27 pm
DEN
-
PIA
Nonstop2h 12m
United Airlines
Deal found 1/19$209
This United Airlines deal was found by Cheapflights users on 1/19. 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.
Wed 2/259:00 am
PIA
-
DEN
Nonstop2h 05m
United Airlines
Sat 2/286:00 am
DEN
-
PIA
1 stop7h 10m
United Airlines
Deal found 1/19$219
This American Airlines deal was found by Cheapflights users on 1/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/142:50 pm
PIA
-
DEN
1 stop7h 00m
American Airlines
Tue 2/241:25 pm
DEN
-
PIA
1 stop8h 31m
American Airlines
Deal found 1/19$229
This American Airlines deal was found by Cheapflights users on 1/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/196:55 pm
PIA
-
DEN
1 stop4h 42m
American Airlines
Sat 2/217:00 am
DEN
-
PIA
1 stop6h 17m
American Airlines
Deal found 1/20$249
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Wed 2/185:45 pm
PIA
-
DEN
1 stop6h 21m
United Airlines
Sun 2/226:00 am
DEN
-
PIA
1 stop7h 10m
United Airlines
Deal found 1/20$253
This United Airlines deal was found by Cheapflights users on 1/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/259:00 am
PIA
-
DEN
Nonstop2h 05m
United Airlines
Mon 3/27:45 am
DEN
-
PIA
1 stop5h 25m
United Airlines
Deal found 1/18$258
This United Airlines deal was found by Cheapflights users on 1/21. 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.
Fri 2/275:45 pm
PIA
-
DEN
1 stop6h 21m
United Airlines
Mon 3/27:45 am
DEN
-
PIA
1 stop5h 25m
United Airlines
Deal found 1/21$266
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Wed 2/410:45 am
PIA
-
DEN
1 stop5h 06m
United Airlines
Sun 2/86:00 am
DEN
-
PIA
1 stop5h 38m
United Airlines
Deal found 1/20$269
This United Airlines deal was found by Cheapflights users on 1/21. 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.
Fri 2/275:45 pm
PIA
-
DEN
1 stop6h 21m
United Airlines
Sun 3/16:00 am
DEN
-
PIA
1 stop7h 10m
United Airlines
Deal found 1/21$271
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Sat 2/282:51 pm
PIA
-
DEN
1 stop5h 57m
United Airlines
Mon 3/27:45 am
DEN
-
PIA
1 stop5h 25m
United Airlines
Deal found 1/20$281
This American Airlines deal was found by Cheapflights users on 1/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/137:00 pm
PIA
-
DEN
1 stop4h 37m
American Airlines
Fri 2/205:57 pm
DEN
-
PIA
1 stop4h 28m
American Airlines
Deal found 1/19$284
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Tue 2/31:24 pm
PIA
-
COS
2 stops9h 42m
United Airlines
Sat 2/71:25 pm
COS
-
PIA
1 stop6h 22m
United Airlines
Deal found 1/20$384

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 January 21, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$209
(United Airlines)

One-way from

$131
(Kiwi.com)

Popular in

July

Cheapest in

October

Average price

$277

Good round-trip deal

$331 or less

Good one-way deal

$114 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. 2% potential increase in price ($8 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 January 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 January 21, 2026.
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

Wed 2/25

5:45 pm-11:06 pm

1 stop6h 21m

Denver Intl

Sat 2/28

6:00 am-12:43 pm

1 stop5h 43m

$229

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Wed 2/18

5:45 pm-11:06 pm

1 stop6h 21m

Denver Intl

Sun 2/22

6:00 am-2:10 pm

1 stop7h 10m

$253

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Wed 2/25

5:45 pm-11:06 pm

1 stop6h 21m

Denver Intl

Mon 3/2

7:45 am-2:10 pm

1 stop5h 25m

$268

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Fri 2/27

5:45 pm-11:06 pm

1 stop6h 21m

Denver Intl

Sun 3/1

6:00 am-2:10 pm

1 stop7h 10m

$271

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Sat 2/28

2:51 pm-7:48 pm

1 stop5h 57m

Denver Intl

Mon 3/2

7:45 am-2:10 pm

1 stop5h 25m

$281

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Wed 6/3

5:20 pm-11:18 pm

1 stop6h 58m

Denver Intl

Tue 6/9

5:29 pm-8:47 pm

Nonstop2h 18m

$281

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Mon 4/27

5:25 pm-10:05 pm

1 stop5h 40m

Denver Intl

Sat 5/2

8:15 am-2:04 pm

1 stop4h 49m

$299

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Wed 2/18

5:45 pm-11:06 pm

1 stop6h 21m

Denver Intl

Sat 2/21

6:00 am-2:10 pm

1 stop7h 10m

$299

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Thu 5/7

5:25 pm-11:30 pm

1 stop7h 05m

Denver Intl

Sun 5/10

6:00 am-2:04 pm

1 stop7h 04m

$299

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Sat 1/31

3:00 pm-9:59 pm

1 stop7h 59m

Denver Intl

Fri 2/6

6:00 am-12:38 pm

1 stop5h 38m

$304

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 26 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 $166). 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 January 21, 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 January 21, 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 January 21, 2026.
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
9,191 reviews

Overall

7.4

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

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
9,191 reviews
United Airlines
7.4
Good
9,191 reviews

Overall

7.4

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

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
7.2
Good
11,173 reviews
United Airlines
7.4
Good
9,191 reviews

Overall

7.4

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

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
7.2
Good
705 reviews
United Airlines
7.4
Good
9,191 reviews

Overall

7.4

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

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 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 6h 21m. Peoria, Illinois and Colorado are separated by a distance of 790 mi.

  • 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 (70%), United Airlines (70%) or Allegiant Air (41%) 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 $389, 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 $209 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 $166). 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

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 January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$56Average$142FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$218Average$356FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$228Average$345FlexibilityNo cancel feeOn-time71%

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