$141+ Cheap flights from Peoria, IL to Denver (PIA - DEN)
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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — DEN
Oct 23 — Oct 301
Round-trip
1 adult, Economy
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Find cheap flights from Peoria to Denver 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.Cheapflights Tip: The best prices from Greater Peoria to Denver Intl are usually found in December or October, booked 76 days in advance, depart on a Thursday or Saturday and return on a Thursday
Cheap flight deals from Peoria to Denver
Cheapest
Best
Last-minute
One-way
Cheapest flights from Peoria to DenverExplore the most affordable flight options available from Peoria to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 23, 2026.
Explore the most affordable flight options available from Peoria to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 23, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 9/21. 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 10/15:24 pm -
Nonstop2h 20m
Thu 10/2210:20 am -
Nonstop1h 59m
Deal found 9/21![Allegiant Air logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/295:24 pm -
Nonstop2h 20m
Mon 11/210:37 pm -
1 stop13h 52m
Deal found 9/21![Multiple Airlines logo]()
$279
This CheapOair deal was found by Cheapflights users on 9/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/255:24 pm -
Nonstop2h 20m
Thu 10/2910:20 am -
Nonstop1h 59m
Deal found 9/19![Allegiant Air logo]()
$293
This Cheapflightsfares deal was found by Cheapflights users on 9/19. 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 10/85:24 pm -
Nonstop2h 20m
Thu 10/1510:20 am -
Nonstop1h 59m
Deal found 9/19![Allegiant Air logo]()
$295
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/248:45 am -
Nonstop2h 41m
Mon 10/265:45 pm -
Nonstop2h 21m
Deal found 9/21![United Airlines logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 9/19. 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 10/252:37 pm -
2 stops43h 32m
Thu 10/2910:20 am -
Nonstop1h 59m
Deal found 9/19![Multiple Airlines logo]()
$324
This United Airlines deal was found by Cheapflights users on 9/22. 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.
Fri 11/66:25 am -
1 stop5h 01m
Sat 11/75:45 pm -
Nonstop2h 21m
Deal found 9/22![United Airlines logo]()
$329
This American Airlines deal was found by Cheapflights users on 9/19. 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 10/175:30 pm -
1 stop6h 22m
Tue 10/209:03 am -
1 stop5h 50m
Deal found 9/19![American Airlines logo]()
$339
Best flights from Peoria to DenverDiscover carefully curated flight deals from Peoria to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 23, 2026.
Discover carefully curated flight deals from Peoria to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 23, 2026.
This United Airlines deal was found by Cheapflights users on 9/21. 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 11/66:25 am -
1 stop5h 01m
Sun 11/85:45 pm -
Nonstop2h 21m
Deal found 9/21![United Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 9/19. 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 10/295:30 pm -
1 stop7h 01m
Sat 10/3111:15 am -
1 stop6h 24m
Deal found 9/19![United Airlines logo]()
$339
This United Airlines deal was found by Cheapflights users on 9/20. 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.
Fri 11/208:41 am -
Nonstop2h 54m
Mon 11/234:24 pm -
1 stop5h 34m
Deal found 9/20![United Airlines logo]()
$429
This United Airlines deal was found by Cheapflights users on 9/23. 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.
Sat 11/217:15 pm -
1 stop5h 16m
Sat 11/286:00 am -
1 stop6h 45m
Deal found 9/23![United Airlines logo]()
$438
This United Airlines deal was found by Cheapflights users on 9/19. 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 10/173:41 pm -
1 stop5h 04m
Tue 10/205:25 pm -
Nonstop2h 26m
Deal found 9/19![United Airlines logo]()
$474
This United Airlines deal was found by Cheapflights users on 9/22. 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.
Thu 10/88:45 am -
Nonstop2h 41m
Mon 10/125:25 pm -
Nonstop2h 26m
Deal found 9/22![United Airlines logo]()
$525
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/168:45 am -
Nonstop2h 41m
Mon 10/195:36 pm -
1 stop4h 37m
Deal found 9/21![United Airlines logo]()
$544
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Sat 10/108:30 am -
2 stops23h 11m
Sat 10/173:48 pm -
1 stop6h 10m
Deal found 9/18![United Airlines logo]()
$550
This United Airlines deal was found by Cheapflights users on 9/19. 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 11/125:30 pm -
2 stops17h 26m
Sun 11/156:00 am -
1 stop6h 53m
Deal found 9/19![United Airlines logo]()
$589
Last-minute flights from Peoria to DenverDiscover last-minute flight deals from Peoria to Denver. Data last updated September 23, 2026 and is based on user searches.
Discover last-minute flight deals from Peoria to Denver. Data last updated September 23, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 9/21. 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 10/15:24 pm -
Nonstop2h 20m
Thu 10/2210:20 am -
Nonstop1h 59m
Deal found 9/21![Allegiant Air logo]()
$222
This Cheapflightsfares deal was found by Cheapflights users on 9/19. 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 10/85:24 pm -
Nonstop2h 20m
Thu 10/1510:20 am -
Nonstop1h 59m
Deal found 9/19![Allegiant Air logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 9/23. 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 10/155:24 pm -
Nonstop2h 20m
Thu 10/2210:20 am -
Nonstop1h 59m
Deal found 9/23![Allegiant Air logo]()
$254
This Kiwi.com deal was found by Cheapflights users on 9/23. 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 10/155:24 pm -
Nonstop2h 20m
Sun 10/2510:20 am -
Nonstop1h 59m
Deal found 9/23![Allegiant Air logo]()
$279
This Cheapflightsfares deal was found by Cheapflights users on 9/23. 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 10/225:24 pm -
Nonstop2h 20m
Sun 10/2510:20 am -
Nonstop1h 59m
Deal found 9/23![Allegiant Air logo]()
$316
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/248:45 am -
Nonstop2h 41m
Mon 10/265:45 pm -
Nonstop2h 21m
Deal found 9/21![United Airlines logo]()
$319
This CheapOair deal was found by Cheapflights users on 9/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/255:24 pm -
Nonstop2h 20m
Thu 10/2910:20 am -
Nonstop1h 59m
Deal found 9/19![Allegiant Air logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 9/19. 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 10/252:37 pm -
2 stops43h 32m
Thu 10/2910:20 am -
Nonstop1h 59m
Deal found 9/19![Multiple Airlines logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/295:24 pm -
Nonstop2h 20m
Mon 11/27:30 am -
2 stops28h 59m
Deal found 9/21![Multiple Airlines logo]()
$320
One-way flights from Peoria to DenverSearch for one-way flight options from Peoria to Denver. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
Search for one-way flight options from Peoria to Denver. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
This eDestinos deal was found by Cheapflights users on 9/22. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:24 pm -
Nonstop2h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Allegiant Air logo]()
$141
Find flight deals from Peoria to Denver
Discover tips and strategies to find the most affordable flight options for your journey from Peoria (PIA) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $222 (Cheapflightsfares) |
One-way from | $141 (eDestinos) |
Popular in | February |
Cheapest in | December |
Average price | $360 |
Good round-trip deal | $358 or less |
Good one-way deal | $185 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Peoria to Denver 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 7,457,451 searches. Data last updated September 23, 2026.
Use the filters below to find and compare flights from Peoria to Denver that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PeoriaDenver
PIA Greater Peoria - DEN Denver Intl
PIADEN
Greater Peoria
Sun 10/25
5:30 pm-10:52 pm
1 stop6h 22m
Denver Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$209
Quickest round-trip
PeoriaDenver
PIA Greater Peoria - DEN Denver Intl
PIADEN
Greater Peoria
Sun 10/25
5:24 pm-6:44 pm
Nonstop2h 20m
Denver Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$222
PeoriaDenver
PIA Greater Peoria - DEN Denver Intl
PIADEN
Greater Peoria
Fri 10/9
4:42 pm-11:58 pm
1 stop8h 16m
Denver Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$249
PeoriaDenver
PIA Greater Peoria - DEN Denver Intl
PIADEN
Greater Peoria
Tue 10/27
8:41 am-10:35 am
Nonstop2h 54m
Denver Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$279
PeoriaDenver
PIA Greater Peoria - DEN Denver Intl
PIADEN
Greater Peoria
Mon 10/5
8:45 am-10:26 am
Nonstop2h 41m
Denver Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$321
PeoriaDenver
PIA Greater Peoria - DEN Denver Intl
PIADEN
Greater Peoria
Thu 11/26
8:41 am-10:35 am
Nonstop2h 54m
Denver Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$329
PeoriaDenver
PIA Greater Peoria - DEN Denver Intl
PIADEN
Greater Peoria
Fri 11/6
6:25 am-10:26 am
1 stop5h 01m
Denver Intl
Sun 11/8
5:45 pm-9:06 pm
Nonstop2h 21m
$329
PeoriaDenver
PIA Greater Peoria - DEN Denver Intl
PIADEN
Greater Peoria
Wed 11/25
8:15 am-3:17 pm
1 stop8h 02m
Denver Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$339
PeoriaDenver
PIA Greater Peoria - DEN Denver Intl
PIADEN
Greater Peoria
Thu 10/29
5:30 pm-11:31 pm
1 stop7h 01m
Denver Intl
Sat 10/31
11:15 am-6:39 pm
1 stop6h 24m
$339
PeoriaDenver
PIA Greater Peoria - DEN Denver Intl
PIADEN
Greater Peoria
Thu 10/1
8:54 pm-10:25 am
2 stops38h 31m
Denver Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$346
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Peoria to Denver
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Peoria to Denver in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Peoria, Illinois-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Peoria, Illinois-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Peoria, Illinois-Denver flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Peoria, Illinois-Denver flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Peoria, Illinois-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Peoria to Denver
Have a flexible travel schedule? Discover the best time to fly to Denver from Peoria with our price prediction graph.
PIA-DEN
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 Denver
Prices
Airlines
How far ahead should I book a flight from Peoria, Illinois to Denver?
To ensure you get the cheapest price possible for a flight from Peoria, Illinois to Denver, you should look to book at least 74 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Peoria, Illinois to Denver?
Currently, December is the cheapest month in which you can book a flight from Peoria, Illinois to Denver (average of $253). Flying from Peoria, Illinois to Denver in February is currently the most expensive (average of $394). 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 DEN?
Find hourly flight availability from Peoria to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 23, 2026.
When flying from Peoria, Illinois to Denver, 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 Denver
Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated September 23, 2026.
Read reviews from past customers who have flown United Airlines,Allegiant Air, andAmerican Airlines from Peoria to Denver. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Comfort
7.3
Crew
8.1
Food
6.7
Entertainment
7.1
Overall
7.4
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Boarding
7.7
Comfort
7.3
Crew
8.1
Food
6.7
Entertainment
7.1
Overall
7.4
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Boarding
7.7
Comfort
7.3
Crew
8.1
Food
6.7
Entertainment
7.1
Overall
7.4
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Boarding
7.7
Comfort
7.3
Crew
8.1
Food
6.7
Entertainment
7.1
Overall
7.4
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Related info for your journey
Find useful and relevant information for your journey from Peoria to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Denver?
Book flights to Denver if you plan to visit one of these locationsThornton
Westminster
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Wheat Ridge
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Central City
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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Complete your trip
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Other flights to Denver
Explore flights to Denver departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 23, 2026.
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Peoria and Denver flights
Browse other Peoria and Denver flight options. Last updated on September 23, 2026.
Other flights from Peoria
Browse through other flights departing from Peoria. Flights are based on user searches made on Cheapflights and were last updated on September 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Peoria to Denver
Discover the top 3 airlines that operate flights from Peoria to Denver. 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 7,457,451 searches. Data last updated September 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$74 | Average$276 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$223 | Average$379 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$228 | Average$298 | FlexibilityNo cancel fee | On-time71% |