PIA - DEN

$91 Find Cheap Flights from Peoria to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Peoria to Denver departing on 5/24. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Denver

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Peoria to Denver, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Peoria to Denver, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$169
Typical prices: $217-$665
American Airlines
Fri 4/17Sun 4/19
PIA - DEN • 1 stop
Cheapest non-stop
$184
Typical prices: $182-$430
Allegiant Air
Sun 6/28Thu 7/2
PIA - DEN • Non-stop
Top airlines
Cheapest • from $169 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
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Nonstop flights
You can fly direct with United Airlines and Allegiant Air. Average duration is 2h 43m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $242 (round-trip)
Shortest trip • 5h 20m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 30% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 25% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
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Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Denver!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Peoria to Denver (PIA-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Peoria to Denver that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Peoria to Denver

Fri, Apr 17 - Sun, Apr 19
American Airlines Logo
7:05 pm - 11:59 pm
PIA
-
DEN
5h 54m
1 stop
American Airlines Logo
6:19 am - 12:52 pm
DEN
-
PIA
5h 33m
1 stop
$169American Airlines
Sun, Jun 28 - Thu, Jul 2
Allegiant Air Logo
11:07 am - 12:34 pm
PIA
-
DEN
2h 27mnonstop
Allegiant Air Logo
4:24 pm - 7:34 pm
DEN
-
PIA
2h 10mnonstop
$184Allegiant Air
Wed, Aug 19 - Sat, Aug 22
American Airlines Logo
4:45 pm - 11:41 pm
PIA
-
DEN
7h 56m
1 stop
American Airlines Logo
5:31 pm - 11:21 pm
DEN
-
PIA
4h 50m
1 stop
$189American Airlines
Sun, Apr 5 - Sun, Apr 12
American Airlines Logo
6:10 am - 11:36 am
PIA
-
DEN
6h 26m
1 stop
American Airlines Logo
6:19 am - 12:52 pm
DEN
-
PIA
5h 33m
1 stop
$209American Airlines
Thu, Aug 13 - Sun, Aug 16
Allegiant Air Logo
5:23 pm - 6:48 pm
PIA
-
DEN
2h 25mnonstop
Allegiant Air Logo
4:27 pm - 7:37 pm
DEN
-
PIA
2h 10mnonstop
$214Allegiant Air
Thu, May 21 - Thu, May 28
Allegiant Air Logo
5:13 pm - 6:36 pm
PIA
-
DEN
2h 23mnonstop
Allegiant Air Logo
4:27 pm - 7:30 pm
DEN
-
PIA
2h 03mnonstop
$218Allegiant Air
Thu, Apr 30 - Thu, May 14
American Airlines Logo
7:05 pm - 11:59 pm
PIA
-
DEN
5h 54m
1 stop
American Airlines Logo
6:19 am - 12:52 pm
DEN
-
PIA
5h 33m
1 stop
$228American Airlines
Sun, Jun 28 - Thu, Jul 2
Allegiant Air Logo
11:07 am - 12:34 pm
PIA
-
DEN
2h 27mnonstop
Allegiant Air Logo
4:24 pm - 7:34 pm
DEN
-
PIA
2h 10mnonstop
$235Allegiant Air
Sat, Apr 18 - Fri, Apr 24
United Airlines Logo
8:50 am - 10:33 am
PIA
-
DEN
2h 43mnonstop
United Airlines Logo
4:35 pm - 11:57 pm
DEN
-
PIA
6h 22m
1 stop
$239United Airlines
Thu, Jun 11 - Sun, Jun 14
Allegiant Air Logo
11:07 am - 12:34 pm
PIA
-
DEN
2h 27mnonstop
Allegiant Air Logo
4:50 pm - 7:56 pm
DEN
-
PIA
2h 06mnonstop
$245Allegiant Air
Booking Insights

KAYAK's insights & trends for Peoria to Denver flights

Get data-powered insights and trends into flights from Peoria to Denver to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Peoria, Illinois to Denver?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Peoria, Illinois to Denver departing in April.

What’s the cheapest day of the week to fly from Peoria to Denver?

The average price of all round-trip flights from Peoria to Denver clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Peoria to Denver, look for departures on Fridays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Denver, Friday is the cheapest day to fly and Tuesday is the most expensive.

What is the cheapest month to fly from Peoria to Denver?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Peoria to Denver, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Peoria to Denver is October, where tickets cost $223 (return) on average. On the other hand, the most expensive months are February and May, where the average cost of round-trip tickets is $376 and $359 respectively.

Can I save money by flying with a layover from Peoria to Denver?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $334, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Peoria to Denver?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Peoria to Denver, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Peoria to Denver, you should book around 3 weeks before departure, which saves you about 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$91
Best time to beat the crowds but there is an average 26% increase in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Peoria to Denver

When to book flights from Peoria to Denver

Are your dates flexible? Find out the best times to travel from Peoria to Denver based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Peoria to Denver

  • Can older adults get assistance services with United Airlines from Peoria to Denver?

    If you are a senior or an elderly passenger from Peoria to Denver, United Airlines would be the best airline to fly with. United Airlines Signature Service, offered through Global Airport Concierge, caters to passengers 65 and above. Agents from United Airlines will be there to greet you and see to your every need right up until you board the plane.

  • Which airline can I use from Peoria to Denver if I have an infant?

    Consider flying with Allegiant Air if you have a child below 2 years since all children, regardless of age, are welcome to fly with the airline. Free lap travel is available for infants at Allegiant Air. However, they strongly encourage purchasing a ticket for the newborn to have their seat and use an FAA-approved car seat.

  • Which Airlines fly Business class from Peoria to Denver?

    If you want to travel from Peoria to Denver in Business Class, you can book with United Airlines or American Airlines. The benefit of flying in Business Class is that they have exceptional amenities to make you feel more comfortable. With United, for example, passengers can enjoy on-demand entertainment right from their seatbacks, with a 15-inch screen and a seat that can transform into a bed.

  • After landing at Denver International Airport (DEN), can I travel to other cities?

    Yes, after landing at Denver International Airport (DEN), you can travel to various cities within Colorado and beyond. Denver is a central transportation hub, offering connections to destinations such as Boulder, Colorado Springs, Aspen, Vail, and many other cities. Additionally, the airport provides flights to numerous domestic and international destinations, allowing you to continue your journey to cities worldwide.

  • What is the cheapest flight from Peoria to Denver?

    In the last 3 days, the lowest price for a flight from Peoria to Denver was $91 for a one-way ticket and $169 for a round-trip.

  • Do I need a passport to fly between Peoria and Denver?

    A passport is not required to fly from Peoria to Denver.

  • Which airlines offer Wi-Fi service onboard planes from Peoria to Denver?

    Only American Airlines offers inflight Wi-Fi service on the Peoria to Denver flight route.

  • Which aircraft models fly most regularly from Peoria to Denver?

    The Embraer 175 (Enhanced Winglets) is the aircraft model that flies most regularly on the Peoria to Denver flight route.

  • Which airline alliances offer flights from Peoria to Denver?

    oneworld, and Star Alliance are the airline alliances operating flights between Peoria and Denver, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Peoria to Denver?

    There are nonstop flights from Peoria to Denver on a daily basis.

  • Which is the best airline for flights from Peoria to Denver, United Airlines or Allegiant Air?

    The two airlines most popular with KAYAK users for flights from Peoria to Denver are United Airlines and Allegiant Air. With an average price for the route of $363 and an overall rating of 7.4, United Airlines is the most popular choice. Allegiant Air is also a great choice for the route, with an average price of $162 and an overall rating of 7.3.

  • How does KAYAK find such low prices on flights from Peoria to Denver?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Peoria to Denver.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Peoria to Denver?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Peoria is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Peoria to Denver?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Denver with an airline and back to Peoria with another airline. Booking your flights between Peoria and DEN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Peoria to Denver?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Denver from Peoria up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Peoria to Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $345 or less one-way and $327 or less round-trip.
  • Consider booking with American Airlines for your child if they have to travel from Peoria to Denver unaccompanied. American Airlines is your best bet when flying as an unaccompanied child, offering a full range of first-rate services at unaccompanied minor rates that won't break the bank. Priority boarding, briefing to the flight staff before boarding, and transportation to and from the destination airport with the minor and their guardian are all services provided by American Airlines.
  • Traveling with pets? If you book with United Airlines, your pet is guaranteed a healthy, safe, and comfortable flight. Their outstanding airline pet service allows any legal pet species, regardless of size or weight, and you can have smaller pets in the cabin. Larger pets can also be transported as cargo and will still enjoy the flight.
  • If you are a passenger with limited mobility traveling from Peoria to Denver, Allegiant Air will make your journey experience unforgettable. A disabled customer flying with Allegiant will not have to pay for a unique seating arrangement. You are also entitled to their assistance services on board and at the departure and arrival airports. Passengers who also need a wheelchair are provided with one.
  • Getting downtown is easy after your flight from Peoria (PIA) to Denver International Airport (DEN). The airport train line connects DEN Denver International Airport with Downtown Denver. The Regional Transportation District (RTD) serving Metro Denver offers the A Line, which costs about $10.50 one way to transport passengers between the airport and Downtown Denver.
  • American Airlines is one of the Peoria to Denver flight airlines striving to reduce the amount of carbon they emit to the environment. With American Airlines, reduced jet fuel consumption is achieved through single-engine taxiing and the utilization of high-speed tugs. Connecting to the grid electricity at the gate is more efficient and produces fewer emissions than using the plane's auxiliary power system.

Prefer to fly direct from Peoria to Denver?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Greater Peoria to Denver Intl.
Find which airlines fly direct from Greater Peoria Airport to Denver Intl Airport, which days they fly and book direct flights.

Direct departures

Greater Peoria to Denver Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines,Allegiant Air

United Airlines,Allegiant Air

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines,Allegiant Air

United Airlines,Allegiant Air

See more direct flights

Direct returns

Denver Intl to Greater Peoria

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines,Allegiant Air

United Airlines,Allegiant Air

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines,Allegiant Air

United Airlines,Allegiant Air

See more direct flights

Reviews of the top 3 airlines serving from Peoria to Denver

 
See real verified KAYAK customer reviews for airlines flying from Peoria to Denver. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Peoria to Denver? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9409 reviews
7.3Comfort
6.6Food
7.7Boarding
7.1Entertainment
8.1Crew
Airline reviews

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

6.0 GoodAnonymous, Mar 2026
SFO - DEN
Read more United Airlines reviews

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

It’s always a great time flying with united airlines.

We got delayed three hours and nobody thought to have the bathroom fixed while we were sitting waiting to board? took a full hour to have maintenance come and check it off. Had to shut the bathroom down twice so that the pilots could go to the bathroom. Everyone missed their connections.

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

As great a red-eye flight as red-eye flights can be.

Both of my flights arrived early and check in process was smooth

Everything was on time Will use united again for sure

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Hotter than Hades in August. Why, why do crews think that in the winter when we are already dressed for cold weather we need a cabin that is 82 degrees. Even the vents were blowing hot air.

Flight was delayed. De-icing took a while. When we landed had to wait for another plane to vacate our gate. Just an overall bad experience.

Superb. Staff great. Great flight. As with other airlines, seating too tight and restrictive.

There is not one likable thing about this airline. It’s starts with the deceptive pricing and continues through the whole flight. The worst staff I’ve ever experienced way over priced bags absolutely no food or drink (unacceptable and you should be embarrassed) the seats are cramped and uncomfortable there is no entertainment there is nothing about this trash airline that constitutes any amount of money. It’s worse than spirit and way more expensive it is disgraceful. Do not travel with Allegiant I repeat do not bother no matter what they say the price is it is never ever going to be the right choice I’m mind blown at how awful the entire experience was I’m embarrassed that I chose so poorly I cannot reiterate enough how beyond horrible this company and its staff are, not one person on this flight or at the airport is qualified to sweep up trash on a city sidewalk they should certainly never be given any job that requires a brain or manners or communication with human beings, what a disgrace to the human race. Your criminal chiselers and should be put out to pasture

Great flight. Friendly staff. Free snacks and drinks would be nice. I would love fewer taxes and fees added on.

My 90 year old father flew with me. He needed wheel chair assistance and is nearly deaf. The staff was amazing with him.

It was fine. Nobody was outstandingly friendly but no one was rude and everything was smooth . The captain thanked us for flying but no one greeted me as I walked on the plane or as I exited which is the least they could do lol

Clean, friendly, roomy. But check-in from the phone link was terrible. Repeated attempts wouldn’t save at the final step. Just kept spinning! It was very frustrating. Finally, I used the app (vs website link) to check-in which worked very smoothly on the first attempt.

Check in on the web portal was cumbersome! After several attempts I finally got the boarding pass.

Excellent flight and even arrived 23 min early. No entertainment , or wi fi on board, but I downloaded a couple of movies beforehand which kept me entertained. Really like flying Allegiant airlines.

WE were delayed about an hour and never any communications from the employees working the gate. We also were moved to a total of three gates.

I love how they show love to their customers and care about them too.

It was an older plane. First Class was not especially roomy or comfortable. It was a short flight so there were no meal but they did offer mixed nuts which used to be normal but now is rare. Crew member was very polite and professional.

Flight to Tampa was delayed taking off due to plane arriving late but no other issues

As previously stated the delay I experienced flying from Wichita to Chicago caused a host of issues. When I finally was able to be booked on the last remaining American flight from Chicago to Cincinnati, the gate changed four times with the last change occurring very near the scheduled boarding time. While I didn't have a problem moving from gate to gate, I did notice and make note of others that had mobility issues and had to move each time for the gate change.

Maintenance took a very long time and then we were in a holding pattern. While a one-off maintenance issue is standard, there were delays on both of my flights for this trip based on maintenance issues with the planes, which delayed both flights over 45 minutes. Thankfully, I didn't have any connections but it wasn't an experience that would make me pick AA if I have other options.

No Snacks or Entertainment. The flight was short, snacks should still be given.

See prior comment about how Kayak mishandled my reservation and delayed my arrival by 6 hours.

The flight was fine. It's the satellite terminal that supports American eagle flights is what sucks. There is only one food option and everything there is way overpriced. I mean I know it's airport pricing, but it's even crazier than that. I bought a sandwich in a plastic container for $18.

Boarding delayed 20 minutes for no reason, no wifi, in flight entertainment, or snacks / waters?

Delayed an hour due to operational issues. Minimal apologies or care for the significant inconvenience caused. Landed at nearly 1am and they still couldn’t find ground staff to get us off the plane promptly.

Don't change gate multiple times make people run across the airport. Announce delays in a timely manner. Have maintenance crew ready. Don't delay and keep passengers on the plane for 3 hrs. on tarmac.

Everything you need to know for your flight from Peoria to Denver

Information on your arrival and departure airports