PIA - DEN

$109 Find Cheap Flights from Peoria to Denver - Compare and Save

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 10/11. 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

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Everything you should know

Cheapest round-trip
$125
Typical prices: $166-$279
Allegiant Air
Thu 10/1Sun 10/4
PIA - DEN • Non-stop
Cheapest one-way
$109
Typical prices: $129-$225
Allegiant Air
Sun 10/11
PIA - DEN • Non-stop
Top airlines
Cheapest • from $125 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
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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 31m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top layover airports
Cheapest • Avg $228 (round-trip)
Shortest trip • 5h 21m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 24% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 33% price drop
Most popular
Good to know
Good to know
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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

Thu, Oct 1 - Sun, Oct 4
Allegiant Air Logo
5:24 pm - 6:44 pm
PIA
-
DEN
2h 20mnonstop
Allegiant Air Logo
11:15 am - 2:14 pm
DEN
-
PIA
1h 59mnonstop
$125Allegiant Air
Sun, Aug 23 - Sun, Sep 13
Allegiant Air Logo
10:07 am - 11:26 am
PIA
-
DEN
2h 19mnonstop
Allegiant Air Logo
2:26 pm - 5:29 pm
DEN
-
PIA
2h 03mnonstop
$126Allegiant Air
Sun, Sep 6 - Sun, Sep 13
Allegiant Air Logo
10:07 am - 11:27 am
PIA
-
DEN
2h 20mnonstop
Allegiant Air Logo
2:26 pm - 5:29 pm
DEN
-
PIA
2h 03mnonstop
$162Allegiant Air
Thu, Aug 20 - Thu, Aug 27
Allegiant Air Logo
10:07 am - 11:26 am
PIA
-
DEN
2h 19mnonstop
Allegiant Air Logo
2:17 pm - 5:24 pm
DEN
-
PIA
2h 07mnonstop
$163Allegiant Air
Thu, Aug 20 - Thu, Aug 27
Allegiant Air Logo
10:07 am - 11:26 am
PIA
-
DEN
2h 19mnonstop
Allegiant Air Logo
2:17 pm - 5:24 pm
DEN
-
PIA
2h 07mnonstop
$171Allegiant Air
Thu, Aug 20 - Thu, Aug 27
Allegiant Air Logo
10:07 am - 11:26 am
PIA
-
DEN
2h 19mnonstop
Allegiant Air Logo
2:17 pm - 5:24 pm
DEN
-
PIA
2h 07mnonstop
$176Allegiant Air
Thu, Aug 20 - Thu, Aug 27
Allegiant Air Logo
10:07 am - 11:26 am
PIA
-
DEN
2h 19mnonstop
Allegiant Air Logo
2:17 pm - 5:24 pm
DEN
-
PIA
2h 07mnonstop
$184Allegiant Air
Thu, Oct 22 - Thu, Oct 29
Allegiant Air Logo
5:24 pm - 6:44 pm
PIA
-
DEN
2h 20mnonstop
Allegiant Air Logo
10:20 am - 1:19 pm
DEN
-
PIA
1h 59mnonstop
$194Allegiant Air
Sun, Aug 23 - Wed, Aug 26
Multiple Airlines Logo
10:07 am - 11:26 am
PIA
-
DEN
2h 19mnonstop
Multiple Airlines Logo
9:06 pm - 8:40 am
DEN
-
PIA
34h 34m
2 stops
$211Multiple Airlines
Fri, Sep 11 - Sun, Sep 13
Multiple Airlines Logo
8:52 pm - 3:52 am
PIA
-
DEN
8h 00m
1 stop
Multiple Airlines Logo
2:26 pm - 5:29 pm
DEN
-
PIA
2h 03mnonstop
$222Multiple Airlines
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 October.

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 Tuesday, as it's usually the priciest day. When flying back from Denver, Monday is the cheapest day to fly and Wednesday 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 March, where the average cost of round-trip tickets is $394 and $389 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 $379, 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 2 weeks before departure, which saves you about 24% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low season

February

Cheapest flight

$109
Best time to beat the crowds but there is an average 18% increase in price.
Most popular time to fly and prices are also 3% 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 5 days, the lowest price for a flight from Peoria to Denver was $109 for a one-way ticket and $125 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 $366 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 $259 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 $226 or less one-way and $348 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

Allegiant Air,United Airlines

Allegiant Air,United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

Allegiant Air,United Airlines

Allegiant Air,United Airlines

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

Allegiant Air,United Airlines

Allegiant Air,United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

Allegiant Air,United Airlines

Allegiant Air,United Airlines

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 10007 reviews
7.3Comfort
8.1Crew
6.6Food
7.1Entertainment
7.7Boarding
Airline reviews

Checking bag at terminal was horrible. No agents to check us in and only 1 kiosk working. Boarding went ok. Crew onboard was very scattered rained. Missed our row while serving and then didn’t see them hardly again.

4.0 OkayDavid, Jun 2026
FAR - DEN
Read more United Airlines reviews

Checking bag at terminal was horrible. No agents to check us in and only 1 kiosk working. Boarding went ok. Crew onboard was very scattered rained. Missed our row while serving and then didn’t see them hardly again.

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

I flew from Santa Fe to Denver to catch a flight to London and the transfer of my luggage on arrival at Denver to the London flight worked perfectly. The crew on the ground and on board for the London flight were so friendly and efficient.

Late- that’s what United does best. Missed my connection, rebooked to a flight 17 hours later and had to spend $500 on a hotel. What did I get? A $15 meal voucher. What can you get in an airport for $15. I hate United so much.

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

Excellent flight. Boarding was efficient and departure was on time. Smooth flight with on time arrival. Deplaning was also efficient.

late departure due to some unspecified issue with ventilating the cabin. They got it running but it was FREEZING for the whole flight. I asked for a blanket but they didn't provide one. They could not turn up the heat. it was quite miserable.

Plane was so old it had cigarette butt trays in the seat

The price was the only good thing about this flight. It was scary during takeoff when the plane tilted side to side. It made me feel very nervous as I have never had a take-off that unsmooth. There was no on-flight movie or music options and the only complimentary option was water. Other airlines offer trail mix or a caramel cookie and pop options as complimentary. This flight was a 2.5 hour flight. I understand for shorter flights not having options, but a flight 2 hours or longer should offer more complimentary options and in flight entertainment. Also the seats did not recline and for a longer flight reclining seats are a must for comfort.

A very pleasant flight but it would be greatly improved with wifi to help entertain kids

This is a no frills, get it done, efficient airline. The seat is a lawn chair. You better bring your own entertainment. If you want something other than water you need to pay for it. But they will get you to your destination quickly, on time, and then they will turn the flight around and go right back where they came from. Reliably. Couple times a week tops. If it fits into your schedule, you can’t get there cheaper or faster.

A three hour delay to board and then another hour on the tarmac because they couldn't get a tractor? Ugh.

Allegiant canceled the flight. The flight the next day was full. Allegiant did not provide any compensation besides a refund. Last time on Allegiant.

Seats were very uncomfortable and being charged for snacks and water.........

Allegiant actually impressed me, original inbound flight from PBG was so late they gave us a bird inbound from Des Moines and only left 1h late and gained 40 minutes back in the air. Comfortable flight with no frills but no complaints.

The plane had originated in Las Vegas at 6:30 in the morning and flew to Moline where we boarded. The flight left around 12:30 PM and there were no boxed snacks available and many of the alcoholic beverages were unavailable. I would find it hard to believe that that many of the passengers coming from Las Vegas at 6:30 in the morning, drank and ate that much of the items. I can only come to the conclusion that someone failed to stock the plane for the round-trip. This is a huge revenue failure for the airline and disappointment for the passengers. The flight crew did not seem happy to be there and did not engage with passengers. Allegiant you can do better.

Posted a 20minute delay but didn’t delay at all. Caused boarding issues and confusion. Also, didn’t release baggage. Took over an hour and 20 minutes to get luggage.

I went to lower my tray table and it was very nasty. Looks like some one had left some food on it and then just closed it up.

Everything was delayed and the staff sent me to the wrong gate, causing me to miss one of my flights. I arrived at my destination 6 hours later than I was supposed to.

On the return flight, arriving in Denver we sat on the tarmac in Denver for over 20 minutes.

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.

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.

Our bags took a long time to get unloaded once we landed.

Terrible. The flight was delayed two hours due to weather. Then when we got on the plane, the first pilot ended up timing out and we had to wait for a second pilot. Second pile came on board and we tax it out. Had to return back to the gate because of an unruly passenger. Then the copilot timed out. Had to wait for new copilot. Also had to wait for maintenance to check for fuel. Then found out the second pilot timed out and we had to wait for a third pilot. Was ready to go and then needed maintenance again for another issue. In the end, it was 2 o’clock in the morning when they announced that the flight couldn’t go because the third pilot and the second copilot had timed out.

One of the best flights I’ve had. So smooth.

Because I can’t stand very long in one place, I was allowed to reword.

Flight to Phoenix was delayed 1 hour and was not weather related. Flight Denver was delayed 2.5 hours and again was not weather related as the plane came from San Francisco.

Flight was late because our pilots were late. Also the air vents above our seat didn't work.

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

Information on your arrival and departure airports