ATW - DEN

$89 Find Cheap Flights from Appleton 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 Appleton to Denver departing on 7/13. 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 Appleton 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 Appleton to Denver, as well as popular online travel agencies
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41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$231
Typical prices: $358-$167
Allegiant Air
Mon 6/15Fri 7/3
ATW - DEN • Non-stop
Cheapest one-way
$89
Typical prices: $111-$213
Allegiant Air
Mon 7/13
ATW - DEN • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Allegiant's Bonus bundle includes carry-on and seat selection.
United's Economy Plus offers extra legroom for comfort.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $236 (round-trip)
Best reviews • 7.9 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 3h 00m
Direct flights
Direct flights
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Direct flights
Direct flights
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When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 32% compared to booking last minute.
Insights
Insights
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Insights
When to travel
Cheapest • 28% price drop
Most popular
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Denver!
Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Appleton to Denver (ATW-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Appleton 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 Appleton to Denver

Mon, Jun 15 - Fri, Jul 3
Allegiant Air Logo
4:58 pm - 6:39 pm
ATW
-
DEN
2h 41mnonstop
Allegiant Air Logo
7:18 pm - 10:39 pm
DEN
-
ATW
2h 21mnonstop
$231Allegiant Air
Mon, Aug 10 - Fri, Aug 14
Allegiant Air Logo
5:08 pm - 6:49 pm
ATW
-
DEN
2h 41mnonstop
Allegiant Air Logo
7:39 pm - 11:00 pm
DEN
-
ATW
2h 21mnonstop
$235Allegiant Air
Fri, May 22 - Fri, May 29
Allegiant Air Logo
5:35 pm - 7:14 pm
ATW
-
DEN
2h 39mnonstop
Allegiant Air Logo
7:34 pm - 10:49 pm
DEN
-
ATW
2h 15mnonstop
$236Allegiant Air
Fri, Jun 5 - Mon, Jun 8
Allegiant Air Logo
4:58 pm - 6:39 pm
ATW
-
DEN
2h 41mnonstop
Allegiant Air Logo
7:29 pm - 10:44 pm
DEN
-
ATW
2h 15mnonstop
$237Allegiant Air
Fri, Jul 31 - Fri, Aug 7
Allegiant Air Logo
4:57 pm - 6:28 pm
ATW
-
DEN
2h 31mnonstop
Allegiant Air Logo
7:39 pm - 11:00 pm
DEN
-
ATW
2h 21mnonstop
$238Allegiant Air
Fri, May 22 - Mon, May 25
Allegiant Air Logo
5:35 pm - 7:14 pm
ATW
-
DEN
2h 39mnonstop
Allegiant Air Logo
7:34 pm - 10:49 pm
DEN
-
ATW
2h 15mnonstop
$242Allegiant Air
Fri, Sep 25 - Mon, Sep 28
Allegiant Air Logo
5:29 pm - 7:00 pm
ATW
-
DEN
2h 31mnonstop
Allegiant Air Logo
3:48 pm - 7:05 pm
DEN
-
ATW
2h 17mnonstop
$243Allegiant Air
Fri, Jun 12 - Mon, Jun 29
Allegiant Air Logo
4:58 pm - 6:39 pm
ATW
-
DEN
2h 41mnonstop
Allegiant Air Logo
7:29 pm - 10:44 pm
DEN
-
ATW
2h 15mnonstop
$244Allegiant Air
Wed, Jun 3 - Fri, Jun 5
Multiple Airlines Logo
7:30 am - 12:09 am
ATW
-
DEN
17h 39m
2 stops
Multiple Airlines Logo
7:29 pm - 10:44 pm
DEN
-
ATW
2h 15mnonstop
$247Multiple Airlines
Fri, Jun 5 - Mon, Jun 8
Allegiant Air Logo
4:58 pm - 6:39 pm
ATW
-
DEN
2h 41mnonstop
Allegiant Air Logo
7:29 pm - 10:44 pm
DEN
-
ATW
2h 15mnonstop
$248Allegiant Air
Booking Insights

KAYAK's insights & trends for Appleton to Denver flights

Get data-powered insights and trends into flights from Appleton 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 Appleton 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 Appleton to Denver departing in June.

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

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

When flying from Appleton to Denver, you should consider leaving on a Sunday and avoid Mondays if you are looking for the best rates. For your return to Appleton, you’ll find the best rates on Thursdays and the most expensive ones on Fridays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Appleton 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 Appleton to Denver is July, where tickets cost $228 (return) on average. On the other hand, the most expensive months are March and January, where the average cost of round-trip tickets is $441 and $382 respectively.

Can I save money by flying with a layover from Appleton 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 $347, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Appleton 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 Appleton 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 Appleton to Denver, you should book around 4 weeks before departure, which saves you about 32% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Expert advice

Expert advice for your flight from Appleton to Denver

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Daniel Scheffler

Daniel Scheffler

Expert on Allegiant Air

Daniel Scheffler is a travel writer, podcaster, and producer. Born in Africa, bred in Europe and now living in America he has traveled to 140 countries (and all 50 U.S. states). Plus he has stayed at over 2500 hotels across the globe. His original shows Everywhere and Without Maps (available on Spotify) showcase his beliefs, travel is about humanity and sharing that beauty. And thus it reminds you that you shouldn’t believe everything you think.

Good to know

Low seasonJanuary
Cheapest flight$89
Best time to beat the crowds but there is an average 20% increase in price.
Most popular time to fly and prices are also 23% lower on average.
Flight from Appleton to Denver

When to book flights from Appleton to Denver

Are your dates flexible? Find out the best times to travel from Appleton 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 Appleton to Denver

  • What is the cheapest flight from Appleton to Denver?

    In the last 3 days, the lowest price for a flight from Appleton to Denver was $131 for a one-way ticket and $236 for a round-trip.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

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

    JetBlue, and American Airlines offer inflight Wi-Fi service on the Appleton to Denver flight route.

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

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

  • Which airline alliances offer flights from Appleton to Denver?

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

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

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

  • Which is the best airline for flights from Appleton to Denver, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Appleton to Denver are Delta and United Airlines. With an average price for the route of $301 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $390 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Appleton 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 Appleton to Denver.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Appleton 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 Appleton 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 Appleton with another airline. Booking your flights between Appleton 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 Appleton 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 Appleton 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 Appleton to Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $142 or less one-way and $288 or less round-trip.

Prefer to fly direct from Appleton to Denver?

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

Direct departures

Appleton Intl to Denver Intl

Monday

United Airlines,Allegiant Air

United Airlines,Allegiant Air

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines,Allegiant Air

United Airlines,Allegiant Air

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Denver Intl to Appleton Intl

Monday

United Airlines,Allegiant Air

United Airlines,Allegiant Air

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines,Allegiant Air

United Airlines,Allegiant Air

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Reviews of the top 4 airlines serving from Appleton to Denver

 
See real verified KAYAK customer reviews for airlines flying from Appleton 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 Appleton 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.
7.9
DeltaOverall score based on 8367 reviews
7.9Comfort
8.1Boarding
8.5Crew
7.8Entertainment
7.2Food
Airline reviews

Arlene was a great flight attendant. I also liked how one of the other flight attendants gave us a heads up about snacks and asked everyone to remove their headphones when it was their turn to order. Good idea.

10.0 ExcellentAnonymous, Mar 2026
SAT - LAX
Read more Delta reviews

Arlene was a great flight attendant. I also liked how one of the other flight attendants gave us a heads up about snacks and asked everyone to remove their headphones when it was their turn to order. Good idea.

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

I haven’t flown economy in over 20 years but it was not bad. Room by my feet for my bag and seat was roomy enough. Surprised in a good way.

The flight was delayed 90 minutes The Gate was wrong The Restroom on Aircraft was not clean There was a half used water bottle in my seat

Delta is always a wonderful experience. A clean plane and the crew is really friendly.

Too many people are taking up space in the overhead bins with their extra piece of luggage. Since they cannot fit their backpacks or extra luggage piece under the seat in front of them, they store it in the overheads and thus taking up room for other passengers. It wasn’t only one or two persons; more like 12 or 13 passengers.

This was the worse experience. They delayed our flight twice and we still had to find another flight to get home sooner which was alos delayed. Also, the flight attendant named Ginny on DL9890 leaving at 4:13pm on 3/23/26 was extremely rude.

I love Delta the flight attendants were personable and the flight arrived 1/2 earlier thanks expected. All a plus. The gate agent was a bit flustered but even with that I still had a good experience. Her supervisor assisted me.

Got to fly my favorite plane, the Boeing 767-400ER, to Milan. The soft blush pink mood lighting during meal service was very beautiful and gorgeous. The service was top-notch, and our flights were on time. I highly recommend Delta.

I am still at the Airport! Delayed Delayed and Delyaed

During landing. 2 crew members passed 3 times by my lane and didn't notice that people in front of us had their site to the furthermore reclined... That was uncomfortable and could have been dangerous.

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.

It was cold on the flight. The crew was very pleasant. I didn't order any food. We were delayed due to Captain waiting on maintenance log. He kept us informed though. The flight itself was smooth. I would definitely fly with Allegiant again!

I had a fantastic experience with Allegiant. I had wheelchair assistance and they helped me find my luggage and brought me to my car. Even loaded my luggage. Wonderful service!! Thank you Allegiant!

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.

Better snacks but flight and crew were amazing on this flight

Found that the plane used for this short flight is smaller and therefore the seats are really squeezed tight.

It was the most un-special flight experience in my life.

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

Flight was on-time, boarding was flawless and the crew was friendly.

The staff are very, very professional. It's what flying should feel like.

Flight boarded from Gate 159B, the farthest gate in the LAX Bradley Terminal. While the flight operated on time, the first class cabin attendant made no recognition of my being an Advantage Executive Platinum member.

The flight itself was excellent but the gate attendant made me check my carryon since she said it was an inch too big. I’ve had no problems with this carryon on recent flights on Qantas, Delta, Austrian, Southwest Airlines even though the overhead bins are the same size. there were other carryons in the bins that also looked larger than mine and there was room left in the bins for more. When I picked up my carryon from baggage claim one of the wheels had broken off.

The flight changed gates multiple times and flight had to be delayed multiple times

We called Kayak for a change due to the TSA situation in Atlanta. What we got was a canceled return flight (in error) and we had to find the mistake. Not happy with Kayak who blamed it on AA.

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

Information on your arrival and departure airports