ATW - DEN

$106 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 12/15. 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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Everything you should know

Cheapest round-trip
$249
Overall average: $400
United Airlines
Thu 1/8Sun 1/11
ATW - DEN • 1 stop
Cheapest non-stop
$279
Typical prices: $363-$494
United Airlines
Sun 1/18Wed 1/28
ATW - DEN • Non-stop
Our travelers' advice
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
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Video guide: How to find cheap flights to Denver
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Top airlines
United Airlines
Cheapest • from $249 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
9 weeks
in advance
Our data shows that travelers who book at least 9 weeks in advance save around 32% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
June
Cheapest • 30% price drop
June
Most popular
Good to know
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+1
+1
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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

Thu, Jan 8 - Sun, Jan 11
United Airlines Logo
5:23 pm - 9:59 pm
ATW
-
DEN
5h 36m1 stop
United Airlines Logo
6:00 am - 12:00 pm
DEN
-
ATW
5h 00m1 stop
$249United Airlines
Sat, Dec 20 - Mon, Dec 29
United Airlines Logo
8:16 am - 10:35 am
ATW
-
DEN
3h 19mnonstop
United Airlines Logo
7:45 am - 2:33 pm
DEN
-
ATW
5h 48m1 stop
$252United Airlines
Fri, Jan 23 - Tue, Jan 27
American Airlines Logo
6:32 pm - 11:16 pm
ATW
-
DEN
5h 44m1 stop
American Airlines Logo
9:01 am - 8:49 pm
DEN
-
ATW
10h 48m2 stops
$254American Airlines
Tue, Feb 10 - Thu, Feb 19
United Airlines Logo
2:45 pm - 8:13 pm
ATW
-
DEN
6h 28m1 stop
United Airlines Logo
5:20 pm - 8:51 pm
DEN
-
ATW
2h 31mnonstop
$256United Airlines
Mon, Jan 5 - Thu, Jan 8
Multiple Airlines Logo
3:39 pm - 9:10 pm
ATW
-
DEN
6h 31m1 stop
Multiple Airlines Logo
10:29 pm - 2:35 pm
DEN
-
ATW
15h 06m1 stop
$257Multiple Airlines
Fri, Jan 23 - Tue, Jan 27
American Airlines Logo
11:25 am - 9:16 pm
ATW
-
DEN
10h 51m2 stops
American Airlines Logo
9:01 am - 8:49 pm
DEN
-
ATW
10h 48m2 stops
$259American Airlines
Mon, Jan 5 - Wed, Jan 7
Multiple Airlines Logo
3:39 pm - 9:10 pm
ATW
-
DEN
6h 31m1 stop
Multiple Airlines Logo
10:29 pm - 11:21 pm
DEN
-
ATW
23h 52m1 stop
$263Multiple Airlines
Fri, Jan 16 - Tue, Jan 20
Delta Logo
12:03 pm - 4:44 pm
ATW
-
DEN
5h 41m1 stop
Delta Logo
2:42 pm - 9:29 pm
DEN
-
ATW
5h 47m1 stop
$264Delta
Sun, Dec 21 - Sat, Dec 27
United Airlines Logo
5:23 pm - 11:38 pm
ATW
-
DEN
7h 15m1 stop
United Airlines Logo
6:00 am - 2:33 pm
DEN
-
ATW
7h 33m1 stop
$266United Airlines
Mon, Jan 5 - Wed, Jan 7
Multiple Airlines Logo
7:31 pm - 5:40 pm
ATW
-
DEN
23h 09m2 stops
Multiple Airlines Logo
10:29 pm - 11:21 pm
DEN
-
ATW
23h 52m1 stop
$269Multiple Airlines
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.

Find cheap flights to Denver
Find cheap flights to Denver

Planning a trip from Appleton to Denver? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

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 June, where tickets cost $223 (return) on average. On the other hand, the most expensive months are March and January, where the average cost of round-trip tickets is $454 and $400 respectively.

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 9 weeks before departure, which saves you about 32% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 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.
Airlines
United Airlines

United's Economy Plus offers up to six inches more legroom than standard economy seats.


United's Priority Boarding puts you in Zone 2, ensuring overhead bin space for your carry-on.

Allegiant Air

Allegiant's Legroom+ offers extra space and faster deplaning, ideal for budget-conscious travelers.


Allegiant's Bonus bundle includes carry-on, seat selection, and ticket change flexibility.

Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek

Stefanie Waldek

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.

Read more
Daniel Scheffler

Daniel Scheffler

Expert on Allegiant Air

Daniel Scheffler

Daniel Scheffler

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.

Read more

Good to know

Low seasonFebruary
Cheapest flight$106
Best time to beat the crowds but there is an average 16% increase in price.
Most popular time to fly and prices are also 30% 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

  • Can passengers travel on American Airlines from Appleton to Denver with children?

    When parents travel with children from Appleton to Denver on American Airlines, they can have peace of mind knowing their children will have a safe and comfortable journey. American Airlines offers special provisions for children under two years old, including priority boarding and safety seats with secure back and seat structures and restraining straps to ensure the child's safety.

  • Can passengers from Appleton travel to other cities after landing?

    Upon arrival at Denver International Airport (DEN), you have the convenience of traveling to a multitude of destinations both within Colorado and beyond. Whether you desire to visit nearby locations like Boulder, Aspen, Colorado Springs, and Vail or explore other domestic and international destinations, Denver International Airport provides a wide range of flight options, ensuring you can continue your journey to cities across the region.

  • Can I travel with my pet from Appleton to Denver on United Airlines flights?

    When traveling with pets, United Airlines ensures a top-notch experience by prioritizing your furry companions' health, safety, and comfort. United Airlines offers exceptional pet services, accommodating pets of any species, irrespective of size or weight, with the option to have them in the cabin. Additionally, pets can be transported as cargo.

  • Which Airlines fly Business class from Appleton to Denver?

    To travel from Appleton to Denver in Business Class, you can make reservations with United Airlines or American Airlines. Opting for Business Class offers numerous advantages, including enhanced amenities for comfort. For instance, United Airlines provides passengers with on-demand entertainment through a 15-inch seatback screen and seats that can be transformed into beds, ensuring a more comfortable travel experience.

  • 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 $106 for a one-way ticket and $249 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?

    Delta, 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 $416 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 $254 or less one-way and $326 or less round-trip.
  • Delta, a famous airline offering flights from Appleton (ATW) to Denver (DEN), has set a goal to achieve carbon neutrality by 2050 by implementing measures to decarbonize its operations. To reduce its environmental impact, Delta has shifted its focus towards investing in sustainable aviation fuel and acquiring more fuel-efficient planes. This commitment by Delta to address climate change and promote sustainable practices in the aviation industry is evident in its proactive approach.
  • Passengers with limited mobility can have a great travel experience on American Airlines when flying from Appleton to Denver. American Airlines has a trained service team that assists passengers with disabilities at airports and during the flight. Additionally, they offer accessible toilets and wheelchairs to ensure the comfort and convenience of individuals who require them.
  • Getting to Downtown Denver is a straightforward process after your flight from Appleton to Denver International Airport (DEN). The airport is conveniently connected to downtown via the airport train line. The Regional Transportation District (RTD) operates the A Line, which provides transportation between the airport and Downtown Denver. A one-way trip on the A Line costs about $10.50 and allows passengers to reach their destination in Downtown Denver easily.
  • Consider booking with Allegiant Air to enjoy their generous baggage allowance policy. Passengers can bring a maximum of 5 checked bags, each at most 50 lbs. Out of these, up to 4 bags per person can be pre-booked online. However, there will be a baggage fee charged for checking luggage. Additional charges will be applicable for sporting equipment, excess baggage, overweight bags, and oversized checked bags.
  • For passengers who live far from Appleton and would like to spend a night before their flight at Appleton International Airport (ATW), consider reserving one of the airport hotels. The nearby hotels include the Hilton Garden Inn Appleton/Kimberly, Quality Inn & Suites Kimberly, Hampton Inn Appleton, Country Inn & Suites by Radisson, and GrandStay Hotel & Suites Appleton-Fox River Mall.

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

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Denver Intl to Appleton Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

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 8009 reviews
8.5Crew
8.1Boarding
7.9Entertainment
7.9Comfort
7.3Food
Airline reviews

Left on time, a bit delayed due to headwinds most of the trip.

10.0 ExcellentCharles, Dec 2025
DTW - PHX
Read more Delta reviews

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Good seats in Main cabin, excellent service and excellent landing

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

We had a lot of really rough weather but that was not Delta's fault. Pilot was amazing.

First, Delta needs more flights to/from Miami. Second, a 1000pm leaving at 1230pm is unacceptable from their biggest airport world hub. Another aircraft could have been used such as the aircraft scheduled to be used in the morning for that exact same route. Yes, I did get me there but the lack of sleep the next day didn't help me enjoy my entire trip since I was busy with activities during the weekend. This can be and is expected from Spirit (going bankrupt) and Frontier (despite they're nickel and dimers). But from Delta's World Hub? That's totally unacceptable!

This flight was straightforward and without difficulty. Service was OK, but I continue to be underwhelmed by level of attention given to Sky Priority passengers.

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Late FA meant slow boarding. WiFi did not work. I’m a medium plus sized passenger. The seatbelt was for the first time ever barely fitting. And we delayed on the tarmac 40 min

My husband and I had boarded the flight from Denver to Chicago, and one of the last passengers to get on the plane opened the overhead bin above my husband's seat and threw his bag out of the bin to make space for his own. He said, "Mine is bigger!" The flight attendant supported the new passenger. They didn't care that my husband has two artificial knees and must have the foot room in front of his seat to be able to fit his legs in -- and to be able to stand, much less walk, at the end of the flight. I have never seen this happen before, and it was a disaster.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

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

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

Very rough getting into denver. my kid threw up it was so rough.

Why wasn't this flight departure scheduled eith another crew so that it could leave on time? When we arrived in Denver we had so little time between flights we had run to the connecting flight. We should received some credit for the inconvenience.

Attendants were pleasant and the flight was smooth and relaxed.

A little late at the start but all worked out well.

It was fine. No drinks nor snacks offered though. I thought that was unusual.

I liked the humor of the captain and crew on the flight from Flagstaff to Dallas. They were humorous.

AA delayed the flight for 3 hours and 50 minutes, but delayed the last 2 hours, 30 minutes at a time, so if we knew before, could have stayed at home and worked instead of being at the airport wasting time... The plane's crew was excellent, not their fault.

After arriving in Dallas, the aircraft taxied for an unusually long time and was unable to park at the gate, which caused a significant delay and made me miss my connecting flight. I then had to wait in a very long line to be rebooked, and I was told that no hotel or meal accommodations would be provided. What is even more unacceptable is that my luggage was mishandled and has still not been located. My suitcase contains important medications that I urgently need, and I have been unable to access them due to the airline’s mishandling. This situation has caused me considerable stress and inconvenience, and I need this issue to be resolved immediately.

RIC Staff was not enough. Elderly passengers had to wait 30 minutes to deplane, so we could board and still had to walk as no chairs were provided. And, passenger in front of my seat assignment rammed seat against my legs entire flight time. Was mildly bruised and left thigh still sore.

Liked that it was on time. Staff professional and friendly.

Things were delayed a little. But that didn’t affect my plans. It was fine. I was surprised it was so full thanksgiving day. The crew were friendly and professional.

I appreciated that it was on time, safe and professional. I didn’t like that I wasn’t in a place where I had a window at my window seat. It would have been nice to know that in advance. If it was mentioned in the ticketing, I didn’t notice it.

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.

I liked how when I got on board how fast we ended up taking off but what I truly disliked was how uncomfortable the seats were. There was truly never a time that I could ever get comfortable during both of my flights. The seats could get away during shorter flights but flights 3 hour plus makes it hard to enjoy.

The crew was great and the flight was very smooth. Can’t really judge food since I did not get any because it costs money. The seat was comfortable for what we bought. Thanks!

Crew was great. No entertainment and food and beverage was for purchase only, even water

It was canceled. The flight wasn’t rescheduled, everyone had to figure out their own new arrangements. They said we would get refunded our original fare and receive an additional $150. We received links for $100 only and they expired before we could activate them.

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.

They did not let my husband on the plane with our service animal at the last minute. Do NOT fly this airline with a service animal!

Tight! Seats are not designed for those of us who wear extra-large clothes.

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

Information on your arrival and departure airports