ATW - DEN

$76 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 9/21. 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
$250
Typical prices: $376-$217
Allegiant Air
Fri 6/12Mon 6/15
ATW - DEN • Non-stop
Cheapest one-way
$76
Typical prices: $137-$248
Allegiant Air
Mon 9/21
ATW - DEN • Non-stop
Top airlines
Cheapest • from $250 (round-trip)
Best reviews • 7.9 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
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 34% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 30% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+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

Fri, Jun 12 - Mon, Jun 15
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
$250Allegiant Air
Mon, Jul 13 - Fri, Jul 17
Allegiant Air Logo
4:57 pm - 6:28 pm
ATW
-
DEN
2h 31mnonstop
Allegiant Air Logo
7:18 pm - 10:39 pm
DEN
-
ATW
2h 21mnonstop
$252Allegiant Air
Mon, Jun 15 - Fri, Jun 19
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
$253Allegiant Air
Mon, Jul 27 - Fri, Jul 31
Allegiant Air Logo
4:57 pm - 6:28 pm
ATW
-
DEN
2h 31mnonstop
Allegiant Air Logo
7:18 pm - 10:39 pm
DEN
-
ATW
2h 21mnonstop
$258Allegiant Air
Mon, Jun 22 - Fri, Jun 26
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
$259Allegiant Air
Mon, Jun 22 - Fri, Jun 26
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
$261Allegiant Air
Mon, Jun 22 - Fri, Jun 26
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
$263Allegiant Air
Fri, Jul 10 - Mon, Jul 13
Allegiant Air Logo
4:57 pm - 6:28 pm
ATW
-
DEN
2h 31mnonstop
Allegiant Air Logo
7:18 pm - 10:39 pm
DEN
-
ATW
2h 21mnonstop
$265Allegiant Air
Fri, Jun 12 - Mon, Jun 15
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
$266Allegiant Air
Mon, Jun 8 - Fri, Jun 12
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
$267Allegiant 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 Saturdays.

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 September, where tickets cost $234 (return) on average. On the other hand, the most expensive months are March and January, where the average cost of round-trip tickets is $439 and $388 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 $354, 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 34% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 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$76
Best time to beat the crowds but there is an average 16% increase in price.
Most popular time to fly and prices are also 11% 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 $76 for a one-way ticket and $250 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 Airbus A319 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 $312 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 $196 or less one-way and $293 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

Allegiant Air,United Airlines

Allegiant Air,United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

Allegiant Air,United Airlines

Allegiant Air,United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Denver Intl to Appleton Intl

Monday

Allegiant Air,United Airlines

Allegiant Air,United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

Allegiant Air,United Airlines

Allegiant Air,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 8422 reviews
7.8Comfort
8.5Crew
7.8Entertainment
7.2Food
8.1Boarding
Airline reviews

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

6.0 GoodAnonymous, May 2026
ATL - ECP
Read more Delta reviews

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

Clean planes and not take my comfort class seat away.

Weather caused a long delay, but the efficiency and updates from the pilot were helpful. We were able to make our connection fortunately.

Planes were clean, no water or snacks on either flight.

Free & relatively fast Wi-Fi. Would've liked a wider drink selection.

I continue to be satisfied with Delta’s excellent service out of LGA. The digit id works well and gets me through security in no time. Whenever possible, I choose Delta.

Was revoked with Jet Blue due to delay from Kenya Air

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

Smooth flight. Left on time, and got in 15 minutes early. Onboard video was great

For some reason, TSA Atlanta didn’t have my bag on the flight on time and they don’t have to provide Delta a reason for that.

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

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

The entertainment options on the seat back video boards were nice.

The boarding process was straightforward. One pertinent observation regarding all boarding procedures is that if an individual requires assistance or possesses a special status and is part of preboarding, it is advisable to limit the number of passengers who can preboard with them, rather than the entire, sometimes large, companion groups. The seats are uncomfortable, and the entertainment options are significantly inferior compared to other airlines. During the snack service, I requested an additional bag of snacks, but my request was denied. Initially, the flight attendant agreed to my request.becoming a strange accurate moment. The flight duration was four hours.

I had a cancelled flight because of technical issues going to my destination, and a delayed flight coming home. All told it wasn’t a total bust.

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.

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.

Flight was delayed. Crew was good but hot coffee was not available.

Great. No choice for n/a. No food or entertainment options

No food is available without purchasing it and there is no in-flight entertainment. Both of these are OK because we got an inexpensive flight from Allegiant and, otherwise, our experience was excellent.

just had water and there was plenty of leg & seat room. But then i don't weight 220#s!!

Not totally their fault- screaming kids that had zero parent intervention.

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.

Movies on my phone are great. It would be nice to have a gluten free snack option.

It was what i expected. I like the movies you can access from your phone. It would be nice if there was a gluten free snack offered. But I did bring my own snack knowing there would not be a gluten free option

The flight was peaceful, just s slight turbulence, pilots and crews were all nice and made a great job! Arrived safely in the Philippines. Thank you ya’ll!

Ontario airport boarding was very easy to park and access, is clean and TSA took 10 minutes total. Check-in was a breeze and cruise was very nice.

American Airlines II: Delay Boogaloo. Multiple gate changes, delays, boarded and then MORE delays. I hate to say this won’t matter, but posting stuff about major corporations in 2026 is a post-modern “scream into the void.” Was multiple hours late coming home, so there you go.

Awful, tons of delays, I got into Chicago multiple hours late meaning I hit the very traffic I tried so desperately to avoid. Just empty apologies from American Airlines text alerts. Trash behavior from a trash airline.

The flight attendants were very friendly, efficient, and helpful. The plane was ahead of schedule, and it all went very smoothly. Thank you.

They lost my baggage and I am still struggling to the information and update

We got delayed getting out of DFW for broken overhead bins. Once the flight got underway the captain kept the seatbelt sign lit the entire flight despite little perceptible turbulence, preventing use of the rest rooms and any sort of refreshment service in the main cabin.

Flight delays for communication overall not a good experience uncomfortable on the plane. Person in front of me reclined his seat, putting them inches from my lap.

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

Information on your arrival and departure airports