HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Denver

$82+ Cheap flights from Appleton to Denver (ATW - DEN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/26. Fares are subject to change and may not be available on all flights or dates of travel.
ATW — DEN
Jul 19 — Jul 261
Sun 7/19
Sun 7/26
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Appleton to Denver with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Appleton Intl to Denver Intl are usually found in September or October, booked 90 days in advance, depart on a Sunday or Thursday and return on a Monday

Cheap flight deals from Appleton to Denver

Cheapest flights from Appleton to Denver
Explore the most affordable flight options available from Appleton to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 19, 2026.

This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:30 am
ATW
-
DEN
1 stop8h 03m
Multiple Airlines
Fri 9/187:50 pm
DEN
-
ATW
Nonstop2h 17m
Multiple Airlines
Deal found 6/17$234
This Mytrip deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/244:57 pm
ATW
-
DEN
Nonstop2h 31m
Allegiant Air
Mon 7/277:18 pm
DEN
-
ATW
Nonstop2h 21m
Allegiant Air
Deal found 6/18$237
This CheapOair deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/174:57 pm
ATW
-
DEN
Nonstop2h 31m
Allegiant Air
Fri 7/247:18 pm
DEN
-
ATW
Nonstop2h 21m
Allegiant Air
Deal found 6/17$239
This CheapOair deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/264:58 pm
ATW
-
DEN
Nonstop2h 41m
Allegiant Air
Mon 6/297:29 pm
DEN
-
ATW
Nonstop2h 15m
Allegiant Air
Deal found 6/16$240
This Cheapflightsfares deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/264:58 pm
ATW
-
DEN
Nonstop2h 41m
Allegiant Air
Fri 7/37:18 pm
DEN
-
ATW
Nonstop2h 21m
Allegiant Air
Deal found 6/17$242
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/105:08 pm
ATW
-
DEN
Nonstop2h 41m
Allegiant Air
Mon 8/177:39 pm
DEN
-
ATW
Nonstop2h 21m
Allegiant Air
Deal found 6/16$243
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/265:29 pm
ATW
-
DEN
Nonstop2h 31m
Multiple Airlines
Fri 10/301:34 pm
DEN
-
ATW
1 stop25h 47m
Multiple Airlines
Deal found 6/17$247
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:30 am
ATW
-
DEN
1 stop8h 03m
Multiple Airlines
Fri 10/27:50 pm
DEN
-
ATW
Nonstop2h 17m
Multiple Airlines
Deal found 6/18$248
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/264:58 pm
ATW
-
DEN
Nonstop2h 41m
Allegiant Air
Mon 7/67:18 pm
DEN
-
ATW
Nonstop2h 21m
Allegiant Air
Deal found 6/17$250

Find flight deals from Appleton to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Appleton (ATW) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$234
(Kiwi.com)

One-way from

$82
(Super.com)

Popular in

March

Cheapest in

September

Average price

$309

Good round-trip deal

$255 or less

Good one-way deal

$194 or less
Provider with most accurate pricing for Appleton Intl-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Appleton Intl-Denver Intl flights.
Search Deals
From Appleton Intl to Denver Intl
Search Deals
One-way flight from Appleton Intl to Denver Intl
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($54 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Appleton Intl to Denver Intl.
Search Deals
Price to beat on a one-way flight from Appleton Intl to Denver Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Appleton to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 19, 2026.
Use the filters below to find and compare flights from Appleton to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Fri 9/4

8:45 am-10:30 am

Nonstop2h 45m

Denver Intl

Sun 9/6

7:45 am-3:27 pm

1 stop6h 42m

$317

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Thu 7/30

8:45 am-10:31 am

Nonstop2h 46m

Denver Intl

Tue 8/4

6:00 am-2:05 pm

1 stop7h 05m

$338

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Tue 7/7

8:45 am-10:31 am

Nonstop2h 46m

Denver Intl

Sat 7/11

4:29 pm-11:23 pm

1 stop5h 54m

$364

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Fri 8/7

8:45 am-10:31 am

Nonstop2h 46m

Denver Intl

Wed 8/12

5:32 pm-8:54 pm

Nonstop2h 22m

$374

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Tue 6/30

8:45 am-10:31 am

Nonstop2h 46m

Denver Intl

Fri 7/3

5:40 pm-9:04 pm

Nonstop2h 24m

$389

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Wed 6/24

11:27 am-3:38 pm

1 stop5h 11m

Denver Intl

Sat 6/27

6:00 am-10:47 am

1 stop3h 47m

$399

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Sat 7/25

5:30 pm-11:49 pm

1 stop7h 19m

Denver Intl

Sat 8/1

4:29 pm-11:23 pm

1 stop5h 54m

$404

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Fri 8/7

5:29 pm-11:48 pm

1 stop7h 19m

Denver Intl

Mon 8/10

5:40 pm-9:04 pm

Nonstop2h 24m

$409

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Sat 8/1

5:30 pm-11:49 pm

1 stop7h 19m

Denver Intl

Wed 8/5

5:40 pm-9:04 pm

Nonstop2h 24m

$409

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Fri 7/3

11:27 am-3:38 pm

1 stop5h 11m

Denver Intl

Mon 7/6

9:19 am-3:36 pm

1 stop5h 17m

$414

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Appleton to Denver

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Appleton to Denver in June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Appleton-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Appleton-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Appleton-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Appleton-Denver flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Appleton-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Appleton to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Appleton with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

How far ahead should I book a flight from Appleton to Denver?

The best time to book flights from Appleton to Denver is 89 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Appleton to Denver?

Currently, September is the cheapest month in which you can book a flight from Appleton to Denver (average of $236). Flying from Appleton to Denver in March is currently the most expensive (average of $438). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ATW to DEN?

Find hourly flight availability from Appleton to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 19, 2026.

When flying from Appleton to Denver, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Appleton to Denver?

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated June 19, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAllegiant Air from Appleton to Denver by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,413 reviews

Food

7.2

Boarding

8.1

Crew

8.5

Overall

7.8

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.8
Good
8,413 reviews
Delta
7.8
Good
8,413 reviews

Food

7.2

Boarding

8.1

Crew

8.5

Overall

7.8

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
9,861 reviews
Delta
7.8
Good
8,413 reviews

Food

7.2

Boarding

8.1

Crew

8.5

Overall

7.8

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Allegiant Air
7.3
Good
693 reviews
Delta
7.8
Good
8,413 reviews

Food

7.2

Boarding

8.1

Crew

8.5

Overall

7.8

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
American Airlines
7.1
Good
11,695 reviews
Delta
7.8
Good
8,413 reviews

Food

7.2

Boarding

8.1

Crew

8.5

Overall

7.8

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Related info for your journey

Find useful and relevant information for your journey from Appleton to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Appleton to Denver flight route?

    This flight path from Appleton Intl to Denver Intl was viewed by 11 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Appleton to Denver?

    For as low as $317, United Airlines can have you in Denver from Appleton in 2h 45m. Airlines will cover a distance of 880 mi. All flights are typically nonstop.

  • What are the cheapest airlines flying from Appleton to Denver round-trip?

    Currently priced at $103, Allegiant Air will fly you from Appleton to Denver and back. In addition to Allegiant Air, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and American Airlines - these airlines can fly you to your destination from $228 and $228, respectively. Allegiant Air is priced at 69% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Appleton to Denver one-way?

    One-way options have recently been found by users for as low as $73 on Allegiant Air. Other airlines that offer cheap prices include American Airlines from $89 and United Airlines from $153 one-way.

  • What are the most reliable airlines from Appleton to Denver?

    No one likes to see their flight delayed. When booking a flight from Appleton to Denver consider choosing SkyWest Airlines (99%), United Airlines (94%) or Allegiant Air (33%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Appleton to Denver?

    The cheapest flight price from Appleton to Denver is $113. On average you can expect to pay $353. The most popular route, (Appleton Intl - Denver Intl), can usually be booked for $125.

  • Where are the most common layover locations when flying from Appleton to Denver?

    Appleton to Denver flights have a layover in Chicago most often.

  • What are some popular things to do or see while on a layover in Chicago?

    Most Chicago visitors opt to spend their time experiencing Magnificent Mile, Grant Park, and River North. Magnificent Mile, Grant Park, and River North can be accessed by traveling approximately 15.5 mi, 16.2 mi, and 15.0 mi, respectively from Chicago O'Hare Intl. Travelers in need of a car in Chicago can rent one for about $68 per day.

  • Where are the least popular layover locations for Appleton to Denver flights?

    Appleton to Denver flights that have layovers will least frequently stop in Minneapolis.

  • Can I find deals for flights from Appleton to Denver that include hotel bookings?

    Yes. In addition to deals on Appleton to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Appleton to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Appleton to Denver.

  • Can I find deals for business class flights from Appleton to Denver?

    Yes. Cheapflights offers flight deals from Appleton to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Appleton to Denver?

    Currently, September is the cheapest month in which you can book a flight from Appleton to Denver (average of $236). Flying from Appleton to Denver in March is currently the most expensive (average of $438). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Thornton
Black Hawk
Centennial
Westminster
Lakewood
Broomfield
Golden
Greeley
Fort Morgan
Lone Tree
Wheat Ridge
Silverthorne
Central City
Cripple Creek
Winter Park
Manitou Springs
Frisco
Englewood
Glendale
Evergreen

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 4 airlines flying from Appleton to Denver

Discover the top 4 airlines that operate flights from Appleton to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$103Average$192FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$228Average$392FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$228Average$328FlexibilityNo cancel feeOn-time71%
DeltaCheapest$228Average$316FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.