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$120+ 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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
ATW — DEN
Oct 18 — Oct 251
Sat 10/18
Sat 10/25
1 adult, Economy
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Cheapflights Tip: The best prices from Appleton Intl to Denver Intl are usually found in June or July, booked 82 days in advance, depart on a Sunday or Thursday and return on a Thursday

Cheap 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 September 18, 2025.

Round-trip from

$175
(Cheapflightsfares)

One-way from

$120
(American Airlines)

Popular in

March

Cheapest in

June

Average price

$228

Good round-trip deal

$222 or less

Good one-way deal

$192 or less
From Appleton Intl to Denver Intl
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One-way flight from Appleton Intl to Denver Intl
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Highest demand for flights based on searches. 15% potential increase in price ($60 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Appleton Intl to Denver Intl.
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Price to beat on a one-way flight from Appleton Intl to Denver Intl.
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Find 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 September 18, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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.
Sun 10/124:55 pmATW - DEN
Nonstop2h 37mAllegiant Air
Thu 10/235:52 pmDEN - ATW
Nonstop2h 15mAllegiant Air
Deal found 9/17$175
This American Airlines deal was found by Cheapflights users on 9/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/16:13 pmATW - DEN
1 stop5h 18mAmerican Airlines
Wed 11/512:33 pmDEN - ATW
1 stop5h 39mAmerican Airlines
Deal found 9/16$179
This Cheapflightsfares deal was found by Cheapflights users on 9/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/213:20 pmATW - DEN
Nonstop2h 34mAllegiant Air
Sun 9/285:44 pmDEN - ATW
Nonstop2h 17mAllegiant Air
Deal found 9/16$190
This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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.
Sun 10/124:55 pmATW - DEN
Nonstop2h 37mAllegiant Air
Thu 10/167:22 pmDEN - ATW
Nonstop2h 15mAllegiant Air
Deal found 9/17$198
This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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.
Sun 9/283:20 pmATW - DEN
Nonstop2h 34mAllegiant Air
Sun 10/55:52 pmDEN - ATW
Nonstop2h 15mAllegiant Air
Deal found 9/17$202
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Sun 10/194:55 pmATW - DEN
Nonstop2h 37mAllegiant Air
Thu 10/235:52 pmDEN - ATW
Nonstop2h 15mAllegiant Air
Deal found 9/15$207
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/188:43 amATW - DEN
Nonstop2h 52mUnited Airlines
Fri 10/245:20 pmDEN - ATW
Nonstop2h 36mUnited Airlines
Deal found 9/15$209
This American Airlines deal was found by Cheapflights users on 9/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/89:39 amATW - DEN
2 stops11h 07mAmerican Airlines
Wed 11/127:22 amDEN - ATW
1 stop6h 55mAmerican Airlines
Deal found 9/17$214

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 September 18, 2025.
Use the filters below to find and compare flights from Appleton to Denver that are best for you.

Fly from

Appleton

Fly to

Denver

Route

Depart

Return

Price

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Tue 1/20

2:45 pm-9:59 pm

1 stop8h 14m

Denver Intl

Tue 1/27

5:25 pm-8:53 pm

Nonstop2h 28m

$219

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Sat 11/8

4:17 pm-7:30 pm

1 stop4h 13m

Denver Intl

Wed 11/12

1:10 pm-10:08 pm

1 stop7h 58m

$229

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Fri 11/14

5:21 pm-11:15 pm

1 stop6h 54m

Denver Intl

Sun 11/16

6:00 am-1:57 pm

1 stop6h 57m

$229

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Sat 10/11

12:05 pm-3:42 pm

1 stop4h 37m

Denver Intl

Wed 10/15

6:05 am-11:25 am

1 stop4h 20m

$229

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Fri 10/24

5:35 pm-10:06 pm

1 stop5h 31m

Denver Intl

Sun 10/26

6:05 am-11:25 am

1 stop4h 20m

$229

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Sat 10/4

5:25 pm-10:00 pm

1 stop5h 35m

Denver Intl

Tue 10/7

2:45 pm-9:33 pm

1 stop5h 48m

$239

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Thu 10/30

6:25 am-10:00 am

1 stop4h 35m

Denver Intl

Sun 11/2

5:00 am-10:25 am

1 stop4h 25m

$239

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Sat 12/13

7:00 am-2:37 pm

1 stop8h 37m

Denver Intl

Tue 12/16

3:14 pm-10:11 pm

1 stop5h 57m

$239

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Sat 10/4

11:10 am-5:20 pm

1 stop7h 10m

Denver Intl

Tue 10/7

6:05 am-11:25 am

1 stop4h 20m

$239

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Sat 10/11

4:17 pm-7:30 pm

1 stop4h 13m

Denver Intl

Thu 10/16

6:05 am-11:25 am

1 stop4h 20m

$239

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 19 results
1
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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?

Use this chart to determine the optimal time to book a round-trip flight from Appleton to Denver. Price data was last updated on September 12, 2025.

The best time to book flights from Appleton to Denver is 82 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, October is the cheapest month in which you can book a flight from Appleton to Denver (average of $197). Flying from Appleton to Denver in March is currently the most expensive (average of $278). 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 September 18, 2025.

When flying from Appleton to Denver, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 80% versus a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from Appleton to Denver. Price data was last updated on September 14, 2025.

Travelers seeking maximum savings on their Appleton to Denver flight should consider departing on Wednesday evenings when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 September 18, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines 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
8.0
Very good
7,961 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,925 reviews
Delta
8.0
Very good
7,961 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,961 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Allegiant Air
7.2
Good
699 reviews
Delta
8.0
Very good
7,961 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • What airports do I use to fly from Appleton to Denver?

    If you wish to fly to Denver from Appleton, then you need to book flights from Appleton Intl to Denver Intl. There is 1 flight from Appleton Intl (ATW) to Denver Intl (DEN) per day to choose from. Flights to Denver from Appleton Intl are available from 4 different airlines, which means you should have some options if you want to compare airfare deals. 2h 34m is how long a nonstop flight from Appleton to Denver Intl typically takes.

  • How popular is this Appleton to Denver flight route?

    This flight path from Appleton Intl to Denver Intl was viewed by 9 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 $229, United Airlines can have you in Denver from Appleton in 4h 13m. Airlines will cover a distance of 880 mi. This flight may include one or multiple stops.

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

    Currently priced at $98, 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 Delta 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 $120 on American Airlines. Other airlines that offer cheap prices include United Airlines from $134 and Allegiant Air from $142 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 Allegiant Air (87%), SkyWest Airlines (58%) or United Airlines (58%) 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 $90. On average you can expect to pay $467. The most popular route, (Appleton Intl - Denver Intl), can usually be booked for $175.

  • 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, River North, and Grant Park. Magnificent Mile, River North, and Grant Park can be accessed by traveling approximately 15.5 mi, 15.0 mi, and 16.2 mi, respectively from Chicago O'Hare Intl. Travelers in need of a car in Chicago can rent one for about $48 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, October is the cheapest month in which you can book a flight from Appleton to Denver (average of $197). Flying from Appleton to Denver in March is currently the most expensive (average of $278). 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
Black Hawk
Westminster
Golden
Winter Park
Lakewood
Broomfield
Greeley
Lone Tree
Cripple Creek
Thornton
Silverthorne
Manitou Springs
Fort Morgan
Glendale
Wheat Ridge
Brighton
Longmont
Idaho Springs
Parker
Sterling

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Alternative routes for Appleton to Denver

See prices for flight routes from nearby airports that may be better suited for you.
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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 September 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$98Average$175FlexibilityNo cancel feeOn-time88%
DeltaCheapest$228Average$297FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$228Average$312FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$249Average$424FlexibilityNo cancel feeOn-time69%

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