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$106+ Cheap flights from Oshkosh, WI to Denver (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 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — DEN
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheapflights Tip: The best prices from Oshkosh to Denver Intl are usually found in June or July, booked 88 days in advance, depart on a Sunday or Thursday and return on a Thursday

Cheap flight deals from Oshkosh to Denver

Cheapest flights from Oshkosh to Denver
Explore the most affordable flight options available from Oshkosh to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

This Delta deal was found by Cheapflights users on 12/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/205:15 pmATW - DEN
1 stop6h 17mDelta
Wed 12/316:00 amDEN - ATW
1 stop4h 32mDelta
Deal found 12/2$249
This United Airlines deal was found by Cheapflights users on 12/1. 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 12/205:23 pmATW - DEN
1 stop7h 15mUnited Airlines
Sat 3/75:20 pmDEN - ATW
Nonstop2h 31mUnited Airlines
Deal found 12/1$257
This United Airlines deal was found by Cheapflights users on 12/3. 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.
Sun 12/215:23 pmATW - DEN
1 stop7h 15mUnited Airlines
Sat 12/276:00 amDEN - ATW
1 stop7h 33mUnited Airlines
Deal found 12/3$266
This Delta deal was found by Cheapflights users on 12/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2212:12 pmATW - DEN
1 stop5h 36mDelta
Mon 12/296:00 amDEN - ATW
1 stop4h 32mDelta
Deal found 12/2$274
This United Airlines deal was found by Cheapflights users on 12/4. 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.
Tue 12/235:23 pmATW - DEN
1 stop7h 15mUnited Airlines
Wed 12/315:25 pmDEN - ATW
Nonstop2h 28mUnited Airlines
Deal found 12/4$280
This Delta deal was found by Cheapflights users on 12/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:00 amATW - DEN
1 stop5h 29mDelta
Thu 1/16:00 amDEN - ATW
1 stop4h 32mDelta
Deal found 12/3$284
This American Airlines deal was found by Cheapflights users on 12/2. 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.
Wed 12/104:06 pmATW - DEN
1 stop7h 14mAmerican Airlines
Tue 1/66:23 amDEN - ATW
2 stops10h 38mAmerican Airlines
Deal found 12/2$289
This Delta deal was found by Cheapflights users on 12/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/235:15 pmATW - DEN
1 stop6h 18mDelta
Tue 12/304:14 pmDEN - ATW
1 stop5h 55mDelta
Deal found 12/2$294
This Kiwi.com deal was found by Cheapflights users on 12/2. 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.
Thu 12/117:00 amATW - DEN
1 stop21h 58mMultiple Airlines
Wed 12/178:00 amDEN - ATW
2 stops36h 57mMultiple Airlines
Deal found 12/2$302
This Delta deal was found by Cheapflights users on 12/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/912:20 pmATW - DEN
1 stop4h 19mDelta
Wed 12/175:45 amDEN - ATW
1 stop4h 55mDelta
Deal found 12/2$304
This Kiwi.com deal was found by Cheapflights users on 12/4. 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.
Wed 12/177:00 amATW - DEN
1 stop26h 55mMultiple Airlines
Wed 12/2410:29 pmDEN - ATW
2 stops22h 55mMultiple Airlines
Deal found 12/4$305
This United Airlines deal was found by Cheapflights users on 12/2. 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 12/133:42 pmATW - DEN
1 stop7h 14mUnited Airlines
Tue 12/165:31 pmDEN - ATW
Nonstop2h 29mUnited Airlines
Deal found 12/2$307

Find flight deals from Oshkosh to Denver

Keep the following information in mind while searching for Oshkosh to Denver flight deals. Data was last updated December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$249
(Delta)

One-way from

$106
(Kiwi.com)

Popular in

March

Cheapest in

June

Average price

$358
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 Oshkosh to Denver Intl
Search Deals
One-way flight from Oshkosh to Denver Intl
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($68 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Oshkosh 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 December 4, 2025.
Use the filters below to find and compare flights from Oshkosh to Denver that are best for you.

Fly from

Oshkosh

Fly to

Denver

Route

Depart

Return

Price

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Thu 1/8

5:23 pm-9:59 pm

1 stop5h 36m

Denver Intl

Sun 1/11

6:00 am-12:00 pm

1 stop5h 00m

$249

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Sun 2/8

6:45 am-1:33 pm

1 stop7h 48m

Denver Intl

Tue 2/24

2:42 pm-9:27 pm

1 stop5h 45m

$249

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Sat 12/20

5:15 pm-10:32 pm

1 stop6h 17m

Denver Intl

Mon 12/29

6:00 am-11:32 am

1 stop4h 32m

$249

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Thu 1/8

12:03 pm-4:44 pm

1 stop5h 41m

Denver Intl

Mon 1/12

12:00 pm-9:47 pm

1 stop8h 47m

$249

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Fri 12/19

4:18 pm-10:50 pm

1 stop7h 32m

Denver Intl

Thu 1/1

6:00 am-11:32 am

1 stop4h 32m

$249

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Sat 12/20

5:15 pm-10:32 pm

1 stop6h 17m

Denver Intl

Thu 1/1

6:00 am-11:32 am

1 stop4h 32m

$249

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Mon 1/5

12:03 pm-10:31 am

1 stop23h 28m

Denver Intl

Sat 1/10

2:38 pm-8:49 pm

1 stop5h 11m

$267

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Wed 1/7

6:10 am-7:56 pm

2 stops14h 46m

Denver Intl

Wed 1/14

12:00 pm-9:47 pm

1 stop8h 47m

$272

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Sat 1/10

6:10 am-6:40 pm

2 stops13h 30m

Denver Intl

Mon 1/12

12:00 pm-9:47 pm

1 stop8h 47m

$277

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Wed 12/24

6:00 am-10:29 am

1 stop5h 29m

Denver Intl

Thu 1/1

6:00 am-11:32 am

1 stop4h 32m

$284

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Showing 1-10 of 20 results
1
2

Best time to book a flight from Oshkosh to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Oshkosh 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 Oshkosh to Denver

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

Use this chart to determine the optimal time to book a round-trip flight from Oshkosh to Denver. Price data was last updated on November 28, 2025.

The best time to book flights from Oshkosh to Denver is 88 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 Oshkosh to Denver?

Currently, February is the cheapest month in which you can book a flight from Oshkosh to Denver (average of $36). Flying from Oshkosh to Denver in January is currently the most expensive (average of $209). 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 OS9 to DEN?

Find hourly flight availability from Oshkosh 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 December 4, 2025.

It’s typically best to fly out from Oshkosh to Denver in the evening. Doing so could potentially save you 50% on the flight price compared to flying in the morning, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Oshkosh to Denver. Price data was last updated on November 29, 2025.

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

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 December 4, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Oshkosh 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
7.9
Good
8,011 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,011 reviews
Delta
7.9
Good
8,011 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,066 reviews
Delta
7.9
Good
8,011 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,047 reviews
Delta
7.9
Good
8,011 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Allegiant Air
7.2
Good
698 reviews
Delta
7.9
Good
8,011 reviews

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

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

  • What airport do you fly into for flights to Denver from Oshkosh?

    For a flight from Oshkosh to Denver, you will be flying into Denver Intl. Denver Intl (DEN) is just 18.5 mi from the center of the city. Denver Intl is the only Denver airport and it handles 1 inbound flight from Oshkosh per day. 6 airlines have flights to Denver Intl from Oshkosh on a regular basis.

  • How popular is this Oshkosh to Denver flight route?

    Within the past month, 88 users have taken a look at flights from Oshkosh to Denver Intl.

  • How long is the flight from Oshkosh to Denver?

    Departing from Oshkosh to Denver will take you 5h 36m. Airlines will cover a distance of 880 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    For one-way options, check prices for Allegiant Air. According to our data, you can fly for as low as $61. Users have also found prices from $89 and $168 on American Airlines and Delta, respectively.

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

    The top 3 most reliable airlines when flying from Oshkosh to Denver are United Airlines (84%), SkyWest Airlines (83%) and Frontier (78%).

  • What are the cheapest flights from Oshkosh to Denver?

    The cheapest flight price from Oshkosh to Denver is $129. On average you can expect to pay $423. The most popular route, (Appleton Intl - Denver Intl), can usually be booked for $219.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Oshkosh 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 Oshkosh to Denver?

    Currently, February is the cheapest month in which you can book a flight from Oshkosh to Denver (average of $36). Flying from Oshkosh to Denver in January is currently the most expensive (average of $209). 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
Broomfield
Lakewood
Golden
Winter Park
Thornton
Greeley
Lone Tree
Cripple Creek
Silverthorne
Central City
Frisco
Wheat Ridge
Manitou Springs
Fort Morgan
Brighton
Longmont
Idaho Springs
Parker

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Alternative routes for Oshkosh to Denver

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Oshkosh to Denver

Discover the top 6 airlines that operate flights from Oshkosh 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$54Average$187FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$98Average$175FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$176Average$396FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$185Average$323FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$207Average$368FlexibilityNo cancel feeOn-time63%
DeltaCheapest$216Average$367FlexibilityNo cancel feeOn-timeN/A

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