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$144+ 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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — DEN
Dec 25 — Jan 11
Thu 12/25
Thu 1/1
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

Keep the following information in mind while searching for Oshkosh to Denver flight deals. Data was last updated November 25, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$247
(United Airlines)

One-way from

$144
(United Airlines)

Popular in

March

Cheapest in

June

Average price

$349
Provider with most accurate pricing for Appleton Intl-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Appleton Intl-Denver Intl flights.
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From Oshkosh to Denver Intl
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One-way flight from Oshkosh to Denver Intl
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Highest demand for flights based on searches. 17% potential increase in price ($67 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find 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 November 25, 2025.

This United Airlines deal was found by Cheapflights users on 11/24. 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 12/166:30 amATW - DEN
1 stop6h 55mUnited Airlines
Sun 1/116:00 amDEN - ATW
1 stop5h 00mUnited Airlines
Deal found 11/24$247
This American Airlines deal was found by Cheapflights users on 11/24. 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.
Tue 12/164:06 pmATW - DEN
1 stop7h 14mAmerican Airlines
Sun 1/117:55 amDEN - ATW
2 stops8h 56mAmerican Airlines
Deal found 11/24$254
This Delta deal was found by Cheapflights users on 11/24. 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.
Fri 12/194:18 pmATW - DEN
1 stop7h 32mDelta
Thu 12/252:30 pmDEN - ATW
1 stop6h 01mDelta
Deal found 11/24$264
This United Airlines deal was found by Cheapflights users on 11/24. 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
Mon 12/297:45 amDEN - ATW
1 stop5h 48mUnited Airlines
Deal found 11/24$265
This Delta deal was found by Cheapflights users on 11/24. 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 12/1011:13 amATW - DEN
1 stop7h 14mDelta
Sun 12/145:45 amDEN - ATW
1 stop4h 55mDelta
Deal found 11/24$269
This American Airlines deal was found by Cheapflights users on 11/25. 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 12/134:08 pmATW - DEN
1 stop8h 13mAmerican Airlines
Tue 12/166:21 amDEN - ATW
2 stops11h 48mAmerican Airlines
Deal found 11/25$279
This Delta deal was found by Cheapflights users on 11/24. 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 12/1311:13 amATW - DEN
1 stop7h 14mDelta
Tue 12/165:45 amDEN - ATW
1 stop4h 55mDelta
Deal found 11/24$284
This Kiwi.com deal was found by Cheapflights users on 11/24. 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 12/111:53 pmATW - DEN
2 stops24h 53mMultiple Airlines
Tue 12/1611:00 pmDEN - ATW
1 stop11h 11mMultiple Airlines
Deal found 11/24$295
This Delta deal was found by Cheapflights users on 11/24. 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 stop15h 08mDelta
Thu 12/252:30 pmDEN - ATW
1 stop6h 01mDelta
Deal found 11/24$297
This United Airlines deal was found by Cheapflights users on 11/25. 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.
Thu 12/118:30 amATW - DEN
Nonstop3h 05mUnited Airlines
Wed 1/75:25 pmDEN - ATW
Nonstop2h 25mUnited Airlines
Deal found 11/25$299

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 November 25, 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

Wed 4/22

4:05 pm-10:29 pm

1 stop7h 24m

Denver Intl

Sun 4/26

6:10 am-11:11 am

1 stop4h 01m

$264

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Fri 4/24

4:05 pm-7:58 pm

1 stop4h 53m

Denver Intl

Sat 4/25

2:20 pm-9:27 pm

1 stop6h 07m

$264

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

$264

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Thu 1/8

12:03 pm-4:44 pm

1 stop5h 41m

Denver Intl

Mon 1/12

2:42 pm-9:47 pm

1 stop6h 05m

$264

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Sun 12/21

5:23 pm-11:38 pm

1 stop7h 15m

Denver Intl

Mon 12/29

7:45 am-2:33 pm

1 stop5h 48m

$265

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Sat 12/13

11:13 am-5:27 pm

1 stop7h 14m

Denver Intl

Tue 12/16

5:45 am-11:40 am

1 stop4h 55m

$284

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Thu 1/8

2:45 pm-8:13 pm

1 stop6h 28m

Denver Intl

Mon 1/12

5:25 pm-8:50 pm

Nonstop2h 25m

$289

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Wed 12/24

6:00 am-8:08 pm

1 stop15h 08m

Denver Intl

Thu 12/25

2:30 pm-9:31 pm

1 stop6h 01m

$297

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Thu 1/8

2:45 pm-8:13 pm

1 stop6h 28m

Denver Intl

Thu 1/15

6:00 am-12:00 pm

1 stop5h 00m

$299

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Sat 1/10

4:20 pm-8:14 pm

1 stop4h 54m

Denver Intl

Wed 1/14

7:00 am-9:29 pm

2 stops13h 29m

$302

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/24

Showing 1-10 of 22 results
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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 21, 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 November 25, 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 25, 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.

Weekly flight availability from Oshkosh to Denver

Explore weekly flight availability from Oshkosh to Denver. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated November 25, 2025.

The most flights from OS9 to DEN are scheduled on a Monday (10 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (1 on average).

How much does it cost to fly round-trip from Oshkosh 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 November 25, 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
7,999 reviews

Comfort

7.9

Boarding

8.1

Overall

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

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
7,999 reviews
Delta
7.9
Good
7,999 reviews

Comfort

7.9

Boarding

8.1

Overall

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

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
9,046 reviews
Delta
7.9
Good
7,999 reviews

Comfort

7.9

Boarding

8.1

Overall

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

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
11,038 reviews
Delta
7.9
Good
7,999 reviews

Comfort

7.9

Boarding

8.1

Overall

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

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
700 reviews
Delta
7.9
Good
7,999 reviews

Comfort

7.9

Boarding

8.1

Overall

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

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 0 inbound flights 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 7h 15m. 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 most reliable airlines from Oshkosh to Denver?

    The top 3 most reliable airlines when flying from Oshkosh to Denver are SkyWest Airlines (90%), United Airlines (87%) and Southwest (83%).

  • What are the cheapest flights from Oshkosh to Denver?

    The cheapest flight price from Oshkosh to Denver is $111. On average you can expect to pay $394. 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
Greeley
Lone Tree
Cripple Creek
Thornton
Silverthorne
Wheat Ridge
Central City
Manitou Springs
Fort Morgan
Brighton
Longmont
Idaho Springs
Parker
Sterling

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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 November 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$54Average$187FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$98Average$175FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$176Average$397FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$185Average$321FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$207Average$367FlexibilityNo cancel feeOn-time63%
DeltaCheapest$216Average$366FlexibilityNo cancel feeOn-timeN/A

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