HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Denver

$154+ 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 2/22. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — DEN
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Oshkosh 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 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 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/15. 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.
Thu 12/258:16 amATW - DEN
Nonstop3h 19mUnited Airlines
Mon 12/295:25 pmDEN - ATW
Nonstop2h 28mUnited Airlines
Deal found 12/15$284
This United Airlines deal was found by Cheapflights users on 12/15. 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.
Wed 12/248:16 amATW - DEN
Nonstop3h 19mUnited Airlines
Tue 12/306:00 amDEN - ATW
1 stop7h 33mUnited Airlines
Deal found 12/15$294
This American Airlines deal was found by Cheapflights users on 12/14. 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.
Sun 12/213:58 pmATW - DEN
2 stops8h 58mAmerican Airlines
Sun 12/286:44 amDEN - ATW
1 stop7h 44mAmerican Airlines
Deal found 12/14$309
This United Airlines deal was found by Cheapflights users on 12/15. 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.
Tue 12/235:23 pmATW - DEN
1 stop7h 15mUnited Airlines
Tue 12/305:25 pmDEN - ATW
Nonstop2h 28mUnited Airlines
Deal found 12/15$316
This United Airlines deal was found by Cheapflights users on 12/14. 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 12/211:00 pmATW - DEN
1 stop5h 38mUnited Airlines
Sun 12/285:25 pmDEN - ATW
Nonstop2h 28mUnited Airlines
Deal found 12/14$319
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/248:16 amATW - DEN
Nonstop3h 19mUnited Airlines
Thu 1/15:25 pmDEN - ATW
Nonstop2h 28mUnited Airlines
Deal found 12/17$332
This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2412:12 pmATW - DEN
1 stop5h 32mDelta
Sun 12/286:00 amDEN - ATW
1 stop4h 32mDelta
Deal found 12/17$339

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 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$254
(American Airlines)

One-way from

$154
(American Airlines)

Popular in

March

Cheapest in

June

Average price

$369
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 ($67 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% 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 18, 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

8:20 am-10:35 am

Nonstop3h 15m

Denver Intl

Sun 1/11

6:00 am-2:09 pm

1 stop7h 09m

$256

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Thu 3/5

6:50 am-1:35 pm

1 stop7h 45m

Denver Intl

Sun 3/8

6:30 am-11:20 am

1 stop3h 50m

$264

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Fri 1/16

8:20 am-10:35 am

Nonstop3h 15m

Denver Intl

Mon 1/19

5:25 pm-8:50 pm

Nonstop2h 25m

$279

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Thu 2/19

8:21 am-10:35 am

Nonstop3h 14m

Denver Intl

Sun 2/22

5:20 pm-8:51 pm

Nonstop2h 31m

$279

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Sun 2/8

2:45 pm-8:13 pm

1 stop6h 28m

Denver Intl

Tue 2/24

5:20 pm-8:51 pm

Nonstop2h 31m

$289

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Thu 1/8

3:39 pm-9:59 pm

1 stop7h 20m

Denver Intl

Tue 1/13

5:25 pm-8:50 pm

Nonstop2h 25m

$289

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Mon 1/26

2:45 pm-8:13 pm

1 stop6h 28m

Denver Intl

Mon 2/2

5:25 pm-8:50 pm

Nonstop2h 25m

$289

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Wed 12/24

8:16 am-10:35 am

Nonstop3h 19m

Denver Intl

Thu 1/1

6:00 am-12:15 pm

1 stop5h 15m

$294

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Thu 2/19

6:31 pm-10:36 pm

1 stop5h 05m

Denver Intl

Tue 2/24

12:19 pm-8:28 pm

1 stop7h 09m

$304

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Wed 12/24

11:00 am-5:32 pm

1 stop7h 32m

Denver Intl

Thu 1/1

6:00 am-11:32 am

1 stop4h 32m

$304

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

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 December 12, 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 $181). 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 18, 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 December 13, 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.

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 December 18, 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
8,005 reviews

Entertainment

7.9

Boarding

8.1

Overall

7.9

Food

7.3

Crew

8.5

Comfort

7.9

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
8,005 reviews
Delta
7.9
Good
8,005 reviews

Entertainment

7.9

Boarding

8.1

Overall

7.9

Food

7.3

Crew

8.5

Comfort

7.9

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
9,091 reviews
Delta
7.9
Good
8,005 reviews

Entertainment

7.9

Boarding

8.1

Overall

7.9

Food

7.3

Crew

8.5

Comfort

7.9

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
11,054 reviews
Delta
7.9
Good
8,005 reviews

Entertainment

7.9

Boarding

8.1

Overall

7.9

Food

7.3

Crew

8.5

Comfort

7.9

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
8,005 reviews

Entertainment

7.9

Boarding

8.1

Overall

7.9

Food

7.3

Crew

8.5

Comfort

7.9

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, 82 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 3h 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 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 SkyWest Airlines (80%), Frontier (77%) and Southwest (73%).

  • What are the cheapest flights from Oshkosh to Denver?

    The cheapest flight price from Oshkosh to Denver is $162. On average you can expect to pay $352. The most popular route, (Appleton Intl - Denver Intl), can usually be booked for $212.

  • 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 $181). 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
Thornton
Broomfield
Westminster
Winter Park
Golden
Greeley
Lone Tree
Lakewood
Cripple Creek
Silverthorne
Central City
Frisco
Wheat Ridge
Manitou Springs
Fort Morgan
Brighton
Longmont
Idaho Springs
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.

Alternative routes for Oshkosh to Denver

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Denver flights
Minneapolis to Denver flights
Appleton to Denver flights
Madison to Denver flights
Milwaukee to Denver flights
O'Hare Intl to Vail flights
O'Hare Intl to Hayden flights
O'Hare Intl to Aspen flights
O'Hare Intl to Colorado Springs flights
O'Hare Intl to Montrose flights
Milwaukee to Hayden flights
Minneapolis to Hayden flights
Minneapolis to Aspen flights
Green Bay to Denver flights
Minneapolis to Durango flights
Minneapolis to Vail flights
Minneapolis to Colorado Springs flights
Minneapolis to Montrose flights
Milwaukee to Colorado Springs flights
O'Hare Intl to Grand Junction flights
Minneapolis to Grand Junction flights
Milwaukee to Aspen flights
Duluth to Denver flights
Milwaukee to Grand Junction flights
O'Hare Intl to Durango flights
Appleton to Colorado Springs flights
O'Hare Intl to Gunnison flights
Eau Claire to Denver flights
Minneapolis to Gunnison flights
Madison to Colorado Springs flights
Milwaukee to Vail flights
Wausau to Denver flights
Appleton to Grand Junction flights
Madison to Grand Junction flights
Green Bay to Colorado Springs flights
Madison to Aspen flights
Madison to Montrose flights
Green Bay to Aspen flights
Milwaukee to Montrose flights
Madison to Durango flights
Appleton to Aspen flights
Milwaukee to Gunnison flights
Milwaukee to Durango flights
La Crosse to Denver flights
Rhinelander to Denver flights
Rhinelander to Grand Junction flights
Appleton to Durango flights
Wausau to Colorado Springs flights
Dubuque to Denver flights
Escanaba to Colorado Springs flights

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 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$55Average$187FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$98Average$176FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$176Average$395FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$185Average$324FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$206Average$369FlexibilityNo cancel feeOn-time63%
DeltaCheapest$216Average$364FlexibilityNo 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.