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Oshkosh

$89+ Cheap flights from Denver (DEN) to Oshkosh, WI

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 6/29. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — MKE
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Oshkosh are usually found in August or October, booked 77 days in advance, depart on a Thursday or Monday and return on a Sunday

Cheap flight deals from Denver to Oshkosh

Cheapest flights from Denver to Oshkosh
Explore the most affordable flight options available from Denver to Oshkosh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.

This Booking.com deal was found by Cheapflights users on 3/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/297:34 pm
DEN
-
ATW
Nonstop2h 15m
Allegiant Air
Mon 6/15:05 pm
ATW
-
DEN
Nonstop2h 39m
Allegiant Air
Deal found 3/8$90
This Cheapflightsfares deal was found by Cheapflights users on 3/9. 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.
Mon 6/297:29 pm
DEN
-
ATW
Nonstop2h 15m
Allegiant Air
Fri 7/34:57 pm
ATW
-
DEN
Nonstop2h 31m
Allegiant Air
Deal found 3/9$146
This Cheapflightsfares deal was found by Cheapflights users on 3/6. 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 5/228:04 pm
DEN
-
ATW
Nonstop2h 15m
Allegiant Air
Mon 5/255:05 pm
ATW
-
DEN
Nonstop2h 39m
Allegiant Air
Deal found 3/6$151
This American Airlines deal was found by Cheapflights users on 3/9. 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 4/157:36 am
DEN
-
ATW
1 stop4h 24m
American Airlines
Sat 4/186:31 pm
ATW
-
DEN
1 stop6h 28m
American Airlines
Deal found 3/9$169
This American Airlines deal was found by Cheapflights users on 3/9. 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 4/1511:59 pm
DEN
-
ATW
2 stops9h 28m
American Airlines
Mon 4/206:31 pm
ATW
-
DEN
1 stop5h 14m
American Airlines
Deal found 3/9$174
This American Airlines deal was found by Cheapflights users on 3/8. 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.
Thu 4/1611:59 pm
DEN
-
ATW
2 stops9h 28m
American Airlines
Tue 4/211:26 pm
ATW
-
DEN
2 stops9h 33m
American Airlines
Deal found 3/8$179
This American Airlines deal was found by Cheapflights users on 3/7. 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 3/245:58 pm
DEN
-
ATW
1 stop4h 21m
American Airlines
Mon 3/306:39 pm
ATW
-
DEN
1 stop4h 58m
American Airlines
Deal found 3/7$189
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Mon 4/201:13 pm
DEN
-
ATW
1 stop8h 34m
American Airlines
Mon 4/276:31 pm
ATW
-
DEN
1 stop6h 28m
American Airlines
Deal found 3/9$208

Find flight deals from Denver to Oshkosh

Keep the following information in mind while searching for Denver to Oshkosh flight deals. Data was last updated March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$90
(Booking.com)

One-way from

$89
(Cheapflightsfares)

Popular in

November

Cheapest in

August

Average price

$303
Provider with most accurate pricing for Denver Intl-Appleton Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Appleton Intl flights.
Search Deals
From Denver Intl to Oshkosh
Search Deals
One-way flight from Denver Intl to Oshkosh
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($46 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Oshkosh 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 March 10, 2026.
Use the filters below to find and compare flights from Denver to Oshkosh that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Tue 9/1

3:35 pm-10:48 pm

1 stop6h 13m

Appleton Intl

Sun 9/6

8:30 am-10:14 am

Nonstop2h 44m

$239

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Fri 6/12

5:40 pm-9:04 pm

Nonstop2h 24m

Appleton Intl

Mon 6/15

8:10 pm-12:53 am

1 stop5h 43m

$239

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Fri 6/12

5:40 pm-9:04 pm

Nonstop2h 24m

Appleton Intl

Sun 6/14

8:10 pm-12:53 am

1 stop5h 43m

$239

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Sun 4/26

6:30 am-11:22 am

1 stop3h 52m

Appleton Intl

Thu 5/7

6:18 pm-10:58 pm

1 stop5h 40m

$249

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Wed 6/24

6:45 am-12:46 pm

1 stop5h 01m

Appleton Intl

Mon 6/29

5:20 pm-9:38 pm

1 stop5h 18m

$249

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Wed 5/13

6:00 am-11:51 am

1 stop4h 51m

Appleton Intl

Tue 5/19

6:18 pm-10:58 pm

1 stop5h 40m

$249

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Tue 6/16

9:00 am-3:33 pm

1 stop5h 33m

Appleton Intl

Tue 6/23

4:05 pm-10:29 pm

1 stop7h 24m

$249
Quickest round-trip

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Thu 5/28

5:40 pm-9:04 pm

Nonstop2h 24m

Appleton Intl

Wed 6/3

8:45 am-10:31 am

Nonstop2h 46m

$254

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Fri 9/4

5:40 pm-9:06 pm

Nonstop2h 26m

Appleton Intl

Sun 9/6

8:30 am-10:14 am

Nonstop2h 44m

$274

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Wed 4/15

5:32 pm-9:05 pm

Nonstop2h 33m

Appleton Intl

Wed 4/22

10:30 am-4:29 pm

1 stop6h 59m

$275

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/9

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Denver to Oshkosh

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

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

Use this chart to determine the optimal time to book a round-trip flight from Denver to Oshkosh. Price data was last updated on March 6, 2026.

The price you pay for your flight from Denver to Oshkosh may vary depending on when you book. For the best chance of a lower fare, look to book 77 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, September is the cheapest month in which you can book a flight from Denver to Oshkosh (average of $61). Flying from Denver to Oshkosh 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 DEN to OS9?

Find hourly flight availability from Denver to Oshkosh. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 10, 2026.

It’s typically best to fly out from Denver to Oshkosh in the evening. Doing so could potentially save you 24% on the flight price compared to flying at noon, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Denver to Oshkosh. Price data was last updated on February 21, 2026.

Travelers seeking maximum savings on their Denver to Oshkosh flight should consider departing on Sunday afternoons when fares are most often at their lowest. Monday at noon 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 Denver to Oshkosh?

Reviews of airlines servicing Oshkosh

Get insights into the airlines that provide service to Oshkosh. 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 Oshkosh. Reviews last updated March 10, 2026.
Peruse reviews from past customers who have flown with Delta,United Airlines, andAllegiant Air from Denver to Oshkosh to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,276 reviews

Overall

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Comfort

7.9

Food

7.2

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
8,276 reviews
Delta
7.9
Good
8,276 reviews

Overall

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Comfort

7.9

Food

7.2

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
9,409 reviews
Delta
7.9
Good
8,276 reviews

Overall

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Comfort

7.9

Food

7.2

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
7.3
Good
714 reviews
Delta
7.9
Good
8,276 reviews

Overall

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Comfort

7.9

Food

7.2

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
7.1
Good
11,414 reviews
Delta
7.9
Good
8,276 reviews

Overall

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Comfort

7.9

Food

7.2

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 Denver to Oshkosh. 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 from for flights from Denver to Oshkosh?

    If you book a flight to Oshkosh from Denver, you will be flying from Denver Intl, which is the city’s only airport. Denver Intl (DEN) is located 18.5 mi from the center of Denver. There is 1 flight from Denver Intl to Oshkosh per day from 6 different airlines.

  • How popular is this Denver to Oshkosh flight route?

    This flight path from Denver Intl to Oshkosh was viewed by 2 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 Denver to Oshkosh?

    A quick flight from Denver to Oshkosh can take about 3h 52m. United Airlines provides one of the quickest options available for as low as $249. Airlines will cover a distance of 880 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    One-way options have recently been found by users for as low as $58 on Allegiant Air. Other airlines that offer cheap prices include Delta from $168 and United Airlines from $208 one-way.

  • What are the cheapest flights from Denver to Oshkosh?

    The cheapest flight price from Denver to Oshkosh is $59. On average you can expect to pay $324. The most popular route, (Denver Intl - Appleton Intl), can usually be booked for $109.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Denver to Oshkosh (average of $61). Flying from Denver to Oshkosh 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

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Top 6 airlines flying from Denver to Oshkosh

Discover the top 6 airlines that operate flights from Denver to Oshkosh. 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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$61Average$151FlexibilityNo cancel feeOn-time88%
FrontierCheapest$69Average$194FlexibilityNo cancel feeOn-time62%
DeltaCheapest$125Average$350FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$180Average$370FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$207Average$367FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$213Average$342FlexibilityNo cancel feeOn-time71%

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