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Oshkosh

$103+ 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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — MKE
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
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 January 26, 2026.

This Mytrip deal was found by Cheapflights users on 1/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/17:34 pm
DEN
-
ATW
Nonstop2h 15m
Allegiant Air
Mon 6/84:58 pm
ATW
-
DEN
Nonstop2h 41m
Allegiant Air
Deal found 1/24$202
This United Airlines deal was found by Cheapflights users on 1/23. 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 2/215:25 pm
DEN
-
ATW
Nonstop2h 31m
United Airlines
Tue 2/243:42 pm
ATW
-
DEN
1 stop7h 23m
United Airlines
Deal found 1/23$219
This United Airlines deal was found by Cheapflights users on 1/23. 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 2/216:00 am
DEN
-
ATW
1 stop6h 58m
United Airlines
Mon 2/235:23 pm
ATW
-
DEN
1 stop6h 43m
United Airlines
Deal found 1/23$229
This American Airlines deal was found by Cheapflights users on 1/25. 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.
Tue 2/2411:59 pm
DEN
-
ATW
2 stops8h 07m
American Airlines
Tue 3/36:39 pm
ATW
-
DEN
1 stop4h 58m
American Airlines
Deal found 1/25$234
This Kiwi.com deal was found by Cheapflights users on 1/24. 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.
Fri 6/57:29 pm
DEN
-
ATW
Nonstop2h 15m
Allegiant Air
Mon 6/84:58 pm
ATW
-
DEN
Nonstop2h 41m
Allegiant Air
Deal found 1/24$235
This United Airlines deal was found by Cheapflights users on 1/25. 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.
Tue 2/245:25 pm
DEN
-
ATW
Nonstop2h 31m
United Airlines
Tue 3/35:23 pm
ATW
-
DEN
1 stop6h 43m
United Airlines
Deal found 1/25$240
This United Airlines deal was found by Cheapflights users on 1/25. 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 2/126:00 am
DEN
-
ATW
1 stop4h 58m
United Airlines
Mon 2/165:23 pm
ATW
-
DEN
1 stop6h 43m
United Airlines
Deal found 1/25$249
This American Airlines deal was found by Cheapflights users on 1/25. 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.
Thu 2/128:07 am
DEN
-
ATW
2 stops8h 45m
American Airlines
Mon 2/166:39 pm
ATW
-
DEN
1 stop4h 58m
American Airlines
Deal found 1/25$254
This United Airlines deal was found by Cheapflights users on 1/26. 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.
Fri 4/106:00 am
DEN
-
ATW
1 stop7h 00m
United Airlines
Mon 4/132:54 pm
ATW
-
DEN
1 stop5h 46m
United Airlines
Deal found 1/26$261
This American Airlines deal was found by Cheapflights users on 1/25. 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.
Fri 2/204:03 pm
DEN
-
ATW
1 stop6h 42m
American Airlines
Mon 2/236:39 pm
ATW
-
DEN
1 stop4h 58m
American Airlines
Deal found 1/25$268
This American Airlines deal was found by Cheapflights users on 1/24. 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.
Thu 3/57:00 am
DEN
-
ATW
1 stop4h 51m
American Airlines
Sun 3/86:39 pm
ATW
-
DEN
1 stop4h 58m
American Airlines
Deal found 1/24$274
This United Airlines deal was found by Cheapflights users on 1/25. 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.
Wed 2/115:25 pm
DEN
-
ATW
Nonstop2h 25m
United Airlines
Mon 2/165:23 pm
ATW
-
DEN
1 stop6h 43m
United Airlines
Deal found 1/25$277

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 January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$219
(United Airlines)

One-way from

$103
(Kiwi.com)

Popular in

November

Cheapest in

August

Average price

$334
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. 10% potential increase in price ($37 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 January 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 January 26, 2026.
Use the filters below to find and compare flights from Denver to Oshkosh that are best for you.

Fly from

Denver

Fly to

Oshkosh

Route

Depart

Return

Price

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Mon 6/1

7:34 pm-10:49 pm

Nonstop2h 15m

Appleton Intl

Mon 6/8

4:58 pm-6:39 pm

Nonstop2h 41m

$202

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Sat 2/21

5:25 pm-8:56 pm

Nonstop2h 31m

Appleton Intl

Tue 2/24

3:42 pm-10:05 pm

1 stop7h 23m

$219

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Fri 4/17

6:30 am-11:24 am

1 stop3h 54m

Appleton Intl

Tue 4/21

12:05 pm-3:36 pm

1 stop4h 31m

$229

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Thu 3/5

7:45 am-2:03 pm

1 stop5h 18m

Appleton Intl

Sat 3/14

10:20 am-4:41 pm

1 stop7h 21m

$229

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Thu 4/2

6:20 am-11:25 am

1 stop4h 05m

Appleton Intl

Tue 4/14

12:05 pm-3:36 pm

1 stop4h 31m

$229

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Wed 3/11

7:45 am-3:06 pm

1 stop6h 21m

Appleton Intl

Mon 3/16

5:23 pm-9:55 pm

1 stop5h 32m

$229

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Sat 2/21

6:00 am-1:58 pm

1 stop6h 58m

Appleton Intl

Mon 2/23

5:23 pm-11:06 pm

1 stop6h 43m

$229

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Tue 2/24

5:25 pm-8:56 pm

Nonstop2h 31m

Appleton Intl

Tue 3/3

5:23 pm-11:06 pm

1 stop6h 43m

$240

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Thu 2/12

6:00 am-11:58 am

1 stop4h 58m

Appleton Intl

Mon 2/16

5:23 pm-11:06 pm

1 stop6h 43m

$249

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Wed 4/1

6:20 am-11:25 am

1 stop4h 05m

Appleton Intl

Wed 4/15

7:00 am-1:57 pm

1 stop7h 57m

$254

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/24

Showing 1-10 of 17 results
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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 January 23, 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, February is the cheapest month in which you can book a flight from Denver to Oshkosh (average of $38). 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 January 26, 2026.

It’s typically best to fly out from Denver to Oshkosh in the evening. Doing so could potentially save you 26% 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 January 24, 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.

Weekly flight availability from Denver to Oshkosh

Explore weekly flight availability from Denver to Oshkosh. 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 January 26, 2026.

The most flights from DEN to OS9 are scheduled on a Monday (6 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

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 January 26, 2026.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines 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
8,111 reviews

Boarding

8.1

Overall

7.9

Entertainment

7.8

Food

7.2

Comfort

7.9

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
8,111 reviews
Delta
7.9
Good
8,111 reviews

Boarding

8.1

Overall

7.9

Entertainment

7.8

Food

7.2

Comfort

7.9

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
9,199 reviews
Delta
7.9
Good
8,111 reviews

Boarding

8.1

Overall

7.9

Entertainment

7.8

Food

7.2

Comfort

7.9

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
11,189 reviews
Delta
7.9
Good
8,111 reviews

Boarding

8.1

Overall

7.9

Entertainment

7.8

Food

7.2

Comfort

7.9

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
706 reviews
Delta
7.9
Good
8,111 reviews

Boarding

8.1

Overall

7.9

Entertainment

7.8

Food

7.2

Comfort

7.9

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 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 2h 15m. Allegiant Air provides one of the quickest options available for as low as $202. 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 $56 on Allegiant Air. Other airlines that offer cheap prices include Delta from $168 and United Airlines from $208 one-way.

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

    Before booking your flight to Oshkosh from Denver, check out the most reliable airlines to get you to your destination on time: United Airlines (83%), Frontier (75%), Southwest( 73%).

  • What are the cheapest flights from Denver to Oshkosh?

    The cheapest flight price from Denver to Oshkosh is $107. On average you can expect to pay $336. The most popular route, (Denver Intl - Appleton Intl), can usually be booked for $185.

  • 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, February is the cheapest month in which you can book a flight from Denver to Oshkosh (average of $38). 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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Alternative routes for Denver to Oshkosh

See prices for flight routes from nearby airports that may be better suited for you.
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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 January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$56Average$186FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$61Average$152FlexibilityNo cancel feeOn-time88%
DeltaCheapest$125Average$351FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$168Average$368FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$206Average$354FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$213Average$337FlexibilityNo cancel feeOn-time71%

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