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Oshkosh

$79+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — MKE
Sep 10 — Sep 171
Wed 9/10
Wed 9/17
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Oshkosh are usually found in September or August, booked 77 days in advance, depart on a Thursday or Tuesday and return on a Sunday

Cheap flight deals from Denver to Oshkosh

Keep the following information in mind while searching for Denver to Oshkosh flight deals. Data was last updated September 5, 2025.

Round-trip from

$131
(Booking.com)

One-way from

$79
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$225
From Denver Intl to Oshkosh
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One-way flight from Denver Intl to Oshkosh
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($80 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 5, 2025.

This Booking.com deal was found by Cheapflights users on 9/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/235:52 pmDEN - ATW
Nonstop2h 15mAllegiant Air
Sun 10/263:25 pmATW - DEN
Nonstop2h 37mAllegiant Air
Deal found 9/3$131
This Mytrip deal was found by Cheapflights users on 9/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/97:22 pmDEN - ATW
Nonstop2h 15mAllegiant Air
Sun 10/124:55 pmATW - DEN
Nonstop2h 37mAllegiant Air
Deal found 9/2$141
This Booking.com deal was found by Cheapflights users on 9/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/25:52 pmDEN - ATW
Nonstop2h 15mAllegiant Air
Thu 10/94:55 pmATW - DEN
Nonstop2h 37mAllegiant Air
Deal found 9/3$208
This United Airlines deal was found by Cheapflights users on 9/2. 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.
Fri 9/265:20 pmDEN - ATW
Nonstop2h 36mUnited Airlines
Tue 9/308:43 amATW - DEN
Nonstop2h 52mUnited Airlines
Deal found 9/2$209
This Booking.com deal was found by Cheapflights users on 9/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/97:22 pmDEN - ATW
Nonstop2h 15mAllegiant Air
Thu 10/164:55 pmATW - DEN
Nonstop2h 37mAllegiant Air
Deal found 9/2$212
This Cheapflightsfares deal was found by Cheapflights users on 9/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/115:44 pmDEN - ATW
Nonstop2h 17mAllegiant Air
Sun 9/143:20 pmATW - DEN
Nonstop2h 34mAllegiant Air
Deal found 9/3$216
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/235:52 pmDEN - ATW
Nonstop2h 15mMultiple Airlines
Sun 10/262:42 pmATW - DEN
1 stop26h 44mMultiple Airlines
Deal found 9/3$217
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Sat 9/205:33 pmDEN - ATW
Nonstop2h 35mUnited Airlines
Sat 10/48:43 amATW - DEN
Nonstop2h 52mUnited Airlines
Deal found 9/3$219
This Cheapflightsfares deal was found by Cheapflights users on 9/4. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/185:44 pmDEN - ATW
Nonstop2h 17mAllegiant Air
Sun 9/213:20 pmATW - DEN
Nonstop2h 34mAllegiant Air
Deal found 9/4$224
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/28:59 pmDEN - ATW
1 stop25h 13mMultiple Airlines
Thu 10/94:55 pmATW - DEN
Nonstop2h 37mMultiple Airlines
Deal found 9/3$225

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 September 5, 2025.
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

Thu 10/23

5:52 pm-9:07 pm

Nonstop2h 15m

Appleton Intl

Sun 10/26

3:25 pm-5:02 pm

Nonstop2h 37m

$131

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Thu 10/9

7:22 pm-10:37 pm

Nonstop2h 15m

Appleton Intl

Sun 10/12

4:55 pm-6:32 pm

Nonstop2h 37m

$141

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Thu 10/2

5:52 pm-9:07 pm

Nonstop2h 15m

Appleton Intl

Thu 10/9

4:55 pm-6:32 pm

Nonstop2h 37m

$208

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Fri 9/26

5:20 pm-8:56 pm

Nonstop2h 36m

Appleton Intl

Tue 9/30

8:43 am-10:35 am

Nonstop2h 52m

$209

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Thu 10/9

7:22 pm-10:37 pm

Nonstop2h 15m

Appleton Intl

Thu 10/16

4:55 pm-6:32 pm

Nonstop2h 37m

$212

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Thu 9/11

5:44 pm-9:01 pm

Nonstop2h 17m

Appleton Intl

Sun 9/14

3:20 pm-4:54 pm

Nonstop2h 34m

$216

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Thu 10/23

5:52 pm-9:07 pm

Nonstop2h 15m

Appleton Intl

Sun 10/26

2:42 pm-4:26 pm

1 stop26h 44m

$217

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Wed 12/3

5:31 pm-9:00 pm

Nonstop2h 29m

Appleton Intl

Tue 12/9

2:32 pm-8:04 pm

1 stop6h 32m

$219

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Wed 9/24

6:00 am-12:05 pm

1 stop5h 05m

Appleton Intl

Tue 9/30

8:43 am-10:35 am

Nonstop2h 52m

$219

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Sat 9/20

5:33 pm-9:08 pm

Nonstop2h 35m

Appleton Intl

Sat 10/4

8:43 am-10:35 am

Nonstop2h 52m

$219

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/3

Showing 1-10 of 18 results
1
2

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 August 29, 2025.

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 $280). Flying from Denver to Oshkosh in June is currently the most expensive (average of $376). 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 September 5, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Denver to Oshkosh as you normally would.

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 August 31, 2025.

Travelers seeking maximum savings on their Denver to Oshkosh flight should consider departing on Wednesday evenings when fares are most often at their lowest. Monday afternoons 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 September 5, 2025.

The most flights from DEN to OS9 are scheduled on a Monday (9 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 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 September 5, 2025.
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
8.0
Very good
7,977 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,977 reviews
Delta
8.0
Very good
7,977 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,939 reviews
Delta
8.0
Very good
7,977 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,977 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Allegiant Air
7.2
Good
702 reviews
Delta
8.0
Very good
7,977 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 3 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 $131. Airlines will cover a distance of 880 mi. Most flights are nonstop.

  • 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: Frontier (74%), SkyWest Airlines (70%), United Airlines( 68%).

  • What are the cheapest flights from Denver to Oshkosh?

    The cheapest flight price from Denver to Oshkosh is $51. On average you can expect to pay $202. The most popular route, (Denver Intl - Appleton Intl), can usually be booked for $134.

  • 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 $280). Flying from Denver to Oshkosh in June is currently the most expensive (average of $376). 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.

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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 September 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$60Average$183FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$78Average$178FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$170Average$397FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$190Average$361FlexibilityNo cancel feeOn-time71%
DeltaCheapest$199Average$372FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$204Average$353FlexibilityNo cancel feeOn-time63%

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