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Oshkosh

$71+ 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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — MKE
Jul 26 — Aug 21
Sun 7/26
Sun 8/2
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 44 days in advance, depart on a Sunday 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 June 26, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 6/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/107:39 pm
DEN
-
ATW
Nonstop2h 21m
Allegiant Air
Mon 8/175:08 pm
ATW
-
DEN
Nonstop2h 41m
Allegiant Air
Deal found 6/25$165
This Booking.com deal was found by Cheapflights users on 6/24. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:50 pm
DEN
-
ATW
Nonstop2h 17m
Allegiant Air
Mon 9/281:27 pm
ATW
-
DEN
Nonstop2h 31m
Allegiant Air
Deal found 6/24$166
This Cheapflightsfares deal was found by Cheapflights users on 6/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:39 pm
DEN
-
ATW
Nonstop2h 21m
Allegiant Air
Mon 8/248:45 am
ATW
-
DEN
Nonstop2h 34m
Allegiant Air
Deal found 6/23$169
This Cheapflightsfares deal was found by Cheapflights users on 6/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:50 pm
DEN
-
ATW
Nonstop2h 17m
Allegiant Air
Mon 10/195:29 pm
ATW
-
DEN
Nonstop2h 31m
Allegiant Air
Deal found 6/23$172
This Kiwi.com deal was found by Cheapflights users on 6/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:50 pm
DEN
-
ATW
Nonstop2h 17m
Allegiant Air
Fri 10/96:01 pm
ATW
-
DEN
Nonstop2h 30m
Allegiant Air
Deal found 6/23$176
This Cheapflightsfares deal was found by Cheapflights users on 6/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2811:09 am
DEN
-
ATW
Nonstop2h 18m
Allegiant Air
Mon 8/319:15 am
ATW
-
DEN
Nonstop2h 34m
Allegiant Air
Deal found 6/25$178
This Cheapflightsfares deal was found by Cheapflights users on 6/21. 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 8/147:39 pm
DEN
-
ATW
Nonstop2h 21m
Allegiant Air
Mon 8/248:45 am
ATW
-
DEN
Nonstop2h 34m
Allegiant Air
Deal found 6/21$182
This Cheapflightsfares deal was found by Cheapflights users on 6/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/147:39 pm
DEN
-
ATW
Nonstop2h 21m
Allegiant Air
Mon 8/175:08 pm
ATW
-
DEN
Nonstop2h 41m
Allegiant Air
Deal found 6/24$187
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:50 pm
DEN
-
ATW
Nonstop2h 17m
Allegiant Air
Fri 10/96:01 pm
ATW
-
DEN
Nonstop2h 30m
Allegiant Air
Deal found 6/25$193

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 June 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$165
(Cheapflightsfares)

One-way from

$71
(Kiwi.com)

Popular in

November

Cheapest in

August

Average price

$312
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. 9% potential increase in price ($33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 26, 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

Sat 8/8

4:59 pm-11:23 pm

1 stop5h 24m

Appleton Intl

Sat 8/15

5:00 pm-9:44 pm

1 stop5h 44m

$289

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Sat 7/11

4:08 pm-10:56 pm

1 stop5h 48m

Appleton Intl

Fri 7/31

11:27 am-3:30 pm

1 stop5h 03m

$309

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Tue 7/7

5:00 am-12:09 pm

1 stop6h 09m

Appleton Intl

Tue 8/11

5:48 pm-11:59 pm

1 stop7h 11m

$309

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Sat 8/15

5:32 pm-8:54 pm

Nonstop2h 22m

Appleton Intl

Sat 8/22

12:28 pm-7:45 pm

1 stop8h 17m

$359
Quickest round-trip

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Wed 9/23

5:32 pm-8:54 pm

Nonstop2h 22m

Appleton Intl

Sat 9/26

8:50 am-10:35 am

Nonstop2h 45m

$388

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Tue 7/7

5:40 pm-9:04 pm

Nonstop2h 24m

Appleton Intl

Tue 8/11

8:45 am-10:30 am

Nonstop2h 45m

$394

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Wed 9/30

9:30 am-11:02 pm

2 stops12h 32m

Appleton Intl

Fri 10/9

5:25 pm-10:59 pm

1 stop6h 34m

$399

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Thu 7/23

5:40 pm-9:04 pm

Nonstop2h 24m

Appleton Intl

Sat 7/25

8:40 am-10:26 am

Nonstop2h 46m

$413

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Fri 9/4

5:32 pm-8:54 pm

Nonstop2h 22m

Appleton Intl

Tue 9/8

8:45 am-10:30 am

Nonstop2h 45m

$414

DenverAppleton

DEN - ATW

DENATW

Denver Intl

Thu 7/30

6:00 am-10:47 am

1 stop3h 47m

Appleton Intl

Sun 8/2

6:00 am-10:03 am

1 stop5h 03m

$419

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/21

Showing 1-10 of 23 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

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 June 26, 2026.

It’s typically best to fly out from Denver to Oshkosh in the afternoon. Doing so could potentially save you 13% on the flight price compared to flying at noon, which is usually more expensive.

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 June 26, 2026.

The most flights from DEN to OS9 are scheduled on a Monday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

How much does it cost to fly round-trip from Denver to Oshkosh?

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 June 20, 2026.

Travelers seeking maximum savings on their Denver to Oshkosh flight should consider departing on Saturday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 June 26, 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
7.8
Good
8,452 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

7.8

Entertainment

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.8
Good
8,452 reviews
Delta
7.8
Good
8,452 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

7.8

Entertainment

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
9,895 reviews
Delta
7.8
Good
8,452 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

7.8

Entertainment

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Allegiant Air
7.3
Good
693 reviews
Delta
7.8
Good
8,452 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

7.8

Entertainment

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
American Airlines
7.1
Good
11,778 reviews
Delta
7.8
Good
8,452 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

7.8

Entertainment

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

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 21m. Allegiant Air provides one of the quickest options available for as low as $165. Airlines will cover a distance of 880 mi. Most flights are nonstop.

  • 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 $65 on Allegiant Air. Other airlines that offer cheap prices include United Airlines from $102 and American Airlines from $179 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 (85%), SkyWest Airlines (81%), Frontier( 75%).

  • What are the cheapest flights from Denver to Oshkosh?

    The cheapest flight price from Denver to Oshkosh is $177. On average you can expect to pay $382. The most popular route, (Denver Intl - Appleton Intl), can usually be booked for $165.

  • 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.

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 June 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$61Average$199FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$74Average$190FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$187Average$374FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$205Average$409FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$218Average$366FlexibilityNo cancel feeOn-time71%
DeltaCheapest$223Average$357FlexibilityNo cancel feeOn-timeN/A

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