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$120+ 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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — DEN
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Oshkosh to Denver Intl are usually found in June or July, booked 82 days in advance, depart on a Sunday or Thursday and return on a Thursday

Cheap flight deals from Oshkosh to Denver

Keep the following information in mind while searching for Oshkosh to Denver flight deals. Data was last updated septiembre 17, 2025.

Round-trip from

$179
(American Airlines)

One-way from

$120
(American Airlines)

Popular in

March

Cheapest in

June

Average price

$228
From Oshkosh to Denver Intl
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One-way flight from Oshkosh to Denver Intl
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Highest demand for flights based on searches. 15% potential increase in price ($60 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 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 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 septiembre 17, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/124:55 pmATW - DEN
Nonstop2h 37mAllegiant Air
jue. 10/235:52 pmDEN - ATW
Nonstop2h 15mAllegiant Air
Deal found 9/17$175
This American Airlines deal was found by Cheapflights users on 9/16. 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.
sáb. 11/16:13 pmATW - DEN
1 stop5h 18mAmerican Airlines
mié. 11/512:33 pmDEN - ATW
1 stop5h 39mAmerican Airlines
Deal found 9/16$179
This Cheapflightsfares deal was found by Cheapflights users on 9/16. 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.
dom. 9/213:20 pmATW - DEN
Nonstop2h 34mAllegiant Air
dom. 9/285:44 pmDEN - ATW
Nonstop2h 17mAllegiant Air
Deal found 9/16$190
This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/124:55 pmATW - DEN
Nonstop2h 37mAllegiant Air
jue. 10/167:22 pmDEN - ATW
Nonstop2h 15mAllegiant Air
Deal found 9/17$198
This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/283:20 pmATW - DEN
Nonstop2h 34mAllegiant Air
dom. 10/55:52 pmDEN - ATW
Nonstop2h 15mAllegiant Air
Deal found 9/17$202
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/194:55 pmATW - DEN
Nonstop2h 37mAllegiant Air
jue. 10/235:52 pmDEN - ATW
Nonstop2h 15mAllegiant Air
Deal found 9/15$207
This United Airlines deal was found by Cheapflights users on 9/15. 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.
sáb. 10/188:43 amATW - DEN
Nonstop2h 52mUnited Airlines
vie. 10/245:20 pmDEN - ATW
Nonstop2h 36mUnited Airlines
Deal found 9/15$209
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/94:55 pmATW - DEN
Nonstop2h 37mAllegiant Air
jue. 10/167:22 pmDEN - ATW
Nonstop2h 15mAllegiant Air
Deal found 9/14$215

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 septiembre 17, 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

sáb. 11/8

4:17 pm-7:30 pm

1 stop4h 13m

Denver Intl

mié. 11/12

1:10 pm-10:08 pm

1 stop7h 58m

$229

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

sáb. 10/25

11:11 am-5:28 pm

1 stop7h 17m

Denver Intl

mar. 10/28

6:05 am-11:25 am

1 stop4h 20m

$229

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

vie. 10/24

5:35 pm-10:06 pm

1 stop5h 31m

Denver Intl

mié. 10/29

6:05 am-11:25 am

1 stop4h 20m

$229

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

mié. 11/12

5:23 am-2:04 pm

1 stop9h 41m

Denver Intl

sáb. 11/15

1:57 pm-9:07 pm

1 stop6h 10m

$229

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

sáb. 10/4

12:15 pm-3:44 pm

1 stop4h 29m

Denver Intl

mar. 10/7

6:05 am-11:25 am

1 stop4h 20m

$239

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

vie. 10/31

4:17 pm-7:30 pm

1 stop4h 13m

Denver Intl

dom. 11/2

5:00 am-10:25 am

1 stop4h 25m

$239

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

sáb. 10/11

4:17 pm-7:30 pm

1 stop4h 13m

Denver Intl

jue. 10/16

6:05 am-11:25 am

1 stop4h 20m

$239

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

sáb. 10/4

8:43 am-10:35 am

Nonstop2h 52m

Denver Intl

mar. 10/7

11:15 am-7:28 pm

1 stop7h 13m

$269

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

jue. 10/23

8:43 am-10:35 am

Nonstop2h 52m

Denver Intl

lun. 10/27

5:29 pm-8:58 pm

Nonstop2h 29m

$279

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

sáb. 10/11

8:43 am-10:35 am

Nonstop2h 52m

Denver Intl

sáb. 10/18

5:20 pm-8:56 pm

Nonstop2h 36m

$279

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 23 results
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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 September 12, 2025.

The best time to book flights from Oshkosh to Denver is 82 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, October is the cheapest month in which you can book a flight from Oshkosh to Denver (average of $197). Flying from Oshkosh to Denver in March is currently the most expensive (average of $278). 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 septiembre 17, 2025.

When flying from Oshkosh to Denver, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 September 14, 2025.

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

Weekly flight availability from Oshkosh to Denver

Explore weekly flight availability from Oshkosh to Denver. 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 septiembre 17, 2025.

The most flights from OS9 to DEN 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 (3 on average).

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 septiembre 17, 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
8.0
Very good
7,961 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
8,926 reviews
Delta
8.0
Very good
7,961 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
7,961 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
699 reviews
Delta
8.0
Very good
7,961 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

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 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 1 inbound flight 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, 95 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 4h 13m. Airlines will cover a distance of 880 mi.

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

    The top 3 most reliable airlines when flying from Oshkosh to Denver are Southwest (78%), United Airlines (68%) and Frontier (65%).

  • What are the cheapest flights from Oshkosh to Denver?

    The cheapest flight price from Oshkosh to Denver is $98. On average you can expect to pay $546. The most popular route, (Appleton Intl - Denver Intl), can usually be booked for $183.

  • 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, October is the cheapest month in which you can book a flight from Oshkosh to Denver (average of $197). Flying from Oshkosh to Denver in March is currently the most expensive (average of $278). 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
Westminster
Golden
Winter Park
Lakewood
Broomfield
Greeley
Lone Tree
Cripple Creek
Thornton
Silverthorne
Manitou Springs
Fort Morgan
Glendale
Wheat Ridge
Brighton
Longmont
Idaho Springs
Parker
Sterling

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Oshkosh to Denver

See prices for flight routes from nearby airports that may be better suited for you.
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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 septiembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$53Average$172FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$98Average$175FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$178Average$308FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$193Average$388FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$207Average$364FlexibilityNo cancel feeOn-time63%
DeltaCheapest$216Average$360FlexibilityNo cancel feeOn-timeN/A

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