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$97+ 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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — DEN
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheapflights Tip: The best prices from Oshkosh to Denver Intl are usually found in September or June, booked 87 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 July 3, 2025.

Round-trip from

$134
(Mytrip)

One-way from

$105
(Booking.com)

Popular in

March

Cheapest in

September

Average price

$224
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 ($61 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 July 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 July 3, 2025.

This Mytrip deal was found by Cheapflights users on 7/1. 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.
Tue 7/2910:00 amATW - DEN
Nonstop2h 33mAllegiant Air
Tue 8/512:23 pmDEN - ATW
Nonstop2h 19mAllegiant Air
Deal found 7/1$134
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Wed 7/304:15 pmATW - DEN
Nonstop2h 52mUnited Airlines
Sat 8/25:20 pmDEN - ATW
Nonstop2h 34mUnited Airlines
Deal found 7/2$209
This American Airlines deal was found by Cheapflights users on 7/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/223:25 pmATW - DEN
1 stop8h 30mAmerican Airlines
Mon 8/255:32 pmDEN - ATW
1 stop5h 02mAmerican Airlines
Deal found 7/3$229
This Delta deal was found by Cheapflights users on 7/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/204:12 pmATW - DEN
1 stop4h 43mDelta
Wed 8/276:15 amDEN - ATW
1 stop4h 16mDelta
Deal found 7/2$239
This eDestinos deal was found by Cheapflights users on 7/3. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/510:00 amATW - DEN
Nonstop2h 33mMultiple Airlines
Thu 8/73:00 pmDEN - ATW
1 stop16h 12mMultiple Airlines
Deal found 7/3$245

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 July 3, 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

Tue 7/29

10:00 am-11:33 am

Nonstop2h 33m

Denver Intl

Tue 8/5

12:23 pm-3:42 pm

Nonstop2h 19m

$134

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Wed 7/30

4:15 pm-6:07 pm

Nonstop2h 52m

Denver Intl

Sat 8/2

5:20 pm-8:54 pm

Nonstop2h 34m

$209

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Fri 8/22

3:25 pm-10:55 pm

1 stop8h 30m

Denver Intl

Mon 8/25

5:32 pm-11:34 pm

1 stop5h 02m

$229

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Wed 8/20

5:34 am-12:46 pm

1 stop8h 12m

Denver Intl

Thu 8/28

6:15 am-11:31 am

1 stop4h 16m

$239

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Tue 8/5

10:00 am-11:33 am

Nonstop2h 33m

Denver Intl

Thu 8/7

3:00 pm-8:12 am

1 stop16h 12m

$245

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Sun 8/17

1:05 pm-2:39 pm

Nonstop2h 34m

$97

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Mon 10/13

9:00 am-11:03 am

2 stops27h 03m

$206

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Sat 7/26

4:15 pm-6:07 pm

Nonstop2h 52m

$224

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Thu 8/7

6:35 am-1:56 pm

1 stop8h 21m

$234

AppletonDenver

ATW - DEN

ATWDEN

Appleton Intl

Tue 7/8

11:59 am-3:32 pm

1 stop4h 33m

$479

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

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 June 27, 2025.

The best time to book flights from Oshkosh to Denver is 87 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 July 3, 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 June 29, 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. Monday mornings 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 July 3, 2025.

The most flights from OS9 to DEN are scheduled on a Wednesday (9 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (2 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 July 3, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and Allegiant Air 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
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

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
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

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
8,861 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

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
7.3
Good
708 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

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
7,982 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

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 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, 88 users have taken a look at flights from Oshkosh to Denver Intl.

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

    For one-way options, check prices for Allegiant Air. According to our data, you can fly for as low as $105. Users have also found prices from $224 and $234 on United Airlines and American Airlines, respectively.

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

    The top 3 most reliable airlines when flying from Oshkosh to Denver are Southwest (76%), Frontier (68%) and United Airlines (67%).

  • What are the cheapest flights from Oshkosh to Denver?

    The cheapest flight price from Oshkosh to Denver is $126. On average you can expect to pay $660. The most popular route, (Appleton Intl - Denver Intl), can usually be booked for $104.

  • 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 Oshkosh?

Book flights to Oshkosh if you plan to visit one of these locations
Westminster
Black Hawk
Winter Park
Lakewood
Cripple Creek
Golden
Brighton
Silverthorne
Thornton
Frisco
Broomfield
Grand Lake
Manitou Springs
Central City
Fort Morgan
Glendale
Copper Mountain
Wheat Ridge
Longmont
Idaho Springs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Oshkosh to Denver

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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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$40Average$155FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$89Average$171FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$158Average$380FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$185Average$328FlexibilityNo cancel feeOn-time71%
DeltaCheapest$207Average$371FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$232Average$372FlexibilityNo cancel feeOn-time63%

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