How popular is this Denver to Oshkosh flight route?

This flight path from Denver Intl to Oshkosh was viewed by 6 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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 $71 on Allegiant Air. Other airlines that offer cheap prices include United Airlines from $102 and American Airlines from $183 one-way.

Weekly flight availability from Denver to Oshkosh

The most flights from DEN to OS9 are scheduled on a Wednesday (7 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

In terms of precipitation, rainfall in Oshkosh ranges from 1.1 - 3.8 inches per month. June is typically the wettest month, when rainfall can reach 3.8 in. February is typically the driest time to visit Oshkosh when rainfall is around 1.1 in.

If weather is an important factor for your trip to Oshkosh, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 17.6 F).

What are the cheapest flights from Denver to Oshkosh?

The cheapest flight price from Denver to Oshkosh is $118. On average you can expect to pay $355. The most popular route, (Denver Intl - Appleton Intl), can usually be booked for $174.

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: SkyWest Airlines (73%), United Airlines (66%), Southwest( 54%).

What are the most popular airlines that fly from Denver to Oshkosh?

Consider United Airlines, Allegiant Air or Delta when booking your flight. These represent the most popular airlines when flying from Denver to Oshkosh.

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.

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.

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Cheapflights Tip: The best prices from Denver Intl to Oshkosh are usually found in March or May, booked 82 days in advance, depart on a Monday or Friday and return on a Monday

Find flight deals from Denver to Oshkosh

Most accurate provider	FlightHub 3 stars
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Popular in	November
Cheapest in	March
Average price	$318

Provider with most accurate pricing for Denver Intl-Appleton Intl flight deals.

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Highest demand for flights based on searches. 6% potential increase in price ($23 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).

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Average for round-trip flights in October 2026

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Everything you need to know about your flight from Denver to Oshkosh

Prices

Airlines

What is the cheapest time of day to fly from DEN to OS9?

It’s typically best to fly out from Denver to Oshkosh in the afternoon. Doing so could potentially save you 17% 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?

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

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

8,651 reviews

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

Delta

7.8

Good

8,651 reviews

Delta

7.8

Good

8,651 reviews

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

United Airlines

7.4

Good

10,366 reviews

Delta

7.8

Good

8,651 reviews

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

Allegiant Air

7.3

Good

677 reviews

Delta

7.8

Good

8,651 reviews

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

American Airlines

7.0

Good

12,169 reviews

Delta

7.8

Good

8,651 reviews

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

Related info for your journey

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 6 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
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 $71 on Allegiant Air. Other airlines that offer cheap prices include United Airlines from $102 and American Airlines from $183 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: SkyWest Airlines (73%), United Airlines (66%), Southwest( 54%).
What are the cheapest flights from Denver to Oshkosh?
The cheapest flight price from Denver to Oshkosh is $118. On average you can expect to pay $355. The most popular route, (Denver Intl - Appleton Intl), can usually be booked for $174.
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.

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Top 6 airlines flying from Denver to Oshkosh

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$84	Average$239	FlexibilityNo cancel fee	On-time62%
Allegiant Air	Cheapest$110	Average$214	FlexibilityNo cancel fee	On-time88%
Delta	Cheapest$228	Average$366	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$236	Average$388	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$238	Average$372	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$274	Average$436	FlexibilityNo cancel fee	On-time63%

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Cheap flights from Denver (DEN) to Oshkosh, WI

Find cheap flights from Denver to Oshkosh with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Denver to Oshkosh

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Cheapflights Insights

What is the cheapest time of day to fly from DEN to OS9?

It’s typically best to fly out from Denver to Oshkosh in the afternoon. Doing so could potentially save you 17% 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?

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.

Weekly flight availability from Denver to Oshkosh

The most flights from DEN to OS9 are scheduled on a Wednesday (7 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

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.

Related info for your journey

What airport do you fly from for flights from Denver to Oshkosh?

How popular is this Denver to Oshkosh flight route?

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

What are the most reliable airlines from Denver to Oshkosh?

What are the cheapest flights from Denver to Oshkosh?

Can I find deals for flights from Denver to Oshkosh that include hotel bookings?

How can I find direct flights from Denver to Oshkosh?

Can I find deals for business class flights from Denver to Oshkosh?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Denver to Oshkosh

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Complete your trip

Complete your trip to Oshkosh by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Denver to Oshkosh by cabin class

Find flights from Denver to Oshkosh, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Denver and Oshkosh flights

Browse other Denver and Oshkosh flight options. Last updated on October 15, 2026.

Other flights from Denver

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