In terms of precipitation, rainfall in Kos ranges from 0.1 - 6.7 inches per month. January is typically the wettest month, when rainfall can reach 6.7 in. July is typically the driest time to visit Kos when rainfall is around 0.1 in.

If weather is an important factor for your trip to Kos, 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 78.8 F. Travelers looking to avoid the cold should look outside of February, when temperatures are typically at their lowest (around 50.0 F).

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

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

Most accurate provider : When it comes to deals on Denver-Kos flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Kos flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Kos flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Denver-Kos flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Kos flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Yes. In addition to deals on Denver to Kos flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Denver to Kos?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Kos.

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

Yes. Cheapflights offers flight deals from Denver to Kos by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$829+ Flights from Denver to Kos

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheap flight deals from Denver to Kos

Cheapest flights from Denver to Kos
Explore the most affordable flight options available from Denver to Kos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 25, 2026.

Tue 3/106:25 pm

DEN

KGS

3 stops41h 05m

Multiple Airlines

Tue 3/174:40 pm

KGS

DEN

2 stops31h 50m

Multiple Airlines

Deal found 1/24

$829

Mon 3/96:45 pm

DEN

KGS

2 stops17h 20m

Multiple Airlines

Mon 3/168:35 pm

KGS

DEN

2 stops26h 05m

Multiple Airlines

Deal found 1/23

$1,082

Best flights from Denver to Kos
Discover carefully curated flight deals from Denver to Kos that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated January 25, 2026.

Tue 3/106:25 pm

DEN

KGS

3 stops41h 05m

Multiple Airlines

Tue 3/174:40 pm

KGS

DEN

2 stops31h 50m

Multiple Airlines

Deal found 1/24

$829

Mon 3/96:45 pm

DEN

KGS

2 stops17h 20m

Multiple Airlines

Mon 3/168:35 pm

KGS

DEN

2 stops26h 05m

Multiple Airlines

Deal found 1/23

$1,082

One-way flights from Denver to Kos
Search for one-way flight options from Denver to Kos. Find affordable one-way fares based on user searches. Data last updated January 25, 2026.

Thu 4/231:25 pm

DEN

KGS

2 stops45h 30m

SWISS

Deal found 1/24

$1,033

Thu 4/235:40 pm

DEN

KGS

1 stop30h 10m

Lufthansa

Deal found 1/24

$1,048

Fri 4/2411:15 am

DEN

KGS

2 stops23h 40m

SWISS

Deal found 1/23

$1,114

Find flight deals from Denver to Kos

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$829 (Trip.com)

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

Search Deals

Provider most trusted by Cheapflights users for Denver Intl-Kos flights.

Search Deals

From Denver Intl to Kos

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

DenverKos

DEN - KGS

DENKGS

Denver Intl

Tue 3/10

6:25 pm-7:30 pm

3 stops41h 05m

Kos

Tue 3/17

4:40 pm-4:30 pm

2 stops31h 50m

$829

DenverKos

DEN - KGS

DENKGS

Denver Intl

Mon 3/9

6:45 pm-8:05 pm

2 stops17h 20m

Kos

Mon 3/16

8:35 pm-2:40 pm

2 stops26h 05m

$1,082

DenverKos

DEN - KGS

DENKGS

Denver Intl

Thu 4/23

1:25 pm-7:55 pm

2 stops45h 30m

$1,033

DenverKos

DEN - KGS

DENKGS

Denver Intl

Thu 4/23

5:40 pm-8:50 am

1 stop30h 10m

$1,048

DenverKos

DEN - KGS

DENKGS

Denver Intl

Fri 4/24

11:15 am-7:55 pm

2 stops23h 40m

$1,114

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/24

Compare providers for flights from Denver to Kos

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Kos in January.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Denver-Kos flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Kos flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Kos flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Denver-Kos flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Kos flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Denver to Kos

Have a flexible travel schedule? Discover the best time to fly to Kos 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.

Related info for your journey

Can I find deals for flights from Denver to Kos that include hotel bookings?
Yes. In addition to deals on Denver to Kos flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Denver to Kos?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Kos.
Can I find deals for business class flights from Denver to Kos?
Yes. Cheapflights offers flight deals from Denver to Kos by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Denver to Kos

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$829+ Cheap flights from Denver (DEN) to Kos (KGS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Denver to Kos with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Denver to Kos

Cheapest flights from Denver to KosExplore the most affordable flight options available from Denver to Kos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 25, 2026.

Explore the most affordable flight options available from Denver to Kos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 25, 2026.

Find flight deals from Denver to Kos

Most accurate provider

Most trusted provider

Round-trip from

Cheapflights Fare Finder

Use the filters below to find and compare flights from Denver to Kos that are best for you.

Compare providers for flights from Denver to Kos

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Kos in January.

Best time to book a flight from Denver to Kos

Have a flexible travel schedule? Discover the best time to fly to Kos from Denver with our price prediction graph.

Related info for your journey

Find useful and relevant information for your journey from Denver to Kos. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

How can I find direct flights from Denver to Kos?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Denver to Kos

See prices for flight routes from nearby airports that may be better suited for you.

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Denver to Kos
Explore the most affordable flight options available from Denver to Kos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 25, 2026.