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$1,105+ 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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — KGS
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Denver to Kos

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 December 12, 2025.

This FlightHub deal was found by Cheapflights users on 12/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/179:20 pmDEN - KGS
2 stops30h 45mMultiple Airlines
Thu 4/911:05 amKGS - DEN
2 stops37h 51mMultiple Airlines
Deal found 12/11$1,105

Find flight deals from Denver to Kos

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Kos (KGS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$1,105
(FlightHub)
Provider with most accurate pricing for Denver Intl-Kos flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Kos flights.
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From Denver Intl to Kos
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Kos 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 December 12, 2025.
Use the filters below to find and compare flights from Denver to Kos that are best for you.

Fly from

Denver

Fly to

Kos

Route

Depart

Return

Price

DenverKos

DEN - KGS

DENKGS

Denver Intl

Tue 3/17

9:20 pm-12:05 pm

2 stops30h 45m

Kos

Thu 4/9

11:05 am-3:56 pm

2 stops37h 51m

$1,105

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 Expedia the most. Expedia 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

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?

    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

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