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$3,601+ 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 12/21. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — KGS
dic. 20 — dic. 271
sáb. 12/20
sáb. 12/27
1 adult, Economy
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Cheap 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 noviembre 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$1,650
(KAYAK)
Provider with most accurate pricing for Denver Intl-Kos flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Kos flights.
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From Denver Intl to Kos
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Find 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 noviembre 20, 2025.

This Ovago deal was found by Cheapflights users on 11/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/218:20 pmDEN - KGS
2 stops26h 45mMultiple Airlines
dom. 1/45:35 pmKGS - DEN
2 stops54h 00mMultiple Airlines
Deal found 11/20$3,601
This FlightHub deal was found by Cheapflights users on 11/20. 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.
sáb. 12/204:20 pmDEN - KGS
2 stops15h 45mMultiple Airlines
dom. 1/45:35 pmKGS - DEN
2 stops31h 25mMultiple Airlines
Deal found 11/20$3,788
This Justfly.com deal was found by Cheapflights users on 11/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/204:20 pmDEN - KGS
2 stops15h 45mMultiple Airlines
vie. 1/212:35 pmKGS - DEN
2 stops36h 25mMultiple Airlines
Deal found 11/20$4,130
This Ovago deal was found by Cheapflights users on 11/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/204:20 pmDEN - KGS
2 stops15h 45mMultiple Airlines
sáb. 1/38:35 amKGS - DEN
2 stops19h 20mMultiple Airlines
Deal found 11/20$4,179
This Ovago deal was found by Cheapflights users on 11/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/218:20 pmDEN - KGS
2 stops26h 45mMultiple Airlines
vie. 1/29:05 pmKGS - DEN
2 stops27h 55mMultiple Airlines
Deal found 11/20$4,357
This Ovago deal was found by Cheapflights users on 11/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/218:20 pmDEN - KGS
2 stops26h 45mMultiple Airlines
sáb. 1/38:35 pmKGS - DEN
2 stops51h 00mMultiple Airlines
Deal found 11/20$4,420
This Justfly.com deal was found by Cheapflights users on 11/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/194:20 pmDEN - KGS
2 stops39h 45mMultiple Airlines
dom. 1/49:05 pmKGS - DEN
2 stops27h 55mMultiple Airlines
Deal found 11/20$4,911
This FlightHub deal was found by Cheapflights users on 11/20. 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.
vie. 12/194:20 pmDEN - KGS
2 stops39h 45mMultiple Airlines
sáb. 1/38:35 pmKGS - DEN
2 stops51h 00mMultiple Airlines
Deal found 11/20$6,419
This FlightHub deal was found by Cheapflights users on 11/20. 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.
vie. 12/198:20 pmDEN - KGS
2 stops30h 45mMultiple Airlines
vie. 1/29:05 pmKGS - DEN
2 stops30h 50mMultiple Airlines
Deal found 11/20$12,607

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 noviembre 20, 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

dom. 12/21

8:20 pm-8:05 am

2 stops26h 45m

Kos

dom. 1/4

5:35 pm-2:35 pm

2 stops54h 00m

$3,601

DenverKos

DEN - KGS

DENKGS

Denver Intl

sáb. 12/20

4:20 pm-5:05 pm

2 stops15h 45m

Kos

dom. 1/4

5:35 pm-4:00 pm

2 stops31h 25m

$3,788

DenverKos

DEN - KGS

DENKGS

Denver Intl

sáb. 12/20

4:20 pm-5:05 pm

2 stops15h 45m

Kos

vie. 1/2

12:35 pm-4:00 pm

2 stops36h 25m

$4,130

DenverKos

DEN - KGS

DENKGS

Denver Intl

sáb. 12/20

4:20 pm-5:05 pm

2 stops15h 45m

Kos

sáb. 1/3

8:35 am-6:55 pm

2 stops19h 20m

$4,179

DenverKos

DEN - KGS

DENKGS

Denver Intl

dom. 12/21

8:20 pm-8:05 am

2 stops26h 45m

Kos

vie. 1/2

9:05 pm-4:00 pm

2 stops27h 55m

$4,357

DenverKos

DEN - KGS

DENKGS

Denver Intl

dom. 12/21

8:20 pm-8:05 am

2 stops26h 45m

Kos

sáb. 1/3

8:35 pm-2:35 pm

2 stops51h 00m

$4,420

DenverKos

DEN - KGS

DENKGS

Denver Intl

vie. 12/19

4:20 pm-5:05 pm

2 stops39h 45m

Kos

dom. 1/4

9:05 pm-4:00 pm

2 stops27h 55m

$4,911

DenverKos

DEN - KGS

DENKGS

Denver Intl

vie. 12/19

8:20 pm-12:05 pm

2 stops30h 45m

Kos

vie. 1/2

9:05 pm-6:55 pm

2 stops30h 50m

$12,607

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

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 November.
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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