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Cheap flights from Denver to Kos from $417

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Kos departing on 7/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Denver to Kos

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
4:15 pm - 7:45 pm
DEN
-
KGS
18h 30m
1 stop
Lufthansa Logo
7:55 pm - 1:45 pm
KGS
-
DEN
26h 50m
1 stop
$902Lufthansa
Fri, Aug 14 - Wed, Aug 19
Multiple Airlines Logo
4:40 pm - 7:45 pm
DEN
-
KGS
18h 05m
2 stops
Multiple Airlines Logo
7:55 pm - 1:45 pm
KGS
-
DEN
26h 50m
1 stop
$917Multiple Airlines
Fri, Aug 14 - Wed, Aug 19
Lufthansa Logo
4:05 pm - 7:05 pm
DEN
-
KGS
18h 00m
1 stop
Lufthansa Logo
7:55 pm - 2:20 pm
KGS
-
DEN
27h 25m
1 stop
$935Lufthansa
Tue, Oct 6 - Wed, Oct 21
Lufthansa Logo
4:05 pm - 7:05 pm
DEN
-
KGS
18h 00m
1 stop
Lufthansa Logo
7:55 pm - 2:20 pm
KGS
-
DEN
27h 25m
1 stop
$937Lufthansa
Tue, Oct 6 - Wed, Oct 21
Lufthansa Logo
4:40 pm - 7:05 pm
DEN
-
KGS
17h 25m
2 stops
Lufthansa Logo
7:55 pm - 2:20 pm
KGS
-
DEN
27h 25m
1 stop
$939Lufthansa
Tue, Oct 6 - Wed, Oct 21
Lufthansa Logo
4:40 pm - 7:05 pm
DEN
-
KGS
17h 25m
2 stops
Lufthansa Logo
7:55 pm - 2:20 pm
KGS
-
DEN
27h 25m
1 stop
$941Lufthansa
Tue, Oct 6 - Wed, Oct 21
Lufthansa Logo
4:15 pm - 7:05 pm
DEN
-
KGS
17h 50m
1 stop
Lufthansa Logo
1:30 pm - 3:40 pm
KGS
-
DEN
35h 10m
1 stop
$950Lufthansa
Tue, Sep 8 - Wed, Sep 23
Lufthansa Logo
4:40 pm - 7:05 pm
DEN
-
KGS
17h 25m
2 stops
Lufthansa Logo
1:30 pm - 3:40 pm
KGS
-
DEN
35h 10m
1 stop
$954Lufthansa
Tue, Sep 8 - Wed, Sep 23
Lufthansa Logo
3:40 pm - 7:45 pm
DEN
-
KGS
19h 05m
2 stops
Lufthansa Logo
1:30 pm - 11:53 pm
KGS
-
DEN
43h 23m
2 stops
$956Lufthansa
Fri, Aug 14 - Wed, Aug 19
Multiple Airlines Logo
4:15 pm - 7:05 pm
DEN
-
KGS
17h 50m
1 stop
Multiple Airlines Logo
8:30 pm - 11:08 pm
KGS
-
DEN
35h 38m
2 stops
$977Multiple Airlines
Tue, Sep 8 - Tue, Sep 22

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Austrian Airlines flights from Denver to Kos

Our best Austrian Airlines deals on Denver to Kos flight tickets
Austrian Airlines
Sep 6
DEN9:45 amDenver Intl
38h 30m
2 stops
KGS9:15 amKos
Sep 24
KGS9:10 pmKos
32h 07m
2 stops
DEN8:17 pmDenver Intl
$1,027
Austrian Airlines
Oct 4
DEN11:35 amDenver Intl
23h 25m
2 stops
KGS8:00 pmKos
Oct 22
KGS9:10 pmKos
32h 07m
2 stops
DEN8:17 pmDenver Intl
$1,031
Austrian Airlines
Sep 6
DEN9:45 amDenver Intl
25h 15m
2 stops
KGS8:00 pmKos
Sep 25
KGS9:40 pmKos
31h 37m
2 stops
DEN8:17 pmDenver Intl
$1,087

Lufthansa flights from Denver to Kos

Our best Lufthansa deals on Denver to Kos flight tickets
Lufthansa
Aug 14
DEN4:15 pmDenver Intl
18h 30m
1 stop
KGS7:45 pmKos
Aug 19
KGS7:55 pmKos
26h 50m
1 stop
DEN1:45 pmDenver Intl
$902
Lufthansa
Oct 6
DEN4:05 pmDenver Intl
18h 00m
1 stop
KGS7:05 pmKos
Oct 21
KGS7:55 pmKos
27h 25m
1 stop
DEN2:20 pmDenver Intl
$935
Lufthansa
Oct 6
DEN4:05 pmDenver Intl
18h 00m
1 stop
KGS7:05 pmKos
Oct 21
KGS7:55 pmKos
27h 25m
1 stop
DEN2:20 pmDenver Intl
$937

momondo 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, momondo users made 832,500 searches. Data last updated June 29, 2026.
Use the filters below to find and compare flights from Denver to Kos that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverKos

DEN - KGS

DENKGS

Denver Intl

Fri 8/14

4:15 pm-7:45 pm

1 stop18h 30m

Kos

Wed 8/19

7:55 pm-1:45 pm

1 stop26h 50m

$902

DenverKos

DEN - KGS

DENKGS

Denver Intl

Fri 8/14

4:40 pm-7:45 pm

2 stops18h 05m

Kos

Wed 8/19

7:55 pm-1:45 pm

1 stop26h 50m

$917

DenverKos

DEN - KGS

DENKGS

Denver Intl

Tue 10/6

4:05 pm-7:05 pm

1 stop18h 00m

Kos

Wed 10/21

7:55 pm-2:20 pm

1 stop27h 25m

$935

DenverKos

DEN - KGS

DENKGS

Denver Intl

Tue 10/6

4:05 pm-7:05 pm

1 stop18h 00m

Kos

Wed 10/21

7:55 pm-2:20 pm

1 stop27h 25m

$937
Quickest round-trip

DenverKos

DEN - KGS

DENKGS

Denver Intl

Tue 10/6

4:40 pm-7:05 pm

2 stops17h 25m

Kos

Wed 10/21

7:55 pm-2:20 pm

1 stop27h 25m

$939

DenverKos

DEN - KGS

DENKGS

Denver Intl

Tue 10/6

4:40 pm-7:05 pm

2 stops17h 25m

Kos

Wed 10/21

7:55 pm-2:20 pm

1 stop27h 25m

$941

DenverKos

DEN - KGS

DENKGS

Denver Intl

Tue 9/8

4:15 pm-7:05 pm

1 stop17h 50m

Kos

Wed 9/23

1:30 pm-3:40 pm

1 stop35h 10m

$950

DenverKos

DEN - KGS

DENKGS

Denver Intl

Tue 9/8

4:40 pm-7:05 pm

2 stops17h 25m

Kos

Wed 9/23

1:30 pm-3:40 pm

1 stop35h 10m

$954

DenverKos

DEN - KGS

DENKGS

Denver Intl

Fri 8/14

3:40 pm-7:45 pm

2 stops19h 05m

Kos

Wed 8/19

1:30 pm-11:53 pm

2 stops43h 23m

$956

DenverKos

DEN - KGS

DENKGS

Denver Intl

Tue 9/8

4:15 pm-7:05 pm

1 stop17h 50m

Kos

Tue 9/22

8:30 pm-11:08 pm

2 stops35h 38m

$977

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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See travel insights to Kos from

How to get the cheapest flight ticket from Denver to Kos

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Denver Intl to Kos?

SWISS and Lufthansa are the most popular carriers operating from Denver Intl to Kos

When to book flights from Denver to Kos

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to Kos according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Denver to Kos (DEN to KGS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Denver to Kos

Fastest flight time

17h 50m

Direct flights

None
The fastest flight from Denver to Kos takes 17h 50m
There are no direct flights from Denver to Kos. There are no popular flight routes from Denver to Kos.
Search flight deals

Frequently asked questions about flying from Denver to Kos

  • How far is Denver Intl to Kos by plane?

    There are 6332.4 mi between Denver Intl and Kos. 17h 50m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Denver Intl Airport to Kos Airport?

    Prices for flights from Denver Intl Airport to Kos Airport are updated daily.

  • How old do you have to be to fly from Denver Intl Airport to Kos Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Denver Intl Airport to Kos Airport.

  • What documentation or ID do you need to fly to Kos Airport?

    The travel and health documents required for your trip to Kos Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Kos Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near Kos?

Book flights to Kos if you plan to visit one of these locations
Kardamena
Marmari

Why use momondo?

Why should I use momondo to find a flight deal from Denver to Kos?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Denver to Kos. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Denver to Kos with flexible booking policies on momondo?

momondo does allow users to show only those flights to Kos from Denver which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Denver to Kos?

momondo helps you find the best flight between Denver and Kos by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Denver to Kos right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Denver to Kos flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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