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Cheap flights from Denver to Kos from $439

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 7/5. 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
0 bags

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Find the cheapest flights from Denver to Kos

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
4:45 pm - 7:05 pm
DEN
-
KGS
17h 20m
2 stops
Lufthansa Logo
7:55 pm - 2:20 pm
KGS
-
DEN
27h 25m
1 stop
$988Lufthansa
Tue, Sep 15 - Wed, Sep 30
Lufthansa Logo
4:15 pm - 7:05 pm
DEN
-
KGS
17h 50m
1 stop
Lufthansa Logo
7:55 pm - 2:20 pm
KGS
-
DEN
27h 25m
1 stop
$989Lufthansa
Tue, Sep 15 - Wed, Sep 30
Lufthansa Logo
4:45 pm - 7:05 pm
DEN
-
KGS
17h 20m
2 stops
Lufthansa Logo
7:55 pm - 3:40 pm
KGS
-
DEN
28h 45m
2 stops
$996Lufthansa
Tue, Sep 15 - Wed, Sep 30
Austrian Airlines Logo
11:30 am - 8:50 pm
DEN
-
KGS
24h 20m
2 stops
Austrian Airlines Logo
9:10 pm - 8:22 pm
KGS
-
DEN
32h 12m
2 stops
$1,330Austrian Airlines
Thu, Jun 25 - Thu, Jul 2
Multiple Airlines Logo
10:30 am - 8:55 pm
DEN
-
KGS
25h 25m
3 stops
Multiple Airlines Logo
9:45 pm - 8:12 am
KGS
-
DEN
43h 27m
3 stops
$1,342Multiple Airlines
Tue, Sep 15 - Wed, Sep 30
Multiple Airlines Logo
11:35 am - 5:30 pm
DEN
-
KGS
20h 55m
3 stops
Multiple Airlines Logo
5:40 pm - 6:25 pm
KGS
-
DEN
33h 45m
2 stops
$1,372Multiple Airlines
Tue, Sep 15 - Wed, Sep 30
Multiple Airlines Logo
5:40 pm - 8:50 am
DEN
-
KGS
30h 10m
1 stop
Multiple Airlines Logo
9:10 pm - 8:22 pm
KGS
-
DEN
32h 12m
2 stops
$1,523Multiple Airlines
Thu, Jun 25 - Thu, Jul 2
Multiple Airlines Logo
9:40 am - 2:50 pm
DEN
-
KGS
20h 10m
3 stops
Multiple Airlines Logo
8:35 am - 7:00 pm
KGS
-
DEN
19h 25m
2 stops
$1,779Multiple Airlines
Thu, Jun 25 - Thu, Jul 2
Multiple Airlines Logo
6:35 pm - 9:50 am
DEN
-
KGS
30h 15m
3 stops
Multiple Airlines Logo
9:40 pm - 12:16 am
KGS
-
DEN
35h 36m
3 stops
$3,193Multiple Airlines
Thu, Jun 25 - Thu, Jul 2

Lufthansa flights from Denver to Kos

Our best Lufthansa deals on Denver to Kos flight tickets
Lufthansa
Sep 15
DEN4:45 pmDenver Intl
17h 20m
2 stops
KGS7:05 pmKos
Sep 30
KGS7:55 pmKos
27h 25m
1 stop
DEN2:20 pmDenver Intl
$988
Lufthansa
Sep 15
DEN4:15 pmDenver Intl
17h 50m
1 stop
KGS7:05 pmKos
Sep 30
KGS7:55 pmKos
27h 25m
1 stop
DEN2:20 pmDenver Intl
$989
Lufthansa
Sep 15
DEN4:45 pmDenver Intl
17h 20m
2 stops
KGS7:05 pmKos
Sep 30
KGS7:55 pmKos
28h 45m
2 stops
DEN3:40 pmDenver Intl
$996

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 May 13, 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

Tue 9/15

4:45 pm-7:05 pm

2 stops17h 20m

Kos

Wed 9/30

7:55 pm-2:20 pm

1 stop27h 25m

$988

DenverKos

DEN - KGS

DENKGS

Denver Intl

Tue 9/15

4:15 pm-7:05 pm

1 stop17h 50m

Kos

Wed 9/30

7:55 pm-2:20 pm

1 stop27h 25m

$989

DenverKos

DEN - KGS

DENKGS

Denver Intl

Tue 9/15

4:45 pm-7:05 pm

2 stops17h 20m

Kos

Wed 9/30

7:55 pm-3:40 pm

2 stops28h 45m

$996

DenverKos

DEN - KGS

DENKGS

Denver Intl

Thu 6/25

11:30 am-8:50 pm

2 stops24h 20m

Kos

Thu 7/2

9:10 pm-8:22 pm

2 stops32h 12m

$1,330

DenverKos

DEN - KGS

DENKGS

Denver Intl

Tue 9/15

10:30 am-8:55 pm

3 stops25h 25m

Kos

Wed 9/30

9:45 pm-8:12 am

3 stops43h 27m

$1,342

DenverKos

DEN - KGS

DENKGS

Denver Intl

Tue 9/15

11:35 am-5:30 pm

3 stops20h 55m

Kos

Wed 9/30

5:40 pm-6:25 pm

2 stops33h 45m

$1,372

DenverKos

DEN - KGS

DENKGS

Denver Intl

Thu 6/25

5:40 pm-8:50 am

1 stop30h 10m

Kos

Thu 7/2

9:10 pm-8:22 pm

2 stops32h 12m

$1,523
Quickest round-trip

DenverKos

DEN - KGS

DENKGS

Denver Intl

Thu 6/25

9:40 am-2:50 pm

3 stops20h 10m

Kos

Thu 7/2

8:35 am-7:00 pm

2 stops19h 25m

$1,779

DenverKos

DEN - KGS

DENKGS

Denver Intl

Thu 6/25

6:35 pm-9:50 am

3 stops30h 15m

Kos

Thu 7/2

9:40 pm-12:16 am

3 stops35h 36m

$3,193
Cheapest one-way

DenverKos

DEN - KGS

DENKGS

Denver Intl

Sun 7/5

4:40 pm-8:25 pm

3 stops42h 45m

$439

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?

Lufthansa is the most popular carrier 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

24h 20m

Direct flights

None
The fastest flight from Denver to Kos takes 24h 20m
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. 24h 20m 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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