Cheap Swiss International Air Lines flights from Washington to Kos (IAD to KGS)

Find The Best Day To Fly from Washington to Kos

Amazing Swiss International Air Lines IAD to KGS Flight Deals

The cheapest flights to Kos Island Intl. found within the past 7 days were $611 round trip and one way. Prices and availability subject to change. Additional terms may apply.

Mon, Aug 18 - Mon, Aug 25
IAD
Washington
KGS
Kos
$611 Roundtrip, found 1 day ago
$611
Roundtrip
found 1 day ago
Select Swiss International Air Lines flight, departing Mon, Aug 18 from Washington to Kos, returning Mon, Aug 25, priced at $611 found 1 day ago
Mon, Aug 18 - Mon, Aug 25
IAD
Washington
KGS
Kos
$671 Roundtrip, found 1 day ago
$671
Roundtrip
found 1 day ago
Select Swiss International Air Lines flight, departing Mon, Aug 18 from Washington to Kos, returning Mon, Aug 25, priced at $671 found 1 day ago
Mon, Sep 15 - Mon, Sep 22
IAD
Washington
KGS
Kos
$671 Roundtrip, found 5 days ago
$671
Roundtrip
found 5 days ago
Select Swiss International Air Lines flight, departing Mon, Sep 15 from Washington to Kos, returning Mon, Sep 22, priced at $671 found 5 days ago
Mon, Aug 18 - Mon, Aug 25
IAD
Washington
KGS
Kos
$690 Roundtrip, found 1 day ago
$690
Roundtrip
found 1 day ago
Select Swiss International Air Lines flight, departing Mon, Aug 18 from Washington to Kos, returning Mon, Aug 25, priced at $690 found 1 day ago

KGS From IAD Economy Coach Packages on Similar Airlines

Price found within the past 48 hours. Click for updated prices.
Mitsis Norida

Mitsis Norida

5 out of 5
per person
Aug 6 - Aug 12
found 1 day ago
Roundtrip non-stop flight included
Washington (IAD) to Kos (KGS)
D Andrea Lagoon All Suites - Adults only

D Andrea Lagoon All Suites - Adults only

5 out of 5
per person
Aug 6 - Aug 12
found 1 day ago
Roundtrip non-stop flight included
Washington (IAD) to Kos (KGS)
Atlantica Belvedere Resort - Adults Only

Atlantica Belvedere Resort - Adults Only

5 out of 5
per person
Aug 6 - Aug 12
found 1 day ago
Roundtrip non-stop flight included
Washington (IAD) to Kos (KGS)
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Swiss International Air Lines Airports
Hop on a(n) Swiss International Air Lines flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
ZRHCHEZurich9
FRADEUFrankfurt Intl.3
PVGCHNPudong Intl.3
LHRGBRHeathrow3
GVACHECointrin Intl.2
EWRUSALiberty Intl.2
SINSGPChangi2
HNDJPNHaneda1
ARNSWEArlanda1
HAMDEUHamburg1

Travelers ❤️ these 🏨 after their flight to Kos

Neptune Luxury Resort

Neptune Luxury Resort

5 out of 5
Mastichari, Kos
Free water park access, a full-service spa, and 4 outdoor pools are all featured at this luxury hotel. Relax with sun loungers and beach umbrellas, and enjoy ...
9.4/10 Exceptional! (406 reviews)
"Tolles Hotel, aber für Strandurlaub nicht das richtige. Der eine richtige Strand ist relativ klein und sehr schnell voll. Der größere „Strand“ ist hinter Steinen verborgen, sodass man nur an zwei oder drei Stellen ins Wasser kann - sollte daher nicht als Strand beworben werden. Aber ansonsten top ..."

Reviewed on Jul 5, 2025

Neptune Luxury Resort
Kouros Palace Hotel

Kouros Palace Hotel

5 out of 5
Mastichari, Kos, Dodecanese
This hotel features a restaurant, a gym, and a bar/lounge. Dine at the beachfront restaurant and relax with beach umbrellas. There's fun for all ages with a ...
7.6/10 Good! (42 reviews)
"Far from shopping stores"

Reviewed on Oct 9, 2024

Kouros Palace Hotel
Eurovillage Achilleas Hotel

Eurovillage Achilleas Hotel

4 out of 5
Mastichari, Kos
A full-service spa, 2 restaurants, and an outdoor pool are all featured at this eco-certified aparthotel. Relax with sun loungers and beach umbrellas, and cool ...
7.2/10 Good! (61 reviews)
"Great place walking distance to shopping and dining area."

Reviewed on Jul 7, 2025

Eurovillage Achilleas Hotel
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.