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Kos

$252+ Cheap flights from Pennsylvania to Kos (KGS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — KGS
Jul 1 — Jul 81
Tue 7/1
Tue 7/8
1 adult, Economy
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Cheap flight deals from Pennsylvania to Kos

Keep the following information in mind while searching for Pennsylvania to Kos flight deals. Data was last updated June 26, 2025.

Round-trip from

$465
(SWISS)

One-way from

$252
(Trip.com)
From Pennsylvania to Kos
Search Deals
One-way flight from Pennsylvania to Kos
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Find flight deals from Pennsylvania to Kos

Cheapest flights from Pennsylvania to Kos
Explore the most affordable flight options available from Pennsylvania to Kos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 26, 2025.

This SWISS deal was found by Cheapflights users on 6/24. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/159:50 pmEWR - KGS
1 stop34h 20mSWISS
Thu 10/2311:00 amKGS - EWR
1 stop16h 10mSWISS
Deal found 6/24$445
This Lufthansa deal was found by Cheapflights users on 6/24. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/158:30 pmEWR - KGS
2 stops15h 10mLufthansa
Wed 10/227:55 pmKGS - EWR
1 stop29h 50mLufthansa
Deal found 6/24$492
This Ovago deal was found by Cheapflights users on 6/26. 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.
Mon 7/149:50 pmEWR - KGS
1 stop14h 50mMultiple Airlines
Tue 8/511:15 amKGS - EWR
1 stop32h 55mMultiple Airlines
Deal found 6/26$509
This SWISS deal was found by Cheapflights users on 6/25. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/188:45 pmIAD - KGS
1 stop15h 55mSWISS
Thu 8/2811:00 amKGS - IAD
1 stop36h 15mSWISS
Deal found 6/25$670
This FlightHub deal was found by Cheapflights users on 6/25. 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.
Wed 8/206:10 pmIAD - KGS
1 stop17h 30mMultiple Airlines
Mon 8/2511:00 amKGS - IAD
1 stop36h 15mMultiple Airlines
Deal found 6/25$675
This Lufthansa deal was found by Cheapflights users on 6/25. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/29:50 pmJFK - KGS
1 stop13h 50mLufthansa
Thu 7/177:30 pmKGS - JFK
1 stop31h 35mLufthansa
Deal found 6/25$683
This SWISS deal was found by Cheapflights users on 6/23. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/57:25 pmJFK - KGS
2 stops41h 15mSWISS
Wed 10/158:40 pmKGS - JFK
2 stops24h 40mSWISS
Deal found 6/23$687
This Lufthansa deal was found by Cheapflights users on 6/25. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/206:10 pmIAD - KGS
1 stop17h 30mLufthansa
Wed 8/271:30 pmKGS - IAD
1 stop31h 00mLufthansa
Deal found 6/25$688
This FlightHub deal was found by Cheapflights users on 6/24. 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 7/295:30 pmJFK - KGS
1 stop18h 35mMultiple Airlines
Sun 8/33:15 pmKGS - JFK
2 stops54h 05mMultiple Airlines
Deal found 6/24$700
This Brussels Airlines deal was found by Cheapflights users on 6/25. 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 Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/15:30 pmJFK - KGS
2 stops33h 55mBrussels Airlines
Wed 7/1611:15 amKGS - JFK
2 stops34h 45mBrussels Airlines
Deal found 6/25$710
This Mytrip deal was found by Cheapflights users on 6/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/78:45 amLGA - KGS
3 stops24h 45mMultiple Airlines
Thu 7/178:35 amKGS - LGA
2 stops16h 55mMultiple Airlines
Deal found 6/25$716
This FlightHub deal was found by Cheapflights users on 6/25. 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.
Sun 6/296:10 pmEWR - KGS
2 stops18h 50mAustrian Airlines
Wed 7/169:40 pmKGS - EWR
2 stops22h 45mAustrian Airlines
Deal found 6/25$746

Cheapflights Fare Finder

Customize your flight search to find flights from Pennsylvania 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 June 26, 2025.
Use the filters below to find and compare flights from Pennsylvania to Kos that are best for you.

Fly from

Pennsylvania

Fly to

Kos

Route

Depart

Return

Price

NewarkKos

EWR - KGS

EWRKGS

Newark

Wed 10/15

9:50 pm-3:10 pm

1 stop34h 20m

Kos

Thu 10/23

11:00 am-8:10 pm

1 stop16h 10m

$445

NewarkKos

EWR - KGS

EWRKGS

Newark

Wed 10/15

8:30 pm-6:40 pm

2 stops15h 10m

Kos

Wed 10/22

7:55 pm-6:45 pm

1 stop29h 50m

$492

NewarkKos

EWR - KGS

EWRKGS

Newark

Mon 7/14

9:50 pm-7:40 pm

1 stop14h 50m

Kos

Tue 8/5

11:15 am-1:10 pm

1 stop32h 55m

$509

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Mon 8/18

8:45 pm-7:40 pm

1 stop15h 55m

Kos

Thu 8/28

11:00 am-4:15 pm

1 stop36h 15m

$670

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Wed 8/20

6:10 pm-6:40 pm

1 stop17h 30m

Kos

Mon 8/25

11:00 am-4:15 pm

1 stop36h 15m

$675

New YorkKos

JFK - KGS

JFKKGS

New York John F Kennedy Intl

Wed 7/2

9:50 pm-6:40 pm

1 stop13h 50m

Kos

Thu 7/17

7:30 pm-8:05 pm

1 stop31h 35m

$683

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Wed 8/20

6:10 pm-6:40 pm

1 stop17h 30m

Kos

Wed 8/27

1:30 pm-1:30 pm

1 stop31h 00m

$688

New YorkKos

JFK - KGS

JFKKGS

New York John F Kennedy Intl

Thu 8/7

4:15 pm-3:10 pm

1 stop15h 55m

Kos

Tue 8/19

8:30 pm-12:50 pm

1 stop23h 20m

$699

New YorkKos

JFK - KGS

JFKKGS

New York John F Kennedy Intl

Tue 7/29

5:30 pm-7:05 pm

1 stop18h 35m

Kos

Sun 8/3

3:15 pm-2:20 pm

2 stops54h 05m

$700

New YorkKos

JFK - KGS

JFKKGS

New York John F Kennedy Intl

Tue 7/1

5:30 pm-10:25 am

2 stops33h 55m

Kos

Wed 7/16

11:15 am-3:00 pm

2 stops34h 45m

$710

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/25

Showing 1-10 of 34 results
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Best time to book a flight from Pennsylvania to Kos

Have a flexible travel schedule? Discover the best time to fly to Kos from Pennsylvania 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.

Cheapflights Insights

Everything you need to know about your flight from Pennsylvania to Kos
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Kos

Get insights into the airlines that provide service to Kos. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kos. Reviews last updated June 26, 2025.
See what other customers who have flown with Aegean Airlines, Emirates, and Austrian Airlines from Pennsylvania to Kos have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aegean Airlines
8.2
Very good
761 reviews

Entertainment

7.0

Boarding

7.8

Crew

8.6

Overall

8.2

Comfort

7.8

Food

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
Aegean Airlines
8.2
Very good
761 reviews
Aegean Airlines
8.2
Very good
761 reviews

Entertainment

7.0

Boarding

7.8

Crew

8.6

Overall

8.2

Comfort

7.8

Food

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
Emirates
8.1
Very good
3,274 reviews
Aegean Airlines
8.2
Very good
761 reviews

Entertainment

7.0

Boarding

7.8

Crew

8.6

Overall

8.2

Comfort

7.8

Food

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
Austrian Airlines
7.6
Good
805 reviews
Aegean Airlines
8.2
Very good
761 reviews

Entertainment

7.0

Boarding

7.8

Crew

8.6

Overall

8.2

Comfort

7.8

Food

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
SWISS
7.5
Good
1,649 reviews
Aegean Airlines
8.2
Very good
761 reviews

Entertainment

7.0

Boarding

7.8

Crew

8.6

Overall

8.2

Comfort

7.8

Food

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
Brussels Airlines
7.4
Good
358 reviews
Aegean Airlines
8.2
Very good
761 reviews

Entertainment

7.0

Boarding

7.8

Crew

8.6

Overall

8.2

Comfort

7.8

Food

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you

Related info for your journey

Find useful and relevant information for your journey from Pennsylvania to Kos. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Kos from Pennsylvania?

    Kos (KGS) is the airport you will fly into if you book a flight from Pennsylvania to Kos. It is only a 12.8 mi journey from Kos (KGS) to Kos’s city center.

  • What are the cheapest airlines to fly from Pennsylvania to Kos one-way?

    $494 is the cheapest one-way deal found within the past few days, from SWISS. You may also be able to find cheap deals on Lufthansa and Brussels Airlines, with prices starting from $497 and $524, respectively.

  • What are the most popular routes from Pennsylvania to Kos?

    Most travelers choose New York John F Kennedy Intl - Kos, Newark - Kos or Washington, D.C. Dulles Intl - Kos when deciding on the best route from Pennsylvania to Kos.

  • Can I find deals for flights from Pennsylvania to Kos that include hotel bookings?

    Yes. In addition to deals on Pennsylvania to Kos flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Pennsylvania to Kos?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pennsylvania to Kos.

  • Can I find deals for business class flights from Pennsylvania to Kos?

    Yes. Cheapflights offers flight deals from Pennsylvania 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.

See more FAQs

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Alternative routes for Pennsylvania to Kos

See prices for flight routes from nearby airports that may be better suited for you.
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