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Kos

$291+ Cheap flights from Massachusetts 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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KGS
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap flight deals from Massachusetts to Kos

Keep the following information in mind while searching for Massachusetts to Kos flight deals. Data was last updated July 31, 2025.

Round-trip from

$867
(Trip.com)

One-way from

$291
(Kiwi.com)
From Massachusetts to Kos
Search Deals
One-way flight from Massachusetts to Kos
Search Deals

Find flight deals from Massachusetts to Kos

Cheapest flights from Massachusetts to Kos
Explore the most affordable flight options available from Massachusetts to Kos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This Trip.com deal was found by Cheapflights users on 7/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/46:10 pmBOS - KGS
2 stops32h 55mMultiple Airlines
Sun 9/1410:20 amKGS - BOS
2 stops35h 00mMultiple Airlines
Deal found 7/30$867
This Brussels Airlines deal was found by Cheapflights users on 7/31. 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.
Sun 9/148:05 pmBOS - KGS
2 stops55h 15mBrussels Airlines
Sun 9/2111:25 amKGS - BOS
2 stops37h 15mBrussels Airlines
Deal found 7/31$1,124
This SWISS deal was found by Cheapflights users on 7/30. 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.
Sat 9/139:40 pmBOS - KGS
1 stop29h 30mSWISS
Sat 9/208:45 pmKGS - BOS
1 stop25h 40mSWISS
Deal found 7/30$1,149
This Emirates deal was found by Cheapflights users on 7/30. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1311:05 pmBOS - KGS
2 stops35h 25mEmirates
Sat 9/2011:25 amKGS - BOS
2 stops33h 45mEmirates
Deal found 7/30$2,305
This Austrian Airlines deal was found by Cheapflights users on 7/31. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/142:40 pmBOS - KGS
2 stops22h 20mAustrian Airlines
Sun 9/2110:00 amKGS - BOS
1 stop34h 50mAustrian Airlines
Deal found 7/31$2,762

Cheapflights Fare Finder

 
Customize your flight search to find flights from Massachusetts 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 July 31, 2025.
Use the filters below to find and compare flights from Massachusetts to Kos that are best for you.

Fly from

Massachusetts

Fly to

Kos

Route

Depart

Return

Price

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Thu 9/4

6:10 pm-10:05 am

2 stops32h 55m

Kos

Sun 9/14

10:20 am-2:20 pm

2 stops35h 00m

$867

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Sun 9/14

8:05 pm-10:20 am

2 stops55h 15m

Kos

Sun 9/21

11:25 am-5:40 pm

2 stops37h 15m

$1,124

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Sat 9/13

9:40 pm-10:10 am

1 stop29h 30m

Kos

Sat 9/20

8:45 pm-3:25 pm

1 stop25h 40m

$1,149

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Sat 9/13

11:05 pm-5:30 pm

2 stops35h 25m

Kos

Sat 9/20

11:25 am-2:10 pm

2 stops33h 45m

$2,305

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Sun 9/14

2:40 pm-8:00 pm

2 stops22h 20m

Kos

Sun 9/21

10:00 am-1:50 pm

1 stop34h 50m

$2,762

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Sun 8/31

9:25 pm-2:25 pm

1 stop34h 00m

$291

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Best time to book a flight from Massachusetts to Kos

Have a flexible travel schedule? Discover the best time to fly to Kos from Massachusetts 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 Massachusetts 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 July 31, 2025.
Peruse reviews from past customers who have flown with Emirates, Austrian Airlines, and SWISS from Massachusetts to Kos to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.1
Very good
3,300 reviews

Overall

8.1

Crew

8.3

Boarding

8.1

Entertainment

8.2

Comfort

8.0

Food

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Emirates
8.1
Very good
3,300 reviews
Emirates
8.1
Very good
3,300 reviews

Overall

8.1

Crew

8.3

Boarding

8.1

Entertainment

8.2

Comfort

8.0

Food

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Austrian Airlines
7.6
Good
823 reviews
Emirates
8.1
Very good
3,300 reviews

Overall

8.1

Crew

8.3

Boarding

8.1

Entertainment

8.2

Comfort

8.0

Food

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
SWISS
7.5
Good
1,686 reviews
Emirates
8.1
Very good
3,300 reviews

Overall

8.1

Crew

8.3

Boarding

8.1

Entertainment

8.2

Comfort

8.0

Food

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Brussels Airlines
7.3
Good
350 reviews
Emirates
8.1
Very good
3,300 reviews

Overall

8.1

Crew

8.3

Boarding

8.1

Entertainment

8.2

Comfort

8.0

Food

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Related info for your journey

Find useful and relevant information for your journey from Massachusetts 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 Massachusetts?

    For a flight from Massachusetts to Kos, you will be flying into Kos. Kos (KGS) is just 12.8 mi from the center of the city.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Massachusetts 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 Massachusetts to Kos

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Massachusetts to Kos

Discover the top 2 airlines that operate flights from Massachusetts to Kos. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$928Average$1,111FlexibilityNo cancel feeOn-time79%
LufthansaCheapest$981Average$1,081FlexibilityNo cancel feeOn-time76%

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