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Cheap flights from Massachusetts to Kos from $342

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Massachusetts to Kos departing on 7/6. 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 Massachusetts to Kos

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:40 pm - 8:35 pm
BOS
-
KGS
16h 55m
2 stops
Multiple Airlines Logo
8:35 am - 9:20 pm
KGS
-
BOS
18h 45m
2 stops
$933Multiple Airlines
Thu, Mar 19 - Thu, Mar 26
Multiple Airlines Logo
10:20 pm - 4:10 pm
BOS
-
KGS
35h 50m
3 stops
Multiple Airlines Logo
4:40 pm - 2:55 pm
KGS
-
BOS
28h 15m
3 stops
$968Multiple Airlines
Thu, Mar 19 - Thu, Mar 26
Multiple Airlines Logo
9:40 pm - 9:00 am
BOS
-
KGS
29h 20m
3 stops
Multiple Airlines Logo
8:35 am - 9:20 pm
KGS
-
BOS
18h 45m
2 stops
$1,224Multiple Airlines
Thu, Mar 19 - Thu, Mar 26
Emirates Logo
11:05 pm - 12:35 am
BOS
-
KGS
42h 30m
2 stops
Emirates Logo
1:05 pm - 2:10 pm
KGS
-
BOS
32h 05m
2 stops
$1,774Emirates
Wed, May 6 - Sun, May 10
Emirates Logo
11:05 pm - 12:35 am
BOS
-
KGS
42h 30m
2 stops
Emirates Logo
1:05 pm - 2:10 pm
KGS
-
BOS
32h 05m
2 stops
$1,775Emirates
Wed, May 6 - Sun, May 10
Emirates Logo
11:05 pm - 5:05 pm
BOS
-
KGS
36h 00m
2 stops
Emirates Logo
12:35 pm - 2:30 pm
KGS
-
BOS
31h 55m
2 stops
$5,221Emirates
Fri, Mar 20 - Fri, Mar 27

Emirates flights from Massachusetts to Kos

Our best Emirates deals on Massachusetts to Kos flight tickets
Emirates
May 6
BOS11:05 pmBoston Logan Intl
42h 30m
2 stops
KGS12:35 amKos
May 10
KGS1:05 pmKos
32h 05m
2 stops
BOS2:10 pmBoston Logan Intl
$1,774
Emirates
May 6
BOS11:05 pmBoston Logan Intl
42h 30m
2 stops
KGS12:35 amKos
May 10
KGS1:05 pmKos
32h 05m
2 stops
BOS2:10 pmBoston Logan Intl
$1,775
Emirates
Mar 20
BOS11:05 pmBoston Logan Intl
36h 00m
2 stops
KGS5:05 pmKos
Mar 27
KGS12:35 pmKos
31h 55m
2 stops
BOS2:30 pmBoston Logan Intl
$5,221

momondo 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, momondo users made 832,500 searches. Data last updated February 5, 2026.
Use the filters below to find and compare flights from Massachusetts to Kos that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Thu 3/19

9:40 pm-8:35 pm

2 stops16h 55m

Kos

Thu 3/26

8:35 am-9:20 pm

2 stops18h 45m

$933

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Thu 3/19

10:20 pm-4:10 pm

3 stops35h 50m

Kos

Thu 3/26

4:40 pm-2:55 pm

3 stops28h 15m

$968

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Thu 3/19

9:40 pm-9:00 am

3 stops29h 20m

Kos

Thu 3/26

8:35 am-9:20 pm

2 stops18h 45m

$1,224

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Wed 5/6

11:05 pm-12:35 am

2 stops42h 30m

Kos

Sun 5/10

1:05 pm-2:10 pm

2 stops32h 05m

$1,774

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Wed 5/6

11:05 pm-12:35 am

2 stops42h 30m

Kos

Sun 5/10

1:05 pm-2:10 pm

2 stops32h 05m

$1,775

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Fri 3/20

11:05 pm-5:05 pm

2 stops36h 00m

Kos

Fri 3/27

12:35 pm-2:30 pm

2 stops31h 55m

$5,221

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Mon 7/6

8:05 pm-11:00 pm

3 stops43h 55m

$342

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Mon 7/6

8:05 pm-11:00 pm

3 stops43h 55m

$352

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Sun 7/5

8:50 pm-10:35 pm

3 stops18h 45m

$374

BostonKos

BOS - KGS

BOSKGS

Boston Logan Intl

Sun 7/5

8:50 pm-10:35 pm

3 stops18h 45m

$375

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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Cheap Massachusetts to Kos flight deals and tips

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

Fastest flight time

17h 30m

Direct flights

None
The fastest flight from Massachusetts to Kos takes 17h 30m
There are no direct flights from Massachusetts to Kos. There are no popular flight routes from Massachusetts to Kos.
Search flight deals

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

    Prices for flights from Massachusetts to Kos Airport refresh daily.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Massachusetts 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.

  • How do I get Price Alerts for flights from Massachusetts to Kos?

    Price Alerts will notify you by email when the price for flights to Kos from Massachusetts decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Massachusetts to Kos with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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 Massachusetts to Kos?

It is quick and easy to find Massachusetts to Kos flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Kos that suits you.

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

Yes. All flights to Kos from Massachusetts on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to Kos from Massachusetts. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Massachusetts to Kos now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Kos and let you know when they change.

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