Affordable flights from Boston (BOS) to Kos (KGS) from US$ 739.99*
Upcoming flights from Boston to Kos
Boston
Kos
22.05.2025
from US$ 1.769.99*
Boston
Kos
24.05.2025
from US$ 1.769.99*
Boston
Kos
26.05.2025
from US$ 1.659.99*
Boston
Kos
29.05.2025
from US$ 1.769.99*
Boston
Kos
31.05.2025
from US$ 1.659.99*
Boston
Kos
02.06.2025
from US$ 1.659.99*
Boston
Kos
05.06.2025
from US$ 1.659.99*
Boston
Kos
07.06.2025
from US$ 1.979.99*
Boston
Kos
09.06.2025
from US$ 1.979.99*
Boston
Kos
12.06.2025
from US$ 1.769.99*
Boston
Kos
14.06.2025
from US$ 1.659.99*
Boston
Kos
16.06.2025
from US$ 1.659.99*
Boston
Kos
19.06.2025
from US$ 1.659.99*
Boston
Kos
21.06.2025
from US$ 1.659.99*
Boston
Kos
23.06.2025
from US$ 1.659.99*
Other flights from North America to Kos
weather Kos
Average
temperature (°C)
- 30
- 20
- 10
- 0
- -10
- -20
- -30
- JAN
- FEB
- MAR
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- AUG
- SEP
- OCT
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Dream destination Kos
Affordable fares now, when you take off on holiday with Condor!
You can book your Boston (BOS) - Kos (KGS) flight in Economy Class from just 739.99 US$*. The offer is valid in the month of October 2025, while stocks last.
For all those who want a little more luxury, but at an unbeatable price: In October 2025, flights start at 809.99 US$* in Premium Class – with more comfortable seats and many other extras.
Condor not only offers affordable shorthaul and mediumhaul flights, there are flight offers for longhaul flights as well.
Affordable and convenient holiday flights take off from your departure country, "USA". From May 2025 to October 2025, Condor flights to your dream destination will be roughly 2 a week! Book your Boston (BOS) - Kos (KGS) flight now, and look forward to your "Greece" destination!
Explore the culture of Kos while enjoying your beach holiday