How to find the cheapest flight from
Boston (BOS) to Kos (KGS)
What is the cheapest day to fly round-trip from Boston to Kos?
Saturday is generally a great day to depart. Flying on this day could help you save up to 72%.
When is the cheapest time to fly from Boston to Kos (BOS - KGS)?
It’s typically best to fly out from Boston to Kos at noon. Doing so could potentially save you 5% on the flight price compared to flying in the morning, which is usually more expensive.
Related info for your journey
Useful info, stats and facts about Boston to Kos flights.
Alternative routes for Boston to Kos
Destination information for Kos
Things to know before you go. Useful info for your trip from Boston to Kos