$123 Cheap Aegean flights Frankfurt (FRA) to Kos (KGS)

Finding cheap one-way Aegean Airlines flights from FRA to KGS from $123 on Expedia is a breeze — just filter by "Price (lowest to highest)." Alternatively, check out our affordable return fares from $219 for your next adventure.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

To discover affordable flights from FRA to KGS with Aegean Airlines, begin searching about one month before your planned departure. You can save 17% when you book your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Another helpful tip? Booking on Sunday offers average savings of 17% compared to Friday (the most expensive day).**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

Filter your results by "Early Morning" and "Morning" to find the earliest flights from FRA to KGS. Setting off early means you're less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.

Jetting off from FRA to KGS with Aegean Airlines comes with a range of perks, including top-tier customer service and a 4-star airline rating. Plus, when booking through Expedia, One Key™ members can earn OneKeyCash™* to spend on select future travel purchases. That's in addition to the Miles+Bonus points you can earn with Aegean Airlines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.