Kos Island to Athens (KGS-ATH): nonstop upgrade & award space

Big Sky Airlines, Aegean Airlines, and Hahn Air Systems fly nonstop between Kos Island (KGS) and Athens (ATH), roughly 47 times a week. With this many departures on a short sector, premium cabins are small and turn over daily, so upgrade or award space opens and closes within hours. 2LNR tracks award seats on Aegean Airlines across every KGS to ATH date, so you can see whether a seat exists before you move points.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

See KGS to ATH on the interactive map Get started free
47
Nonstop flights a week
189 mi
Nonstop distance
Free
To get started

Kos Island to Athens flight schedule

Scheduled nonstop departures for KGS to ATH, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Kos Island (KGS) to Athens (ATH)
Date Flight Airline Departs KGS Arrives ATH Duration Aircraft
GQ 221Big Sky Airlines08:3509:351hATR
H1 251Hahn Air Systems08:3509:351hATR
A3 223Aegean Airlines09:1510:251h 10mAT7
A3 225Aegean Airlines13:0514:151h 10mAT7
H1 255Hahn Air Systems16:3017:301hATR
A3 227Aegean Airlines18:1019:0555 minutes320
H1 257Hahn Air Systems22:2523:251hATR
GQ 221Big Sky Airlines08:3509:351hATR
H1 251Hahn Air Systems08:3509:351hATR
A3 223Aegean Airlines09:2010:301h 10mAT7
A3 225Aegean Airlines13:0514:151h 10mAT7
H1 255Hahn Air Systems16:3017:301hATR
A3 227Aegean Airlines18:1019:0555 minutes320
H1 257Hahn Air Systems22:2523:251hATR
GQ 221Big Sky Airlines08:3509:351hATR
H1 251Hahn Air Systems08:3509:351hATR
A3 223Aegean Airlines09:2010:301h 10mAT7
A3 225Aegean Airlines13:0514:151h 10mAT7
H1 255Hahn Air Systems16:3017:301hATR
A3 227Aegean Airlines18:1019:0555 minutes320
GQ 225Big Sky Airlines22:4523:451hATR
GQ 221Big Sky Airlines08:3509:351hATR
H1 251Hahn Air Systems08:3509:351hATR
A3 225Aegean Airlines13:0514:151h 10mAT7
H1 255Hahn Air Systems16:3017:301hATR
A3 227Aegean Airlines18:1019:0555 minutes32N
H1 257Hahn Air Systems22:2523:251hATR
GQ 221Big Sky Airlines08:3509:351hATR
H1 251Hahn Air Systems08:3509:351hATR
A3 223Aegean Airlines09:2010:301h 10mAT7
A3 225Aegean Airlines13:0514:151h 10mAT7
H1 255Hahn Air Systems16:3017:301hATR
A3 227Aegean Airlines18:1019:0555 minutes320
GQ 225Big Sky Airlines22:4023:401hATR
H1 257Hahn Air Systems22:4023:401hATR
GQ 221Big Sky Airlines08:3509:351hATR
H1 251Hahn Air Systems08:3509:351hATR
A3 225Aegean Airlines13:0514:151h 10mAT7
GQ 223Big Sky Airlines17:1018:101hATR
H1 255Hahn Air Systems17:1018:101hATR

Showing the first 40 of 51 scheduled KGS to ATH departures across the next 7 days with service. Every remaining date is on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every KGS to ATH date on the interactive map

Award seats on KGS to ATH departures

2LNR tracks award seats on Aegean Airlines, date by date. Open the calendar for Kos Island to Athens to see whether a seat exists before you move points, the next 14 days free on every product and the full horizon on Pro.

See real availability

Confirmed upgrade and award seats on each KGS to ATH departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See KGS to ATH on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Kos Island to Athens nonstop

Carriers operating KGS to ATH nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

See KGS to ATH on the interactive map →

Frequently asked questions about KGS to ATH

How far is Athens from Kos Island?
KGS to ATH covers about 189 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.
Which airlines fly nonstop from KGS to ATH?
Big Sky Airlines, Aegean Airlines, and Hahn Air Systems fly the route nonstop. 2LNR tracks award seats on Aegean Airlines.
How many flights a week are there from KGS to ATH?
About 47 nonstop flights a week run between Kos Island and Athens in the current schedule, operated by Big Sky Airlines, Aegean Airlines, and Hahn Air Systems. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from KGS to ATH depart?
Scheduled KGS to ATH nonstops in the next 7 days with service leave between 08:35 and 22:45, local time at Kos Island. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
How do I check upgrade or award availability on KGS to ATH?
Open the KGS to ATH route on the interactive map or the matrix to see award seats by date on Aegean Airlines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens.

Never miss KGS to ATH upgrade or award space

See what is open by date on this route, the next 14 days free on every product and the full horizon on Pro.

Get started free