Cologne (CGN)Athens (ATH)
- non-stop flights:
- 7 per week
- flight duration:
- at least
- Sun
- Mon
- Tue
- Wed
- Thu
- Fri
- Sat
from $165number of non-stop flights per airline and day of the week Sun Mon Tue Wed Thu Fri Sat 
1 1 1 1 0 0 1 
0 1 0 0 0 0 0 
0 0 0 0 0 1 0 Cologne (CGN)Heraklion (HER)
- non-stop flights:
- 1–5 per day
- flight duration:
- at least
- Sun
- Mon
- Tue
- Wed
- Thu
- Fri
- Sat
from $225number of non-stop flights per airline and day of the week Sun Mon Tue Wed Thu Fri Sat 
1–2 1–2 1 1 1–3 1–2 1 
1 0 1 1 1–2 1 1 Cologne (CGN)Thessaloniki (SKG)
- non-stop flights:
- 5 per week
- flight duration:
- at least
- Sun
- Mon
- Tue
- Wed
- Thu
- Fri
- Sat
from $58number of non-stop flights per airline and day of the week Sun Mon Tue Wed Thu Fri Sat 
1 1 0 1 0 1 1