London Heathrow (LHR)Cologne (CGN)
- non-stop flights:
- 2–6 per day
- flight duration:
- at least
- Sun
- Mon
- Tue
- Wed
- Thu
- Fri
- Sat
from $201number of non-stop flights per airline and day of the week Sun Mon Tue Wed Thu Fri Sat 
3–4 3–4 2–4 2–4 2–4 1–2 2–3 
2 2 1–2 1–2 2 1–2 2 London (LON)Cologne (CGN)
- non-stop flights:
- 4–12 per day
- flight duration:
- at least
- Sun
- Mon
- Tue
- Wed
- Thu
- Fri
- Sat
from $201number of non-stop flights per airline and day of the week Sun Mon Tue Wed Thu Fri Sat 
2–4 3–4 2–3 3–4 3–4 2–5 3–4 
3–4 3–4 2–4 2–4 2–4 1–2 2–3 
2 2 1–2 1–2 2 1–2 2 
1 0 0 0 1–2 0 1