Delhi (DEL)Kathmandu (KTM)
- non-stop flights:
 - 13–16 per day
 - flight duration:
 - at least
 
- Sun
 - Mon
 - Tue
 - Wed
 - Thu
 - Fri
 - Sat
 
from $141number of non-stop flights per airline and day of the week Sun Mon Tue Wed Thu Fri Sat 
6–9 6–9 6–9 6–9 6–9 6–9 6–9 
3 3 3 3 3 3 3 
1 1 1 1 1 1 1 
1 1 1 1 1 1 1 
1 1 1 1 1 1 1 
1 1 1 1 1 1 1 Kathmandu (KTM)Delhi (DEL)
- non-stop flights:
 - 14–16 per day
 - flight duration:
 - at least
 
- Sun
 - Mon
 - Tue
 - Wed
 - Thu
 - Fri
 - Sat
 
from $175number of non-stop flights per airline and day of the week Sun Mon Tue Wed Thu Fri Sat 
7–9 7–9 7–9 7–9 7–9 7–9 7–9 
3 3 3 3 3 3 3 
1 1 1 1 1 1 1 
1 1 1 1 1 1 1 
1 1 1 1 1 1 1 
1 1 1 1 1 1 1 Bangkok (BKK)Calcutta (CCU)
- non-stop flights:
 - 4–8 per day
 - flight duration:
 - at least
 
- Sun
 - Mon
 - Tue
 - Wed
 - Thu
 - Fri
 - Sat
 
from $129number of non-stop flights per airline and day of the week Sun Mon Tue Wed Thu Fri Sat 
1 1–2 1–2 1 1–2 1 1–2 
1 1 1 1 1 1–2 1–2 
1 1 1 1 1 1 1 
1 1 1 1 1 1 1 
1 0 1 0 1 0 1 
1 0 1 0 1 0 1 Calcutta (CCU)Bangkok (BKK)
- non-stop flights:
 - 5–8 per day
 - flight duration:
 - at least
 
- Sun
 - Mon
 - Tue
 - Wed
 - Thu
 - Fri
 - Sat
 
from $208number of non-stop flights per airline and day of the week Sun Mon Tue Wed Thu Fri Sat 
1–2 2–3 1–2 1–2 1–2 1–2 1–2 
1–2 1 1–2 1 1 1–2 1–2 
1 1 1 1 1 1 1 
1 1 1 1 1 1 1 
1 1 1 1 1 1 1 
1 1 0 1 0 1 0