Kansas City (MCI)Washington DC (IAD)
- non-stop flights:
- 3–7 per day
- flight duration:
- at least
- Sun
- Mon
- Tue
- Wed
- Thu
- Fri
- Sat
from $319number of non-stop flights per airline and day of the week Sun Mon Tue Wed Thu Fri Sat 
3–7 3–7 3–7 3–7 3–7 3–7 3–7 Portland-Oregon (PDX)Washington DC (IAD)
- non-stop flights:
- 1–7 per day
- flight duration:
- at least
- Sun
- Mon
- Tue
- Wed
- Thu
- Fri
- Sat
from $718number of non-stop flights per airline and day of the week Sun Mon Tue Wed Thu Fri Sat 
2–6 2–6 2–6 1–7 1–6 2–7 2–6 Raleigh-Durham (RDU)Washington DC (IAD)
- non-stop flights:
- 6–12 per day
- flight duration:
- at least
- Sun
- Mon
- Tue
- Wed
- Thu
- Fri
- Sat
from $150number of non-stop flights per airline and day of the week Sun Mon Tue Wed Thu Fri Sat 
6–12 6–10 6–10 6–10 6–10 7–11 6–10