Raleigh-Durham (RDU)Denver (DEN)
- non-stop flights:
- 8–13 per day
- flight duration:
- at least
direct flight availability- Sun
- Mon
- Tue
- Wed
- Thu
- Fri
- Sat
airlinesfrom $335number of non-stop flights per airline and day of the week Sun Mon Tue Wed Thu Fri Sat 
8–12 7–12 7–11 8–12 8–12 8–12 8–12 
1 1 1 1 1 1 1 Casper (CPR)Denver (DEN)
- non-stop flights:
- 6–8 per day
- flight duration:
- at least
direct flight availability- Sun
- Mon
- Tue
- Wed
- Thu
- Fri
- Sat
airlinesfrom $218number of non-stop flights per airline and day of the week Sun Mon Tue Wed Thu Fri Sat 
6–8 6–8 6–8 6–8 6–8 6–8 6–8 Louisville (SDF)Denver (DEN)
- non-stop flights:
- 4–12 per day
- flight duration:
- at least
direct flight availability- Sun
- Mon
- Tue
- Wed
- Thu
- Fri
- Sat
airlinesfrom $511number of non-stop flights per airline and day of the week Sun Mon Tue Wed Thu Fri Sat 
4–12 4–12 4–12 4–12 4–12 4–12 4–12 Champaign (CMI)Denver (DEN)
- non-stop flights:
- only flights with stopover
- flight duration:
- at least
direct flight availability- Sun
- Mon
- Tue
- Wed
- Thu
- Fri
- Sat
airlinesfrom $528
