Find which airlines fly direct from Denver Intl to Buffalo, which days they fly and book direct flights.
Nonstop departures
Monday
Frontier, Southwest
Frontier, Southwest
Tuesday
Southwest
Southwest
Wednesday
Frontier, Southwest
Frontier, Southwest
Thursday
Southwest
Southwest
Friday
Frontier, Southwest
Frontier, Southwest
Saturday
Frontier, Southwest
Frontier, Southwest
Sunday
Southwest
Southwest
Nonstop returns
Monday
Frontier, Southwest
Frontier, Southwest
Tuesday
Southwest
Southwest
Wednesday
Frontier, Southwest
Frontier, Southwest
Thursday
Southwest
Southwest
Friday
Frontier, Southwest
Frontier, Southwest
Saturday
Frontier, Southwest
Frontier, Southwest
Sunday
Southwest
Southwest
Denver (DEN)United States
Buffalo (BUF)United States