14 destinations have scheduled flights from COS, about 168 departures a week. Weekly frequencies come from airline schedules and observed departures, not live status.
| Destination | Flights per week | Airlines | Typical duration |
|---|---|---|---|
| Denver International Airport (DEN) | 56 | Albatross Airlines, Southwest Airlines Co., Delta Air Lines | — |
| Chicago O'Hare International Airport (ORD) | 20 | SkyWest Airlines, Albatross Airlines | — |
| Phoenix Sky Harbor International Airport (PHX) | 18 | Southwest Airlines Co. | — |
| Harry Reid International Airport (LAS) | 15 | Southwest Airlines Co. | — |
| Dallas Fort Worth International Airport (DFW) | 13 | American Airlines | — |
| George Bush Intercontinental Airport (IAH) | 10 | Mesa Airlines, Inc., Albatross Airlines | — |
| Dallas Love Field (DAL) | 9 | Southwest Airlines Co. | — |
| Hartsfield Jackson Atlanta International Airport (ATL) | 7 | Delta Air Lines | — |
| Salt Lake City International Airport (SLC) | 6 | Delta Air Lines | — |
| Frederick W. Smith International Airport (MEM) | 5 | Four Island Air | — |
| San Diego International Airport (SAN) | 3 | Southwest Airlines Co. | — |
| Mesa Gateway Airport (AZA) | 2 | Allegiant Air LLC | — |
| Pueblo Memorial Airport (PUB) | 2 | Aero Continente | — |
| John Wayne Orange County International Airport (SNA) | 2 | Allegiant Air LLC | — |
GET /routes returns each scheduled flight from COS: airline, flight number, departure and arrival time, duration, days of operation and aircraft type.
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