Colorado Springs to Seattle (COS–SEA) — Airlines, Schedules & Connections
No flights match your filters.
No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.
Most recently operated nonstop flights — the month shown is when each was last scheduled. Most destinations remain reachable with a connection.
No discontinued nonstop flights on record for this route.
COS–SEA had nonstop service from Delta Air Lines, SkyWest Airlines and United Airlines, last on the schedule in August 2026. There's no nonstop on it right now, so today you'd fly it with one stop. The connecting options below are sorted by layover. Nonstop, it's about 1,066 miles in 2h 36m.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| DL Delta Air Lines | 0 | – | – | SkyTeam | – | |
| OO SkyWest Airlines | 0 | – | – | – | – | |
| UA United Airlines | 0 | – | – | Star Alliance | – |
Connection Landscape
On-Time Performance
Other ways to reach Seattle from Colorado Springs
| Metric | COS→SEA | DEN→SEA | ASE→SEA |
|---|---|---|---|
| Distance from COS | – | 73 mi | 120 mi |
| Nonstop airlines | – | 22 | 2 |
| Weekly flights | – | 390 | – |
| Flight time | 2h 36m | 2h 21m | 2h 13m |
| Departure OTP | 100% | – | – |
Travel Essentials
COS: MDT · SEA: PDT
When it's 6:00 PM in Colorado Springs, it's 5:00 PM in Seattle.
Link Light Rail from the airport station (inside the terminal) to downtown Seattle takes 38 minutes ($3.50). No transfers needed; trains run 5am to 1am daily.Taxis and ride-shares to downtown cost $35–55. For Bellevue and Eastside destinations (across Lake Washington), ride-share is faster than Link. Car rentals are in the consolidated rental facility; take the free shuttle from baggage claim. Sound Transit buses serve Tacoma, Renton, and Federal Way.
Marine west coast climate. Winters are mild but persistently grey and rainy (3–9°C). Snow is rare at sea level but can occur December through February, causing significant disruptions when it does. The airport sits between Seattle and Tacoma in an area that receives more fog and low cloud than downtown Seattle.
Summers are famously pleasant (18–25°C) with low humidity and mostly clear skies, one of the best flying climates in the US from June through September. The wettest months are November through January.
COS–SEA Quick Facts
Frequently Asked Questions
Flights from COS to SEA
City of Colorado Springs Municipal Airport (COS) and Seattle–Tacoma International Airport (SEA) had nonstop service from Delta Air Lines, SkyWest Airlines and United Airlines, last on the schedule in August 2026. The nonstop is dormant right now, so the way to fly it today is one connection, and the options above are sorted by layover.
COS to SEA Flight Duration and Schedule
Nonstop flight time from COS to SEA is about 2 hours 36 minutes gate to gate. The route covers a distance of 1,066 miles (1,716 km).
Connecting Options and Alternatives
1-stop connecting options are also available, commonly via Denver, Salt Lake City and Harry Reid. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Denver (DEN), Aspen (ASE) and Eagle (EGE).