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Alaska Airlines / AS421
Flight

AS421 SEA → DEN → SEA

AS421 is a same-day return operated by Alaska Airlines, flying from Seattle–Tacoma International Airport (SEA) in Seattle out to Denver (DEN) and back. Live status, scheduled and actual times, gate and terminal for AS421 are available via the API.

SEAOrigin
DENVia
SEAReturns to
3,290 kmTotal distance
4h 14mDuration
2Legs
AS421 · SEA → DEN → SEA

AS421 schedule & status

Live and scheduled times for AS421 are available through the FlightNerve API.

FieldSEA departureSEA arrival
Scheduled••:••, Mon DD••:••, Mon DD
Estimated / actual••:••••:••
Terminal · gateT• · ••T• · ••
StatusScheduled / En route / Landed

Live status, gate & on-time performance

Scheduled and actual times, terminal, gate, delays and live position for every flight here are available through the FlightNerve API, one call, one clean response.

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Route

Airports on the AS421 route.

SEA SeattleDEN DenverAlaska Airlines · all flights

Track AS421 in real time

Live status, position, schedule and aircraft for AS421, one API call.

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