Alaska AirlinesAS
Flights AS334 09:23 daily · AS727 16:03 daily · AS464 23:43 daily
live
Direct flights from Seattle (SEA) to Atlanta (ATL): 14 nonstop departures observed each week across 2 airlines. 86% of the last 14 operated flights arrived within 15 minutes of schedule. The median arrival is 6 minutes late. 1 of the 14 tracked flights was cancelled. The nonstop covers 3,505 km, an estimated 5 hours 0 minutes in the air. Measured by Pro Flight Search from live flight boards at Seattle and Atlanta. Updated 21 September 2026 at 14:22 UTC.
SEA
Seattle
smooth · +0
ATL
Atlanta
smooth · +0
3,505 km · ~5h 00m est.
Runs reliable · 2 airlines · 14x weekly · nonstop
86% on time
of the last 14 operated SEA → ATL flights arrived within 15 minutes
Median arrival delay is +6 min. 1 of 14 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+6 minacross the last 14 operated legs
Flight time~5h 00mestimated from route distance
Weekly departures14x2 direct airlines on the leg
Cancelled7.1%recent route rate · 1 of 14
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Alaska AirlinesDelta Air Lines
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysHistory
operated legs · board outcomes09-20DL9960cancelledCNX
Actual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsWeather lens
Current conditions put the pressure at SEA: 34% odds of a 15+ minute delay and around +3 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →
next sweep in 120s
How the Seattle to Atlanta route actually runs
Pro Flight Search records official board updates for nonstop SEA to ATL flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search — Seattle (SEA) to Atlanta (ATL) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/SEA-ATL
SEA to ATL questions
Is SEA–ATL running on time right now?
Smooth skies ahead. Both endpoints currently score the same, route health score 100/100. The airports section above carries the live status and delay window at both ends.
Morning or evening flight on SEA–ATL?
Operators schedule morning departures around 06:00 and evening departures around 22:59 from SEA. Earlier flights typically land before destination-airport delays accumulate later in the day; check the ATL delay card to confirm conditions when you'd arrive.
How long is the flight from SEA to ATL?
Great-circle distance is 3,505 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 277–330 min gate-to-gate on this route.
How often does SEA–ATL fly?
2 carriers operate this route, around 72 flights a week between them. Compare carrier days and times in the airline list above.
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