ATL → SEAAtlanta to Seattle

live

Direct flights from Atlanta (ATL) to Seattle (SEA): 14 nonstop departures observed each week across 2 airlines. The median arrival is 9 minutes early. No cancellations were recorded across the 9 tracked flights. 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 Atlanta and Seattle. Updated 29 October 2026 at 02:39 UTC.

Today, ATL → SEA

Wed 28 Oct · local times
KE261Korean AirIn the air, 40 min late

Left ATL at 07:50, 40 min after its 07:10 slot.

  1. 07:03 AS377Alaska Left 07:14 +11 Landed 09:30
  2. 07:10 KE261Korean Air Left 07:50 +40 ·
  3. 07:25 DL444Delta Air Lines Left 07:32 +7 Landed 10:03
  4. 09:03 AS348Alaska Left 09:10 +7 Landed 11:28
  5. 13:45 DL481Delta Air Lines Left 14:34 +49 Landed 16:16
  6. 16:30 DL472Delta Air Lines Left 16:43 +13 Landed 19:04
  7. 16:35 AS218Alaska Left 16:45 +10 Landed 19:01
  8. 19:30 DL714Delta Air Lines Left 19:42 +12 SEA est. 21:54In the air · sched 22:03
  9. 21:15 DL903Delta Air Lines Left 21:19 SEA est. 23:26In the air · sched 23:52
  10. · DL629Delta Air Lines Departed Landed 14:19
  11. · DL774Delta Air Lines Departed Landed 12:22

Checked ATL board 22:39 · SEA board 19:22

ATL Atlanta smooth · +5
SEA Seattle disrupted · +60
3,505 km · ~5h 00m est.
dep bank 07:03–21:1514x weekly
Under pressure · 2 airlines · 14x weekly · nonstop
55 / 100

route health from live ATL and SEA delay boards

Median arrival delay is −9 min. 0 of 9 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−9 minacross the last 2 arrivals
Flight time~5h 00mestimated from route distance
Weekly departures14x2 direct airlines on the leg

The week

scheduled departures · origin local time
06121824
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 days
Alaska AirlinesAS

Flights AS377 07:03 daily · AS348 09:03 daily · AS218 16:35 daily

Delta Air LinesDL

Flights DL444 07:25 daily · DL774 09:45 daily · DL629 11:45 daily · DL481 13:45 daily

History

operated legs · board outcomes
10-28AS218departed+10
10-28AS348departed+7
10-28AS377departed+11
10-28DL444departed+7
10-28DL472departed+13
10-28DL481departed+49
10-28DL714dep +12 → arr−9
10-28DL903dep +4 → arr−26
10-28KE261departed+40

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
ATLAtlanta +5 min smooth 🌤 few clouds · ENE 9 kt Full ATL delay board →
SEASeattle +60 min disrupted 🌤 scattered clouds · SE 9 kt Full SEA delay board →

Weather lens

Current conditions put the pressure at SEA: 31% odds of a 15+ minute delay and around +1 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the Atlanta to Seattle route actually runs

Pro Flight Search records official board updates for nonstop ATL to SEA 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 — Atlanta (ATL) to Seattle (SEA) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/ATL-SEA
How we measure this →

ATL to SEA questions

Is ATL–SEA running on time right now?

Some delays possible. The arrival side at SEA is the weaker end, route health score 55/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on ATL–SEA?

Operators schedule morning departures around 07:03 and evening departures around 19:30 from ATL. Earlier flights typically land before destination-airport delays accumulate later in the day; check the SEA delay card to confirm conditions when you'd arrive.

How long is the flight from ATL to SEA?

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 ATL–SEA fly?

2 carriers operate this route, around 70 flights a week between them. Compare carrier days and times in the airline list above.