MDW → SEAChicago to Seattle

live

Direct flights from Chicago (MDW) to Seattle (SEA): 6 nonstop departures observed each week across 1 airline. 40% of the last 5 operated flights arrived within 15 minutes of schedule. The median arrival is 21 minutes late. No cancellations were recorded across the 5 tracked flights. The nonstop covers 2,782 km, an estimated 4 hours 4 minutes in the air. Measured by Pro Flight Search from live flight boards at Chicago and Seattle. Updated 10 October 2026 at 08:22 UTC.

MDW Chicago heavy · +53
SEA Seattle smooth · +0
2,782 km · ~4h 04m est.
dep bank 10:15–22:056x weekly
Runs rough · 1 airline · 6x weekly · nonstop
40% on time

of the last 5 operated MDW → SEA flights arrived within 15 minutes

Median arrival delay is +21 min. 0 of 5 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival+21 minacross the last 5 operated legs
Flight time~4h 04mestimated from route distance
Weekly departures6x1 direct airline on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Southwest Airlines

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
Southwest AirlinesWN40% on time

Flights WN2979 10:15 Tu We · WN1987 11:25 Sa · WN447 13:30 Mo Th Fr · WN1186 19:05 Sa

History

operated legs · board outcomes
10-09WN647dep +78 → arr+53
10-08WN647departed+80
10-07WN2979departed+10
10-06WN2979departed+8
10-05WN647departed+21

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
MDWChicago +53 min heavy 🌤 few clouds · S 8 kt Full MDW delay board →
SEASeattle +0 min smooth ⛅ overcast · ESE 8 kt Full SEA delay board →

Weather lens

Current conditions put the pressure at MDW: 36% odds of a 15+ minute delay and around +10 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the Chicago to Seattle route actually runs

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

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

MDW to SEA questions

Is MDW–SEA running on time right now?

Some delays possible. The departure side at MDW is the weaker end, route health score 65/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on MDW–SEA?

Operators schedule morning departures around 10:15 and evening departures around 19:05 from MDW. 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 MDW to SEA?

Great-circle distance is 2,782 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 226–268 min gate-to-gate on this route.

How often does MDW–SEA fly?

Southwest Airlines runs the route with about 10 flights a week (mon, tue, wed, thu, fri, sat). Since one carrier owns the route, a single disruption tends to ripple through the day.