Nonstop flights from Chicago to Seattle

5 airlines fly from 2 Chicago airports (ORD and MDW) to Seattle (SEA), with up to 15 flights a day.

ORDSEA

Routes

2 airport pairs

When they leave

Chicago time

1:55a9:20pFirst departure 1:55 AM, last 9:20 PM

One overnight flight at 1:55 AM, then seven in the morning, 6:00 AM to 10:45 AM, then five in the afternoon, 12:47 PM to 4:20 PM, then four in the evening, 5:44 PM to 9:20 PM.

Every flight

Earliest first

1:55 AM→4:15 AMORD to SEAKorean AirBoeing 747-8Fri
6:00 AM→8:34 AMORD to SEAAlaska AirlinesBoeing 737-900Tue, Wed, Thu, Fri, Sat, Sun
7:12 AM→9:47 AMORD to SEADelta Air LinesBoeing 737-800Daily
7:40 AM→10:21 AMORD to SEAAlaska AirlinesBoeing 737-900Wed, Thu, Fri, Sat, Sun
8:45 AM→11:38 AMORD to SEAUnited AirlinesAirbus A321neoMon, Tue, Wed, Thu, Fri, Sat
10:00 AM→12:36 PMORD to SEAAlaska AirlinesBoeing 737 MAX 9Mon, Tue, Thu, Fri, Sat, Sun
10:25 AM→12:55 PMMDW to SEASouthwest AirlinesBoeing 737 MAX 8Sun
10:45 AM→1:15 PMMDW to SEASouthwest AirlinesBoeing 737 MAX 8Mon, Tue, Wed, Thu, Fri, Sat
12:47 PM→3:20 PMORD to SEADelta Air LinesBoeing 737-800Tue, Wed, Thu, Fri, Sat
1:30 PM→4:09 PMORD to SEAUnited AirlinesBoeing 737 MAX 9Tue, Wed, Thu, Fri, Sat
3:28 PM→6:06 PMORD to SEAAlaska AirlinesBoeing 737 MAX 9Mon, Tue, Wed, Thu, Fri, Sat
3:55 PM→6:20 PMMDW to SEASouthwest AirlinesBoeing 737 MAX 8Mon, Tue, Wed, Thu, Fri, Sun
4:20 PM→7:05 PMORD to SEAUnited AirlinesAirbus A321neoTue, Wed, Thu, Fri, Sat
5:44 PM→8:22 PMORD to SEAAlaska AirlinesBoeing 737 MAX 9Mon, Tue, Fri, Sat, Sun
6:20 PM→8:50 PMORD to SEADelta Air LinesBoeing 737-900Daily
7:49 PM→10:30 PMORD to SEAAlaska AirlinesBoeing 737-800Wed, Thu, Sat
9:20 PM→11:55 PMMDW to SEASouthwest AirlinesBoeing 737 MAX 8Daily

Schedules last checked Sep 20, 2026. Times are local.

Flying from Chicago to Seattle

Alaska Airlines flies most often, 3 to 6 times a day on the Boeing 737 MAX 9, Boeing 737-900 and Boeing 737-800. Southwest Airlines flies 2 to 3 times a day on the Boeing 737 MAX 8. Delta Air Lines flies 2 to 3 times a day on the Boeing 737-800 and Boeing 737-900. United Airlines flies 16 times a week on the Airbus A321neo and Boeing 737 MAX 9. Korean Air flies on Fridays with the Boeing 747-8.

Flights run every day of the week, from 9 on Mondays and Sundays to 15 on Fridays. The first arrival in Seattle is at 4:15 AM and the last at 11:55 PM.

ORD to SEA is the busiest airport pair, with 67 flights a week, then MDW to SEA with 20.

Flying back, Seattle to Chicago has 157 nonstop flights a week.

Return flights

Seattle to ChicagoView

Find the cheapest day to fly from Chicago to Seattle.

Schedules as of Oct 9, 2026.