Nonstop flights from Seattle to Chicago

5 airlines fly from Seattle (SEA) to 2 Chicago airports (ORD and MDW), with up to 23 flights a day.

SEAORD

Routes

2 airport pairs

When they leave

Seattle time

12:17a11:56pFirst departure 12:17 AM, last 11:56 PM

One overnight flight at 12:17 AM, then 15 in the morning, 5:15 AM to 11:29 AM, then four in the afternoon, 1:10 PM to 3:35 PM, then seven in the evening, 5:13 PM to 11:56 PM.

Every flight

Earliest first

12:17 AM→6:20 AMSEA to ORDAlaska AirlinesBoeing 737Daily
5:15 AM→11:15 AMSEA to MDWSouthwest AirlinesBoeing 737 MAX 8Mon, Thu, Fri
5:20 AM→11:15 AMSEA to MDWSouthwest AirlinesBoeing 737 MAX 8Tue, Wed
5:40 AM→11:35 AMSEA to MDWSouthwest AirlinesBoeing 737 MAX 8Sat, Sun
5:50 AM→12:07 PMSEA to ORDAmerican AirlinesAirbus A321Daily
6:00 AM→12:03 PMSEA to ORDAlaska AirlinesBoeing 737Daily
7:00 AM→1:15 PMSEA to ORDUnited AirlinesAirbus A321neoDaily
7:15 AM→1:23 PMSEA to ORDDelta Air LinesBoeing 737Daily
8:34 AM→2:46 PMSEA to ORDAlaska AirlinesBoeing 737 MAX 8Daily
10:19 AM→4:46 PMSEA to ORDAmerican AirlinesBoeing 737Daily
10:20 AM→4:30 PMSEA to MDWSouthwest AirlinesBoeing 737 MAX 8Sun
10:29 AM→4:44 PMSEA to ORDAlaska AirlinesBoeing 737Daily
10:45 AM→4:50 PMSEA to MDWSouthwest AirlinesBoeing 737Tue, Wed
10:50 AM→5:00 PMSEA to ORDDelta Air LinesBoeing 737Daily
10:50 AM→4:55 PMSEA to MDWSouthwest AirlinesBoeing 737Mon, Thu, Fri
10:52 AM→5:05 PMSEA to ORDUnited AirlinesAirbus A321neoDaily
11:29 AM→5:38 PMSEA to ORDAlaska AirlinesBoeing 737Mon, Thu, Fri, Sun
1:10 PM→7:21 PMSEA to ORDAlaska AirlinesBoeing 737Daily
1:24 PM→7:59 PMSEA to ORDAmerican AirlinesAirbus A321Daily
1:55 PM→8:21 PMSEA to ORDUnited AirlinesBoeing 737Daily
3:35 PM→10:07 PMSEA to ORDAmerican AirlinesAirbus A321Daily
5:13 PM→11:17 PMSEA to ORDUnited AirlinesBoeing 737Tue
5:15 PM→11:22 PMSEA to ORDUnited AirlinesBoeing 737 MAX 9Mon, Wed, Thu, Fri, Sat, Sun
5:35 PM→11:29 PMSEA to ORDDelta Air LinesBoeing 737Daily
5:48 PM→11:59 PMSEA to ORDAlaska AirlinesBoeing 737Daily
11:05 PM→5:05 AM⁺¹SEA to MDWSouthwest AirlinesBoeing 737Daily
11:11 PM→5:18 AM⁺¹SEA to ORDUnited AirlinesBoeing 737Daily
11:56 PM→6:05 AM⁺¹SEA to ORDAmerican AirlinesAirbus A321Daily

Schedules last checked Sep 21, 2026. Times are local.

Flying from Seattle to Chicago

Alaska Airlines flies most often, 6 to 7 times a day on the Boeing 737 and Boeing 737 MAX 8. American Airlines flies 5 times a day on the Airbus A321 and Boeing 737. United Airlines flies 5 times a day on the Boeing 737, Airbus A321neo and Boeing 737 MAX 9. Delta Air Lines flies 3 times a day on the Boeing 737. Southwest Airlines flies 2 to 3 times a day on the Boeing 737 MAX 8 and Boeing 737.

Flights run every day of the week, from 21 on Saturdays to 23 on Mondays, Thursdays, Fridays and Sundays. The first arrival in Chicago is at 6:20 AM and the last at 6:05 AM the next day.

SEA to ORD is the busiest airport pair, with 137 flights a week, then SEA to MDW with 20.

Flying back, Chicago to Seattle has 87 nonstop flights a week.

Return flights

Chicago to SeattleView

Find the cheapest day to fly from Seattle to Chicago.

Schedules as of Oct 9, 2026.