Seattle (SEA) to Chicago (ORD) flights: who flies it

Seattle to Chicago flight schedule

Scheduled nonstop departures for SEA to ORD starting October 23, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Scheduled nonstop departures from Seattle (SEA) to Chicago (ORD)
Date	Flight	Airline	Departs SEA	Arrives ORD	Duration	Aircraft
Fri, Oct 23	AA 1872	American Airlines	06:12	12:26	4h 14m	Airbus A321
Fri, Oct 23	UA 2618	United Airlines	07:00	13:15	4h 15m	Airbus A321neo family
Fri, Oct 23	DL 2055	Delta Air Lines	07:15	13:30	4h 15m	Boeing 737-800
Fri, Oct 23	AS 265	Alaska Airlines, Inc.	08:32	14:53	4h 21m	Boeing 737 MAX 9
Fri, Oct 23	AA 3234	American Airlines	10:31	16:55	4h 24m	Boeing 737-800
Fri, Oct 23	AS 429	Alaska Airlines, Inc.	10:33	16:50	4h 17m	Boeing 737 MAX 9
Fri, Oct 23	DL 637	Delta Air Lines	10:39	16:53	4h 14m	Airbus A220-300
Fri, Oct 23	UA 2835	United Airlines	10:42	17:00	4h 18m	Boeing 737 MAX 8
Fri, Oct 23	AS 579	Alaska Airlines, Inc.	11:56	18:20	4h 24m	Boeing 737-900
Fri, Oct 23	UA 2369	United Airlines	13:56	20:17	4h 21m	Boeing 737 MAX 9
Fri, Oct 23	AA 2966	American Airlines	14:12	20:43	4h 31m	Airbus A321
Fri, Oct 23	AA 1476	American Airlines	15:14	21:29	4h 15m	Airbus A321
Fri, Oct 23	UA 1265	United Airlines	17:07	23:10	4h 3m	Boeing 737-800
Fri, Oct 23	DL 2108	Delta Air Lines	17:30	23:34	4h 4m	Airbus A220-300
Fri, Oct 23	AA 2672	American Airlines	17:39	23:45	4h 6m	Airbus A321
Fri, Oct 23	AS 538	Alaska Airlines, Inc.	17:49	23:59	4h 10m	Boeing 737 MAX 9
Fri, Oct 23	UA 747	United Airlines	23:13	05:19	4h 6m	Boeing 737 MAX 8
Fri, Oct 23	AS 285	Alaska Airlines, Inc.	23:41	05:40	3h 59m	Boeing 737-900
Fri, Oct 23	AA 2379	American Airlines	23:59	06:05	4h 6m	Airbus A321
Sat, Oct 24	AA 1872	American Airlines	06:12	12:26	4h 14m	Airbus A321
Sat, Oct 24	UA 2618	United Airlines	07:00	13:15	4h 15m	Airbus A321neo family
Sat, Oct 24	DL 2055	Delta Air Lines	07:45	14:00	4h 15m	Boeing 737-800
Sat, Oct 24	AS 265	Alaska Airlines, Inc.	08:32	14:53	4h 21m	Boeing 737 MAX 9
Sat, Oct 24	DL 637	Delta Air Lines	10:39	16:53	4h 14m	Airbus A220-300
Sat, Oct 24	UA 2835	United Airlines	10:42	17:00	4h 18m	Boeing 737-900
Sat, Oct 24	AA 3234	American Airlines	11:17	17:29	4h 12m	Airbus A321
Sat, Oct 24	AS 579	Alaska Airlines, Inc.	11:56	18:20	4h 24m	Boeing 737-900
Sat, Oct 24	UA 2369	United Airlines	13:56	20:17	4h 21m	Boeing 737 MAX 9
Sat, Oct 24	AA 2966	American Airlines	14:12	20:43	4h 31m	Airbus A321
Sat, Oct 24	AA 1476	American Airlines	15:14	21:29	4h 15m	Airbus A321
Sat, Oct 24	UA 1265	United Airlines	17:07	23:10	4h 3m	Boeing 737-800
Sat, Oct 24	AA 2672	American Airlines	17:39	23:45	4h 6m	Airbus A321
Sat, Oct 24	DL 2108	Delta Air Lines	17:50	23:54	4h 4m	Airbus A220-300
Sat, Oct 24	UA 1547	United Airlines	23:13	05:19	4h 6m	Boeing 737-800
Sat, Oct 24	AS 285	Alaska Airlines, Inc.	23:41	05:40	3h 59m	Boeing 737-900
Sat, Oct 24	AA 2379	American Airlines	23:59	06:05	4h 6m	Airbus A321
Sun, Oct 25	AA 1872	American Airlines	06:12	12:26	4h 14m	Airbus A321
Sun, Oct 25	UA 2618	United Airlines	07:00	13:15	4h 15m	Airbus A321neo family
Sun, Oct 25	DL 2055	Delta Air Lines	07:15	13:30	4h 15m	Boeing 737-800
Sun, Oct 25	AS 265	Alaska Airlines, Inc.	08:32	14:53	4h 21m	Boeing 737-900

Showing the first 40 of 122 scheduled SEA to ORD departures across 7 days with service, starting October 23, 2026. Every remaining date is on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure.

See every SEA to ORD date on the interactive map

Aircraft on the Seattle to Chicago nonstop

In the schedule table on this page, American Airlines flies the Airbus A321 and the Boeing 737-800. United Airlines flies the Airbus A321neo family, the Boeing 737-800, the Boeing 737 MAX 8, the Boeing 737 MAX 9, and the Boeing 737-900. Alaska Airlines flies the Boeing 737-900 and the Boeing 737 MAX 9. Delta Air Lines flies the Airbus A220-300. The Aircraft column has the rest. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

Confirmed upgrade & award space on SEA to ORD departures

2LNR tracks confirmed upgrade and award space on Alaska Airlines, American Airlines, and Delta Air Lines, segment by segment and date by date. Open the calendar for Seattle to Chicago to see which departures have space, the next 14 days free on every product and the full horizon on Pro.

In the 7 days to October 19, 2026, 2LNR checked award space on Seattle to Chicago departures from October 19 to November 1. Alaska Airlines had space open on 9 of 14 dates checked, American Airlines on 11 of 14 and Delta Air Lines on 14 of 14.

See real availability

Confirmed upgrade or award seats by date on the SEA to ORD departures 2LNR tracks, checked against live inventory so you know what's open before you book.

Set an alert

Premium inventory turns over fast. Watch this route on Pro and 2LNR notifies you when space appears on a date you're tracking.

Plan on the map

See SEA to ORD on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Seattle to Chicago nonstop

Carriers operating SEA to ORD nonstop in the current schedule. Where 2LNR tracks the carrier, its departures show confirmed upgrade or award space by date.

See SEA to ORD on the interactive map →

Frequently asked questions about SEA to ORD

How long is the flight from Seattle (SEA) to Chicago (ORD)?

Scheduled flight times from Seattle (SEA) to Chicago (ORD) run from 3h 59m to 4h 31m across the departures in the schedule table on this page. The nonstop covers about 1,716 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.

Which airlines fly nonstop from SEA to ORD?

United Airlines, Alaska Airlines, American Airlines, and Delta Air Lines fly SEA to ORD nonstop. 2LNR tracks confirmed upgrade and award space on Alaska Airlines, American Airlines, and Delta Air Lines.

How many flights a week are there from SEA to ORD?

About 115 nonstop flights a week run between Seattle (SEA) and Chicago (ORD) in the current schedule, operated by United Airlines, Alaska Airlines, American Airlines, and Delta Air Lines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.

What time do flights from SEA to ORD depart?

Scheduled SEA to ORD nonstops in the next 7 days with service leave between 06:12 and 23:59, local time at Seattle. The schedule table on this page lists every departure by date, with its arrival time and aircraft.

Which flights operate SEA to ORD nonstop?

The schedule table on this page lists 20 flight numbers for SEA to ORD nonstops, including AA 1872 and AA 3234 on American Airlines; UA 2618 and UA 2835 on United Airlines; AS 265 and AS 579 on Alaska Airlines; and DL 637 and DL 2055 on Delta Air Lines. The table lists each departure by date with its times and aircraft.

How do I check upgrade or award availability on SEA to ORD?

Open the SEA to ORD route on the interactive map or the matrix to see confirmed upgrade and award space by date on Alaska Airlines, American Airlines, and Delta Air Lines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens.