Seattle to Chicago (SEA–ORD) — Airlines, Schedules & Connections
Flight Schedule
127 flights
Verified 46m ago
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No nonstop flights on this route. connecting options below.
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Seattle to Chicago
4 carriers, 449 flights/week nonstop.
4 Airlines
449 Flights/wk
1,716 mi
3h 57m nonstop
+2h ahead
126 1-stop hubs
SEA–ORD is served by 4 airlines with nonstop service. American Airlines, United Airlines and Alaska Airlines lead the route. The flight covers 1,716 miles in approximately 3h 57m. Beyond nonstop, 126 hubs offer 1-stop connections.
Carriers on this route
Airline Landscape
All carriers operating nonstop SEA–ORD service, compared side by side.
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| AA American Airlines Also: AY, BA, EI, GF, IB, MH, QR, RJ | 68 | 321, 738, 7M8 | 4h01-4h34 | Oneworld | AY, BA, EI, GF, IB, MH, QR, RJ | |
| UA United Airlines Also: AV, LH, LX, OS, SN | 66 | 320, 32Q, 738, 739, 7M9, A21N | 3h58-4h26 | Star Alliance | AV, LH, LX, OS, SN | |
| AS Alaska Airlines Also: AY, HA, IB, KE, QR | 49 | 73J, B39M | 4h08-4h26 | Oneworld | AY, HA, IB, KE, QR | |
| DL Delta Air Lines Also: AF, KE, SK | 21 | 223, 738, BCS3 | 3h59-4h08 | SkyTeam | AF, KE, SK |
Aircraft on this route
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.
Schedule
Weekly Schedule Pattern
Nonstop flight frequency by day of week, SEA to ORD direction.
Mon
66
flights
Tue
63
flights
Wed
64
flights
Thu
65
flights
Fri
64
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Sat
62
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Sun
65
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Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
69
Nonstop flights
449
Outbound / wk
367
Return / wk
Connections
Connection Landscape
Beyond nonstop. 1-stop and 2-stop options for SEA to ORD.
1-STOP
One-Stop Connections
126
Hubs
~5h
Fastest
~51h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
5,693
Candidates
Two-stop connections loaded in the connections tab above.
Connections computed from published schedules with minimum connection time verification. Use the interactive explorer above the fold to filter by airline, tier, and layover time.
Alternatives
Other ways to reach Chicago from Seattle
Nearby airports with service to Chicago O'Hare International Airport.
| Metric | SEA→ORD | BFI→ORD | PAE→ORD |
|---|---|---|---|
| Distance from SEA | – | 5 mi | 32 mi |
| Nonstop airlines | 4 | 1 | 1 |
| Weekly flights | 449 | – | – |
| Flight time | 3h 57m | 4h 18m | 4h 11m |
| Departure OTP | 94% | – | – |
Airports within 200 miles of SEA with service to Chicago O'Hare International Airport.
Know before you go
Travel Essentials
Practical planning for this route.
Time Difference
+2h
Chicago is 2 hours
ahead of
Seattle.
SEA: PDT · ORD: CDT
When it's 6:00 PM in Seattle, it's 8:00 PM in Chicago.
SEA: PDT · ORD: CDT
When it's 6:00 PM in Seattle, it's 8:00 PM in Chicago.
Distance & Flight Time
1,716 mi / 2,762 km
Nonstop flight time is approximately 3h 57m to 4h 34m.
Getting to SEA
Link Light Rail runs from downtown Seattle (Westlake station) to the airport in 38 minutes ($3.50 peak). Trains run every 6–12 minutes during peak hours from 5am to 1am. Ride-shares run $30–50 from downtown; SR-99 and I-5 can be heavily congested southbound during afternoon rush (3–7pm).
Sound Transit 574 express bus serves Tacoma ($2.50–4). Sounder commuter rail connects Tacoma to the airport area via a shuttle.
Getting from ORD
CTA Blue Line runs 24/7 from O'Hare to downtown Chicago (45 min, $5). Taxis use a flat-rate zone system; downtown is around $40–45 plus tip. Ride-shares are typically $30–50.The Airport Transit System (ATS) connects all terminals and parking. Metra commuter rail does not serve O'Hare directly; transfer downtown via Blue Line.
Chicago Climate
Continental climate with four distinct seasons. Summers are warm and humid (25–32°C) with afternoon thunderstorms. Winters are cold (−10 to −2°C) with heavy snowfall that regularly delays flights December through March.
Spring and fall are mild but unpredictable. Pack layers. Lake Michigan moderates temperatures near the lakefront, but O'Hare sits inland and runs colder.
Facts
SEA–ORD Quick Facts
Key statistics for the Seattle to Chicago route.
Route details
Distance1,716 mi / 2,762 km
Flight time3h 57m to 4h 34m
Time difference+2 hours
Airlines (nonstop)4
Weekly flights449 out / 367 return
1-stop connections126 hubs
Origin: SEA
Full nameSeattle–Tacoma International Airport
IATA / ICAOSEA / KSEA
TimezoneAmerica/Los_Angeles
Passengers/yr52.6M
Elevation433 ft / 132 m
Destination: ORD
Full nameChicago O'Hare International Airport
IATA / ICAOORD / KORD
TimezoneAmerica/Chicago
Passengers/yr80.0M
Elevation680 ft / 207 m
FAQ
Frequently Asked Questions
Common questions about SEA to ORD flights.
Nonstop flights from Seattle–Tacoma International Airport to Chicago O'Hare International Airport take approximately 3h 57m to 4h 34m. The route covers 1,716 miles.
4 airlines operate nonstop service: American Airlines, Alaska Airlines, Delta Air Lines and United Airlines. Plus 17 codeshare partners.
There are approximately 449 nonstop flights per week from SEA to ORD. The return direction has about 367 weekly flights.
Yes, 1-stop connections are available through YLW, FTW, SGU, MKC, BFI, MDW, MHK, HDN, RFD, APA, SUN, SCF, EGE, MEM, ASE, PAE, VNY, SHV, MSN, GSO, TEB, GNV, YEG, JAC, MTY, MLB, BZE, SAT, IND, KOA, MKE, RNO, OMA, SJC, GDL, PDX, MSO, FAT, CMH, MCI, BIL, GEG, SMF, MSP, PIT, IDA, LUX, CLE, ELP, ONT, IAH, BNA, ABQ, YVR, DEN, MSY, DTW, AUS, DAL, BWI, STL, FCA, BOI, LAS, SLC, ATL, IAD, ANC, CLT, SFO, PHL, PHX, MCO, LAX, DFW, CVG, RDU, KEF, ICT, EWR, SAN, BOS, BZN, MEX, CHS, KIX, MIA, PSP, YYC, EUG, SNA, DCA, AMS, NRT, OKC, YYZ, TUS, TPA, TUL, JFK, SBA, FLL, RSW, LHR, MRY, CDG, FRA, FAI, CUN, SJD, PVR, LIR, HNL, OGG, IST, MUC, DUB, HND, SIN, FCO, ICN, TPE, PVG, DXB, DOH and HKG. These options provide additional schedule flexibility.
Chicago is 2 hours ahead of Seattle.
Yes, return flights from ORD to SEA are available. Use the direction toggle at the top to view the return schedule.
Click the 'Search Flights' button to check availability and prices on Google Flights. You can also compare airlines and schedules on this page to find the best option.
See the On-Time Performance section for the latest delay data at both airports. This shows departure and arrival reliability to help you plan.
Route data is updated regularly from official airline schedules. On-time performance data comes from recent airport delay snapshots.
Alaska Airlines runs 3 to 4 daily nonstops. United operates 3 to 4. American has 2 to 3. Delta adds 1 to 2. Total daily nonstops are around 9 to 13. Block time eastbound is about 4 hours and westbound about 4 hours 40 minutes. Alaska and United use 737 and A320 family equipment. American and Delta deploy A321 and 737-800.
United uses Terminal 1. American uses Terminal 3. Alaska uses Terminal 2 (the international terminal handles some domestic flights). Delta uses Terminal 2. At Seattle, all carriers operate from a single terminal building with concourses connected after security. O'Hare is more complex but all domestic terminals connect airside via the underground walkway between Terminals 1 and 2.
Yes. Alaska and United both run late-night departures from Seattle around 10:30 to 11:30 PM, arriving at O'Hare around 5:00 to 6:00 AM Central time. The 2-hour time zone gain eastbound makes this work well for business travelers. You leave after dinner Pacific time and arrive for a morning meeting in Chicago.
The Blue Line runs 24/7 from O'Hare to the Loop. Trip time is about 45 minutes. Fare is $5. The station is in Terminal 2, accessible from all terminals via the underground walkway. Rideshare pickup is at the upper level of each terminal. A taxi or rideshare to downtown takes 30 to 60 minutes depending on expressway traffic and costs $40 to $60.
Seattle to Chicago O'Hare: Cross-Country Business Route
SEA-ORD links the Pacific Northwest's economic engine to the Midwest's largest city. Alaska, United, American, and Delta combine for 9 to 13 daily nonstops. Block time is about 4 hours eastbound and 4 hours 40 minutes westbound. The route serves heavy corporate traffic: Seattle's tech companies and Boeing presence generate consistent business travel to Chicago's financial, consulting, and manufacturing sectors. Both airports function as major hubs for their respective home carriers, making this a route where connecting passengers mix with point-to-point travelers.
Hub-to-Hub Connectivity
Seattle is Alaska Airlines' primary hub. O'Hare is United's second-largest hub and American's third. This means SEA-ORD acts as a bridge between two large connecting complexes. A passenger originating in Boise or Anchorage can connect through SEA to ORD and onward to the eastern US or Europe via United or American. The reverse works for Midwest travelers heading to Alaska or the Pacific Northwest. Red-eye options exist on this route, with late departures from Seattle arriving at O'Hare in the early morning. The 2-hour time gain eastbound makes these flights practical for next-day meetings. O'Hare's Blue Line train provides 24/7 rail access to downtown Chicago for $5.