Chicago to Seattle (ORD–SEA) — Airlines, Schedules & Connections
Flight Schedule
127 flights
Verified 17m ago
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No flights match your filters.
No nonstop flights on this route. connecting options below.
✦ 1-Stop
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Chicago to Seattle
7 carriers, 367 flights/week nonstop.
7 Airlines
367 Flights/wk
1,716 mi
3h 29m nonstop
-2h behind
129 1-stop hubs
ORD–SEA is served by 7 airlines with nonstop service. American Airlines, United Airlines and Alaska Airlines lead the route. The flight covers 1,716 miles in approximately 3h 29m. Beyond nonstop, 129 hubs offer 1-stop connections.
Carriers on this route
Airline Landscape
All carriers operating nonstop ORD–SEA service, compared side by side.
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| AA American Airlines Also: AY, EI, GF, MH, QR, RJ | 68 | 321, 738, 7M8 | 4h21-4h44 | Oneworld | AY, EI, GF, MH, QR, RJ | |
| UA United Airlines Also: LX, OS, SN | 54 | 320, 32Q, 7M8, 7M9, A21N | 4h38-4h44 | Star Alliance | LX, OS, SN | |
| AS Alaska Airlines Also: AY, HA, KE, QR | 50 | 739, 73H, 73J, B39M | 4h32-4h41 | Oneworld | AY, HA, KE, QR | |
| DL Delta Air Lines Also: AF, KE | 21 | 223, 738, BCS3 | 4h34-4h49 | SkyTeam | AF, KE | |
| IB Iberia | 21 | 321, 738 | 4h38-4h42 | Oneworld | – | |
| CI China Airlines | 2 | 77X | 4h30 | SkyTeam | – | |
| BR EVA Air | 0 | – | – | Star Alliance | – |
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, ORD to SEA direction.
Mon
52
flights
Tue
53
flights
Wed
53
flights
Thu
52
flights
Fri
54
flights
Sat
50
flights
Sun
53
flights
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
58
Nonstop flights
367
Outbound / wk
449
Return / wk
Connections
Connection Landscape
Beyond nonstop. 1-stop and 2-stop options for ORD to SEA.
1-STOP
One-Stop Connections
129
Hubs
~5h
Fastest
~43h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
5,812
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 Seattle from Chicago
Nearby airports with service to Seattle–Tacoma International Airport.
| Metric | ORD→SEA | MDW→SEA | RFD→SEA |
|---|---|---|---|
| Distance from ORD | – | 15 mi | 63 mi |
| Nonstop airlines | 7 | 1 | 1 |
| Weekly flights | 367 | 14 | 2 |
| Flight time | 3h 29m | 4h 14m | 3h 33m |
| Departure OTP | 76% | – | – |
Chicago (MDW) to Seattle flights · Chicago/Rockford (RFD) to Seattle flights · Milwaukee (MKE) to Seattle flights
Airports within 200 miles of ORD with service to Seattle–Tacoma International Airport.
Know before you go
Travel Essentials
Practical planning for this route.
Time Difference
-2h
Seattle is 2 hours
behind
Chicago.
ORD: CDT · SEA: PDT
When it's 6:00 PM in Chicago, it's 4:00 PM in Seattle.
ORD: CDT · SEA: PDT
When it's 6:00 PM in Chicago, it's 4:00 PM in Seattle.
Distance & Flight Time
1,716 mi / 2,762 km
Nonstop flight time is approximately 3h 29m to 4h 50m.
Getting to ORD
CTA Blue Line runs 24/7 from downtown Loop stations to O'Hare (45 min, $5). Pace buses serve suburbs. Ride-shares cost $35–55 from downtown depending on traffic; add 30+ minutes during rush hour on the Kennedy Expressway.Economy parking lots E/F connect via ATS people mover. Terminal 5 (international) is separate from Terminals 1–3; allow extra time for inter-terminal transfers.
Getting from SEA
Link Light Rail from the airport station (inside the terminal) to downtown Seattle takes 38 minutes ($3.50). No transfers needed; trains run 5am to 1am daily.Taxis and ride-shares to downtown cost $35–55. For Bellevue and Eastside destinations (across Lake Washington), ride-share is faster than Link. Car rentals are in the consolidated rental facility; take the free shuttle from baggage claim. Sound Transit buses serve Tacoma, Renton, and Federal Way.
Seattle Climate
Marine west coast climate. Winters are mild but persistently grey and rainy (3–9°C). Snow is rare at sea level but can occur December through February, causing significant disruptions when it does. The airport sits between Seattle and Tacoma in an area that receives more fog and low cloud than downtown Seattle.
Summers are famously pleasant (18–25°C) with low humidity and mostly clear skies, one of the best flying climates in the US from June through September. The wettest months are November through January.
Facts
ORD–SEA Quick Facts
Key statistics for the Chicago to Seattle route.
Route details
Distance1,716 mi / 2,762 km
Flight time3h 29m to 4h 50m
Time difference-2 hours
Airlines (nonstop)7
Weekly flights367 out / 449 return
1-stop connections129 hubs
Origin: ORD
Full nameChicago O'Hare International Airport
IATA / ICAOORD / KORD
TimezoneAmerica/Chicago
Passengers/yr80.0M
Elevation680 ft / 207 m
Destination: SEA
Full nameSeattle–Tacoma International Airport
IATA / ICAOSEA / KSEA
TimezoneAmerica/Los_Angeles
Passengers/yr52.6M
Elevation433 ft / 132 m
FAQ
Frequently Asked Questions
Common questions about ORD to SEA flights.
Nonstop flights from Chicago O'Hare International Airport to Seattle–Tacoma International Airport take approximately 3h 29m to 4h 50m. The route covers 1,716 miles.
7 airlines operate nonstop service: American Airlines, Alaska Airlines, EVA Air, China Airlines, Delta Air Lines, Iberia and United Airlines. Plus 12 codeshare partners.
There are approximately 367 nonstop flights per week from ORD to SEA. The return direction has about 449 weekly flights.
Yes, 1-stop connections are available through FXE, ASE, FAR, PAE, VNY, COS, BFI, RFD, MHK, HOU, GTF, HDN, SBD, SUN, TEB, MEM, EGE, AFW, STS, MTY, BUR, RSW, MDW, BZE, SJD, SJO, MRY, PVR, CUN, SBA, YYZ, CHS, SNN, KOA, LUX, PIK, CVG, BIL, ATL, MSO, CMH, OMA, STL, ABQ, CLE, LGG, MKE, DAL, IND, MSP, YYC, PIT, FCA, BWI, FAI, DFW, MCI, MEX, SJC, DEN, YVR, JFK, PDX, BNA, GEG, SMF, PSP, SLC, FAT, IAH, ONT, MSJ, BOI, PHL, SAT, TUS, RDU, LAX, RNO, AUS, LAS, BZN, DTW, IAD, PHX, ICT, SFO, MIA, SAN, IDA, EWR, MSY, TUL, TPA, GDL, OGG, JAC, DUB, SNA, CLT, FRA, ANC, DCA, MCO, BOS, OKC, AMS, KEF, HNL, EUG, LHR, FLL, GSO, NRT, MUC, FCO, ELP, YEG, CDG, PEK, ICN, IST, LIR, TPE, PVG, HND, DXB, HKG and DOH. These options provide additional schedule flexibility.
Seattle is 2 hours behind Chicago.
Yes, return flights from SEA to ORD 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.
United Airlines operates 5 to 7 daily nonstops from its ORD hub. Alaska Airlines runs 3 to 4 daily departures. American Airlines adds 2 to 3 daily nonstops. Delta operates 1 to 2 daily frequencies. The 1,721-mile sector takes 4 hours 20 minutes to 4 hours 40 minutes westbound. Eastbound flights are 30 to 40 minutes shorter due to jet stream tailwinds. United and American fly 737 and A321 equipment. Alaska uses 737-900ER and 737 MAX 9.
United departs from Terminal 1 at ORD. American uses Terminal 3. Alaska Airlines flies from Terminal 3 as well. Delta uses Terminal 2. All terminals are connected airside via the underground tunnel between Terminal 1 and Terminal 2/3. If arriving internationally in Terminal 5, you must re-clear security. Allow 60 to 90 minutes for T5-to-domestic connections.
Link Light Rail runs from SEA to Westlake Station in downtown Seattle. The ride takes 38 to 40 minutes and costs $3.00. Trains depart every 8 to 10 minutes during peak hours. The station is accessible from the airport's parking garage via a skybridge on the 4th floor. Rideshare pickups are on the 3rd floor of the parking garage. A taxi to downtown runs $45 to $55.
Yes. Alaska Airlines and United both offer late-night departures from SEA arriving at ORD early the following morning. Typical departure is around 23:00 to 00:30 from Seattle, arriving at O'Hare between 05:30 and 07:00 Central Time. The eastbound flight is only about 4 hours, so actual sleep time is limited. These red-eyes are popular with business travelers who want a full day in Seattle and an early morning arrival in Chicago.
Chicago O'Hare to Seattle: Cross-Country Hub Connector
ORD-SEA links two of the country's most important airline hubs across 1,721 miles. United, Alaska, American, and Delta combine for 11 to 16 daily nonstops. Westbound block time is 4 hours 20 to 40 minutes. Eastbound runs closer to 3 hours 50 minutes with the jet stream. United and Alaska carry the bulk of traffic. This route serves a dual purpose: point-to-point travel between Chicago and the Pacific Northwest, and connecting flows through both hubs. United feeds international traffic from ORD, while Alaska connects passengers onward to Portland, Anchorage, and smaller Pacific Northwest cities from SEA.
Passenger Mix and Seasonal Patterns
ORD-SEA carries steady year-round business traffic driven by tech, consulting, and manufacturing ties between the two metros. Amazon, Microsoft, and Boeing in the Seattle area generate consistent corporate travel. Summer is the leisure peak, with passengers headed to the San Juan Islands, Olympic Peninsula, and Pacific Northwest road trips. Winter demand dips slightly but ski traffic to destinations reachable via SEA (Crystal Mountain, Stevens Pass) fills some of the gap. SEA-Tacoma Airport is in a major expansion phase with a new international arrivals facility. O'Hare continues its Terminal Area Plan renovation, which has modernized the Terminal 5 international facility.