Domestic route
Cheap flights from Chicago to Seattle
O'Hare International Airport (ORD) to Seattle-Tacoma International Airport (SEA). 1,716 miles, 4h 10m nonstop.
ORD to SEA at a glance
Computed from airline schedules and the fares we track for this route. Refreshed several times a day.
- Distance
- 1,716 milesgreat-circle
- Typical flight time
- 4h 10mnonstop, gate to gate
- Nonstop airlines
- AADLUAWN8 airlinesAmerican, Delta, United
- Nonstop flights per day
- 30all airlines combined
- Cheapest month
- January 2027over the next six months
- Best day to fly
- Wednesday21% less than Friday
- Time difference
- 2h behindSeattle vs Chicago
Chicago to Seattle
Round trips from $137
Per traveler, taxes and fees included. Lowest fare we found departs Wed, Jan 13.
Cheapest month: January 2027
See fares on these datesLock any fare free — pay only when you accept your last-minute deal
Or ask an agent on WhatsAppChicago to Seattle fares by month
Lowest round-trip economy fare per traveler in each of the next six months, taxes and fees included. Select a month to search that date.
Airlines flying Chicago to Seattle
8 airlines fly nonstop with 30 departures a day combined, plus 2 more with one stop.
- DLDelta Air LinesSkyTeamNonstop · 7 flights a day · first checked bag from $35
- ASAlaska AirlinesoneworldNonstop · 5 flights a day · first checked bag from $35
- AAAmerican AirlinesoneworldNonstop · 5 flights a day · first checked bag from $40
- UAUnited AirlinesStar AllianceNonstop · 5 flights a day · first checked bag from $40
- MXBreeze AirwaysLow-costNonstop · 2 flights a day · first checked bag from $45
- WNSouthwest AirlinesLow-costNonstop · 2 flights a day · first checked bag from $35
- NKSpirit AirlinesLow-costNonstop · 2 flights a day · first checked bag from $55
- SYSun Country AirlinesLow-costNonstop · 2 flights a day · first checked bag from $45
- F9Frontier AirlinesLow-costConnecting via DEN, LAS, PHX, CLE · first checked bag from $55
- B6JetBlueConnecting via LAX · first checked bag from $40
Connecting options
Hubs where one airline can carry you on both legs, most choices first.
- Los Angeles (LAX)B61 airline
- Denver (DEN)F91 airline
- Las Vegas (LAS)F91 airline
- Phoenix (PHX)F91 airline
- Cleveland (CLE)F91 airline
Which airport should I use?
Chicago has 2 airports. Fares can differ by $50 to $150 round trip between them, so check the alternatives before you book.
Other departure airports near Chicago
Tips for this route
- American, Delta, United and Southwest all fly ORD to SEA nonstop, so compare the total with bags before picking the lowest base fare: the difference between a basic and a standard economy ticket is often less than one checked bag each way.
- January 2027 is the cheapest month to fly over the next six months, with round trips from $137; September 2026 is the most expensive at $172 and up, a difference of $35 per traveler.
- Departing on a Wednesday averages 21% less than a Friday on this route. If your dates are flexible, shift the outbound by a day or two and check the calendar view before you book.
- Fares on this route are usually lowest 4 to 8 weeks before departure and rise sharply inside two weeks.
- Seattle is 2 hours behind Chicago. A morning departure lands in Seattle with most of the day left; an evening flight arrives close to local dinner time.
Destination guide
Seattle: Coffee, mountains and Puget Sound
Seattle is the Pacific Northwest's gateway: Pike Place Market, the Space Needle and ferries across Puget Sound, with Mount Rainier and the Olympic Peninsula a couple of hours away. Sea-Tac is a Delta and Alaska hub with light rail downtown.
Best time to visit: July–September is dry, sunny and gorgeous — and the most expensive. May–June and late September are good compromises. October–April is gray and drizzly but cheap.
Flying the other way? Seattle to ChicagoFares, airlines and tips for SEA to ORD.Ready to compare live fares?
See every airline on ORD–SEA side by side with bags and seat rules spelled out.
Search Chicago to SeattleChicago to Seattle: common questions
How long is the flight from Chicago to Seattle?
A nonstop flight from Chicago (ORD) to Seattle (SEA) takes about 4h 10m gate to gate, covering 1,716 miles. Connecting itineraries add the layover, typically 1 to 3 hours more in total.
Which airlines fly nonstop from ORD to SEA?
American Airlines, Delta Air Lines, United Airlines, Southwest Airlines, Alaska Airlines, Spirit Airlines, Sun Country Airlines and Breeze Airways operate nonstop flights from Chicago (ORD) to Seattle (SEA), with 30 nonstop departures a day between them. One-stop options connect through LAX, DEN and LAS.
What is the cheapest month to fly from Chicago to Seattle?
Over the next six months, January 2027 has the lowest round-trip fares from Chicago (ORD) to Seattle (SEA), starting at $137 per traveler including taxes and fees. Within any month, Wednesday departures average the lowest prices.
How far in advance should I book Chicago to Seattle flights?
Fares on this route are usually lowest 4 to 8 weeks before departure and rise sharply inside two weeks. Air1 Tickets includes free cancellation within 24 hours of booking on every fare, so you can lock in a good price and keep looking.
What is the time difference between Chicago and Seattle?
Seattle is 2 hours behind Chicago. ORD is on America/Chicago time and SEA on America/Los Angeles time. Departure and arrival times in search results are always shown in local time at each airport.
Related routes
Other popular city pairs from the same departure city and to the same destination, with the lowest round-trip fares we found.