Cheap Flights from Seattle to Chicago | EazAir
Seattle to Chicago flight insights
Average flight time
~4h 15m (estimated)
SEA → ORD
Cheapest month
—
Based on cached fare history
Cheapest cached price
$98
Checking live fares…
Prices shown may not be current. Last checked: Sep 5, 2026.
Planning a trip from Seattle to Chicago? The average flight time on this route is ~4h 15m (estimated). The lowest fare we have cached for this route is $98 (last checked Sep 5, 2026).
Seattle to Chicago covers a straight-line distance of about 1,716 miles. Based on that distance, a nonstop flight would take approximately ~4h 15m (estimated). Actual flight time varies by airline, aircraft and routing.
Route Quick Facts
| Origin | Seattle (SEA) |
|---|---|
| Destination | Chicago (ORD) |
| Average Flight Time | — |
| Cheapest Month to Fly | — |
| Current Lowest Fare | $98 |
| Fares Last Checked | Sep 5, 2026 |
Flight deals from Seattle to Chicago
Direct flights from Seattle-Tacoma International Airport (SEA) to Chicago O'Hare (ORD) or Chicago Midway (MDW) typically take about four hours and five minutes. Passengers cover approximately 1,735 miles crossing the Rocky Mountains and the Great Plains before descending into the Midwest. Morning departures from Washington State often arrive in Illinois by mid-afternoon due to the two-hour time zone change. Several carriers operate regular nonstop service connecting Seattle to Chicago. Alaska Airlines and United Airlines frequently fly directly into O'Hare, serving high volumes of daily passengers on this transcontinental corridor. Travelers preferring Midway can book direct routes on Southwest Airlines, which maintains a major presence at both SEA and MDW. Summer represents the peak travel season for the Seattle to Chicago route, with July and August seeing the highest passenger volumes heading toward Lake Michigan. Business travel spikes again during October, while January and February offer the lowest airfares for those willing to endure the Illinois winter. Booking your ticket at least three to four weeks ahead of your departure date generally secures the lowest rates on this specific Pacific Northwest to Midwest connection.
About Chicago
Popular areas to know in Chicago include Wicker Park, The Loop, and Lincoln Park.
Summers are warm and humid, winters are cold with lake-effect snow off Lake Michigan — spring and fall bring the mildest sightseeing weather.
Frequently asked questions
How long does a direct flight from Seattle to Chicago take?
Which airlines fly nonstop from Seattle to Chicago?
What is the best month to find cheap flights from Seattle to Chicago?
How far in advance should I book my ticket from Seattle to Chicago?
Are there flights from Seattle to Chicago Midway instead of O'Hare?
What is the time difference when traveling from Seattle to Chicago?
Can I take a red-eye flight from Seattle to Chicago?
What is the flight distance between Seattle and Chicago?
What are the primary departure and arrival airports for the Seattle to Chicago route?
Do early morning flights from Seattle to Chicago experience fewer delays?
How much checked baggage allowance do airlines include for economy tickets from Seattle to Chicago?
How far is it from Seattle to Chicago?
What ID do I need to fly from Seattle to Chicago?
Which airlines operate flights from Seattle to Chicago?
What's the weather usually like in Chicago?
Airline baggage policies
Baggage allowances differ significantly between fare classes (Basic/Light vs. Standard/Flex) and can change over time. Always verify the exact allowance for your specific fare with the airline before you fly.
| Airline | Cabin bag | Checked bag |
|---|---|---|
| Delta Air Lines | 1 carry-on + 1 personal item on most fares | 1 checked bag typically included on Main Cabin and above; Basic Economy usually excludes it |
| American Airlines | 1 carry-on + 1 personal item on most fares | 1 checked bag typically included on Main Cabin and above; Basic Economy usually excludes it |
| United Airlines | 1 carry-on + 1 personal item on most fares | 1 checked bag typically included on Economy and above; Basic Economy usually excludes it |
| Southwest Airlines | 1 carry-on + 1 personal item | 2 checked bags included on every fare — a long-standing, well-known Southwest policy |
| JetBlue Airways | 1 personal item on the cheapest (Blue Basic) fare; a carry-on is added on higher fares | Not included on Blue Basic; typically included from Blue Plus and above |
| Alaska Airlines | 1 carry-on + 1 personal item on most fares | 1 checked bag typically included on Main and above; Saver fares usually exclude it |
| Spirit Airlines | 1 personal item included; a full-sized carry-on is a paid add-on | Not included on the base fare — a paid add-on at every fare tier |
| Frontier Airlines | 1 personal item included; a full-sized carry-on is a paid add-on | Not included on the base fare — a paid add-on at every fare tier |
Travel tips
Arrive early for domestic flights
TSA generally recommends arriving at least 2 hours before a domestic departure, more at larger hub airports during peak travel periods.
Pack a mixed carry-on
Keep a change of clothes, chargers, and any essentials in your carry-on rather than only your checked bag, in case of a delay or a bag that doesn't arrive with you.
Ease jet lag on longer routes
On longer cross-country flights, adjusting your sleep schedule a day or two before departure and staying hydrated in flight can reduce jet lag on arrival.
Screenshot your confirmation
Save a screenshot or PDF of your booking confirmation and boarding pass before you travel, in case you lose signal or battery at the airport.
Check in online when it opens
Most airlines open online check-in 24 hours before departure — checking in early can help with seat selection and, on some airlines, boarding group assignment.
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