Route · SEA → ORD
Flights from Seattle to Chicago
Seattle–Chicago O'Hare is a well-established transcontinental corridor spanning roughly 2,760 km with a typical block time of three hours and forty minutes, placing it firmly in the category of long domestic hops. The route is dominated by United Airlines and Alaska Airlines, each operating multiple daily departures with narrowbody jets such as the Boeing 737 family, while American Airlines adds further frequency and occasionally deploys larger equipment during peak periods — the remaining carriers on the tracked list likely serve the pairing as codeshare partners rather than metal operators. Practically speaking, Chicago O'Hare is a large connecting hub, so arriving passengers should budget at least ninety minutes for any onward domestic connection given the distance between terminals. Seattle sits two hours behind Chicago on Pacific time, meaning an early-morning departure from SEA can land with a full working day ahead of you in the Midwest. Fares tend to soften in January and February, while summer and the holiday shoulder weeks around Thanksgiving push prices noticeably higher.
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Cheapest dates to fly
Live prices · powered by AviasalesThe calendar below pulls live fares from our search partner for Seattle (SEA) → Chicago (ORD). Use the year view… to spot the cheapest week to fly, the day-of-week patterns most travellers miss, and any shoulder-season dips worth shifting your trip around. Prices refresh every few hours, so what you see is what your booking page should look like a moment later — click any date to jump straight to the fare on Aviasales.
Airlines on this route
7 carriersThe 7 carriers we currently track on the Seattle–Chicago route, from full-service flag carriers to low-cost competitors. Tap any airline for its full profile, baggage… rules, fleet context, and a live fare search pre-filtered to that carrier — useful if you're loyal to a frequent-flyer programme, want to compare onboard product on the same dates, or are weighing a cheaper one-stop against a pricier nonstop.
Flights from Seattle to Chicago
Live schedule · powered by AviasalesBelow is the published weekly schedule for nonstop and one-stop services from Seattle to Chicago — the actual flight numbers, departure and arrival times your… booking page will pull from. Use it to plan around departure preferences (early morning vs late evening), see which carriers fly on which weekdays, or pick a connection that lets you sleep in your own bed before a long-haul leg. Click any row to load it directly in the search.
Airport guides
Quick links into the airport profiles at both ends of the route. Each guide covers terminal layout, the airlines that base hubs at SEA and… ORD, the other routes those airports serve, and the ground-transit options most travellers wish they'd read about before landing — the practical context you only really need to know once you've booked, but want to skim before you do.