Seattle skyline and Space Needle at sunset with Mount Rainier in the distance

Cheap Flights from Chicago (ORD) to Seattle (SEA)

  • About 1,716 miles
  • About 3.9 hours
  • Best months: Jun, Jul, Sep
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Planning a trip from Chicago to Seattle? This 1,716-mile hop between ORD and SEA takes about 3.9 hours, and Delta and United are among the carriers we see on it. Fares start around $413 in recent searches.

Tips for finding a lower fare

  • Aim for Jun, Jul and Sep when demand to Seattle is softer.
  • Book carry-on only if you can. Basic fares from Delta often add bag fees.
  • Look at one-way fares on United and Delta separately; mixing airlines can beat a round trip.

Airlines on this route

Delta, United, American, Alaska

Things to see in Seattle

  • Discovery Park
  • Pike Place Market
  • Space Needle

Frequently asked questions

When is the cheapest time to fly from Chicago to Seattle?

Fares on ORD to SEA are often lower in Jun, Jul and Sep. Prices move with demand, so compare a few dates on the partner site before you decide.

How long is the flight from ORD to SEA?

A nonstop flight takes about 3.9 hours. Itineraries with a connection take longer, depending on the layover.

Which airlines fly from Chicago to Seattle?

Carriers we commonly see on this route include Delta, United, American and Alaska. Schedules and availability change, so check current options when you search.

How far ahead should I book ORD to SEA?

For most domestic trips, booking about 1 to 3 months ahead gives a good balance of price and choice. Holiday travel is better booked earlier.

Is the price I see here the final price?

No. Fares shown on this page are indicative and change often. The final price, taxes and fees are shown on the partner site at booking.

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