Cheap flights from Chicago to Seattle

One-way fares from $132 · CHI → SEA · prices found by travellers in the last 48 hours

Compare all dates Seattle → Chicago
Cheapest fare
$132

Alaska Airlines · Fri, Nov 6

Cheapest month
November

from $132

Direct flights
Yes

Alaska Airlines and American Airlines

Flight time
4h 49m

2,790 km

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Cheapest month to fly from Chicago to Seattle

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 Cheapest $132
  2. December 2026 $161

Cheapest dates in November 2026

The lowest fares we've seen for each day, cheapest first.

Alaska Airlines
Depart15:59 Fri, Nov 6ORD → SEA 4h 49m · Direct
$132one way, per person
View deal
Alaska Airlines
Depart07:00 Thu, Nov 12ORD → SEA 4h 50m · Direct
$136one way, per person
View deal
Alaska Airlines
Depart18:35 Wed, Nov 11ORD → SEA 4h 54m · Direct
$168one way, per person
View deal
Frontier Airlines
Depart06:30 Mon, Nov 16ORD → SEA 6h 04m · 1 stop
$199one way, per person
View deal
Alaska Airlines
Depart18:35 Tue, Nov 10ORD → SEA 4h 54m · Direct
$236one way, per person
View deal
Alaska Airlines
Depart18:35 Sat, Nov 14ORD → SEA 4h 54m · Direct
$237one way, per person
View deal
See every date in November 2026 →

Plan the rest of your trip to Seattle

Where to stay, what to do and getting around, from our travel partners.

Where to stay

Hotels in SeattleCompare places to stay on Booking.com Find hotels →

Things to do

Things to do in SeattleTours, attractions and day trips on Klook Explore →

Getting around

Airport transfer in SeattlePre-book a driver to meet you at arrivals, with Kiwitaxi Book a transfer → Car hire in SeattleCompare rental cars from major brands on EconomyBookings Compare cars →

About flights from Chicago to Seattle

Chicago (CHI) and Seattle (SEA) are about 2,790 km apart. Direct flights take around 4h 49m, and recent direct fares were with Alaska Airlines and American Airlines. Over the next few months, one-way fares start from $132, and November 2026 is currently the cheapest month to fly.

These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.

Frequently asked questions

How much is a flight from Chicago to Seattle?

The cheapest one-way fare we've seen recently is $132 with Alaska Airlines, departing Friday, November 6, 2026. Over the coming months, the lowest fare in each month ranges from $132 to $161.

What is the cheapest month to fly from Chicago to Seattle?

November 2026 currently has the lowest fares, from $132 one way.

Are there direct flights from Chicago to Seattle?

Yes. Recent direct fares were with Alaska Airlines and American Airlines.

How long is the flight from Chicago to Seattle?

A direct flight takes about 4h 49m. Chicago and Seattle are around 2,790 km apart.

Which airlines fly from Chicago to Seattle?

Recent fares on this route were with Alaska Airlines, American Airlines and Frontier Airlines.

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