Cheapest return flights from Chicago to Seattle in August from $91

AirHint found the following cheapest return flights from Chicago (ORD) to Seattle (SEA) in August 2025 (see full year).

Return flights

19 Aug - 02 Sep Alaska Airlines direct
12 Aug - 26 Aug Alaska Airlines direct
19 Aug - 26 Aug Alaska Airlines direct
06 Aug - 12 Aug United direct
13 Aug - 19 Aug American Airlines direct
13 Aug - 20 Aug American Airlines direct
27 Aug - 03 Sep United direct
26 Aug - 09 Sep United direct
27 Aug - 02 Sep American Airlines direct
26 Aug - 02 Sep American Airlines direct
26 Aug - 03 Sep American Airlines direct
18 Aug - 20 Aug American Airlines direct
23 Aug - 26 Aug United direct
14 Aug - 19 Aug United direct
16 Aug - 20 Aug United direct
26 Aug - 15 Sep United direct
23 Aug - 02 Sep American Airlines direct
25 Aug - 03 Sep American Airlines direct
25 Aug - 02 Sep American Airlines direct
13 Aug - 15 Aug Alaska Airlines direct

Also check the deals for one-way flights from Chicago to Seattle in August.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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