Alaska Airlines Flights from Saint Louis to Seattle
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1 Passenger
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Lowest fares from Saint Louis to Seattle
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One-way low-fare flights Saint Louis to Seattle.*
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From | To | Fare Type | Dates | Price | |
---|---|---|---|---|---|
Saint Louis (STL) | Seattle (SEA) | One-way | Saver | Depart: Jan 23, 2026 | From $71 Seen: 15 hours ago | |
Saint Louis (STL) | Seattle (SEA) | One-way | Saver | Depart: Oct 31, 2025 | From $119 Seen: 5 hours ago | |
Saint Louis (STL) | Seattle (SEA) | One-way | Saver | Depart: Aug 31, 2025 | From $119 Seen: 5 hours ago | |
Saint Louis (STL) | Seattle (SEA) | One-way | Saver | Depart: Oct 15, 2025 | From $125 Seen: 5 hours ago | |
Saint Louis (STL) | Seattle (SEA) | One-way | Saver | Depart: Oct 20, 2025 | From $125 Seen: 5 hours ago | |
Saint Louis (STL) | Seattle (SEA) | One-way | Saver | Depart: Oct 23, 2025 | From $125 Seen: 5 hours ago | |
Saint Louis (STL) | Seattle (SEA) | One-way | Saver | Depart: Oct 24, 2025 | From $125 Seen: 5 hours ago | |
Saint Louis (STL) | Seattle (SEA) | One-way | Saver | Depart: Oct 27, 2025 | From $125 Seen: 5 hours ago |
*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.
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