FFL Helper / St Louis / Seattle

STL → SEA

St Louis (STL) to Seattle (SEA)

Compare one-way fares for flights from St Louis to Seattle.

Lowest fare $122

Distance 1,720 mi

Flight time 7h 3m

Airports STL–SEA

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By month: November 2026 from $122

Price calendar

October 2026

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November 2026

From $122 · up to $255

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2 $255 3 $226 4 $225 5 $226 6 $174 7 $174 8 $174 9 $174 10 $174 11 $174 12 $174 13 $174 14 $174 15 $174 16 $174 17 $174 18 $174 19 $122

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Upcoming dates

Seattle SEA

$122

Nov 19, 10:56am · 7h 3m · 1 stop

STL → SEA · American Airlines

Tickets

About this route

This calendar shows dated one-way fares from St Louis to Seattle. Use it to see which days are cheaper before you search tickets.

Flight time and airport codes on this page are for the sample itinerary we have on file. Always confirm the live routing when you book St Louis to Seattle.