$279 Economy Roundtrip to Seattle (STL-SEA) in Sep from St Louis

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$279 Economy Roundtrip to Seattle (STL-SEA) in Sep from St Louis

Best Flights starting from $279

from$279economy

St Louis (STL)

Fri, Sep 25

Roundtrip

Seattle (SEA)

Sat, Oct 3

Fields updated — click View Prices to search ↑

Other Options for This Route

SEA destination

Economy One-way to Seattle (SEA)

St Louis (STL) to Seattle (SEA) in May from $106

SEA destination

Economy Roundtrip to Seattle (SEA)

St Louis (STL) to Seattle (SEA) in May from $203

SEA destination

Economy Roundtrip to Seattle (SEA)

St Louis (STL) to Seattle (SEA) in June from $230

SEA destination

Economy Roundtrip to Seattle (SEA)

St Louis (STL) to Seattle (SEA) in July from $226

SEA destination

Economy Roundtrip to Seattle (SEA)

St Louis (STL) to Seattle (SEA) in August from $254

Other Destinations

SACA destination

Economy One-way to Sacramento (Any)

St Louis (STL) to Sacramento (Any) in September from $131

BUF destination

Economy One-way to Buffalo (BUF)

St Louis (STL) to Buffalo (BUF) in September from $135

ABQ destination

Economy One-way to Albuquerque (ABQ)

St Louis (STL) to Albuquerque (ABQ) in September from $183

SEAA destination

Economy One-way to Seattle (Any)

St Louis (STL) to Seattle (Any) in September from $189

YYC destination

Economy One-way to Calgary (YYC)

St Louis (STL) to Calgary (YYC) in September from $196

EWR destination

Economy Roundtrip to Newark (EWR)

St Louis (STL) to Newark (EWR) in September from $201

Flights from Other Cities

SEA destination

Economy One-way to Seattle (SEA)

Denver (DEN) to Seattle (SEA) in September from $118

SEA destination

Economy Roundtrip to Seattle (SEA)

Colorado Springs (COS) to Seattle (SEA) in September from $149

SEA destination

Economy Roundtrip to Seattle (SEA)

Los Angeles (LAX) to Seattle (SEA) in September from $154

SEA destination

Economy Roundtrip to Seattle (SEA)

Fort Myers (RSW) to Seattle (SEA) in September from $159

SEA destination

Economy Roundtrip to Seattle (SEA)

San Diego (SAN) to Seattle (SEA) in September from $183

SEA destination

Economy Roundtrip to Seattle (SEA)

Boise (BOI) to Seattle (SEA) in September from $197

Cheap economy Class Flights from St Louis (STL) to Seattle (SEA) September

Find the best deals on economy class flights. Compare prices for direct flights, one-stop, and multi-stop options.

Cheap economy Flights: STL to SEA in September - Route 1

Starting from $279

Flight Options & Prices:

Direct Flights: From $397 - Fastest option with no layovers
One-Stop Flights: From $279 - Good value with one connection
Multi-Stop Flights: From $279 - Cheapest option with multiple connections

Book your economy class flight from St Louis (STL) to Seattle (SEA)and save money on your travel. Compare all flight options to find the best deal for your september trip.

Why Choose Economy Class Flights from St Louis (STL) to Seattle (SEA)?

Compare prices from multiple airlines
Find direct flights and multi-stop options
Best deals for september travel
Flexible booking options
24/7 customer support

Planning a trip from St Louis (STL) to Seattle (SEA) in september? SlickTrip helps you find the cheapest economy class flights with our comprehensive flight comparison tool. Whether you prefer direct flights for convenience or multi-stop flights for savings, we have options for every budget and schedule.