$273 Economy Roundtrip to Seattle (BOS-SEA) in Sep from Boston

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$273 Economy Roundtrip to Seattle (BOS-SEA) in Sep from Boston

Best Flights starting from $273

from$273economy

Boston (BOS)

Tue, Sep 22

Roundtrip

Seattle (SEA)

Tue, Sep 29

Fields updated — click View Prices to search ↑

Other Options for This Route

SEA destination

Economy Roundtrip to Seattle (SEA)

Boston (BOS) to Seattle (SEA) in October from $207

SEA destination

Business Roundtrip to Seattle (SEA)

Boston (BOS) to Seattle (SEA) in October from $1,027

SEA destination

Economy Roundtrip to Seattle (SEA)

Boston (BOS) to Seattle (SEA) in March from $247

SEA destination

Economy One-way to Seattle (SEA)

Boston (BOS) to Seattle (SEA) in May from $144

SEA destination

Economy Roundtrip to Seattle (SEA)

Boston (BOS) to Seattle (SEA) in May from $362

SEA destination

Economy One-way to Seattle (SEA)

Boston (BOS) to Seattle (SEA) in June from $169

Other Destinations

MCO destination

Economy One-way to Orlando (MCO)

Boston (BOS) to Orlando (MCO) in September from $60

RDU destination

Economy One-way to Durham (RDU)

Boston (BOS) to Durham (RDU) in September from $88

MCO destination

Economy Roundtrip to Orlando (MCO)

Boston (BOS) to Orlando (MCO) in September from $98

JAX destination

Economy One-way to Jacksonville (JAX)

Boston (BOS) to Jacksonville (JAX) in September from $104

EWR destination

Economy Roundtrip to Newark (EWR)

Boston (BOS) to Newark (EWR) in September from $117

JFK destination

Economy Roundtrip to New York (JFK)

Boston (BOS) to New York (JFK) in September from $117

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)

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

SEA destination

Economy Roundtrip to Seattle (SEA)

Las Vegas (LAS) to Seattle (SEA) in September from $118

SEA destination

Economy Roundtrip to Seattle (SEA)

Los Angeles (LAX) to Seattle (SEA) in September from $128

SEA destination

Economy Roundtrip to Seattle (SEA)

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

SEA destination

Economy Roundtrip to Seattle (SEA)

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

Cheap economy Class Flights from Boston (BOS) 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: BOS to SEA in September - Route 1

Starting from $273

Flight Options & Prices:

Direct Flights: From $295 - Fastest option with no layovers
One-Stop Flights: From $273 - Good value with one connection
Multi-Stop Flights: From $273 - Cheapest option with multiple connections

Book your economy class flight from Boston (BOS) 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 Boston (BOS) 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 Boston (BOS) 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.