Wander Wisely with exceptional service, 24/7 supportOpens in a new window
Feel at ease with free flight cancellations within 24 hours of booking
Change your flight without a fee on select flights
Find The Best Dates To Fly
Cheapest Flights from Boston (BOS) to Seattle (SEA)
The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were CA $283 round trip and CA $142 one way. Prices and availability subject to change. Additional terms may apply.
Thu., 23 Jan. - Wed., 29 Jan.
BOS
Boston
SEA
Seattle
CA $283 Roundtrip, found 1 day ago
CA $283
Roundtrip
found 1 day ago
Thu., 23 Jan. - Wed., 29 Jan.
BOS
Boston
SEA
Seattle
CA $283 Roundtrip, found 1 day ago
CA $283
Roundtrip
found 1 day ago
Thu., 23 Jan. - Wed., 29 Jan.
BOS
Boston
SEA
Seattle
CA $298 Roundtrip, found 1 day ago
CA $298
Roundtrip
found 1 day ago
Sun., 26 Jan. - Sun., 2 Feb.
BOS
Boston
SEA
Seattle
CA $307 Roundtrip, found 6 days ago
CA $307
Roundtrip
found 6 days ago
Sun., 26 Jan. - Sun., 2 Feb.
BOS
Boston
SEA
Seattle
CA $308 Roundtrip, found 6 days ago
CA $308
Roundtrip
found 6 days ago
Sun., 26 Jan. - Sun., 2 Feb.
BOS
Boston
SEA
Seattle
CA $308 Roundtrip, found 6 days ago
CA $308
Roundtrip
found 6 days ago
Fri., 10 Jan. - Thu., 16 Jan.
BOS
Boston
SEA
Seattle
CA $308 Roundtrip, found 5 days ago
CA $308
Roundtrip
found 5 days ago
Sun., 26 Jan. - Sun., 2 Feb.
BOS
Boston
SEA
Seattle
CA $309 Roundtrip, found 6 days ago
CA $309
Roundtrip
found 6 days ago
Fri., 10 Jan. - Fri., 17 Jan.
BOS
Boston
SEA
Seattle
CA $310 Roundtrip, found 3 days ago
CA $310
Roundtrip
found 3 days ago
Fri., 10 Jan. - Thu., 16 Jan.
BOS
Boston
SEA
Seattle
CA $322 Roundtrip, found 5 days ago
CA $322
Roundtrip
found 5 days ago
Frequently asked questions
Popular Flight Routes from Boston (BOS)
Travelers at BOS love to visit these top cities. Roam to the top destinations from Boston (BOS) today with the cheap prices from Travelocity!
Popular Flight Routes from Seattle (SEA)
Travelers at SEA love to visit these top cities. Roam to the top destinations from Seattle(SEA) today with the cheap prices from Travelocity!
Top Airlines Routes To SEA
- WestJet Ottawa to Seattle
- WestJet Calgary to Seattle
- Alaska Airlines Kelowna to Seattle
- Alaska Airlines Detroit to Seattle
- WestJet Winnipeg to Seattle
- Air Canada Delhi to Seattle
- Alaska Airlines Victoria to Seattle
- WestJet Montreal to Seattle
- Alaska Airlines Vancouver to Seattle
- WestJet Abbotsford to Seattle
Most Popular
Flights
Calgary to Dallas (YYC - DFW)Vancouver to Palm Springs (YVR - PSP)Vancouver to Las Vegas (YVR - LAS)Detroit to Dallas (DTW - DFW)Calgary to San Diego (YYC - SAN)Montreal to Fort Lauderdale (YUL - FLL)Vancouver to Fort Lauderdale (YVR - FLL)Air Canada Fort Lauderdale (FLL) to Toronto (YYZ) flightsDelta Detroit (DTW) to Las Vegas (LAS) flightsDetroit to Fort Lauderdale (DTW - FLL)Fort Lauderdale to Toronto (FLL - YYZ)Vancouver to San Diego (YVR - SAN)Toronto to Seattle (YYZ - SEA)Vancouver to Dallas (YVR - DFW)Toronto to Dallas (YYZ - DFW)Air Canada Toronto (YYZ) to Myrtle Beach (MYR) flightsJetBlue Airways Buffalo (BUF) to Fort Lauderdale (FLL) flightsVancouver to Seattle (YVR - SEA)Air Canada Toronto (YYZ) to Las Vegas (LAS) flightsWestJet Edmonton (YEG) to Las Vegas (LAS) flightsToronto to New York (YYZ - NYC)Toronto to Philadelphia (YYZ - PHL)Dallas to Toronto (DFW - YYZ)Air Canada Toronto (YYZ) to Fort Lauderdale (FLL) flightsToronto to Las Vegas (YYZ - LAS)WestJet Calgary (YYC) to Seattle (SEA) flightsSwoop Abbotsford (YXX) to Las Vegas (LAS) flightsWestJet Calgary (YYC) to Palm Springs (PSP) flightsAir Canada Toronto (YYZ) to San Diego (SAN) flightsSeattle to Delhi (SEA - DEL)