Boston to Seattle (BOS–SEA) — Airlines, Schedules & Connections
No flights match your filters.
No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.
Most recently operated nonstop flights — the month shown is when each was last scheduled. Most destinations remain reachable with a connection.
No discontinued nonstop flights on record for this route.
BOS–SEA is served by 4 airlines with nonstop service. Alaska Airlines, Delta Air Lines and JetBlue lead the route. The flight covers 2,489 miles in approximately 6h 23m. Beyond nonstop, 1-stop connecting options are also available.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| AS Alaska Airlines Also: AY, DE, HA, JL, KE, QR | 57 | 739, 7M9, B39M | 6h04-6h23 | Oneworld | AY, DE, HA, JL, KE, QR | |
| DL Delta Air Lines Also: AF, KE, LY, SK, VS | 27 | A21N | 5h53-6h33 | SkyTeam | AF, KE, LY, SK, VS | |
| B6 JetBlue Also: EI, TP | 14 | 320, 321 | 6h23-6h25 | – | EI, TP | |
| LA LATAM Chile | 2 | 32Q | 6h21 | – | – |
Weekly Schedule Pattern
Connection Landscape
On-Time Performance
Other ways to reach Seattle from Boston
| Metric | BOS→SEA | ACK→SEA |
|---|---|---|
| Distance from BOS | – | 91 mi |
| Nonstop airlines | 4 | 1 |
| Weekly flights | 247 | 1 |
| Flight time | 6h 23m | 5h 38m |
| Departure OTP | 78% | – |
Travel Essentials
BOS: EDT · SEA: PDT
When it's 6:00 PM in Boston, it's 3:00 PM in Seattle.
MBTA Silver Line SL1 bus runs from South Station (Red Line, Amtrak) through the Ted Williams Tunnel to all Logan terminals; free from the airport, $2.40 inbound. Journey from South Station takes 15–20 minutes depending on traffic. The Blue Line Aquarium station connects to a free water taxi ($12) across the harbor to Logan; scenic but weather-dependent.Taxis from downtown Boston cost $30–45 with the Ted Williams Tunnel toll included. Ride-hails are comparable. The Sumner and Ted Williams tunnels both serve the airport; check traffic before departing, as both frequently back up. Logan is only 3 miles from downtown but tunnel congestion often extends that to 30+ minutes.
Link Light Rail from the airport station (inside the terminal) to downtown Seattle takes 38 minutes ($3.50). No transfers needed; trains run 5am to 1am daily.Taxis and ride-shares to downtown cost $35–55. For Bellevue and Eastside destinations (across Lake Washington), ride-share is faster than Link. Car rentals are in the consolidated rental facility; take the free shuttle from baggage claim. Sound Transit buses serve Tacoma, Renton, and Federal Way.
Marine west coast climate. Winters are mild but persistently grey and rainy (3–9°C). Snow is rare at sea level but can occur December through February, causing significant disruptions when it does. The airport sits between Seattle and Tacoma in an area that receives more fog and low cloud than downtown Seattle.
Summers are famously pleasant (18–25°C) with low humidity and mostly clear skies, one of the best flying climates in the US from June through September. The wettest months are November through January.
BOS–SEA Quick Facts
Frequently Asked Questions
Flights from BOS to SEA
Boston Logan International Airport (BOS) and Seattle–Tacoma International Airport (SEA) are connected by nonstop service from Alaska Airlines, Delta Air Lines, JetBlue and LATAM Chile. With 247 weekly departures, this is a heavily served route.
BOS to SEA Flight Duration and Schedule
Nonstop flight time from BOS to SEA is about 6 hours 23 minutes gate to gate. The route covers a distance of 2,489 miles (4,006 km). There are approximately 247 weekly flights outbound and 187 return, totaling 434 flights per week in both directions.
Connecting Options and Alternatives
1-stop connecting options are also available, commonly via Minneapolis–Saint Paul, Chicago Midway and Portland. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Nantucket (ACK).