Boston to Seattle (BOS–BFI) — Airlines, Schedules & Connections

BOS Airport Page →
2,488 mi airlines 1/wk
On-time Some delays Frequent delays
Connecting Flight Schedule 69 1-stop flights Verified 3d ago
Nonstop 1-Stop 2-Stop Hide separate tickets Hide overnight Hide codeshares
  Flight Airline AC Dep Arr Dur OTP Sched  
✈ Nonstop

No flights match your filters.

No nonstop flights on this route. connecting options below.

✦ 1-STOP More options, longer trips
✧ 2-STOP Loading... Reach the hardest destinations
Boston to Seattle
Connecting service available through multiple hubs.
1 Flights/wk 2,488 mi 5h 26m nonstop -3h behind 69 1-stop hubs

While no nonstop service exists between BOS and BFI, connecting options are available through 69 hubs.

Also explore BOS Routes BFI Routes BOS Live Flights BFI Live Flights BOS Delays
Connections

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for BOS to BFI.
1-STOP
One-Stop Connections
69
Hubs
~6h
Fastest
~32h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
559
Candidates
Two-stop connections loaded in the connections tab above.
Connections computed from published schedules with minimum connection time verification. Use the interactive explorer above the fold to filter by airline, tier, and layover time.
Know before you go

Travel Essentials

Practical planning for this route.
Time Difference
-3h
Seattle is 3 hours behind Boston.
BOS: EDT · BFI: PDT

When it's 6:00 PM in Boston, it's 3:00 PM in Seattle.
Distance & Flight Time
2,488 mi / 4,003 km
Nonstop flight time is approximately 5h 26m.
Getting to BOS

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.

Facts

BOS–BFI Quick Facts

Key statistics for the Boston to Seattle route.
Route details
Distance2,488 mi / 4,003 km
Flight time5h 26m
Time difference-3 hours
Airlines (nonstop)0
Weekly flights1 out / 1 return
1-stop connections69 hubs
Origin: BOS
Full nameBoston Logan International Airport
IATA / ICAOBOS / KBOS
TimezoneAmerica/New_York
Passengers/yr42.2M
Elevation20 ft / 6 m
Destination: BFI
Full nameKing County International Airport - Boeing Field
IATA / ICAOBFI / KBFI
TimezoneAmerica/Los_Angeles
Passengers/yr0.1M
Elevation21 ft / 6 m
FAQ

Frequently Asked Questions

Common questions about BOS to BFI flights.
Nonstop flights from Boston Logan International Airport to King County International Airport - Boeing Field take approximately 5h 26m. The route covers 2,488 miles.
There are approximately 1 nonstop flights per week from BOS to BFI. The return direction has about 1 weekly flights.
Yes, 1-stop connections are available through YYZ, EGE, YVR, OMA, BZN, EWR, BWI, IND, DCA, MSP, SDF, APA, CMH, CLT, LGA, SEA, RNO, PIT, BUF, RDU, STS, SLC, PDX, IAD, CHS, SCF, STL, ORD, ATL, JAX, IAH, SJC, MCI, VNY, BUR, SAN, SNA, BNA, PSP, LAS, DAL, HOU, OAK, OKC, PHX, TRM, PNS, MCO, AUS, TPA, BOI, LAX, DFW, RSW, ANC, FLL, GCM, MIA, SJU, BGI, BRU, VIE, SFO, MDW, DEN, PBI, YYC, HND and SEZ. These options provide additional schedule flexibility.
Seattle is 3 hours behind Boston.
Yes, return flights from BFI to BOS are available. Use the direction toggle at the top to view the return schedule.
Click the 'Search Flights' button to check availability and prices on Google Flights. You can also compare airlines and schedules on this page to find the best option.
See the On-Time Performance section for the latest delay data at both airports. This shows departure and arrival reliability to help you plan.
Route data is updated regularly from official airline schedules. On-time performance data comes from recent airport delay snapshots.

Flights from BOS to BFI

Boston Logan International Airport (BOS) and King County International Airport - Boeing Field (BFI) are connected through multiple connecting hub airports.

BOS to BFI Flight Duration and Schedule

Nonstop flight time from BOS to BFI ranges from 5 hours 26 minutes. The route covers a distance of 2,488 miles (4,003 km). There are approximately 1 weekly flights outbound and 1 return, totaling 2 flights per week in both directions.

Connecting Options and Alternatives

69 one-stop connections are available, with the fastest taking approximately 6 hours via YYZ. Two-stop connections are also available via intermediate hubs.