Buffalo to Seattle (BUF–BFI) — Airlines, Schedules & Connections

BUF Airport Page →
2,115 mi airlines charter/private
On-time Some delays Frequent delays
Connecting Flight Schedule 6 1-stop flights Verified 2mos ago
Nonstop Charter / private 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 scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.

Last scheduled nonstop: Apr 2026.

✦ 1-Stop connections via 6 hubs
LAX Los Angeles 18h 30m B6 → UA Los Angeles (LAX) to Seattle flights
IAD Dulles ~8h 1m AVCMSN → DL Dulles (IAD) to Seattle flights
JFK New York ~8h 51m AFAMAT → DL New York (JFK) to Seattle flights
ATL Atlanta ~9h 5m AFAMDL → Atlanta (ATL) to Seattle flights
BWI Baltimore ~9h 20m WN → DL Baltimore (BWI) to Seattle flights
TPA Tampa ~9h 57m WN → Tampa (TPA) to Seattle flights
✦ 1-STOP More options, longer trips
✧ 2-STOP Loading... Reach the hardest destinations
Buffalo to Seattle
Connecting service available through multiple hubs.
1 Airlines 2,115 mi 4h 58m nonstop -3h behind

BUF–BFI had nonstop service from Air Canada, last on the schedule in April 2026. There's no nonstop on it right now, so today you'd fly it with one stop. The connecting options below are sorted by layover. Nonstop, it's about 2,115 miles in 4h 58m.

Also explore BUF Routes BFI Routes BUF Live Flights BFI Live Flights BUF Delays
All flights from Seattle (BFI) Seattle to Buffalo flights
Carriers on this route

Airline Landscape

Carriers that operated nonstop BUF–BFI service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
AC Air Canada 0 – – 61% Star Alliance –
Alliance coverage
Star Alliance: AC (0 flights/wk, 0%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.
Connections

Connection Landscape

1-stop and 2-stop options for BUF to BFI.
1-STOP
One-Stop Connections
6
Hubs
~8h
Fastest
~18h
Longest
IAD ~8h 1m JFK ~8h 51m ATL ~9h 5m BWI ~9h 20m TPA ~9h 57m
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
45
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.
Reliability

On-Time Performance

What to expect at each end of your journey.
Outbound
BUF → BFI
61%
Moderate delays possible. Allow buffer time.
Departing
61%
Return
BFI → BUF
85%
Generally reliable. Most flights run on time.
Arriving
85%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. BUF delays →
Alternatives

Other ways to reach Seattle from Buffalo

Nearby airports with service to King County International Airport - Boeing Field.
Metric BUF→BFI YYZ→BFI
Distance from BUF – 68 mi
Nonstop airlines – 2
Weekly flights – 1
Flight time 4h 58m 4h 39m
Departure OTP 61% –
Toronto (YYZ) to Seattle flights
Airports within 200 miles of BUF with service to King County International Airport - Boeing Field.
Know before you go

Travel Essentials

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

When it's 6:00 PM in Buffalo, it's 3:00 PM in Seattle.
Distance & Flight Time
2,115 mi / 3,404 km
Nonstop flight time is approximately 4h 58m gate to gate.
Facts

BUF–BFI Quick Facts

Key statistics for the Buffalo to Seattle route.
Route details
Distance2,115 mi / 3,404 km
Flight time4h 58m
Time difference-3 hours
Airlines (nonstop)1
1-stop connectionsAvailable
Origin: BUF
Full nameBuffalo Niagara International Airport
IATA / ICAOBUF / KBUF
TimezoneAmerica/New_York
Passengers/yr5.0M
Elevation728 ft / 222 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 BUF to BFI flights.
Nonstop flights from Buffalo Niagara International Airport to King County International Airport - Boeing Field take about 4h 58m gate to gate. The route covers 2,115 miles.
1 airline operated the nonstop from BUF to BFI: Air Canada. The last scheduled nonstop was in April 2026. There's no nonstop right now, so today you'd fly it with one stop. See the connection options above, ranked by layover.
Not right now. The last scheduled nonstop was in April 2026. You can still fly it with one stop, and the connecting options above are sorted by layover. Nonstop, the hop took about 4h 58m.
Yes, 1-stop connections are available, ranked by layover time. Common connecting points include Los Angeles.
Seattle is 3 hours behind Buffalo.
Nearby alternatives include YYZ. See the Alternatives section for a full comparison.
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 BUF to BFI

Buffalo Niagara International Airport (BUF) and King County International Airport - Boeing Field (BFI) had nonstop service from Air Canada, last on the schedule in April 2026. The nonstop is dormant right now, so the way to fly it today is one connection, and the options above are sorted by layover.

BUF to BFI Flight Duration and Schedule

Nonstop flight time from BUF to BFI is about 4 hours 58 minutes gate to gate. The route covers a distance of 2,115 miles (3,404 km).

Connecting Options and Alternatives

1-stop connecting options are also available, commonly via Los Angeles. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Toronto (YYZ).