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

BUF Airport Page →
2,115 mi airlines 0/wk
On-time Some delays Frequent delays
Connecting Flight Schedule 39 1-stop flights Verified 3w ago
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  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
Buffalo to Seattle
Connecting service available through multiple hubs.
1 Airlines 2,115 mi 4h 58m nonstop -3h behind 39 1-stop hubs

BUF–BFI is served by 1 airline with nonstop service. Air Canada leads the route. The flight covers 2,115 miles in approximately 4h 58m. Beyond nonstop, 39 hubs offer 1-stop connections.

Also explore BUF Routes BFI Routes BUF Live Flights BFI Live Flights BUF Delays
Carriers on this route

Airline Landscape

All carriers operating nonstop BUF–BFI service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
AC Air Canada 0 – – 100% 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

Beyond nonstop. 1-stop and 2-stop options for BUF to BFI.
1-STOP
One-Stop Connections
39
Hubs
~5h
Fastest
~20h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
206
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.
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 1 2
Weekly flights 0 1
Flight time 4h 58m 2h 56m
Departure OTP 100% –
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.
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 connections39 hubs
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 approximately 4h 58m. The route covers 2,115 miles.
1 airline operates nonstop service: Air Canada.
Yes, 1-stop connections are available through IND, STL, EGE, BZN, MSP, CMH, BWI, PIT, EWR, DCA, SLC, CLT, CHS, BOI, ORD, RDU, JAX, ATL, SCF, IAD, LGA, BOS, BNA, LAS, SNA, PHX, DEN, LAX, OKC, DAL, DFW, MCO, TPA, PBI, RSW, FLL, MIA, SJU and MDW. These options provide additional schedule flexibility.
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) are connected by nonstop service from Air Canada.

BUF to BFI Flight Duration and Schedule

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

Connecting Options and Alternatives

39 one-stop connections are available, with the fastest taking approximately 5 hours via IND. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Toronto (YYZ).