San Francisco to Seattle (SFO–BFI) — Airlines, Schedules & Connections

SFO Airport Page →
685 mi airlines 7/wk
On-time Some delays Frequent delays
Flight Schedule 0 flights Verified 11h ago
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  Flight Airline AC Dep Arr Dur OTP Sched  

No flights match your filters.

No nonstop flights on this route. connecting options below.

1-STOP
2-STOP Loading...
San Francisco to Seattle
1 carrier, 7 flights/week nonstop.
1 Airlines 7 Flights/wk 685 mi 0h 27m nonstop +1h ahead 50 1-stop hubs

SFO–BFI is served by 1 airline with nonstop service. TWY leads the route. The flight covers 685 miles in approximately 0h 27m. Beyond nonstop, 50 hubs offer 1-stop connections.

Airline Landscape

All carriers operating nonstop SFO–BFI service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
TWY TWY 1 67%
Alliance coverage
Unaffiliated: TWY (1 flights/wk, 100%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for SFO to BFI.
1-STOP
One-Stop Connections
50
Hubs
~2h
Fastest
~31h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
449
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.

On-Time Performance

What to expect at each end of your journey.
Outbound
SFO → BFI
67%
Moderate delays possible. Allow buffer time.
Departing
67%
Return
BFI → SFO
92%
Generally reliable. Most flights run on time.
Arriving
92%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. SFO delays →

Other ways to reach Seattle from San Francisco

Nearby airports with service to King County International Airport - Boeing Field.
Metric SFO→BFI OAK→BFI SJC→BFI
Distance from SFO 11 mi 30 mi
Nonstop airlines 1 1 3
Weekly flights 7 1 2
Flight time 0h 27m 0h 27m 0h 36m
Departure OTP 67%
Airports within 200 miles of SFO with service to King County International Airport - Boeing Field.

Travel Essentials

Practical planning for this route.
Time Difference
+1h
Seattle is 1 hour ahead of San Francisco.
SFO: PDT · BFI: MDT

When it's 6:00 PM in San Francisco, it's 7:00 PM in Seattle.
Distance & Flight Time
685 mi / 1,102 km
Nonstop flight time is approximately 0h 27m to 0h 45m.
Getting to SFO

BART (Bay Area Rapid Transit) runs from downtown San Francisco (Embarcadero, Powell St.) to the SFO station and then a free AirTrain shuttle to all terminals (30–40 min from Embarcadero, $10.45). BART also connects Oakland and Berkeley; useful for East Bay travelers. Trains run from ~4am to midnight.Taxis from downtown San Francisco cost $40–60. Ride-hails (Uber, Lyft) pick up in the designated area in the garage and are often $30–50 depending on surge pricing. SamTrans buses serve Peninsula cities. Highway 101 and I-280 are heavily congested during commute hours; BART is faster than driving at those times.

SFO–BFI Quick Facts

Key statistics for the San Francisco to Seattle route.
Route details
Distance685 mi / 1,102 km
Flight time0h 27m to 0h 45m
Time difference+1 hour
Airlines (nonstop)1
Weekly flights7 out / 6 return
1-stop connections50 hubs
Origin: SFO
IATA / ICAOSFO / KSFO
TimezoneAmerica/Los_Angeles
Passengers/yr52.3M
Elevation13 ft / 4 m
Destination: BFI
IATA / ICAOBFI / KBFI
TimezoneAmerica/Boise
Passengers/yr0.1M
Elevation21 ft / 6 m

Frequently Asked Questions

Common questions about SFO to BFI flights.
Nonstop flights from San Francisco International Airport to King County International Airport - Boeing Field take approximately 0h 27m to 0h 45m. The route covers 685 miles.
1 airline operates nonstop service: TWY.
There are approximately 7 nonstop flights per week from SFO to BFI. The return direction has about 6 weekly flights.
Yes, 1-stop connections are available through SJC, VNY, BZN, YLW, PDX, SNA, SMF, RNO, GEG, LAS, PSP, SAN, EGE, LAX, SCF, BUR, PHX, TRM, TUS, DAL, DEN, AUS, DFW, OMA, OKC, IAH, RFD, IND, STL, SLC, ORD, CMH, BNA, MSP, BWI, DCA, IAD, EWR, CLT, ATL, YYZ, RSW, KOA, TPA, RDU, YVR, MNL, FLL, YYC and HND. These options provide additional schedule flexibility.
Seattle is 1 hour ahead of San Francisco.
Yes, return flights from BFI to SFO are available. Use the direction toggle at the top to view the return schedule.
Nearby alternatives include OAK, SJC and STS. 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 SFO to BFI

San Francisco International Airport (SFO) and King County International Airport - Boeing Field (BFI) are connected by nonstop service from TWY. With 7 weekly departures, this is a regularly served route.

SFO to BFI Flight Duration and Schedule

Nonstop flight time from SFO to BFI ranges from 0 hours 27 minutes to 0 hours 45 minutes. The route covers a distance of 685 miles (1,102 km). There are approximately 7 weekly flights outbound and 6 return, totaling 13 flights per week in both directions.

Connecting Options and Alternatives

50 one-stop connections are available, with the fastest taking approximately 2 hours via SJC. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Oakland (OAK), San Jose (SJC) and Santa Rosa (STS).