Seattle to St Louis (BFI–STL) — Airlines, Schedules & Connections

BFI Airport Page →
1,706 mi airlines charter/private 1/wk
On-time Some delays Frequent delays
Connecting Flight Schedule 9 1-stop flights Verified 6d ago
Also flown by charter / private operators.
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.

✦ 1-Stop connections via 9 hubs
SLC Salt Lake City 5h 58m UA → DLKEWN Salt Lake City (SLC) to St Louis flights
PHX Phoenix 9h 40m WN → AAUAWN Phoenix (PHX) to St Louis flights
DEN Denver 10h 7m EJAUA → F9UAWN Denver (DEN) to St Louis flights
LAX Los Angeles 11h 2m EJAUA → AAASFJ Los Angeles (LAX) to St Louis flights
SFO San Francisco 19h 19m EJAUA → UAWN San Francisco (SFO) to St Louis flights
SEA Seattle ~6h 55m UA → ASAYJL Seattle (SEA) to St Louis flights
ORD Chicago ~7h 46m → AAACAS Chicago (ORD) to St Louis flights
BWI Baltimore ~8h 46m → DLWN Baltimore (BWI) to St Louis flights
PTY Tocumen ~12h 54m CM → CM Tocumen (PTY) to St Louis flights
✦ 1-STOP More options, longer trips
✧ 2-STOP Loading... Reach the hardest destinations
Seattle to St Louis
Connecting service available through multiple hubs.
1,706 mi 4h 7m nonstop +2h ahead

While no nonstop service exists between BFI and STL, 1-stop connecting options are available.

Also explore BFI Routes STL Routes BFI Live Flights STL Live Flights STL Delays
All flights from St Louis (STL) St Louis to Seattle flights
Connections

Connection Landscape

1-stop and 2-stop options for BFI to STL.
1-STOP
One-Stop Connections
9
Hubs
~5h
Fastest
~19h
Longest
SLC ~5h 58m SEA ~6h 55m ORD ~7h 46m BWI ~8h 46m PHX ~9h 40m
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
208
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
BFI → STL
63%
Moderate delays possible. Allow buffer time.
Arriving
63%
Return
STL → BFI
67%
Moderate delays possible. Allow buffer time.
Departing
67%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. STL delays →
Alternatives

Other ways to reach St Louis from Seattle

Nearby airports with service to St. Louis Lambert International Airport.
Metric BFI→STL SEA→STL
Distance from BFI – 5 mi
Nonstop airlines – 6
Weekly flights – 52
Flight time 4h 7m 3h 50m
Seattle (SEA) to St Louis flights
Airports within 200 miles of BFI with service to St. Louis Lambert International Airport.
Know before you go

Travel Essentials

Practical planning for this route.
Time Difference
+2h
St Louis is 2 hours ahead of Seattle.
BFI: PDT · STL: CDT

When it's 6:00 PM in Seattle, it's 8:00 PM in St Louis.
Distance & Flight Time
1,706 mi / 2,745 km
Nonstop flight time is approximately 4h 7m gate to gate.
Facts

BFI–STL Quick Facts

Key statistics for the Seattle to St Louis route.
Route details
Distance1,706 mi / 2,745 km
Flight time4h 7m
Time difference+2 hours
Airlines (nonstop)0
1-stop connectionsAvailable
Origin: BFI
Full nameKing County International Airport - Boeing Field
IATA / ICAOBFI / KBFI
TimezoneAmerica/Los_Angeles
Passengers/yr0.1M
Elevation21 ft / 6 m
Destination: STL
Full nameSt. Louis Lambert International Airport
IATA / ICAOSTL / KSTL
TimezoneAmerica/Chicago
Passengers/yr15.6M
Elevation618 ft / 188 m
FAQ

Frequently Asked Questions

Common questions about BFI to STL flights.
Nonstop flights from King County International Airport - Boeing Field to St. Louis Lambert International Airport take about 4h 7m gate to gate. The route covers 1,706 miles.
Yes, 1-stop connections are available, ranked by layover time. Common connecting points include Salt Lake City, Phoenix Sky Harbor and Denver.
St Louis is 2 hours ahead of Seattle.
Yes, return flights from STL to BFI are available. Use the direction toggle at the top to view the return schedule.
Nearby alternatives include SEA. 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 BFI to STL

King County International Airport - Boeing Field (BFI) and St. Louis Lambert International Airport (STL) are connected through multiple connecting hub airports.

BFI to STL Flight Duration and Schedule

Nonstop flight time from BFI to STL is about 4 hours 7 minutes gate to gate. The route covers a distance of 1,706 miles (2,745 km).

Connecting Options and Alternatives

1-stop connecting options are also available, commonly via Salt Lake City, Phoenix Sky Harbor and Denver. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Seattle (SEA).