St Louis to Buffalo (STL–BUF) — Airlines, Schedules & Connections

STL Airport Page →
673 mi airlines charter/private
On-time Some delays Frequent delays
Connecting Flight Schedule 25 1-stop flights Verified 1mo 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.

Last scheduled nonstop: Aug 2026.

✦ 1-Stop connections via 10 hubs
MDW Chicago 3h 25m WN → WN Chicago (MDW) to Buffalo flights
DTW Detroit 3h 33m AFDLKE → AAAFDL Detroit (DTW) to Buffalo flights
BWI Baltimore 4h 5m WN → WN Baltimore (BWI) to Buffalo flights
ORD Chicago 4h 8m AAACAS → AAACAS Chicago (ORD) to Buffalo flights
BNA Nashville 4h 10m JREWN → WN Nashville (BNA) to Buffalo flights
DCA Washington 4h 18m AAWN → AAAS Washington (DCA) to Buffalo flights
ATL Atlanta 4h 21m AFAMDL → AMDLF9 Atlanta (ATL) to Buffalo flights
CLT Charlotte 4h 22m AABAWN → AAXSR Charlotte (CLT) to Buffalo flights
IAD Dulles 4h 26m AVCMJTL → AVCMSN Dulles (IAD) to Buffalo flights
PHL Philadelphia 4h 37m AAEIIB → AAQR Philadelphia (PHL) to Buffalo flights
✦ 1-STOP More options, longer trips
✧ 2-STOP Loading... Reach the hardest destinations
St Louis to Buffalo
Connecting service available through multiple hubs.
1 Airlines 673 mi 1h 46m nonstop +1h ahead

STL–BUF had nonstop service from United Airlines, last on the schedule in August 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 673 miles in 1h 46m.

Also explore Browse available seat maps STL Routes BUF Routes STL Live Flights BUF Live Flights STL Delays BUF Delays
All flights from Buffalo (BUF) Buffalo to St Louis flights
Carriers on this route

Airline Landscape

Carriers that operated nonstop STL–BUF service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
UA United Airlines 0 – – 100% Star Alliance –
Alliance coverage
Star Alliance: UA (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 STL to BUF.
1-STOP
One-Stop Connections
25
Hubs
~3h
Fastest
~23h
Longest
MDW ~3h 25m DTW ~3h 33m BWI ~4h 5m ORD ~4h 8m BNA ~4h 10m
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
1,235
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
STL → BUF
100%
Generally reliable. Most flights run on time.
Departing
100%
Arriving
100%
Return
BUF → STL
100%
Generally reliable. Most flights run on time.
Departing
100%
Arriving
75%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. STL delays → BUF delays →
Know before you go

Travel Essentials

Practical planning for this route.
Time Difference
+1h
Buffalo is 1 hour ahead of St Louis.
STL: CDT · BUF: EDT

When it's 6:00 PM in St Louis, it's 7:00 PM in Buffalo.
Distance & Flight Time
673 mi / 1,083 km
Nonstop flight time is approximately 1h 46m gate to gate.
Facts

STL–BUF Quick Facts

Key statistics for the St Louis to Buffalo route.
Route details
Distance673 mi / 1,083 km
Flight time1h 46m
Time difference+1 hour
Airlines (nonstop)1
1-stop connectionsAvailable
Origin: STL
Full nameSt. Louis Lambert International Airport
IATA / ICAOSTL / KSTL
TimezoneAmerica/Chicago
Passengers/yr15.6M
Elevation618 ft / 188 m
Destination: BUF
Full nameBuffalo Niagara International Airport
IATA / ICAOBUF / KBUF
TimezoneAmerica/New_York
Passengers/yr5.0M
Elevation728 ft / 222 m
FAQ

Frequently Asked Questions

Common questions about STL to BUF flights.
Nonstop flights from St. Louis Lambert International Airport to Buffalo Niagara International Airport take about 1h 46m gate to gate. The route covers 673 miles.
1 airline operated the nonstop from STL to BUF: United Airlines. The last scheduled nonstop was in August 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 August 2026. You can still fly it with one stop, and the connecting options above are sorted by layover. Nonstop, the hop took about 1h 46m.
Yes, 1-stop connections are available, ranked by layover time. Common connecting points include Chicago Midway, Detroit Metropolitan Wayne County and Baltimore/Washington International Thurgood Marshall.
On a single ticket, yes. Your bags are checked through to BUF and move between planes without you. On two separate tickets you collect your bags at the connecting airport and recheck them, so build in extra layover time.
Buffalo is 1 hour ahead of St Louis.
Yes, return flights from BUF to STL 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 STL to BUF

St. Louis Lambert International Airport (STL) and Buffalo Niagara International Airport (BUF) had nonstop service from United Airlines, last on the schedule in August 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.

STL to BUF Flight Duration and Schedule

Nonstop flight time from STL to BUF is about 1 hours 46 minutes gate to gate. The route covers a distance of 673 miles (1,083 km).

Connecting Options and Alternatives

1-stop connecting options are also available, commonly via Chicago Midway, Detroit Metropolitan Wayne County and Baltimore/Washington International Thurgood Marshall. Two-stop connections are also available via intermediate hubs.