St Louis to Pittsburgh (STL–PIT) — Airlines, Schedules & Connections

STL Airport Page →
552 mi airlines 21/wk
On-time Some delays Frequent delays
Flight Schedule 11 flights Verified 36m ago
Nonstop 1-Stop 2-Stop Hide separate tickets Hide overnight
  Flight Airline AC Dep Arr Dur OTP Sched  
WN2074
WN Southwest
7S7
1:08 PM
EDT T2
3:39 PM
EDT
2h 31m
M T W T F S S
Prices
WN8860
WN Southwest
6:12 PM
EDT
8:39 PM
EDT
2h 27m
M T W T F S S
Prices
WN2620
WN Southwest
7S7
6:45 PM
EDT T2
9:20 PM
EDT
1h 35m
M T W T F S S
Prices
WN2338
WN Southwest
737
7:40 PM
EDT T2
10:15 PM
EDT
1h 35m
M T W T F S S
Prices
WN1190
WN Southwest
737
6:40 AM
EDT
7:35 AM
EDT
1h 55m
M T W T F S S
Prices
WN4639
WN Southwest
73H
6:50 AM
EDT
7:40 AM
EDT
1h 50m
M T W T F S S
Prices
WN3263
WN Southwest
738
6:50 AM
EDT
7:45 AM
EDT
1h 55m
M T W T F S S
Prices
WN1687
WN Southwest
7S7
7:05 PM
EDT
8:00 PM
EDT
1h 55m
M T W T F S S
Prices
WN3945
WN Southwest
7M8
7:10 PM
EDT
8:00 PM
EDT
1h 50m
M T W T F S S
Prices
WN3750
WN Southwest
B38M
7:40 PM
EDT
8:30 PM
EDT
1h 50m
M T W T F S S
Prices
WN1502
WN Southwest
7M8
8:05 PM
EDT
8:55 PM
EDT
1h 50m
M T W T F S S
Prices

No flights match your filters.

No nonstop flights on this route. connecting options below.

1-STOP
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St Louis to Pittsburgh
1 carrier, 21 flights/week nonstop.
1 Airlines 21 Flights/wk 552 mi 1h 35m nonstop 56 1-stop hubs

STL–PIT is served by 1 airline with nonstop service. Southwest Airlines leads the route. The flight covers 552 miles in approximately 1h 35m. Beyond nonstop, 56 hubs offer 1-stop connections.

Airline Landscape

All carriers operating nonstop STL–PIT service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
WN Southwest Airlines 21 737, 7S7 1h35-2h31 73%
Aircraft on this route
737 Boeing 737-700 – WN
7S7 Boeing 737 MAX 7 – WN
Alliance coverage
Unaffiliated: WN (21 flights/wk, 100%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.

Weekly Schedule Pattern

Nonstop flight frequency by day of week, STL to PIT direction.
Mon
3
flights
Tue
4
flights
Wed
3
flights
Thu
3
flights
Fri
3
flights
Sat
2
flights
Sun
3
flights
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
4
Nonstop flights
21
Outbound / wk
26
Return / wk

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for STL to PIT.
1-STOP
One-Stop Connections
56
Hubs
~3h
Fastest
~31h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
2,101
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
STL → PIT
73%
Moderate delays possible. Allow buffer time.
Departing
73%
Arriving
67%
Return
PIT → STL
40%
Frequent delays expected. Consider flexible booking.
Departing
40%
Arriving
87%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. STL delays → PIT delays →

Travel Essentials

Practical planning for this route.
Time Difference
0h
Pittsburgh is 0 hours the same as St Louis.
STL: EDT · PIT: EDT

When it's 6:00 PM in St Louis, it's 6:00 PM in Pittsburgh.
Distance & Flight Time
552 mi / 889 km
Nonstop flight time is approximately 1h 35m to 2h 31m.

STL–PIT Quick Facts

Key statistics for the St Louis to Pittsburgh route.
Route details
Distance552 mi / 889 km
Flight time1h 35m to 2h 31m
Time difference0 hours
Airlines (nonstop)1
Weekly flights21 out / 26 return
1-stop connections56 hubs
Origin: STL
IATA / ICAOSTL / KSTL
TimezoneAmerica/Indiana/Vincennes
Passengers/yr15.6M
Elevation618 ft / 188 m
Destination: PIT
IATA / ICAOPIT / KPIT
TimezoneAmerica/Detroit
Passengers/yr9.7M
Elevation1,203 ft / 367 m

Frequently Asked Questions

Common questions about STL to PIT flights.
Nonstop flights from St. Louis Lambert International Airport to Pittsburgh International Airport take approximately 1h 35m to 2h 31m. The route covers 552 miles.
1 airline operates nonstop service: Southwest Airlines.
There are approximately 21 nonstop flights per week from STL to PIT. The return direction has about 26 weekly flights.
Yes, 1-stop connections are available through CLE, IND, CMH, SUS, YIP, SAV, TEB, BDL, RIC, LNS, SUA, BCT, FXE, IAD, VPS, CUN, BNA, JAX, MIA, MSP, PHL, MDW, DTW, ORD, BWI, DEN, PHX, DCA, RSW, EWR, SFO, TPA, IAH, MCO, DFW, RDU, ATL, CLT, LGA, DAL, HOU, FLL, BOS, AUS, LAS, SRQ, SLC, MSY, CHS, YYZ, PBI, SEA, SBN, SAN, PUJ and LAX. These options provide additional schedule flexibility.
Yes, return flights from PIT 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 PIT

St. Louis Lambert International Airport (STL) and Pittsburgh International Airport (PIT) are connected by nonstop service from Southwest Airlines. With 21 weekly departures, this is a well served route.

STL to PIT Flight Duration and Schedule

Nonstop flight time from STL to PIT ranges from 1 hours 35 minutes to 2 hours 31 minutes. The route covers a distance of 552 miles (889 km). There are approximately 21 weekly flights outbound and 26 return, totaling 47 flights per week in both directions.

Connecting Options and Alternatives

56 one-stop connections are available, with the fastest taking approximately 3 hours via CLE. Two-stop connections are also available via intermediate hubs.