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

STL Airport Page →
552 mi airlines 13/wk
On-time Some delays Frequent delays
Flight Schedule 6 flights Verified 1h ago
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  Flight Airline AC Dep Arr Dur OTP Sched  
✈ Nonstop
✓
→
WN3773
WN Southwest
7M8
10:15 AM
CDT T2
12:55 PM
EDT
1h 40m
—
M T W T F S S
Prices
✓
→
WN2620
WN Southwest
737
6:45 PM
CDT T2
9:20 PM
EDT
1h 35m
—
M T W T F S S
Prices
✓
←
WN4639
WN Southwest
B38M
7:15 AM
EDT
8:05 AM
CDT
1h 50m
—
M T W T F S S
Prices
✓
←
UA3784
UA United
739
5:00 PM
EDT
5:50 PM
CDT
1h 50m
—
M T W T F S S
Prices
✓
←
WN3945
WN Southwest
738
7:10 PM
EDT
8:00 PM
CDT
1h 50m
—
M T W T F S S
Prices
✓
←
UA3776
UA United
7M9
10:40 PM
EDT
11:30 PM
CDT
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 More options, longer trips
✧ 2-STOP Loading... Reach the hardest destinations
St Louis to Pittsburgh
2 carriers, 13 flights/week nonstop.
2 Airlines 13 Flights/wk 552 mi 1h 35m nonstop +1h ahead 97 1-stop hubs

STL–PIT is served by 2 airlines with nonstop service. Southwest Airlines and United Airlines lead the route. The flight covers 552 miles in approximately 1h 35m. Beyond nonstop, 97 hubs offer 1-stop connections.

Also explore STL Routes PIT Routes STL Live Flights PIT Live Flights STL Delays PIT Delays
Carriers on this route

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 13 737, 7M8 1h35-1h40 97% – –
UA United Airlines 1 – – 97% Star Alliance –
Aircraft on this route
737 Boeing 737-700 – WN
7M8 Boeing 737 MAX 8 – WN
Alliance coverage
Unaffiliated: WN (13 flights/wk, 93%)
Star Alliance: UA (1 flights/wk, 7%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.
Schedule

Weekly Schedule Pattern

Nonstop flight frequency by day of week, STL to PIT direction.
Mon
2
flights
Tue
2
flights
Wed
2
flights
Thu
2
flights
Fri
2
flights
Sat
1
flight
Sun
2
flights
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
2
Nonstop flights
13
Outbound / wk
15
Return / wk
Connections

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for STL to PIT.
1-STOP
One-Stop Connections
97
Hubs
~2h
Fastest
~28h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
2,102
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.
Know before you go

Travel Essentials

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

When it's 6:00 PM in St Louis, it's 7:00 PM in Pittsburgh.
Distance & Flight Time
552 mi / 889 km
Nonstop flight time is approximately 1h 35m to 1h 40m.
Facts

STL–PIT Quick Facts

Key statistics for the St Louis to Pittsburgh route.
Route details
Distance552 mi / 889 km
Flight time1h 35m to 1h 40m
Time difference+1 hour
Airlines (nonstop)2
Weekly flights13 out / 15 return
1-stop connections97 hubs
Origin: STL
Full nameSt. Louis Lambert International Airport
IATA / ICAOSTL / KSTL
TimezoneAmerica/Chicago
Passengers/yr15.6M
Elevation618 ft / 188 m
Destination: PIT
Full namePittsburgh International Airport
IATA / ICAOPIT / KPIT
TimezoneAmerica/New_York
Passengers/yr9.7M
Elevation1,203 ft / 367 m
FAQ

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 1h 40m. The route covers 552 miles.
2 airlines operate nonstop service: United Airlines and Southwest Airlines.
There are approximately 13 nonstop flights per week from STL to PIT. The return direction has about 15 weekly flights.
Yes, 1-stop connections are available through SUS, PWK, LOT, CMH, MKE, YIP, MMU, AFW, MSN, IND, CVG, USA, CHO, PDK, TEB, MYR, AGS, GPT, ILM, FRG, BDL, FOK, SYR, RIC, BED, PBI, APF, FTW, LNS, NAS, OKC, SUA, MLB, BJC, BCT, FXE, YWG, EGE, TUL, BZN, SCF, VNY, SJC, RNO, PSP, SNA, SBA, PUJ, ABQ, BUR, MSY, IAD, MIA, SAN, MSP, ATL, BNA, ORD, PHX, BWI, MDW, DTW, VPS, AUS, PHL, DCA, FLL, RDU, EWR, IAH, LTN, DEN, TPA, MCO, CLT, LGA, RSW, JAX, BOS, DFW, LAS, CUN, DAL, SLC, SFO, LHR, SRQ, HOU, SEA, SAV, JFK, YYZ, CLE, CHS, YUL, LAX and SBN. These options provide additional schedule flexibility.
Pittsburgh is 1 hour ahead of St Louis.
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 United Airlines and Southwest Airlines. With 13 weekly departures, this is a regularly served route.

STL to PIT Flight Duration and Schedule

Nonstop flight time from STL to PIT ranges from 1 hours 35 minutes to 1 hours 40 minutes. The route covers a distance of 552 miles (889 km). There are approximately 13 weekly flights outbound and 15 return, totaling 28 flights per week in both directions.

Connecting Options and Alternatives

97 one-stop connections are available, with the fastest taking approximately 2 hours via SUS. Two-stop connections are also available via intermediate hubs.