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

PIT Airport Page →
552 mi airlines 15/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
WN4639
WN Southwest
73H
6:50 AM
EDT
7:40 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
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

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
Pittsburgh to St Louis
3 carriers, 15 flights/week nonstop.
3 Airlines 15 Flights/wk 552 mi 1h 50m nonstop -1h behind 104 1-stop hubs

PIT–STL is served by 3 airlines with nonstop service. Southwest Airlines, United Airlines and Delta Air Lines lead the route. The flight covers 552 miles in approximately 1h 50m. Beyond nonstop, 104 hubs offer 1-stop connections.

Airline Landscape

All carriers operating nonstop PIT–STL service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
WN Southwest Airlines 13 738, 73H 1h50 100%
UA United Airlines 2 739, 7M9 1h50 100% Star Alliance
DL Delta Air Lines 0 100% SkyTeam
Aircraft on this route
738 Boeing 737-800 – WN
739 Boeing 737-900 – UA
73H Boeing 737-800 (Winglets) – WN
7M9 Boeing 737 MAX 9 – UA
Alliance coverage
Unaffiliated: WN (13 flights/wk, 87%)
Star Alliance: UA (2 flights/wk, 13%)
SkyTeam: DL (0 flights/wk, 0%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.

Weekly Schedule Pattern

Nonstop flight frequency by day of week, PIT to STL direction.
Mon
3
flights
Tue
2
flights
Wed
2
flights
Thu
3
flights
Fri
2
flights
Sat
1
flight
Sun
2
flights
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
4
Nonstop flights
15
Outbound / wk
13
Return / wk

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for PIT to STL.
1-STOP
One-Stop Connections
104
Hubs
~2h
Fastest
~31h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
2,200
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.

Other ways to reach St Louis from Pittsburgh

Nearby airports with service to St. Louis Lambert International Airport.
Metric PIT→STL CLE→STL
Distance from PIT 106 mi
Nonstop airlines 3 2
Weekly flights 15 13
Flight time 1h 50m 1h 40m
Departure OTP 100%
Airports within 200 miles of PIT with service to St. Louis Lambert International Airport.

Travel Essentials

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

When it's 6:00 PM in Pittsburgh, it's 5:00 PM in St Louis.
Distance & Flight Time
552 mi / 889 km
Nonstop flight time is approximately 1h 50m.

PIT–STL Quick Facts

Key statistics for the Pittsburgh to St Louis route.
Route details
Distance552 mi / 889 km
Flight time1h 50m
Time difference-1 hour
Airlines (nonstop)3
Weekly flights15 out / 13 return
1-stop connections104 hubs
Origin: PIT
IATA / ICAOPIT / KPIT
TimezoneAmerica/New_York
Passengers/yr9.7M
Elevation1,203 ft / 367 m
Destination: STL
IATA / ICAOSTL / KSTL
TimezoneAmerica/Chicago
Passengers/yr15.6M
Elevation618 ft / 188 m

Frequently Asked Questions

Common questions about PIT to STL flights.
Nonstop flights from Pittsburgh International Airport to St. Louis Lambert International Airport take approximately 1h 50m. The route covers 552 miles.
3 airlines operate nonstop service: Delta Air Lines, United Airlines and Southwest Airlines.
There are approximately 15 nonstop flights per week from PIT to STL. The return direction has about 13 weekly flights.
Yes, 1-stop connections are available through CGF, BUF, LWB, MKC, AIK, DAY, SUS, CVG, ROC, HHH, CMH, SWF, PTK, MKE, PWK, ORF, ECP, CLE, PNS, ABE, TEB, DSM, MCI, HPN, AVL, ISM, GSP, OMA, PIE, HYA, BCT, BDL, YUL, JFK, ASE, BED, TUL, EYW, EGE, PBI, NAS, APF, SUA, AFW, BZN, CLD, PSP, SCF, CUN, MRY, PDX, VNY, BUR, MEM, SJC, PUJ, SJU, DTW, SAN, JAX, YYZ, BNA, IAD, DCA, ORD, BWI, RDU, DAL, EWR, MCO, MSP, MDW, ATL, DFW, CLT, TPA, PHL, BOS, LGA, RSW, IAH, MSY, SFO, HOU, SAV, DEN, SEA, LAS, FLL, VPS, LHR, MIA, SLC, PHX, AUS, CHS, MYR, SRQ, GRR, LUK, DPA, IND, OKC and LAX. These options provide additional schedule flexibility.
St Louis is 1 hour behind Pittsburgh.
Yes, return flights from STL to PIT are available. Use the direction toggle at the top to view the return schedule.
Nearby alternatives include CLE. 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 PIT to STL

Pittsburgh International Airport (PIT) and St. Louis Lambert International Airport (STL) are connected by nonstop service from Delta Air Lines, United Airlines and Southwest Airlines. With 15 weekly departures, this is a well served route.

PIT to STL Flight Duration and Schedule

Nonstop flight time from PIT to STL ranges from 1 hours 50 minutes. The route covers a distance of 552 miles (889 km). There are approximately 15 weekly flights outbound and 13 return, totaling 28 flights per week in both directions.

Connecting Options and Alternatives

104 one-stop connections are available, with the fastest taking approximately 2 hours via CGF. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Cleveland (CLE).