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Pittsburgh International Airport (PIT) to St. Louis (STL) Flights from ₹9,340

Fares on this route currently start from ₹9,340. Compare live PIT to STL prices, non-stop and connecting flights, departure times and airline choices before booking. Use the search panel to change origin, destination, passengers, cabin and trip type instantly.
PIT → STL Approx. 889.08 km 04 Jun 2026 Live inventory
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Showing 25 of 105 live flights
American Airlines
AA-349
05:01
06/04/2026
PIT
Pittsburgh International Airport
3h 31m
1 Stop
⏱ CLT · 1h 6mCLT Airport
08:32
06/04/2026
STL
St Louis Lambert International Airport
₹9,340
per person
✕ Non-refundable16 fare options
American Airlines
AA-2296
20:42
06/04/2026
PIT
Pittsburgh International Airport
3h 34m
1 Stop
⏱ ORD · 1h 21mORD Airport
00:16
06/05/2026
+1
STL
St Louis Lambert International Airport
₹9,340
per person
✓ Refundable16 fare options
United Airlines
UA-1803
06:49
06/04/2026
PIT
Pittsburgh International Airport
5h 22m
1 Stop
⏱ ORD · 3h 3mORD Airport
12:11
06/04/2026
STL
St Louis Lambert International Airport
₹13,143
per person
✓ Refundable3 fare options
Southwest Airlines
WN-3387
20:15
06/04/2026
PIT
Pittsburgh International Airport
0h 45m
Non-stop
21:00
06/04/2026
STL
St Louis Lambert International Airport
₹13,991
per person
✕ Non-refundable9 fare options
Delta Air Lines
DL-5319
06:30
06/04/2026
PIT
Pittsburgh International Airport
2h 59m
1 Stop
⏱ DTW · 1h 9mDTW Airport
09:29
06/04/2026
STL
St Louis Lambert International Airport
₹14,477
per person
✕ Non-refundable6 fare options
Delta Air Lines
DL-3122
19:50
06/04/2026
PIT
Pittsburgh International Airport
4h 9m
1 Stop
⏱ ATL · 1h 25mATL Airport
23:59
06/04/2026
STL
St Louis Lambert International Airport
₹14,477
per person
✕ Non-refundable6 fare options
Delta Air Lines
DL-1568
18:25
06/04/2026
PIT
Pittsburgh International Airport
5h 34m
1 Stop
⏱ ATL · 2h 56mATL Airport
23:59
06/04/2026
STL
St Louis Lambert International Airport
₹14,622
per person
✕ Non-refundable
Southwest Airlines
WN-4073
20:10
06/04/2026
PIT
Pittsburgh International Airport
2h 40m
1 Stop
⏱ MDW · 0h 55mMDW Airport
22:50
06/04/2026
STL
St Louis Lambert International Airport
₹15,832
per person
✕ Non-refundable9 fare options
Southwest Airlines
WN-3374
05:10
06/04/2026
PIT
Pittsburgh International Airport
5h 10m
1 Stop
⏱ MCO · 1h 20mMCO Airport
10:20
06/04/2026
STL
St Louis Lambert International Airport
₹15,832
per person
✕ Non-refundable9 fare options
Southwest Airlines
WN-4417
05:45
06/04/2026
PIT
Pittsburgh International Airport
5h 5m
1 Stop
⏱ BWI · 2h 40mBWI Airport
10:50
06/04/2026
STL
St Louis Lambert International Airport
₹15,832
per person
✕ Non-refundable9 fare options
Southwest Airlines
WN-4604
19:55
06/04/2026
PIT
Pittsburgh International Airport
4h 45m
1 Stop
⏱ HOU · 0h 45mHOU Airport
00:40
06/05/2026
+1
STL
St Louis Lambert International Airport
₹15,975
per person
✓ Refundable4 fare options
Southwest Airlines
WN-3376
19:10
06/04/2026
PIT
Pittsburgh International Airport
4h 55m
1 Stop
⏱ MCO · 1h 5mMCO Airport
00:05
06/05/2026
+1
STL
St Louis Lambert International Airport
₹15,975
per person
✓ Refundable4 fare options
Southwest Airlines
WN-3374
05:10
06/04/2026
PIT
Pittsburgh International Airport
7h 30m
1 Stop
⏱ MCO · 3h 40mMCO Airport
12:40
06/04/2026
STL
St Louis Lambert International Airport
₹15,975
per person
✓ Refundable4 fare options
Southwest Airlines
WN-3377
21:55
06/04/2026
PIT
Pittsburgh International Airport
10h 25m
1 Stop
⏱ MCO · 6h 35mMCO Airport
08:20
06/05/2026
+1
STL
St Louis Lambert International Airport
₹16,507
per person
✓ Refundable4 fare options
Delta Air Lines
DL-5855
17:59
06/04/2026
PIT
Pittsburgh International Airport
3h 10m
1 Stop
⏱ DTW · 1h 22mDTW Airport
21:09
06/04/2026
STL
St Louis Lambert International Airport
₹18,353
per person
✕ Non-refundable6 fare options
Delta Air Lines
DL-1504
05:40
06/04/2026
PIT
Pittsburgh International Airport
4h 4m
1 Stop
⏱ ATL · 1h 40mATL Airport
09:44
06/04/2026
STL
St Louis Lambert International Airport
₹18,537
per person
✕ Non-refundable
Delta Air Lines
DL-1345
13:40
06/04/2026
PIT
Pittsburgh International Airport
4h 16m
1 Stop
⏱ ATL · 1h 48mATL Airport
17:56
06/04/2026
STL
St Louis Lambert International Airport
₹18,537
per person
✕ Non-refundable
Delta Air Lines
DL-1363
12:01
06/04/2026
PIT
Pittsburgh International Airport
5h 55m
1 Stop
⏱ ATL · 3h 32mATL Airport
17:56
06/04/2026
STL
St Louis Lambert International Airport
₹18,537
per person
✕ Non-refundable
American Airlines
AA-4427
06:00
06/04/2026
PIT
Pittsburgh International Airport
7h 12m
1 Stop
⏱ ORD · 4h 50mORD Airport
13:12
06/04/2026
STL
St Louis Lambert International Airport
₹20,790
per person
✕ Non-refundable6 fare options
United Airlines
UA-602
18:16
06/04/2026
PIT
Pittsburgh International Airport
3h 14m
1 Stop
⏱ ORD · 0h 54mORD Airport
21:30
06/04/2026
STL
St Louis Lambert International Airport
₹21,185
per person
✕ Non-refundable6 fare options
United Airlines
UA-3461
08:51
06/04/2026
PIT
Pittsburgh International Airport
3h 20m
1 Stop
⏱ ORD · 0h 55mORD Airport
12:11
06/04/2026
STL
St Louis Lambert International Airport
₹21,305
per person
✓ Refundable3 fare options
United Airlines
UA-1803
06:49
06/04/2026
PIT
Pittsburgh International Airport
3h 50m
1 Stop
⏱ ORD · 1h 28mORD Airport
10:39
06/04/2026
STL
St Louis Lambert International Airport
₹21,305
per person
✓ Refundable3 fare options
United Airlines
UA-455
10:54
06/04/2026
PIT
Pittsburgh International Airport
4h 52m
1 Stop
⏱ ORD · 2h 38mORD Airport
15:46
06/04/2026
STL
St Louis Lambert International Airport
₹21,305
per person
✓ Refundable3 fare options
Southwest Airlines
WN-4673
15:50
06/04/2026
PIT
Pittsburgh International Airport
3h 20m
1 Stop
⏱ MDW · 1h 40mMDW Airport
19:10
06/04/2026
STL
St Louis Lambert International Airport
₹21,406
per person
✕ Non-refundable9 fare options
Southwest Airlines
WN-4726
08:00
06/04/2026
PIT
Pittsburgh International Airport
4h 40m
1 Stop
⏱ MCO · 0h 55mMCO Airport
12:40
06/04/2026
STL
St Louis Lambert International Airport
₹21,406
per person
✕ Non-refundable🔥 Last 3 seats9 fare options
😕 No flights match your filters.
Pittsburgh International Airport (PIT)
📍 Pittsburgh International Airport
🌍 United States
🕐 GMT -5
📐 Latitude: 40.49150085
📐 Longitude: -80.23290253
St. Louis (STL)
📍 St Louis Lambert International Airport
🌍 United States
🕐 GMT -6
📐 Latitude: 38.748697
📐 Longitude: -90.370003

✈ Distance: Pittsburgh International Airport,USA to St. Louis,USA — 889.08 km

📅 Results on this page are loaded for 04 Jun 2026. Click View all flights for the complete live search.

Pittsburgh International Airport to St. Louis — what to expect when booking

The PIT–STL route is served by multiple carriers throughout the year. Fares on this route can move quickly — a price available now may not be there 30 minutes later.

If your dates are flexible, try shifting your departure by a day or two using the date strip above. Mid-week departures often show lower base fares compared to weekend starts on many routes.

The distance between Pittsburgh International Airport,USA and St. Louis,USA is approximately 889.08 km.

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More flights from Pittsburgh International Airport (PIT)
31 routes
Pittsburgh International Airport → Atlanta
PIT → ATL
Pittsburgh International Airport → Boston
PIT → BOS
Pittsburgh International Airport → Cancun
PIT → CUN
Pittsburgh International Airport → Charlotte
PIT → CLT
Pittsburgh International Airport → Chicago
PIT → MDW
Pittsburgh International Airport → Cincinnati
PIT → CVG
Pittsburgh International Airport → Denver
PIT → DEN
Pittsburgh International Airport → Detroit
PIT → DTW
Pittsburgh International Airport → Fort Lauderdale
PIT → FLL
Pittsburgh International Airport → Fort Myers
PIT → RSW
Pittsburgh International Airport → Fort Worth
PIT → DFW
Pittsburgh International Airport → Hartford
PIT → BDL
Pittsburgh International Airport → Houston
PIT → IAH
Pittsburgh International Airport → Houston
PIT → HOU
Pittsburgh International Airport → Las Vegas
PIT → LAS
Pittsburgh International Airport → Los Angeles
PIT → LAX
Pittsburgh International Airport → Memphis
PIT → MEM
Pittsburgh International Airport → Miami
PIT → MIA
Pittsburgh International Airport → Minneapolis
PIT → MSP
Pittsburgh International Airport → Nashville
PIT → BNA
Pittsburgh International Airport → New York
PIT → LGA
Pittsburgh International Airport → Orlando
PIT → MCO
Pittsburgh International Airport → Paris
PIT → CDG
Pittsburgh International Airport → Philadelphia
PIT → PHL
Pittsburgh International Airport → Phoenix
PIT → PHX
Pittsburgh International Airport → Punta Cana
PIT → PUJ
Pittsburgh International Airport → Raleigh
PIT → RDU
Pittsburgh International Airport → San Francisco
PIT → SFO
Pittsburgh International Airport → Tampa
PIT → TPA
Pittsburgh International Airport → Toronto
PIT → YYZ
Pittsburgh International Airport → Washington DC
PIT → IAD
More flights from St. Louis (STL)
55 routes
St. Louis → Atlanta
STL → ATL
St. Louis → Boston
STL → BOS
St. Louis → Burlington IA
STL → BRL
St. Louis → Cancun
STL → CUN
St. Louis → Cape Girardeau
STL → CGI
St. Louis → Charlotte
STL → CLT
St. Louis → Chicago
STL → MDW
St. Louis → Cincinnati
STL → CVG
St. Louis → Cleveland
STL → CLE
St. Louis → Columbus
STL → CMH
St. Louis → Dallas
STL → DAL
St. Louis → Decatur
STL → DEC
St. Louis → Denver
STL → DEN
St. Louis → Detroit
STL → DTW
St. Louis → Fort Lauderdale
STL → FLL
St. Louis → Fort Leonard Wood
STL → TBN
St. Louis → Fort Myers
STL → RSW
St. Louis → Fort Worth
STL → DFW
St. Louis → Grand Rapids
STL → GRR
St. Louis → Houston
STL → IAH
St. Louis → Houston
STL → HOU
St. Louis → Jonesboro
STL → JBR
St. Louis → Kansas City
STL → MCI
St. Louis → Kirksville
STL → IRK
St. Louis → Las Vegas
STL → LAS
St. Louis → Little Rock
STL → LIT
St. Louis → Los Angeles
STL → LAX
St. Louis → Marion
STL → MWA
St. Louis → Miami
STL → MIA
St. Louis → Milwaukee
STL → MKE
St. Louis → Minneapolis
STL → MSP
St. Louis → Montego Bay
STL → MBJ
St. Louis → Nashville
STL → BNA
St. Louis → New Orleans
STL → MSY
St. Louis → New York
STL → JFK
St. Louis → Oklahoma City
STL → OKC
St. Louis → Omaha
STL → OMA
St. Louis → Orlando
STL → MCO
St. Louis → Owensboro
STL → OWB
St. Louis → Philadelphia
STL → PHL
St. Louis → Phoenix
STL → PHX
St. Louis → Pittsburgh International Airport
STL → PIT
St. Louis → Puerto Vallarta
STL → PVR
St. Louis → Punta Cana
STL → PUJ
St. Louis → Quincy
STL → UIN
St. Louis → Raleigh
STL → RDU
St. Louis → Salt Lake City
STL → SLC
St. Louis → San Antonio
STL → SAT
St. Louis → San Diego
STL → SAN
St. Louis → San Francisco
STL → SFO
St. Louis → Seattle
STL → SEA
St. Louis → Tampa
STL → TPA
St. Louis → Toronto
STL → YYZ
St. Louis → Tulsa
STL → TUL
St. Louis → Washington DC
STL → DCA
❓ Frequently asked questions — Pittsburgh International Airport to St. Louis flights

Generally yes — fares on most routes are most competitive around 4–6 weeks before departure. Booking earlier usually means better availability and a lower base fare when your dates are fixed.

The straight-line distance between Pittsburgh International Airport,USA (PIT) and St. Louis,USA (STL) is approximately 889.08 km. Actual flying distance may vary slightly depending on routing.

Non-stop availability on this route varies by airline schedule and season. Use the filters below to quickly check whether direct options are available on your selected date.

Mid-week departures often show lower prices than weekend travel on many routes. Use the date strip above to compare nearby days quickly.