Home›Flights›Pittsburgh International Airport to St. Louis
✦ Smart route search
Pittsburgh International Airport to St. Louis flight ticket price
Compare live prices for PIT to STL. Use the search panel
to change origin, destination, passengers, cabin and trip type instantly.
PIT → STLApprox. 889.08 km08 May 2026Live inventory
✈ Flight Search
Modify your route
From
To
Depart
Return
Adults
Children
Infants
Cabin
Trip Type
PIT→STL
Sort By
💰 Cheapest
⚡ Fastest
🕐 Earliest
🎚️ Filters
Stops Reset
0
0
0
Max Price Reset
Up to ₹5,00,000
Departure Time Reset
🌙 Night 12am–6am
🌅 Morning 6am–12pm
☀️ Afternoon 12pm–6pm
🌆 Evening 6pm–12am
Fare Type
Airlines All
Loading…
Select Fare
—
—
per person · incl. taxes
Stops Reset
0
0
0
Max Price Reset
Up to ₹5,00,000
Departure Time Reset
🌙 Night 12am–6am
🌅 Morning 6am–12pm
☀️ Afternoon 12pm–6pm
🌆 Evening 6pm–12am
Fare Type
Airlines All
Loading…
Showing 25
of 117
live flights
Southwest Airlines
WN-4639
06:55
05/08/2026
PIT
Pittsburgh International Airport
0h 50m
Non-stop
07:45
05/08/2026
STL
St Louis Lambert International Airport
₹14,058
per person
✕ Non-refundable6 fare options
Delta Air Lines
DL-5319
06:30
05/08/2026
PIT
Pittsburgh International Airport
2h 59m
1 Stop
⏱ DTW · 1h 9mDTW Airport
09:29
05/08/2026
STL
St Louis Lambert International Airport
₹14,182
per person
✕ Non-refundable2 fare options
Delta Air Lines
DL-5855
17:59
05/08/2026
PIT
Pittsburgh International Airport
3h 10m
1 Stop
⏱ DTW · 1h 22mDTW Airport
21:09
05/08/2026
STL
St Louis Lambert International Airport
₹14,182
per person
✕ Non-refundable2 fare options
Delta Air Lines
DL-1568
18:25
05/08/2026
PIT
Pittsburgh International Airport
3h 13m
1 Stop
⏱ ATL · 0h 42mATL Airport
21:38
05/08/2026
STL
St Louis Lambert International Airport
₹14,182
per person
✕ Non-refundable2 fare options
Delta Air Lines
DL-3122
19:50
05/08/2026
PIT
Pittsburgh International Airport
4h 9m
1 Stop
⏱ ATL · 1h 25mATL Airport
23:59
05/08/2026
STL
St Louis Lambert International Airport
₹14,182
per person
✕ Non-refundable2 fare options
Delta Air Lines
DL-1363
12:01
05/08/2026
PIT
Pittsburgh International Airport
4h 14m
1 Stop
⏱ ATL · 1h 50mATL Airport
16:15
05/08/2026
STL
St Louis Lambert International Airport
₹14,182
per person
✕ Non-refundable2 fare options
American Airlines
AA-3148
19:11
05/08/2026
PIT
Pittsburgh International Airport
3h 8m
1 Stop
⏱ ORD · 0h 50mORD Airport
22:19
05/08/2026
STL
St Louis Lambert International Airport
₹14,182
per person
✕ Non-refundable14 fare options
American Airlines
AA-3148
19:11
05/08/2026
PIT
Pittsburgh International Airport
4h 45m
1 Stop
⏱ ORD · 2h 35mORD Airport
23:56
05/08/2026
STL
St Louis Lambert International Airport
₹14,182
per person
✕ Non-refundable14 fare options
American Airlines
AA-4481
11:35
05/08/2026
PIT
Pittsburgh International Airport
5h 6m
1 Stop
⏱ ORD · 2h 50mORD Airport
16:41
05/08/2026
STL
St Louis Lambert International Airport
₹14,182
per person
✕ Non-refundable14 fare options
American Airlines
AA-4401
06:54
05/08/2026
PIT
Pittsburgh International Airport
4h 19m
1 Stop
⏱ LGA · 0h 48mLGA Airport
11:13
05/08/2026
STL
St Louis Lambert International Airport
₹14,182
per person
✕ Non-refundable14 fare options
Delta Air Lines
DL-1504
05:40
05/08/2026
PIT
Pittsburgh International Airport
4h 4m
1 Stop
⏱ ATL · 1h 40mATL Airport
09:44
05/08/2026
STL
St Louis Lambert International Airport
₹14,182
per person
✕ Non-refundable
Delta Air Lines
DL-1345
13:40
05/08/2026
PIT
Pittsburgh International Airport
4h 16m
1 Stop
⏱ ATL · 1h 48mATL Airport
17:56
05/08/2026
STL
St Louis Lambert International Airport
₹14,182
per person
✕ Non-refundable
Delta Air Lines
DL-1353
16:45
05/08/2026
PIT
Pittsburgh International Airport
4h 53m
1 Stop
⏱ ATL · 2h 27mATL Airport
21:38
05/08/2026
STL
St Louis Lambert International Airport
₹14,182
per person
✕ Non-refundable
Delta Air Lines
DL-1568
18:25
05/08/2026
PIT
Pittsburgh International Airport
5h 34m
1 Stop
⏱ ATL · 2h 56mATL Airport
23:59
05/08/2026
STL
St Louis Lambert International Airport
₹14,182
per person
✕ Non-refundable
American Airlines
AA-4377
06:12
05/08/2026
PIT
Pittsburgh International Airport
5h 35m
1 Stop
⏱ ORD · 3h 15mORD Airport
11:47
05/08/2026
STL
St Louis Lambert International Airport
₹14,182
per person
✕ Non-refundable13 fare options
Delta Air Lines
DL-1380
10:07
05/08/2026
PIT
Pittsburgh International Airport
6h 8m
1 Stop
⏱ ATL · 3h 35mATL Airport
16:15
05/08/2026
STL
St Louis Lambert International Airport
₹14,182
per person
✕ Non-refundable
American Airlines
AA-4636
08:24
05/08/2026
PIT
Pittsburgh International Airport
4h 24m
1 Stop
⏱ PHL · 1h 21mPHL Airport
12:48
05/08/2026
STL
St Louis Lambert International Airport
₹14,644
per person
✕ Non-refundable14 fare options
Southwest Airlines
WN-1360
20:00
05/08/2026
PIT
Pittsburgh International Airport
2h 45m
1 Stop
⏱ MDW · 1h 0mMDW Airport
22:45
05/08/2026
STL
St Louis Lambert International Airport
₹15,149
per person
✕ Non-refundable6 fare options
Southwest Airlines
WN-3940
08:40
05/08/2026
PIT
Pittsburgh International Airport
4h 15m
1 Stop
⏱ MDW · 2h 30mMDW Airport
12:55
05/08/2026
STL
St Louis Lambert International Airport
₹15,149
per person
✕ Non-refundable6 fare options
Southwest Airlines
WN-1556
20:10
05/08/2026
PIT
Pittsburgh International Airport
3h 5m
1 Stop
⏱ BNA · 1h 5mBNA Airport
23:15
05/08/2026
STL
St Louis Lambert International Airport
₹15,149
per person
✕ Non-refundable6 fare options
Southwest Airlines
WN-2554
05:45
05/08/2026
PIT
Pittsburgh International Airport
5h 5m
1 Stop
⏱ BWI · 2h 35mBWI Airport
10:50
05/08/2026
STL
St Louis Lambert International Airport
₹15,149
per person
✕ Non-refundable6 fare options
Southwest Airlines
WN-3934
18:50
05/08/2026
PIT
Pittsburgh International Airport
5h 5m
1 Stop
⏱ HOU · 1h 0mHOU Airport
23:55
05/08/2026
STL
St Louis Lambert International Airport
₹15,149
per person
✕ Non-refundable6 fare options
Southwest Airlines
WN-3913
09:25
05/08/2026
PIT
Pittsburgh International Airport
5h 30m
1 Stop
⏱ ATL · 3h 0mATL Airport
14:55
05/08/2026
STL
St Louis Lambert International Airport
₹15,149
per person
✕ Non-refundable🔥 Last 4 seats6 fare options
Southwest Airlines
WN-1348
13:35
05/08/2026
PIT
Pittsburgh International Airport
5h 20m
1 Stop
⏱ MDW · 3h 35mMDW Airport
18:55
05/08/2026
STL
St Louis Lambert International Airport
₹15,149
per person
✕ Non-refundable5 fare options
Southwest Airlines
WN-1313
18:45
05/08/2026
PIT
Pittsburgh International Airport
4h 55m
1 Stop
⏱ MCO · 0h 50mMCO Airport
23:40
05/08/2026
STL
St Louis Lambert International Airport
₹15,149
per person
✕ Non-refundable5 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 08 May 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.
Before you book
Compare nearby dates
The date strip above lets you scan nearby fares without restarting the search.
Open full search for more control
Route page shows a limited live set. Full search opens the complete inventory with fresh results.
Check fare details
Each result shows baggage, refundability and fare details before you proceed.
More flights from Pittsburgh International Airport (PIT)
❓ 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.