$69+ Cheap flights from Pittsburgh to St. Louis (PIT - STL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
PIT — STL
Mar 6 — Mar 131
1 adult, Economy
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Find cheap flights from Pittsburgh to St. Louis with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Pittsburgh to Lambert-St Louis are usually found in April or November, booked 29 days in advance, depart on a Wednesday or Thursday and return on a Wednesday
Cheap flight deals from Pittsburgh to St. Louis
Cheapest
Best
Last-minute
One-way
Cheapest flights from Pittsburgh to St. LouisExplore the most affordable flight options available from Pittsburgh to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.
Explore the most affordable flight options available from Pittsburgh to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/245:45 pm
PIT
- STL
1 stop29h 42m
Multiple Airlines
Sat 2/283:49 pm
STL
- PIT
1 stop6h 36m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/246:00 am
PIT
- STL
2 stops25h 51m
Multiple Airlines
Wed 2/253:49 pm
STL
- PIT
1 stop6h 36m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/199:09 pm
PIT
- STL
2 stops34h 42m
Multiple Airlines
Tue 2/243:49 pm
STL
- PIT
1 stop6h 36m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$190
This Delta deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/236:30 am
PIT
- STL
1 stop4h 12m
Delta
Sun 4/266:50 pm
STL
- PIT
1 stop4h 50m
Delta
Deal found 2/4![Delta logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/245:45 pm
PIT
- STL
1 stop29h 42m
Multiple Airlines
Sun 3/13:49 pm
STL
- PIT
1 stop20h 35m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$203
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2011:48 am
PIT
- STL
1 stop6h 54m
Delta
Sat 2/285:50 pm
STL
- PIT
1 stop3h 47m
Delta
Deal found 2/3![Delta logo]()
$205
This Southwest deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/78:40 am
PIT
- STL
1 stop5h 15m
Southwest
Mon 5/115:00 am
STL
- PIT
1 stop6h 00m
Southwest
Deal found 2/1![Southwest logo]()
$213
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/226:00 am
PIT
- STL
2 stops25h 51m
Multiple Airlines
Tue 2/243:49 pm
STL
- PIT
1 stop6h 36m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$217
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/199:09 pm
PIT
- STL
2 stops34h 42m
Multiple Airlines
Wed 2/253:49 pm
STL
- PIT
1 stop6h 36m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/246:00 am
PIT
- STL
2 stops25h 51m
Multiple Airlines
Fri 2/273:49 pm
STL
- PIT
1 stop6h 36m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$227
Best flights from Pittsburgh to St. LouisDiscover carefully curated flight deals from Pittsburgh to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 4, 2026.
Discover carefully curated flight deals from Pittsburgh to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 4, 2026.
This Delta deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/236:30 am
PIT
- STL
1 stop4h 12m
Delta
Sun 4/266:50 pm
STL
- PIT
1 stop4h 50m
Delta
Deal found 2/4![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/78:40 am
PIT
- STL
1 stop5h 15m
Southwest
Mon 5/115:00 am
STL
- PIT
1 stop6h 00m
Southwest
Deal found 2/1![Southwest logo]()
$213
This Delta deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/256:30 am
PIT
- STL
1 stop4h 18m
Delta
Sun 4/266:50 pm
STL
- PIT
1 stop4h 50m
Delta
Deal found 2/4![Delta logo]()
$197
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/76:29 pm
PIT
- STL
1 stop6h 30m
Delta
Sun 5/106:40 am
STL
- PIT
1 stop3h 33m
Delta
Deal found 2/3![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:05 am
PIT
- STL
2 stops7h 55m
Southwest
Mon 5/113:25 pm
STL
- PIT
1 stop6h 55m
Southwest
Deal found 2/1![Southwest logo]()
$218
This Delta deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/246:30 am
PIT
- STL
1 stop4h 12m
Delta
Mon 4/276:50 pm
STL
- PIT
1 stop4h 41m
Delta
Deal found 2/4![Delta logo]()
$197
This Delta deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/256:30 am
PIT
- STL
1 stop4h 18m
Delta
Mon 4/275:59 pm
STL
- PIT
1 stop3h 57m
Delta
Deal found 2/4![Delta logo]()
$197
This Delta deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/246:19 am
PIT
- STL
1 stop4h 13m
Delta
Sat 2/285:50 pm
STL
- PIT
1 stop3h 47m
Delta
Deal found 2/4![Delta logo]()
$205
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:30 am
PIT
- STL
1 stop4h 12m
Delta
Mon 5/117:09 pm
STL
- PIT
1 stop4h 36m
Delta
Deal found 2/1![Delta logo]()
$213
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/67:46 pm
PIT
- STL
1 stop4h 48m
Delta
Mon 5/111:50 pm
STL
- PIT
1 stop4h 04m
Delta
Deal found 2/1![Delta logo]()
$213
This Delta deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:29 pm
PIT
- STL
1 stop6h 30m
Delta
Mon 5/111:50 pm
STL
- PIT
1 stop4h 04m
Delta
Deal found 2/4![Delta logo]()
$272
Last-minute flights from Pittsburgh to St. LouisDiscover last-minute flight deals from Pittsburgh to St. Louis. Data last updated February 4, 2026 and is based on user searches.
Discover last-minute flight deals from Pittsburgh to St. Louis. Data last updated February 4, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/141:26 pm
PIT
- STL
1 stop7h 04m
American Airlines
Tue 2/172:06 pm
STL
- PIT
1 stop5h 42m
American Airlines
Deal found 2/3![American Airlines logo]()
$231
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/199:09 pm
PIT
- STL
2 stops34h 42m
Multiple Airlines
Tue 2/243:49 pm
STL
- PIT
1 stop6h 36m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/199:09 pm
PIT
- STL
2 stops34h 42m
Multiple Airlines
Wed 2/253:49 pm
STL
- PIT
1 stop6h 36m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/199:09 pm
PIT
- STL
2 stops34h 42m
Multiple Airlines
Sat 2/283:49 pm
STL
- PIT
1 stop6h 36m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$229
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/205:56 pm
PIT
- STL
1 stop3h 47m
Delta
Wed 2/257:10 am
STL
- PIT
1 stop4h 26m
Delta
Deal found 2/3![Delta logo]()
$205
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/226:00 am
PIT
- STL
2 stops25h 51m
Multiple Airlines
Tue 2/243:49 pm
STL
- PIT
1 stop6h 36m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$217
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/245:45 pm
PIT
- STL
1 stop29h 42m
Multiple Airlines
Sat 2/283:49 pm
STL
- PIT
1 stop6h 36m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/246:00 am
PIT
- STL
2 stops25h 51m
Multiple Airlines
Wed 2/253:49 pm
STL
- PIT
1 stop6h 36m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/245:45 pm
PIT
- STL
1 stop29h 42m
Multiple Airlines
Sun 3/13:49 pm
STL
- PIT
1 stop20h 35m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$203
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/246:00 am
PIT
- STL
2 stops25h 51m
Multiple Airlines
Fri 2/273:49 pm
STL
- PIT
1 stop6h 36m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$227
One-way flights from Pittsburgh to St. LouisSearch for one-way flight options from Pittsburgh to St. Louis. Find affordable one-way fares based on user searches. Data last updated February 4, 2026.
Search for one-way flight options from Pittsburgh to St. Louis. Find affordable one-way fares based on user searches. Data last updated February 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/36:22 pm
PIT
- STL
1 stop29h 05m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/45:45 am
PIT
- STL
1 stop17h 42m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$96
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/128:59 am
PIT
- STL
1 stop6h 57m
American Airlines
Deal found 2/3![American Airlines logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/22:19 pm
PIT
- STL
2 stops41h 32m
Frontier
Deal found 2/2![Frontier logo]()
$104
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:30 am
PIT
- STL
1 stop4h 16m
Delta
Deal found 2/3![Delta logo]()
$107
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/176:00 am
PIT
- STL
2 stops25h 51m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$110
This Southwest deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/15:15 am
PIT
- STL
2 stops7h 55m
Southwest
Deal found 2/1![Southwest logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/2310:45 am
PIT
- STL
2 stops24h 47m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/169:09 pm
PIT
- STL
2 stops34h 42m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/186:00 am
PIT
- STL
3 stops42h 59m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$133
Find flight deals from Pittsburgh to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Pittsburgh (PIT) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $181 (Kiwi.com) |
One-way from | $69 (Kiwi.com) |
Popular in | January |
Cheapest in | April |
Average price | $321 |
Good round-trip deal | $343 or less |
Good one-way deal | $171 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Pittsburgh to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
Use the filters below to find and compare flights from Pittsburgh to St. Louis that are best for you.
Fly from
Pittsburgh
Fly to
St. Louis
Route
Depart
Return
Price
PittsburghSt. Louis
PIT - STL
PITSTL
Pittsburgh
Thu 4/23
6:30 am-9:42 am
1 stop4h 12m
Lambert-St Louis
Sun 4/26
6:50 pm-12:40 am
1 stop4h 50m
$197
PittsburghSt. Louis
PIT - STL
PITSTL
Pittsburgh
Sat 4/25
6:30 am-9:48 am
1 stop4h 18m
Lambert-St Louis
Sun 4/26
6:50 pm-12:40 am
1 stop4h 50m
$197
PittsburghSt. Louis
PIT - STL
PITSTL
Pittsburgh
Thu 5/7
6:29 pm-11:59 pm
1 stop6h 30m
Lambert-St Louis
Sun 5/10
6:40 am-11:13 am
1 stop3h 33m
$197
PittsburghSt. Louis
PIT - STL
PITSTL
Pittsburgh
Fri 4/24
6:30 am-9:42 am
1 stop4h 12m
Lambert-St Louis
Mon 4/27
6:50 pm-12:31 am
1 stop4h 41m
$197
PittsburghSt. Louis
PIT - STL
PITSTL
Pittsburgh
Sat 4/25
6:30 am-9:48 am
1 stop4h 18m
Lambert-St Louis
Mon 4/27
5:59 pm-10:56 pm
1 stop3h 57m
$197
PittsburghSt. Louis
PIT - STL
PITSTL
Pittsburgh
Tue 2/24
6:19 am-9:32 am
1 stop4h 13m
Lambert-St Louis
Sat 2/28
5:50 pm-10:37 pm
1 stop3h 47m
$205
PittsburghSt. Louis
PIT - STL
PITSTL
Pittsburgh
Thu 5/7
8:40 am-12:55 pm
1 stop5h 15m
Lambert-St Louis
Mon 5/11
5:00 am-12:00 pm
1 stop6h 00m
$213
PittsburghSt. Louis
PIT - STL
PITSTL
Pittsburgh
Tue 5/5
6:30 am-9:42 am
1 stop4h 12m
Lambert-St Louis
Mon 5/11
7:09 pm-12:45 am
1 stop4h 36m
$213
PittsburghSt. Louis
PIT - STL
PITSTL
Pittsburgh
Wed 5/6
7:46 pm-11:34 pm
1 stop4h 48m
Lambert-St Louis
Mon 5/11
1:50 pm-6:54 pm
1 stop4h 04m
$213
PittsburghSt. Louis
PIT - STL
PITSTL
Pittsburgh
Wed 5/6
6:05 am-1:00 pm
2 stops7h 55m
Lambert-St Louis
Mon 5/11
3:25 pm-11:20 pm
1 stop6h 55m
$218
Showing 1-10 of 20 results
Compare providers for flights from Pittsburgh to St. Louis
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Pittsburgh to St. Louis in February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Pittsburgh-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Pittsburgh-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Pittsburgh-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Pittsburgh-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Pittsburgh-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Pittsburgh to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Pittsburgh with our price prediction graph.
PIT-STL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Pittsburgh to St. Louis
How far ahead should I book a flight from Pittsburgh to St. Louis?
Use this chart to determine the optimal time to book a round-trip flight from Pittsburgh to St. Louis. Price data was last updated on January 30, 2026.
Booking 29 days in advance of your planned departure date is, on average, the best time to get cheap flights from Pittsburgh to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Pittsburgh to St. Louis?
Currently, November is the cheapest month in which you can book a flight from Pittsburgh to St. Louis (average of $156). Flying from Pittsburgh to St. Louis in July is currently the most expensive (average of $269). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from PIT to STL?
Find hourly flight availability from Pittsburgh to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 4, 2026.
A simple way to save on the total cost of your ticket is to fly from Pittsburgh to St. Louis at noon. If you’re flexible enough to do this you can expect to save up to 28% on your trip compared to booking a flight in the morning.
Reviews of airlines servicing St. Louis
Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated February 4, 2026.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Pittsburgh to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Pittsburgh to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus
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Pittsburgh and St. Louis flights
Browse other Pittsburgh and St. Louis flight options. Last updated on February 4, 2026.
Other flights from Pittsburgh
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Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on February 4, 2026.
Top 4 airlines flying from Pittsburgh to St. Louis
Discover the top 4 airlines that operate flights from Pittsburgh to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$170 | Average$366 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$241 | Average$341 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$258 | Average$338 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$295 | Average$392 | FlexibilityNo cancel fee | On-time69% |