$232+ Cheap flights from Harrisburg to St. Louis (MDT - STL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
MDT — STL
Oct 29 — Nov 51
Round-trip
1 adult, Economy
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Find cheap flights from Harrisburg 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.Cheap flight deals from Harrisburg to St. Louis
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One-way
Cheapest flights from Harrisburg to St. LouisExplore the most affordable flight options available from Harrisburg to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 29, 2026.
Explore the most affordable flight options available from Harrisburg to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 29, 2026.
This Delta deal was found by Cheapflights users on 9/27. 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 10/276:13 am -
1 stop4h 36m
Tue 11/36:47 am -
1 stop3h 46m
Deal found 9/27![Delta logo]()
$321
This American Airlines deal was found by Cheapflights users on 9/29. 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.
Tue 10/278:22 am -
1 stop7h 16m
Tue 11/36:00 am -
1 stop6h 34m
Deal found 9/29![American Airlines logo]()
$329
This American Airlines deal was found by Cheapflights users on 9/29. 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.
Fri 11/207:55 pm -
1 stop4h 59m
Tue 11/2411:14 am -
1 stop7h 11m
Deal found 9/29![American Airlines logo]()
$330
This United Airlines deal was found by Cheapflights users on 9/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:54 pm -
1 stop4h 27m
Fri 10/301:08 pm -
1 stop4h 49m
Deal found 9/25![United Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 9/26. 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.
Mon 12/286:10 am -
1 stop4h 55m
Sat 1/26:20 am -
1 stop4h 42m
Deal found 9/26![Delta logo]()
$350
This American Airlines deal was found by Cheapflights users on 9/25. 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 10/106:00 am -
1 stop7h 35m
Wed 10/145:00 am -
1 stop5h 19m
Deal found 9/25![American Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 9/26. 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 12/236:10 am -
1 stop4h 55m
Tue 12/296:21 pm -
1 stop3h 54m
Deal found 9/26![Delta logo]()
$370
This Delta deal was found by Cheapflights users on 9/26. 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 12/236:10 am -
1 stop4h 55m
Mon 12/286:21 pm -
1 stop3h 54m
Deal found 9/26![Delta logo]()
$379
This Delta deal was found by Cheapflights users on 9/26. 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 12/236:10 am -
1 stop4h 55m
Sat 1/26:20 am -
1 stop4h 42m
Deal found 9/26![Delta logo]()
$390
This American Airlines deal was found by Cheapflights users on 9/29. 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 10/86:08 am -
1 stop5h 42m
Tue 10/136:00 am -
1 stop7h 10m
Deal found 9/29![American Airlines logo]()
$399
This American Airlines deal was found by Cheapflights users on 9/28. 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 12/246:11 am -
1 stop9h 21m
Thu 1/71:45 pm -
1 stop5h 07m
Deal found 9/28![American Airlines logo]()
$402
This Delta deal was found by Cheapflights users on 9/26. 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 12/256:10 am -
2 stops16h 31m
Tue 12/296:21 pm -
1 stop3h 54m
Deal found 9/26![Delta logo]()
$405
Best flights from Harrisburg to St. LouisDiscover carefully curated flight deals from Harrisburg to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 29, 2026.
Discover carefully curated flight deals from Harrisburg to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 29, 2026.
This American Airlines deal was found by Cheapflights users on 9/29. 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.
Fri 10/168:09 pm -
1 stop5h 10m
Mon 10/195:00 am -
1 stop5h 19m
Deal found 9/29![American Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 9/26. 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 12/236:10 am -
1 stop4h 55m
Mon 12/286:21 pm -
1 stop3h 54m
Deal found 9/26![Delta logo]()
$379
This United Airlines deal was found by Cheapflights users on 9/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/266:00 am -
1 stop5h 42m
Thu 12/311:13 pm -
1 stop7h 02m
Deal found 9/26![United Airlines logo]()
$498
This Delta deal was found by Cheapflights users on 9/26. 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 12/256:10 am -
2 stops16h 31m
Thu 12/311:00 pm -
1 stop5h 16m
Deal found 9/26![Delta logo]()
$414
This Delta deal was found by Cheapflights users on 9/26. 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 12/256:10 am -
2 stops16h 31m
Sat 1/26:20 am -
1 stop4h 42m
Deal found 9/26![Delta logo]()
$425
This United Airlines deal was found by Cheapflights users on 9/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/410:35 am -
2 stops9h 48m
Tue 2/99:22 am -
1 stop6h 36m
Deal found 9/26![United Airlines logo]()
$628
This United Airlines deal was found by Cheapflights users on 9/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/310:35 am -
2 stops11h 37m
Sun 3/73:21 pm -
1 stop4h 59m
Deal found 9/25![United Airlines logo]()
$651
This United Airlines deal was found by Cheapflights users on 9/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/258:15 am -
1 stop7h 20m
Sun 11/297:30 am -
1 stop4h 54m
Deal found 9/27![United Airlines logo]()
$662
This Delta deal was found by Cheapflights users on 9/27. 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 10/146:13 am -
1 stop4h 36m
Fri 10/165:35 pm -
1 stop5h 04m
Deal found 9/27![Delta logo]()
$732
Last-minute flights from Harrisburg to St. LouisDiscover last-minute flight deals from Harrisburg to St. Louis. Data last updated September 29, 2026 and is based on user searches.
Discover last-minute flight deals from Harrisburg to St. Louis. Data last updated September 29, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/25. 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 10/16:00 am -
1 stop5h 18m
Sat 10/31:25 pm -
1 stop6h 50m
Deal found 9/25![American Airlines logo]()
$443
This American Airlines deal was found by Cheapflights users on 9/29. 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 10/16:00 am -
1 stop5h 18m
Sun 10/45:45 pm -
1 stop4h 26m
Deal found 9/29![American Airlines logo]()
$459
This United Airlines deal was found by Cheapflights users on 9/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/56:30 am -
1 stop6h 43m
Sat 10/106:00 am -
1 stop6h 27m
Deal found 9/29![United Airlines logo]()
$543
This American Airlines deal was found by Cheapflights users on 9/29. 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 10/86:08 am -
1 stop5h 42m
Tue 10/136:00 am -
1 stop7h 10m
Deal found 9/29![American Airlines logo]()
$399
This American Airlines deal was found by Cheapflights users on 9/25. 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 10/106:00 am -
1 stop7h 35m
Wed 10/145:00 am -
1 stop5h 19m
Deal found 9/25![American Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 9/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:30 am -
1 stop6h 43m
Sat 10/172:56 pm -
1 stop6h 05m
Deal found 9/28![United Airlines logo]()
$469
This United Airlines deal was found by Cheapflights users on 9/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:54 pm -
1 stop4h 27m
Fri 10/301:08 pm -
1 stop4h 49m
Deal found 9/25![United Airlines logo]()
$339
This American Airlines deal was found by Cheapflights users on 9/29. 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.
Mon 10/268:09 pm -
1 stop5h 10m
Thu 10/291:30 pm -
1 stop5h 07m
Deal found 9/29![American Airlines logo]()
$567
This Delta deal was found by Cheapflights users on 9/27. 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 10/276:13 am -
1 stop4h 36m
Tue 11/36:47 am -
1 stop3h 46m
Deal found 9/27![Delta logo]()
$321
This American Airlines deal was found by Cheapflights users on 9/29. 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.
Tue 10/278:22 am -
1 stop7h 16m
Tue 11/36:00 am -
1 stop6h 34m
Deal found 9/29![American Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 9/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/278:15 am -
1 stop4h 55m
Tue 11/37:30 am -
2 stops10h 06m
Deal found 9/27![United Airlines logo]()
$523
This United Airlines deal was found by Cheapflights users on 9/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:15 am -
1 stop4h 55m
Thu 11/51:08 pm -
1 stop4h 49m
Deal found 9/28![United Airlines logo]()
$439
One-way flights from Harrisburg to St. LouisSearch for one-way flight options from Harrisburg to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 29, 2026.
Search for one-way flight options from Harrisburg to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/27. 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 11/2511:03 am -
2 stops27h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Multiple Airlines logo]()
$232
This American Airlines deal was found by Cheapflights users on 9/27. 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.
Wed 10/217:06 pm -
1 stop4h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![American Airlines logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 9/25. 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.
Fri 10/94:08 pm -
2 stops27h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Multiple Airlines logo]()
$321
This Kiwi.com deal was found by Cheapflights users on 9/25. 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 10/72:09 pm -
3 stops48h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Multiple Airlines logo]()
$354
This Delta deal was found by Cheapflights users on 9/25. 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 10/75:10 pm -
1 stop4h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Delta logo]()
$364
This Kiwi.com deal was found by Cheapflights users on 9/27. 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 10/214:41 pm -
3 stops31h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Multiple Airlines logo]()
$366
This United Airlines deal was found by Cheapflights users on 9/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:30 am -
1 stop6h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![United Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 9/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/55:54 pm -
1 stop4h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![United Airlines logo]()
$423
This United Airlines deal was found by Cheapflights users on 9/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2710:30 am -
2 stops9h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![United Airlines logo]()
$485
This Kiwi.com deal was found by Cheapflights users on 9/27. 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 10/53:38 pm -
3 stops46h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Multiple Airlines logo]()
$611
Find flight deals from Harrisburg to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Harrisburg (MDT) 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 September 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $321 (American Airlines) |
One-way from | $232 (Kiwi.com) |
Popular in | August |
Cheapest in | January |
Average price | $398 |
Cheapflights Fare Finder
Customize your flight search to find flights from Harrisburg 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 7,457,451 searches. Data last updated September 29, 2026.
Use the filters below to find and compare flights from Harrisburg to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
HarrisburgSt. Louis
MDT Harrisburg - STL Lambert-St Louis
MDTSTL
Harrisburg
Fri 11/20
6:15 am-12:51 pm
1 stop7h 36m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$284
HarrisburgSt. Louis
MDT Harrisburg - STL Lambert-St Louis
MDTSTL
Harrisburg
Wed 11/25
10:42 am-3:43 pm
1 stop6h 01m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$284
Quickest round-trip
HarrisburgSt. Louis
MDT Harrisburg - STL Lambert-St Louis
MDTSTL
Harrisburg
Wed 10/21
7:06 pm-10:14 pm
1 stop4h 08m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$284
HarrisburgSt. Louis
MDT Harrisburg - STL Lambert-St Louis
MDTSTL
Harrisburg
Fri 10/9
4:08 pm-6:57 pm
2 stops27h 49m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$321
HarrisburgSt. Louis
MDT Harrisburg - STL Lambert-St Louis
MDTSTL
Harrisburg
Wed 10/7
2:09 pm-1:21 pm
3 stops48h 12m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$354
HarrisburgSt. Louis
MDT Harrisburg - STL Lambert-St Louis
MDTSTL
Harrisburg
Wed 10/7
5:10 pm-8:51 pm
1 stop4h 41m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$364
HarrisburgSt. Louis
MDT Harrisburg - STL Lambert-St Louis
MDTSTL
Harrisburg
Fri 10/9
6:30 am-12:13 pm
1 stop6h 43m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$369
HarrisburgSt. Louis
MDT Harrisburg - STL Lambert-St Louis
MDTSTL
Harrisburg
Fri 10/16
8:09 pm-12:19 am
1 stop5h 10m
Lambert-St Louis
Mon 10/19
5:00 am-11:19 am
1 stop5h 19m
$369
HarrisburgSt. Louis
MDT Harrisburg - STL Lambert-St Louis
MDTSTL
Harrisburg
Wed 12/23
6:10 am-10:05 am
1 stop4h 55m
Lambert-St Louis
Mon 12/28
6:21 pm-11:15 pm
1 stop3h 54m
$379
HarrisburgSt. Louis
MDT Harrisburg - STL Lambert-St Louis
MDTSTL
Harrisburg
Wed 11/25
11:03 am-4:20 pm
3 stops30h 17m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$389
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Harrisburg 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 Harrisburg to St. Louis in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Harrisburg-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Harrisburg-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Harrisburg-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Harrisburg-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 Harrisburg-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 Harrisburg to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Harrisburg with our price prediction graph.
MDT-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 Harrisburg to St. Louis
What is the cheapest month to book a flight from Harrisburg to St. Louis?
Currently, January is the cheapest month in which you can book a flight from Harrisburg to St. Louis (average of $304). Flying from Harrisburg to St. Louis in August is currently the most expensive (average of $708). 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.
How much does it cost to fly round-trip from Harrisburg to St. Louis?
Airfare is typical for this route at the moment.
Harrisburg to St. Louis flights typically cost between $308 and $398 in October.The cheapest round-trip price found within the last 5 days was $321 on Delta (Oct 27-Nov 3).
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 September 29, 2026.
Peruse reviews from past customers who have flown with Delta,United Airlines, andAmerican Airlines from Harrisburg to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Food
7.2
Overall
7.8
Crew
8.5
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Boarding
8.1
Food
7.2
Overall
7.8
Crew
8.5
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Boarding
8.1
Food
7.2
Overall
7.8
Crew
8.5
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Boarding
8.1
Food
7.2
Overall
7.8
Crew
8.5
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Related info for your journey
Find useful and relevant information for your journey from Harrisburg 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 locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Wentzville
Chesterfield
Maryland Heights
Collinsville
Edwardsville
Glencoe
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Top 3 airlines flying from Harrisburg to St. Louis
Discover the top 3 airlines that operate flights from Harrisburg 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 7,457,451 searches. Data last updated September 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$268 | Average$462 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$268 | Average$393 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$287 | Average$398 | FlexibilityNo cancel fee | On-timeN/A |