$175+ Cheap flights from Harrisburg to St. Louis (MDT - 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 3/16. Fares are subject to change and may not be available on all flights or dates of travel.
MDT — STL
Apr 9 — Apr 161
Round-trip
1 adult, Economy
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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 March 10, 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 March 10, 2026.
This Frontier deal was found by Cheapflights users on 3/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2610:13 pm
MDT
- STL
1 stop9h 49m
Frontier
Wed 4/14:54 pm
STL
- MDT
1 stop27h 17m
Frontier
Deal found 3/9![Frontier logo]()
$226
This Frontier deal was found by Cheapflights users on 3/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/2210:13 pm
MDT
- STL
1 stop9h 49m
Frontier
Thu 3/268:02 am
STL
- MDT
1 stop12h 26m
Frontier
Deal found 3/7![Frontier logo]()
$270
This Delta deal was found by Cheapflights users on 3/8. 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 5/26:00 am
MDT
- STL
1 stop6h 56m
Delta
Sat 5/910:15 am
STL
- MDT
1 stop5h 02m
Delta
Deal found 3/8![Delta logo]()
$271
This Frontier deal was found by Cheapflights users on 3/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/1510:13 pm
MDT
- STL
1 stop9h 49m
Frontier
Sat 3/217:47 am
STL
- MDT
1 stop12h 36m
Frontier
Deal found 3/6![Frontier logo]()
$275
This Delta deal was found by Cheapflights users on 3/9. 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 9/235:00 pm
MDT
- STL
1 stop4h 31m
Delta
Sun 9/276:00 am
STL
- MDT
1 stop7h 09m
Delta
Deal found 3/9![Delta logo]()
$280
This American Airlines deal was found by Cheapflights users on 3/6. 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 3/316:31 pm
MDT
- STL
1 stop6h 13m
American Airlines
Sat 4/49:15 am
STL
- MDT
1 stop4h 34m
American Airlines
Deal found 3/6![American Airlines logo]()
$289
This Frontier deal was found by Cheapflights users on 3/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/1510:13 pm
MDT
- STL
1 stop9h 49m
Frontier
Thu 3/198:02 am
STL
- MDT
1 stop12h 26m
Frontier
Deal found 3/7![Frontier logo]()
$300
This Delta deal was found by Cheapflights users on 3/7. 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 3/146:10 am
MDT
- STL
1 stop4h 36m
Delta
Wed 3/185:21 pm
STL
- MDT
1 stop5h 20m
Delta
Deal found 3/7![Delta logo]()
$314
This Frontier deal was found by Cheapflights users on 3/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/105:56 pm
MDT
- STL
1 stop6h 23m
Frontier
Thu 3/198:02 am
STL
- MDT
1 stop12h 26m
Frontier
Deal found 3/7![Frontier logo]()
$320
This United Airlines deal was found by Cheapflights users on 3/8. 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 3/105:36 pm
MDT
- STL
1 stop4h 31m
United Airlines
Tue 4/216:55 pm
STL
- MDT
1 stop4h 47m
United Airlines
Deal found 3/8![United Airlines logo]()
$324
This Delta deal was found by Cheapflights users on 3/7. 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 3/101:24 pm
MDT
- STL
1 stop5h 29m
Delta
Wed 3/185:21 pm
STL
- MDT
1 stop5h 20m
Delta
Deal found 3/7![Delta logo]()
$333
This Delta deal was found by Cheapflights users on 3/7. 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 3/176:32 pm
MDT
- STL
1 stop6h 26m
Delta
Thu 3/266:00 am
STL
- MDT
1 stop5h 39m
Delta
Deal found 3/7![Delta logo]()
$334
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 March 10, 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 March 10, 2026.
This United Airlines deal was found by Cheapflights users on 3/7. 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 4/26:15 am
MDT
- STL
1 stop5h 30m
United Airlines
Sat 4/117:45 am
STL
- MDT
1 stop4h 45m
United Airlines
Deal found 3/7![United Airlines logo]()
$280
This Delta deal was found by Cheapflights users on 3/8. 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 7/3012:25 pm
MDT
- STL
1 stop4h 33m
Delta
Sun 8/26:45 am
STL
- MDT
1 stop4h 06m
Delta
Deal found 3/8![Delta logo]()
$289
This United Airlines deal was found by Cheapflights users on 3/7. 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 8/155:53 pm
MDT
- STL
1 stop4h 29m
United Airlines
Sat 8/221:18 pm
STL
- MDT
1 stop5h 12m
United Airlines
Deal found 3/7![United Airlines logo]()
$341
This United Airlines deal was found by Cheapflights users on 3/8. 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 4/245:53 pm
MDT
- STL
1 stop4h 59m
United Airlines
Tue 4/286:55 pm
STL
- MDT
1 stop4h 47m
United Airlines
Deal found 3/8![United Airlines logo]()
$350
This United Airlines deal was found by Cheapflights users on 3/6. 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 4/105:53 pm
MDT
- STL
1 stop4h 20m
United Airlines
Tue 4/147:45 am
STL
- MDT
1 stop4h 48m
United Airlines
Deal found 3/6![United Airlines logo]()
$350
This United Airlines deal was found by Cheapflights users on 3/8. 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 4/245:53 pm
MDT
- STL
1 stop6h 18m
United Airlines
Sun 4/269:10 am
STL
- MDT
1 stop6h 41m
United Airlines
Deal found 3/8![United Airlines logo]()
$359
This United Airlines deal was found by Cheapflights users on 3/5. 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 6/195:50 pm
MDT
- STL
1 stop4h 26m
United Airlines
Fri 6/265:41 pm
STL
- MDT
1 stop5h 49m
United Airlines
Deal found 3/5![United Airlines logo]()
$359
Last-minute flights from Harrisburg to St. LouisDiscover last-minute flight deals from Harrisburg to St. Louis. Data last updated March 10, 2026 and is based on user searches.
Discover last-minute flight deals from Harrisburg to St. Louis. Data last updated March 10, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 3/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/105:56 pm
MDT
- STL
1 stop6h 23m
Frontier
Thu 3/198:02 am
STL
- MDT
1 stop12h 26m
Frontier
Deal found 3/7![Frontier logo]()
$320
This United Airlines deal was found by Cheapflights users on 3/8. 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 3/105:36 pm
MDT
- STL
1 stop4h 31m
United Airlines
Tue 4/216:55 pm
STL
- MDT
1 stop4h 47m
United Airlines
Deal found 3/8![United Airlines logo]()
$324
This Delta deal was found by Cheapflights users on 3/7. 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 3/104:40 pm
MDT
- STL
1 stop5h 02m
Delta
Tue 3/175:21 pm
STL
- MDT
1 stop5h 20m
Delta
Deal found 3/7![Delta logo]()
$333
This United Airlines deal was found by Cheapflights users on 3/7. 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 3/126:15 am
MDT
- STL
1 stop7h 12m
United Airlines
Tue 3/177:40 am
STL
- MDT
1 stop4h 47m
United Airlines
Deal found 3/7![United Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 3/7. 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 3/146:10 am
MDT
- STL
1 stop4h 36m
Delta
Tue 3/1710:12 am
STL
- MDT
1 stop6h 35m
Delta
Deal found 3/7![Delta logo]()
$314
This Frontier deal was found by Cheapflights users on 3/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/1510:13 pm
MDT
- STL
1 stop9h 49m
Frontier
Sat 3/217:47 am
STL
- MDT
1 stop12h 36m
Frontier
Deal found 3/6![Frontier logo]()
$275
This Frontier deal was found by Cheapflights users on 3/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/1510:13 pm
MDT
- STL
1 stop9h 49m
Frontier
Thu 3/198:02 am
STL
- MDT
1 stop12h 26m
Frontier
Deal found 3/7![Frontier logo]()
$300
This Delta deal was found by Cheapflights users on 3/8. 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 3/171:24 pm
MDT
- STL
1 stop5h 29m
Delta
Tue 4/214:41 pm
STL
- MDT
1 stop6h 18m
Delta
Deal found 3/8![Delta logo]()
$280
This Delta deal was found by Cheapflights users on 3/7. 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 3/176:32 pm
MDT
- STL
1 stop6h 26m
Delta
Thu 3/266:00 am
STL
- MDT
1 stop5h 39m
Delta
Deal found 3/7![Delta logo]()
$334
This Frontier deal was found by Cheapflights users on 3/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/2210:13 pm
MDT
- STL
1 stop9h 49m
Frontier
Thu 3/268:02 am
STL
- MDT
1 stop12h 26m
Frontier
Deal found 3/7![Frontier logo]()
$270
This Frontier deal was found by Cheapflights users on 3/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2610:13 pm
MDT
- STL
1 stop9h 49m
Frontier
Wed 4/14:54 pm
STL
- MDT
1 stop27h 17m
Frontier
Deal found 3/9![Frontier logo]()
$226
This American Airlines deal was found by Cheapflights users on 3/6. 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 3/316:31 pm
MDT
- STL
1 stop6h 13m
American Airlines
Sat 4/49:15 am
STL
- MDT
1 stop4h 34m
American Airlines
Deal found 3/6![American Airlines logo]()
$289
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 March 10, 2026.
Search for one-way flight options from Harrisburg to St. Louis. Find affordable one-way fares based on user searches. Data last updated March 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/7. 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 3/166:34 pm
MDT
- STL
2 stops25h 02m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$175
This Delta deal was found by Cheapflights users on 3/5. 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 5/162:00 pm
MDT
- STL
1 stop5h 00m
Delta
Deal found 3/5![Delta logo]()
$247
This American Airlines deal was found by Cheapflights users on 3/9. 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 3/316:00 am
MDT
- STL
1 stop6h 35m
American Airlines
Deal found 3/9![American Airlines logo]()
$259
This American Airlines deal was found by Cheapflights users on 3/9. 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 3/213:34 pm
MDT
- STL
1 stop4h 56m
American Airlines
Deal found 3/9![American Airlines logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 3/316:52 pm
MDT
- STL
3 stops48h 44m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$359
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Sat 3/212:53 pm
MDT
- STL
3 stops52h 09m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$363
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 3/208:06 pm
MDT
- STL
3 stops59h 56m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$385
This Delta deal was found by Cheapflights users on 3/7. 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 3/164:40 pm
MDT
- STL
1 stop5h 02m
Delta
Deal found 3/7![Delta logo]()
$388
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Sat 3/2110:18 pm
MDT
- STL
2 stops36h 31m
Frontier
Deal found 3/9![Frontier logo]()
$404
This United Airlines deal was found by Cheapflights users on 3/6. 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 5/162:40 pm
MDT
- STL
2 stops7h 33m
United Airlines
Deal found 3/6![United Airlines logo]()
$427
This United Airlines deal was found by Cheapflights users on 3/9. 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 3/316:15 am
MDT
- STL
2 stops9h 09m
United Airlines
Deal found 3/9![United Airlines logo]()
$452
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 March 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $226 (Frontier) |
One-way from | $175 (Kiwi.com) |
Popular in | March |
Cheapest in | May |
Average price | $469 |
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 2,558,603 searches. Data last updated March 10, 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 - STL
MDTSTL
Harrisburg
Thu 4/2
6:15 am-10:45 am
1 stop5h 30m
Lambert-St Louis
Sat 4/11
7:45 am-1:30 pm
1 stop4h 45m
$280
Quickest round-trip
HarrisburgSt. Louis
MDT - STL
MDTSTL
Harrisburg
Thu 7/30
12:25 pm-3:58 pm
1 stop4h 33m
Lambert-St Louis
Sun 8/2
6:45 am-11:51 am
1 stop4h 06m
$289
HarrisburgSt. Louis
MDT - STL
MDTSTL
Harrisburg
Sat 8/15
5:53 pm-9:22 pm
1 stop4h 29m
Lambert-St Louis
Sat 8/22
1:18 pm-7:30 pm
1 stop5h 12m
$341
HarrisburgSt. Louis
MDT - STL
MDTSTL
Harrisburg
Fri 4/24
5:53 pm-9:52 pm
1 stop4h 59m
Lambert-St Louis
Tue 4/28
6:55 pm-12:42 am
1 stop4h 47m
$350
HarrisburgSt. Louis
MDT - STL
MDTSTL
Harrisburg
Fri 4/10
5:53 pm-9:13 pm
1 stop4h 20m
Lambert-St Louis
Tue 4/14
7:45 am-1:33 pm
1 stop4h 48m
$350
HarrisburgSt. Louis
MDT - STL
MDTSTL
Harrisburg
Fri 4/24
5:53 pm-11:11 pm
1 stop6h 18m
Lambert-St Louis
Sun 4/26
9:10 am-4:51 pm
1 stop6h 41m
$359
HarrisburgSt. Louis
MDT - STL
MDTSTL
Harrisburg
Fri 6/19
5:50 pm-9:16 pm
1 stop4h 26m
Lambert-St Louis
Fri 6/26
5:41 pm-12:30 am
1 stop5h 49m
$359
Cheapest one-way
HarrisburgSt. Louis
MDT - STL
MDTSTL
Harrisburg
Mon 3/16
5:26 pm-7:37 am
3 stops39h 11m
$234
HarrisburgSt. Louis
MDT - STL
MDTSTL
Harrisburg
Sat 5/16
2:00 pm-6:00 pm
1 stop5h 00m
$247
HarrisburgSt. Louis
MDT - STL
MDTSTL
Harrisburg
Tue 3/31
6:00 am-11:35 am
1 stop6h 35m
$259
Showing 1-10 of 17 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 March.
| 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
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 March 10, 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.
Comfort
7.9
Food
7.2
Boarding
8.1
Overall
7.9
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Food
7.2
Boarding
8.1
Overall
7.9
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Food
7.2
Boarding
8.1
Overall
7.9
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Food
7.2
Boarding
8.1
Overall
7.9
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
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 locationsEdwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus
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Alternative routes for Harrisburg to St. Louis
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Harrisburg and St. Louis flights
Browse other Harrisburg and St. Louis flight options. Last updated on March 10, 2026.
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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 March 10, 2026.
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 2,558,603 searches. Data last updated March 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$248 | Average$432 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$248 | Average$321 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$248 | Average$323 | FlexibilityNo cancel fee | On-timeN/A |