$148+ Cheap flights from St. Louis to Harrisburg (STL - MDT)
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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MDT
Jul 17 — Jul 241
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Harrisburg 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
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Best
Last-minute
One-way
Cheapest flights from St. Louis to HarrisburgExplore the most affordable flight options available from St. Louis to Harrisburg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 17, 2026.
Explore the most affordable flight options available from St. Louis to Harrisburg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 17, 2026.
This Delta deal was found by Cheapflights users on 6/16. 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 7/310:51 am
STL
- MDT
1 stop5h 46m
Delta
Sat 7/412:21 pm
MDT
- STL
1 stop6h 02m
Delta
Deal found 6/16![Delta logo]()
$291
This Delta deal was found by Cheapflights users on 6/16. 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 7/33:57 pm
STL
- MDT
1 stop6h 58m
Delta
Tue 7/76:04 am
MDT
- STL
1 stop4h 39m
Delta
Deal found 6/16![Delta logo]()
$300
This American Airlines deal was found by Cheapflights users on 6/11. 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 7/89:08 am
STL
- MDT
1 stop6h 12m
American Airlines
Sun 7/127:45 pm
MDT
- STL
1 stop5h 31m
American Airlines
Deal found 6/11![American Airlines logo]()
$309
This Delta deal was found by Cheapflights users on 6/16. 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 7/36:00 am
STL
- MDT
1 stop4h 11m
Delta
Sun 7/56:04 am
MDT
- STL
1 stop4h 33m
Delta
Deal found 6/16![Delta logo]()
$315
This Delta deal was found by Cheapflights users on 6/16. 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 10/233:42 pm
STL
- MDT
1 stop6h 56m
Delta
Mon 10/262:56 pm
MDT
- STL
1 stop6h 53m
Delta
Deal found 6/16![Delta logo]()
$334
This United Airlines deal was found by Cheapflights users on 6/16. 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 7/37:20 am
STL
- MDT
1 stop5h 14m
United Airlines
Sun 7/56:30 am
MDT
- STL
1 stop6h 41m
United Airlines
Deal found 6/16![United Airlines logo]()
$357
This American Airlines deal was found by Cheapflights users on 6/15. 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 7/46:14 am
STL
- MDT
1 stop6h 46m
American Airlines
Mon 7/137:38 pm
MDT
- STL
1 stop4h 54m
American Airlines
Deal found 6/15![American Airlines logo]()
$360
This Delta deal was found by Cheapflights users on 6/16. 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 7/33:57 pm
STL
- MDT
1 stop6h 58m
Delta
Mon 7/66:22 pm
MDT
- STL
1 stop6h 34m
Delta
Deal found 6/16![Delta logo]()
$365
This Delta deal was found by Cheapflights users on 6/16. 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 6/236:00 am
STL
- MDT
1 stop4h 11m
Delta
Tue 6/306:04 am
MDT
- STL
1 stop4h 42m
Delta
Deal found 6/16![Delta logo]()
$368
This American Airlines deal was found by Cheapflights users on 6/16. 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 7/169:08 am
STL
- MDT
1 stop6h 12m
American Airlines
Thu 7/237:38 pm
MDT
- STL
1 stop4h 54m
American Airlines
Deal found 6/16![American Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 6/11. 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 9/1912:59 pm
STL
- MDT
1 stop6h 54m
United Airlines
Wed 9/236:30 am
MDT
- STL
1 stop6h 27m
United Airlines
Deal found 6/11![United Airlines logo]()
$371
This American Airlines deal was found by Cheapflights users on 6/13. 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 6/206:15 am
STL
- MDT
1 stop6h 45m
American Airlines
Thu 6/257:08 pm
MDT
- STL
1 stop6h 08m
American Airlines
Deal found 6/13![American Airlines logo]()
$398
Best flights from St. Louis to HarrisburgDiscover carefully curated flight deals from St. Louis to Harrisburg that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 17, 2026.
Discover carefully curated flight deals from St. Louis to Harrisburg that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 17, 2026.
This American Airlines deal was found by Cheapflights users on 6/15. 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 7/46:14 am
STL
- MDT
1 stop6h 46m
American Airlines
Mon 7/137:38 pm
MDT
- STL
1 stop4h 54m
American Airlines
Deal found 6/15![American Airlines logo]()
$360
This United Airlines deal was found by Cheapflights users on 6/13. 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 9/1912:59 pm
STL
- MDT
1 stop6h 54m
United Airlines
Wed 9/235:54 pm
MDT
- STL
1 stop4h 37m
United Airlines
Deal found 6/13![United Airlines logo]()
$371
This Delta deal was found by Cheapflights users on 6/15. 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 9/284:59 pm
STL
- MDT
1 stop5h 41m
Delta
Tue 9/2912:15 pm
MDT
- STL
1 stop5h 55m
Delta
Deal found 6/15![Delta logo]()
$537
This United Airlines deal was found by Cheapflights users on 6/14. 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 8/1812:59 pm
STL
- MDT
1 stop6h 54m
United Airlines
Sat 8/225:54 pm
MDT
- STL
1 stop5h 06m
United Airlines
Deal found 6/14![United Airlines logo]()
$371
This United Airlines deal was found by Cheapflights users on 6/15. 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 7/47:20 am
STL
- MDT
1 stop5h 14m
United Airlines
Mon 7/137:59 pm
MDT
- STL
2 stops13h 40m
United Airlines
Deal found 6/15![United Airlines logo]()
$449
This United Airlines deal was found by Cheapflights users on 6/13. 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 6/2611:25 am
STL
- MDT
1 stop7h 23m
United Airlines
Sat 6/275:55 pm
MDT
- STL
1 stop4h 31m
United Airlines
Deal found 6/13![United Airlines logo]()
$453
Last-minute flights from St. Louis to HarrisburgDiscover last-minute flight deals from St. Louis to Harrisburg. Data last updated June 17, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Harrisburg. Data last updated June 17, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/13. 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 6/206:15 am
STL
- MDT
1 stop6h 45m
American Airlines
Thu 6/257:08 pm
MDT
- STL
1 stop6h 08m
American Airlines
Deal found 6/13![American Airlines logo]()
$398
This Delta deal was found by Cheapflights users on 6/16. 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 6/236:00 am
STL
- MDT
1 stop4h 11m
Delta
Tue 6/306:04 am
MDT
- STL
1 stop4h 42m
Delta
Deal found 6/16![Delta logo]()
$368
This United Airlines deal was found by Cheapflights users on 6/15. 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 6/301:13 pm
STL
- MDT
1 stop5h 35m
United Airlines
Sat 7/410:40 am
MDT
- STL
1 stop6h 06m
United Airlines
Deal found 6/15![United Airlines logo]()
$371
This Delta deal was found by Cheapflights users on 6/16. 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 7/310:51 am
STL
- MDT
1 stop5h 46m
Delta
Sat 7/412:21 pm
MDT
- STL
1 stop6h 02m
Delta
Deal found 6/16![Delta logo]()
$291
This Delta deal was found by Cheapflights users on 6/16. 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 7/33:57 pm
STL
- MDT
1 stop6h 58m
Delta
Tue 7/76:04 am
MDT
- STL
1 stop4h 39m
Delta
Deal found 6/16![Delta logo]()
$300
This Delta deal was found by Cheapflights users on 6/16. 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 7/36:00 am
STL
- MDT
1 stop4h 11m
Delta
Sun 7/56:04 am
MDT
- STL
1 stop4h 33m
Delta
Deal found 6/16![Delta logo]()
$315
This United Airlines deal was found by Cheapflights users on 6/16. 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 7/37:20 am
STL
- MDT
1 stop5h 14m
United Airlines
Sun 7/56:30 am
MDT
- STL
1 stop6h 41m
United Airlines
Deal found 6/16![United Airlines logo]()
$357
This Delta deal was found by Cheapflights users on 6/16. 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 7/33:57 pm
STL
- MDT
1 stop6h 58m
Delta
Mon 7/66:22 pm
MDT
- STL
1 stop6h 34m
Delta
Deal found 6/16![Delta logo]()
$365
This American Airlines deal was found by Cheapflights users on 6/15. 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 7/46:14 am
STL
- MDT
1 stop6h 46m
American Airlines
Mon 7/137:38 pm
MDT
- STL
1 stop4h 54m
American Airlines
Deal found 6/15![American Airlines logo]()
$360
This American Airlines deal was found by Cheapflights users on 6/13. 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 7/65:58 pm
STL
- MDT
1 stop5h 24m
American Airlines
Mon 7/137:38 pm
MDT
- STL
1 stop4h 54m
American Airlines
Deal found 6/13![American Airlines logo]()
$429
This American Airlines deal was found by Cheapflights users on 6/11. 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 7/89:08 am
STL
- MDT
1 stop6h 12m
American Airlines
Sun 7/127:45 pm
MDT
- STL
1 stop5h 31m
American Airlines
Deal found 6/11![American Airlines logo]()
$309
This American Airlines deal was found by Cheapflights users on 6/16. 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 7/169:08 am
STL
- MDT
1 stop6h 12m
American Airlines
Thu 7/237:38 pm
MDT
- STL
1 stop4h 54m
American Airlines
Deal found 6/16![American Airlines logo]()
$369
One-way flights from St. Louis to HarrisburgSearch for one-way flight options from St. Louis to Harrisburg. Find affordable one-way fares based on user searches. Data last updated June 17, 2026.
Search for one-way flight options from St. Louis to Harrisburg. Find affordable one-way fares based on user searches. Data last updated June 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 9/1010:35 am
STL
- MDT
2 stops20h 43m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/162:00 pm
STL
- MDT
2 stops19h 47m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/172:00 pm
STL
- MDT
3 stops23h 20m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$259
This Delta deal was found by Cheapflights users on 6/16. 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 7/167:08 am
STL
- MDT
1 stop6h 02m
Delta
Deal found 6/16![Delta logo]()
$269
This United Airlines deal was found by Cheapflights users on 6/12. 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 6/277:20 am
STL
- MDT
1 stop5h 14m
United Airlines
Deal found 6/12![United Airlines logo]()
$349
This American Airlines deal was found by Cheapflights users on 6/15. 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 10/3010:13 am
STL
- MDT
2 stops9h 20m
American Airlines
Deal found 6/15![American Airlines logo]()
$355
This American Airlines deal was found by Cheapflights users on 6/12. 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.
Sun 6/2111:18 am
STL
- MDT
1 stop6h 44m
American Airlines
Deal found 6/12![American Airlines logo]()
$408
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 6/295:06 pm
STL
- MDT
3 stops40h 49m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$498
Find flight deals from St. Louis to Harrisburg
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Harrisburg (MDT). 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 June 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $291 (Delta) |
One-way from | $148 (Kiwi.com) |
Popular in | May |
Cheapest in | April |
Average price | $368 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Harrisburg 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 June 17, 2026.
Use the filters below to find and compare flights from St. Louis to Harrisburg that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisHarrisburg
STL - MDT
STLMDT
Lambert-St Louis
Sat 7/4
6:14 am-2:00 pm
1 stop6h 46m
Harrisburg
Mon 7/13
7:38 pm-11:32 pm
1 stop4h 54m
$360
Quickest round-trip
St. LouisHarrisburg
STL - MDT
STLMDT
Lambert-St Louis
Sat 9/19
12:59 pm-8:53 pm
1 stop6h 54m
Harrisburg
Wed 9/23
5:54 pm-9:31 pm
1 stop4h 37m
$371
St. LouisHarrisburg
STL - MDT
STLMDT
Lambert-St Louis
Tue 8/18
12:59 pm-8:53 pm
1 stop6h 54m
Harrisburg
Sat 8/22
5:54 pm-10:00 pm
1 stop5h 06m
$371
St. LouisHarrisburg
STL - MDT
STLMDT
Lambert-St Louis
Sat 7/4
7:20 am-1:34 pm
1 stop5h 14m
Harrisburg
Mon 7/13
7:59 pm-8:39 am
2 stops13h 40m
$449
St. LouisHarrisburg
STL - MDT
STLMDT
Lambert-St Louis
Fri 6/26
11:25 am-7:48 pm
1 stop7h 23m
Harrisburg
Sat 6/27
5:55 pm-9:26 pm
1 stop4h 31m
$453
St. LouisHarrisburg
STL - MDT
STLMDT
Lambert-St Louis
Mon 9/28
4:59 pm-11:40 pm
1 stop5h 41m
Harrisburg
Tue 9/29
12:15 pm-5:10 pm
1 stop5h 55m
$537
Cheapest one-way
St. LouisHarrisburg
STL - MDT
STLMDT
Lambert-St Louis
Thu 9/10
8:34 pm-8:18 am
1 stop10h 44m
$202
St. LouisHarrisburg
STL - MDT
STLMDT
Lambert-St Louis
Thu 7/16
7:08 am-2:10 pm
1 stop6h 02m
$269
Quickest one-way
St. LouisHarrisburg
STL - MDT
STLMDT
Lambert-St Louis
Fri 10/30
7:20 am-2:09 pm
1 stop5h 49m
$269
St. LouisHarrisburg
STL - MDT
STLMDT
Lambert-St Louis
Fri 7/17
7:10 pm-2:20 pm
2 stops18h 10m
$381
Showing 1-10 of 17 resultsSorted by cheapest first
Compare providers for flights from St. Louis to Harrisburg
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 St. Louis to Harrisburg in June.
| 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 | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-Harrisburg flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Harrisburg flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Harrisburg flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Harrisburg 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 St. Louis-Harrisburg 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 St. Louis to Harrisburg
Have a flexible travel schedule? Discover the best time to fly to Harrisburg from St. Louis with our price prediction graph.
STL-MDT
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 St. Louis to Harrisburg
Prices
More
What is the cheapest month to book a flight from St. Louis to Harrisburg?
Currently, April is the cheapest month in which you can book a flight from St. Louis to Harrisburg (average of $270). Flying from St. Louis to Harrisburg in May is currently the most expensive (average of $452). 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 St. Louis to Harrisburg?
What’s the top layover airport for flights from St. Louis to Harrisburg?
Share of 1-stop round-trip flights from St. Louis to Harrisburg chosen by Cheapflights users in the past 12 months, using the same layover each way.
Chicago (ORD) – chosen by Cheapflights users on 50% of 1-stop itineraries from St. Louis to Harrisburg on Cheapflights.
What’s the cheapest layover airport for flights from St. Louis to Harrisburg?
Average round-trip fare for 1-stop flights from St. Louis to Harrisburg, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Detroit (DTW) is the most affordable 1-stop option, with an average round-trip price of $265.
What’s the fastest layover option from St. Louis to Harrisburg?
Shortest average travel time for 1-stop one-way flights from St. Louis to Harrisburg, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Detroit (DTW) have the shortest average one-way travel time for 1-stop routes: 4h 17m.
Which airport typically offers the quickest layover for flights from St. Louis to Harrisburg?
Average layover duration for 1-stop one-way flights from St. Louis to Harrisburg, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Detroit (DTW) offer the fastest connection on this route, with an average layover time of 1h 12m.
Reviews of airlines servicing Harrisburg
Get insights into the airlines that provide service to Harrisburg. 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 Harrisburg. Reviews last updated June 17, 2026.
See what other customers who have flown with Delta,United Airlines, andAmerican Airlines from St. Louis to Harrisburg have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Food
7.2
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Food
7.2
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Food
7.2
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Food
7.2
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Harrisburg. 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 Harrisburg?
Book flights to Harrisburg if you plan to visit one of these locationsMechanicsburg
Hershey
Camp Hill
Carlisle
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Top 3 airlines flying from St. Louis to Harrisburg
Discover the top 3 airlines that operate flights from St. Louis to Harrisburg. 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 June 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$248 | Average$311 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$248 | Average$323 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$260 | Average$349 | FlexibilityNo cancel fee | On-time69% |