$284+ 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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
MDT — STL
Oct 21 — Oct 281
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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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 21, 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 21, 2026.
This Delta deal was found by Cheapflights users on 9/16. 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.
Wed 11/256:00 am -
1 stop4h 25m
Tue 12/86:05 pm -
1 stop3h 57m
Deal found 9/16![Delta logo]()
$321
This Delta deal was found by Cheapflights users on 9/16. 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.
Sat 11/1412:09 pm -
1 stop4h 38m
Thu 11/2610:20 am -
1 stop4h 58m
Deal found 9/16![Delta logo]()
$330
This Delta deal was found by Cheapflights users on 9/16. 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 11/266:00 am -
1 stop4h 25m
Fri 12/410:18 am -
1 stop4h 58m
Deal found 9/16![Delta logo]()
$339
This American Airlines deal was found by Cheapflights users on 9/18. 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 10/86:43 am -
1 stop4h 58m
Tue 10/135:00 am -
1 stop5h 19m
Deal found 9/18![American Airlines logo]()
$354
This Delta deal was found by Cheapflights users on 9/17. 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 10/1712:13 pm -
1 stop4h 24m
Thu 10/226:47 am -
1 stop3h 46m
Deal found 9/17![Delta logo]()
$360
This Delta deal was found by Cheapflights users on 9/16. 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 11/135:05 pm -
1 stop4h 24m
Sun 11/226:40 am -
1 stop3h 49m
Deal found 9/16![Delta logo]()
$369
This United Airlines deal was found by Cheapflights users on 9/19. 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 12/317:18 am -
1 stop5h 17m
Deal found 9/19![United Airlines logo]()
$372
This American Airlines deal was found by Cheapflights users on 9/16. 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.
Mon 11/163:15 pm -
1 stop5h 07m
Tue 11/2411:14 am -
1 stop7h 11m
Deal found 9/16![American Airlines logo]()
$383
This American Airlines deal was found by Cheapflights users on 9/20. 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 11/206:03 am -
1 stop7h 41m
Sun 11/227:25 am -
1 stop5h 10m
Deal found 9/20![American Airlines logo]()
$384
This Kiwi.com deal was found by Cheapflights users on 9/19. 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 10/159:20 pm -
1 stop26h 53m
Wed 10/216:35 pm -
2 stops19h 40m
Deal found 9/19![Multiple Airlines logo]()
$387
This American Airlines deal was found by Cheapflights users on 9/16. 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 9/176:54 pm -
1 stop6h 33m
Wed 10/215:00 am -
1 stop5h 19m
Deal found 9/16![American Airlines logo]()
$390
This Delta deal was found by Cheapflights users on 9/16. 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.
Sun 11/86:13 am -
1 stop4h 36m
Fri 11/206:00 pm -
1 stop4h 06m
Deal found 9/16![Delta logo]()
$399
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 21, 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 21, 2026.
This American Airlines deal was found by Cheapflights users on 9/21. 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 11/186:34 am -
1 stop5h 19m
Wed 12/211:34 am -
1 stop6h 49m
Deal found 9/21![American Airlines logo]()
$321
This Delta deal was found by Cheapflights users on 9/16. 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.
Wed 11/2512:09 pm -
1 stop6h 05m
Wed 12/26:32 am -
1 stop4h 08m
Deal found 9/16![Delta logo]()
$321
This United Airlines deal was found by Cheapflights users on 9/19. 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 12/317:18 am -
1 stop5h 17m
Deal found 9/19![United Airlines logo]()
$372
This United Airlines deal was found by Cheapflights users on 9/17. 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 10/175:54 pm -
1 stop6h 04m
Sun 10/188:00 am -
1 stop4h 27m
Deal found 9/17![United Airlines logo]()
$425
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Mon 11/95:41 pm -
1 stop4h 59m
Thu 11/195:00 am -
1 stop7h 24m
Deal found 9/16![United Airlines logo]()
$464
This United Airlines deal was found by Cheapflights users on 9/20. 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 2/46:00 am -
2 stops11h 53m
Tue 2/99:22 am -
1 stop6h 36m
Deal found 9/20![United Airlines logo]()
$523
This United Airlines deal was found by Cheapflights users on 9/19. 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 3/36:00 am -
2 stops10h 41m
Sun 3/73:21 pm -
1 stop4h 59m
Deal found 9/19![United Airlines logo]()
$628
This United Airlines deal was found by Cheapflights users on 9/20. 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 11/206:15 am -
2 stops10h 28m
Fri 12/41:18 pm -
1 stop6h 36m
Deal found 9/20![United Airlines logo]()
$733
This United Airlines deal was found by Cheapflights users on 9/20. 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 11/206:15 am -
2 stops10h 28m
Sun 11/228:00 am -
1 stop4h 58m
Deal found 9/20![United Airlines logo]()
$733
This United Airlines deal was found by Cheapflights users on 9/20. 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 10/86:15 am -
2 stops10h 28m
Tue 10/138:00 am -
1 stop4h 27m
Deal found 9/20![United Airlines logo]()
$737
Last-minute flights from Harrisburg to St. LouisDiscover last-minute flight deals from Harrisburg to St. Louis. Data last updated September 21, 2026 and is based on user searches.
Discover last-minute flight deals from Harrisburg to St. Louis. Data last updated September 21, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/16. 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 10/86:43 am -
1 stop4h 58m
Tue 10/135:00 am -
1 stop5h 19m
Deal found 9/16![American Airlines logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 9/19. 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 10/159:20 pm -
1 stop26h 53m
Wed 10/216:35 pm -
2 stops19h 40m
Deal found 9/19![Multiple Airlines logo]()
$387
This Delta deal was found by Cheapflights users on 9/17. 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 10/156:13 am -
1 stop4h 36m
Tue 10/206:05 pm -
1 stop3h 53m
Deal found 9/17![Delta logo]()
$400
This United Airlines deal was found by Cheapflights users on 9/17. 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 10/156:30 am -
1 stop6h 43m
Thu 10/228:00 am -
1 stop4h 27m
Deal found 9/17![United Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 9/17. 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 10/165:54 pm -
1 stop4h 27m
Tue 10/201:29 pm -
1 stop7h 03m
Deal found 9/17![United Airlines logo]()
$410
This Delta deal was found by Cheapflights users on 9/17. 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 10/176:13 am -
1 stop4h 36m
Sat 10/246:47 am -
1 stop3h 46m
Deal found 9/17![Delta logo]()
$321
This Delta deal was found by Cheapflights users on 9/19. 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 10/176:13 am -
1 stop4h 36m
Tue 10/206:05 pm -
1 stop3h 53m
Deal found 9/19![Delta logo]()
$330
This Delta deal was found by Cheapflights users on 9/17. 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 10/1712:13 pm -
1 stop4h 24m
Thu 10/226:47 am -
1 stop3h 46m
Deal found 9/17![Delta logo]()
$360
This Delta deal was found by Cheapflights users on 9/19. 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 10/1712:13 pm -
1 stop4h 24m
Wed 10/216:05 pm -
1 stop3h 53m
Deal found 9/19![Delta logo]()
$369
This United Airlines deal was found by Cheapflights users on 9/17. 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 10/175:54 pm -
1 stop6h 04m
Sun 10/188:00 am -
1 stop4h 27m
Deal found 9/17![United Airlines logo]()
$425
This deal was found by Cheapflights users on 9/19. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2012:10 pm -
1 stop5h 43m
Sat 10/245:40 pm -
1 stop4h 19m
Deal found 9/19![American Airlines logo]()
$421
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 21, 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 21, 2026.
This American Airlines deal was found by Cheapflights users on 9/18. 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 11/82:15 pm -
1 stop5h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![American Airlines logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 11/299:17 pm -
1 stop16h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 10/18:53 pm -
2 stops17h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$362
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/15:54 pm -
1 stop4h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![United Airlines logo]()
$423
This Delta deal was found by Cheapflights users on 9/18. 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.
Sun 11/85:10 pm -
2 stops7h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Delta logo]()
$672
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 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $321 (Delta) |
One-way from | $284 (American Airlines) |
Popular in | August |
Cheapest in | January |
Average price | $407 |
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 21, 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
Sun 11/8
2:15 pm-6:17 pm
1 stop5h 02m
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 11/18
6:34 am-10:53 am
1 stop5h 19m
Lambert-St Louis
Wed 12/2
11:34 am-7:23 pm
1 stop6h 49m
$321
HarrisburgSt. Louis
MDT Harrisburg - STL Lambert-St Louis
MDTSTL
Harrisburg
Wed 11/25
12:09 pm-5:14 pm
1 stop6h 05m
Lambert-St Louis
Wed 12/2
6:32 am-11:40 am
1 stop4h 08m
$321
HarrisburgSt. Louis
MDT Harrisburg - STL Lambert-St Louis
MDTSTL
Harrisburg
Sun 11/29
9:17 pm-5:40 pm
2 stops21h 23m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$359
HarrisburgSt. Louis
MDT Harrisburg - STL Lambert-St Louis
MDTSTL
Harrisburg
Thu 10/1
8:53 pm-1:10 pm
2 stops17h 17m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$362
HarrisburgSt. Louis
MDT Harrisburg - STL Lambert-St Louis
MDTSTL
Harrisburg
Sat 12/26
6:00 am-10:42 am
1 stop5h 42m
Lambert-St Louis
Thu 12/31
7:18 am-1:35 pm
1 stop5h 17m
$372
Quickest round-trip
HarrisburgSt. Louis
MDT Harrisburg - STL Lambert-St Louis
MDTSTL
Harrisburg
Thu 10/1
5:54 pm-9:21 pm
1 stop4h 27m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$423
HarrisburgSt. Louis
MDT Harrisburg - STL Lambert-St Louis
MDTSTL
Harrisburg
Sat 10/17
5:54 pm-10:58 pm
1 stop6h 04m
Lambert-St Louis
Sun 10/18
8:00 am-1:27 pm
1 stop4h 27m
$425
HarrisburgSt. Louis
MDT Harrisburg - STL Lambert-St Louis
MDTSTL
Harrisburg
Mon 11/9
5:41 pm-9:40 pm
1 stop4h 59m
Lambert-St Louis
Thu 11/19
5:00 am-1:24 pm
1 stop7h 24m
$464
HarrisburgSt. Louis
MDT Harrisburg - STL Lambert-St Louis
MDTSTL
Harrisburg
Thu 2/4
6:00 am-4:53 pm
2 stops11h 53m
Lambert-St Louis
Tue 2/9
9:22 am-4:58 pm
1 stop6h 36m
$523
Showing 1-10 of 15 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 below average for this route at the moment.
Harrisburg to St. Louis flights typically cost between $336 and $531 in November.The cheapest round-trip price found within the last 5 days was $321 on Delta (Nov 25-Dec 8).
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 21, 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.
Crew
8.5
Boarding
8.1
Overall
7.8
Food
7.2
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Crew
8.5
Boarding
8.1
Overall
7.8
Food
7.2
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Crew
8.5
Boarding
8.1
Overall
7.8
Food
7.2
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Crew
8.5
Boarding
8.1
Overall
7.8
Food
7.2
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
Maryland Heights
Collinsville
Edwardsville
Glencoe
Chesterfield
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St. Louis flight routes
Alternative routes for Harrisburg to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Harrisburg to St. Louis by cabin class
Find flights from Harrisburg to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Harrisburg and St. Louis flights
Browse other Harrisburg and St. Louis flight options. Last updated on September 21, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 September 21, 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 7,457,451 searches. Data last updated September 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$268 | Average$462 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$268 | Average$391 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$287 | Average$398 | FlexibilityNo cancel fee | On-timeN/A |