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Harrisburg

$154+ 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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MDT
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap 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 12, 2025.

Round-trip from

$249
(American Airlines)

One-way from

$154
(Mytrip)

Popular in

April

Cheapest in

October

Average price

$438
From Lambert-St Louis to Harrisburg
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One-way flight from Lambert-St Louis to Harrisburg
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Highest demand for flights based on searches. 11% potential increase in price ($47 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from St. Louis to Harrisburg

Cheapest flights from St. Louis to Harrisburg
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 12, 2025.

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.
Fri 8/296:00 amSTL - MDT
1 stop4h 38mAmerican Airlines
Mon 9/16:26 pmMDT - STL
1 stop6h 25mAmerican Airlines
Deal found 6/12$249
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2510:47 amSTL - MDT
2 stops32h 43mMultiple Airlines
Mon 7/288:51 pmMDT - STL
2 stops22h 50mMultiple Airlines
Deal found 6/10$304
This Delta deal was found by Cheapflights users on 6/10. 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 6/145:30 pmSTL - MDT
1 stop5h 28mDelta
Sat 6/216:10 amMDT - STL
1 stop4h 27mDelta
Deal found 6/10$313
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.
Thu 6/123:35 pmSTL - MDT
1 stop4h 50mUnited Airlines
Sat 6/146:30 amMDT - STL
1 stop5h 15mUnited Airlines
Deal found 6/11$398
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/223:16 pmSTL - MDT
1 stop19h 37mFrontier
Mon 8/2510:48 amMDT - STL
2 stops23h 23mFrontier
Deal found 6/12$401

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 12, 2025.
Use the filters below to find and compare flights from St. Louis to Harrisburg that are best for you.

Fly from

St. Louis

Fly to

Harrisburg

Route

Depart

Return

Price

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Fri 8/29

6:00 am-11:38 am

1 stop4h 38m

Harrisburg

Mon 9/1

6:26 pm-11:51 pm

1 stop6h 25m

$249

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Fri 7/25

10:47 am-8:30 pm

2 stops32h 43m

Harrisburg

Mon 7/28

8:51 pm-6:41 pm

2 stops22h 50m

$304

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Fri 7/25

5:23 pm-11:52 pm

1 stop5h 29m

Harrisburg

Mon 7/28

6:25 pm-11:53 pm

1 stop6h 28m

$324

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Fri 8/22

3:16 pm-11:53 am

1 stop19h 37m

Harrisburg

Mon 8/25

10:48 am-9:11 am

2 stops23h 23m

$401

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Wed 9/10

8:15 am-1:48 pm

1 stop4h 33m

Harrisburg

Sat 9/13

8:15 am-12:25 pm

1 stop5h 10m

$447

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Mon 7/14

9:50 am-8:01 pm

2 stops9h 11m

$154

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Fri 7/4

5:47 pm-10:28 am

1 stop15h 41m

$163

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Tue 7/1

6:00 am-10:55 am

1 stop3h 55m

$190

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Mon 6/23

4:07 pm-11:58 pm

1 stop6h 51m

$249

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Tue 7/1

6:00 am-9:11 pm

3 stops14h 11m

$444

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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.
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

What is the cheapest month to book a flight from St. Louis to Harrisburg?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Harrisburg (average of $355). Flying from St. Louis to Harrisburg in July is currently the most expensive (average of $425). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to MDT?

Find hourly flight availability from St. Louis to Harrisburg. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

A simple way to save on the total cost of your ticket is to fly from St. Louis to Harrisburg in the morning. If you’re flexible enough to do this you can expect to save up to 19% on your trip compared to booking a flight at noon.

Rainfall in Harrisburg by month

Plan your trip to Harrisburg by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Harrisburg ranges from 2.7 - 4.1 inches per month. May is typically the wettest month, when rainfall can reach 4.1 in. February is typically the driest time to visit Harrisburg when rainfall is around 2.7 in.

Temperature in Harrisburg by month

Plan your trip to Harrisburg by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Harrisburg, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 12, 2025.
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Frontier
6.0
Okay
3,295 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • What are the cheapest airlines flying from St. Louis to Harrisburg round-trip?

    Flying on American Airlines is currently your cheapest option to Harrisburg, with prices starting at $249. Additional round-trip tickets that might be worth considering are offered by Delta and Frontier, with the lowest prices starting at $324 and $401, respectively. American Airlines is priced at 30% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from St. Louis to Harrisburg one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $163. Users have also found prices from $190 and $249 on American Airlines and Delta, respectively.

  • Can I find deals for flights from St. Louis to Harrisburg that include hotel bookings?

    Yes. In addition to deals on St. Louis to Harrisburg flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Harrisburg?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Harrisburg.

  • Can I find deals for business class flights from St. Louis to Harrisburg?

    Yes. Cheapflights offers flight deals from St. Louis to Harrisburg by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Harrisburg?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Harrisburg (average of $355). Flying from St. Louis to Harrisburg in July is currently the most expensive (average of $425). 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.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Carlisle
Hershey
Mechanicsburg
Camp Hill

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Alternative routes for St. Louis to Harrisburg

See prices for flight routes from nearby airports that may be better suited for you.
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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 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$211Average$351FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$248Average$345FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$248Average$323FlexibilityNo cancel feeOn-time69%

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