STL - MDT

$321 Find Cheap Flights from St. Louis to Harrisburg - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$321
Typical prices: $289-$438
Delta
Wed 12/5Wed 12/12
STL - MDT • 1 stop
Cheapest one-way
$364
Typical prices: $248-$357
United Airlines
Sun 11/11
STL - MDT • 1 stop
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Harrisburg. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
April
Cheapest • 22% price drop
December
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Washington, D.C. Dulles Intl (IAD)
Cheapest • Avg $331 (round-trip)
Philadelphia (PHL)
Shortest trip • 4h 32m (one-way)
Insights
Insights
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Booking Insights
Flight Deals

Cheap Flights from St. Louis to Harrisburg (STL-MDT)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Harrisburg

Sat, Dec 5 - Sat, Dec 12
Delta Logo
6:32 am - 11:44 amSTL  Lambert-St Louis-MDT Harrisburg
4h 12m1 stop Detroit Metropolitan Wayne County
Delta Logo
5:06 pm - 8:32 pmMDT  Harrisburg-STL Lambert-St Louis
4h 26m1 stop Detroit Metropolitan Wayne County
$321Delta
Sat, Jan 9 - Sat, Jan 16
United Airlines Logo
8:30 am - 1:56 pmSTL  Lambert-St Louis-MDT Harrisburg
4h 26m1 stop Washington, D.C. Dulles Intl
United Airlines Logo
5:40 pm - 11:20 pmMDT  Harrisburg-STL Lambert-St Louis
6h 40m1 stop Chicago O'Hare Intl
$321United Airlines
Thu, Dec 10 - Sat, Dec 12
American Airlines Logo
11:37 am - 7:50 pmSTL  Lambert-St Louis-MDT Harrisburg
7h 13m1 stop Chicago O'Hare Intl
American Airlines Logo
12:04 pm - 4:45 pmMDT  Harrisburg-STL Lambert-St Louis
5h 41m1 stop Chicago O'Hare Intl
$330American Airlines
Thu, Dec 24 - Thu, Dec 31
Delta Logo
1:00 pm - 7:16 pmSTL  Lambert-St Louis-MDT Harrisburg
5h 16m1 stop Detroit Metropolitan Wayne County
Delta Logo
6:15 am - 11:35 amMDT  Harrisburg-STL Lambert-St Louis
6h 20m1 stop Detroit Metropolitan Wayne County
$339Delta
Wed, Dec 23 - Tue, Dec 29
Delta Logo
6:21 pm - 11:15 pmSTL  Lambert-St Louis-MDT Harrisburg
3h 54m1 stop Detroit Metropolitan Wayne County
Delta Logo
1:00 pm - 5:26 pmMDT  Harrisburg-STL Lambert-St Louis
5h 26m1 stop Detroit Metropolitan Wayne County
$350Delta
Thu, Nov 12 - Sat, Nov 14
American Airlines Logo
6:02 am - 1:29 pmSTL  Lambert-St Louis-MDT Harrisburg
6h 27m1 stop Philadelphia
American Airlines Logo
2:56 pm - 8:26 pmMDT  Harrisburg-STL Lambert-St Louis
6h 30m1 stop Philadelphia
$369American Airlines
Tue, Jan 5 - Sat, Jan 9
United Airlines Logo
5:00 am - 1:30 pmSTL  Lambert-St Louis-MDT Harrisburg
7h 30m1 stop Chicago O'Hare Intl
United Airlines Logo
6:20 am - 10:35 amMDT  Harrisburg-STL Lambert-St Louis
5h 15m1 stop Chicago O'Hare Intl
$421United Airlines
Wed, Jan 6 - Sat, Jan 9
United Airlines Logo
1:17 pm - 7:11 pmSTL  Lambert-St Louis-MDT Harrisburg
4h 54m1 stop Chicago O'Hare Intl
United Airlines Logo
6:20 am - 10:35 amMDT  Harrisburg-STL Lambert-St Louis
5h 15m1 stop Chicago O'Hare Intl
$421United Airlines
Tue, Nov 24 - Sun, Nov 29
Multiple Airlines Logo
6:05 pm - 8:27 pmSTL  Lambert-St Louis-MDT Harrisburg
25h 22m1 stop Orlando
Multiple Airlines Logo
9:17 pm - 5:40 pmMDT  Harrisburg-STL Lambert-St Louis
21h 23m2 stops Orlando Sanford Intl Atlanta Hartsfield-Jackson
$646Multiple Airlines
Tue, Nov 24 - Sun, Nov 29
Multiple Airlines Logo
6:05 pm - 8:27 pmSTL  Lambert-St Louis-MDT Harrisburg
25h 22m1 stop Orlando
Multiple Airlines Logo
9:17 pm - 11:59 pmMDT  Harrisburg-STL Lambert-St Louis
27h 42m1 stop Orlando Sanford Intl
$647Multiple Airlines
Booking Insights

Price, demand and travel trends for St. Louis to Harrisburg flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from St. Louis to Harrisburg?

Round-trip flights from St. Louis to Harrisburg typically range from $289 to $438. The lowest price found in the past 5 days was $321, on Delta.

What's the cheapest day of the week to fly from St. Louis to Harrisburg?

Based on deals KAYAK users found in the last 12 months, Thursday is the cheapest day of the week to fly from St. Louis to Harrisburg. It’s 17% cheaper than the average day, while Monday is the most expensive, with prices 11% higher.

What’s the cheapest month to fly from St. Louis to Harrisburg?

•April is the cheapest month to fly from St. Louis to Harrisburg at $270 round-trip.
•September ($687) and May ($423) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 154% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Key details for St. Louis to Harrisburg flights

Low season

September

Cheapest flight

$321
Beat the crowds with an average 52% drop in travelers.
The most popular month to fly with an average 38% increase in travelers.
Round-trip flight from St. Louis to Harrisburg

When to book flights from St. Louis to Harrisburg

Are your dates flexible? Find out the best times to travel from St. Louis to Harrisburg based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your St. Louis to Harrisburg flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from St. Louis to Harrisburg?

    Only Economy Class is available on flights from St. Louis to Harrisburg.

  • How long is a flight from St. Louis to Harrisburg?

    A nonstop flight from St. Louis to Harrisburg takes 00m, covering 731 miles.

  • Do I need a passport to fly from St. Louis to Harrisburg?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a St. Louis to Harrisburg flight?

    Round-trip flights from St. Louis to Harrisburg range from $289 to $438, with an average of $346 over the past 12 months. Anything below $289 counts as a good deal.

  • Have flight prices from St. Louis to Harrisburg changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $321 to $2,490. That means the highest observed fare was about 8x higher than the lowest one.

  • How are flight prices from St. Louis to Harrisburg looking right now?

    One-way fares from St. Louis to Harrisburg are currently higher than usual. Average one-way flight prices are about $467, which is 46% above the typical average for this route.

  • What car rental options are available at Harrisburg Airport (MDT)?

    Harrisburg Airport (MDT) hosts 5 major car rental companies, with daily rates averaging $71 for economy cars. Top options include:

    • Hertz
    • Alamo
    • Budget
    • Enterprise Rent-A-Car
    • National

  • Which airports can I use when flying from St. Louis to Harrisburg?

    Flights from St. Louis to Harrisburg usually depart from Lambert-St Louis (STL) and arrive at Harrisburg (MDT).

  • Which airports do connecting flights from St. Louis to Harrisburg pass through?

    One-stop flights from St. Louis to Harrisburg most commonly connect through:

    • Chicago O'Hare Intl (ORD) - 50% of one-stop connections
    • Detroit Metropolitan Wayne County (DTW) - 18% of one-stop connections
    • Charlotte Douglas (CLT) - 10% of one-stop connections
    • Philadelphia (PHL) - 10% of one-stop connections

  • Can I save money by using flexible dates for flights from St. Louis to Harrisburg?

    Yes. Flexible dates can save you up to 26% on flights from St. Louis to Harrisburg. Thursday is the cheapest departure day at $289 round-trip on average, while Monday is the most expensive at $387, a difference of $98.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from St. Louis to Harrisburg?

    Flying via Philadelphia (PHL) gives the shortest average 1-stop total travel time at 4h 32m, compared with 4h 34m via Detroit Metropolitan Wayne County (DTW) and 4h 43m via Washington, D.C. Dulles Intl (IAD).

  • What is the time difference between St. Louis and Harrisburg?

    Harrisburg is 1 hour ahead of St. Louis (Eastern Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Your guide to booking St. Louis to Harrisburg flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Thursday departure and avoid flying on Monday. On this route, Thursday flights average $289, about $98 less than Monday fares (25% savings) based on the last 12 months.
  • If you can choose when to travel, plan your St. Louis to Harrisburg trip for April. Fares historically average $270 round-trip in that month - typically $417 less than the most expensive month, which is September (based on the last 12 months).

More options for your flight from St. Louis to Harrisburg

Complete your trip to Harrisburg with a hotel stay or car rental

Car rentals in Harrisburg
Hotels in Harrisburg
Vacations in Harrisburg