STL - MDT

$274 Find Cheap Flights from St. Louis to Harrisburg - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$310
Typical prices: $289-$420
Delta
Sun 12/23Fri 12/28
STL - MDT • 1 stop
Cheapest one-way
$274
Typical prices: $248-$348
United Airlines
Thu 11/22
STL - MDT • 1 stop
Nonstop flights
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
Cheapest • 19% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $248 (round-trip)
Shortest trip • 4h 28m (one-way)
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Insights
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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

Wed, Dec 23 - Mon, Dec 28
Delta Logo
6:21 pm - 11:10 pmSTL  Lambert-St Louis-MDT Harrisburg
3h 49m1 stop Detroit Metropolitan Wayne County
Delta Logo
6:10 am - 9:53 amMDT  Harrisburg-STL Lambert-St Louis
4h 43m1 stop Detroit Metropolitan Wayne County
$310Delta
Fri, Jan 1 - Wed, Jan 6
Delta Logo
1:00 pm - 7:06 pmSTL  Lambert-St Louis-MDT Harrisburg
5h 06m1 stop Detroit Metropolitan Wayne County
Delta Logo
6:10 am - 9:36 amMDT  Harrisburg-STL Lambert-St Louis
4h 26m1 stop Detroit Metropolitan Wayne County
$330Delta
Fri, Oct 9 - Mon, Oct 12
American Airlines Logo
5:00 am - 11:19 amSTL  Lambert-St Louis-MDT Harrisburg
5h 19m1 stop Chicago O'Hare Intl
American Airlines Logo
6:08 am - 10:50 amMDT  Harrisburg-STL Lambert-St Louis
5h 42m1 stop Chicago O'Hare Intl
$339American Airlines
Thu, Oct 29 - Mon, Nov 2
American Airlines Logo
6:00 am - 11:42 amSTL  Lambert-St Louis-MDT Harrisburg
4h 42m1 stop Philadelphia
American Airlines Logo
2:15 pm - 6:17 pmMDT  Harrisburg-STL Lambert-St Louis
5h 02m1 stop Chicago O'Hare Intl
$339American Airlines
Fri, Oct 9 - Fri, Oct 16
American Airlines Logo
5:00 am - 11:19 amSTL  Lambert-St Louis-MDT Harrisburg
5h 19m1 stop Chicago O'Hare Intl
American Airlines Logo
6:08 am - 10:50 amMDT  Harrisburg-STL Lambert-St Louis
5h 42m1 stop Chicago O'Hare Intl
$339American Airlines
Wed, Jan 6 - Sat, Jan 9
United Airlines Logo
1:09 pm - 7:05 pmSTL  Lambert-St Louis-MDT Harrisburg
4h 56m1 stop Chicago O'Hare Intl
United Airlines Logo
6:30 am - 10:30 amMDT  Harrisburg-STL Lambert-St Louis
5h 00m1 stop Chicago O'Hare Intl
$435United Airlines
Sat, Sep 26 - Wed, Sep 30
United Airlines Logo
11:35 am - 4:52 pmSTL  Lambert-St Louis-MDT Harrisburg
4h 17m1 stop Chicago O'Hare Intl
United Airlines Logo
5:54 pm - 10:59 pmMDT  Harrisburg-STL Lambert-St Louis
6h 05m1 stop Chicago O'Hare Intl
$449United Airlines
Tue, Sep 29 - Sat, Oct 3
United Airlines Logo
1:29 pm - 9:50 pmSTL  Lambert-St Louis-MDT Harrisburg
7h 21m1 stop Chicago O'Hare Intl
United Airlines Logo
2:08 pm - 7:41 pmMDT  Harrisburg-STL Lambert-St Louis
6h 33m1 stop Chicago O'Hare Intl
$449United Airlines
Tue, Oct 6 - Fri, Oct 9
Delta Logo
10:35 am - 4:06 pmSTL  Lambert-St Louis-MDT Harrisburg
4h 31m1 stop Detroit Metropolitan Wayne County
Delta Logo
6:13 am - 9:49 amMDT  Harrisburg-STL Lambert-St Louis
4h 36m1 stop Detroit Metropolitan Wayne County
$567Delta
Thu, Oct 29 - Mon, Nov 2
Delta Logo
6:21 am - 4:06 pmSTL  Lambert-St Louis-MDT Harrisburg
8h 45m2 stops Minneapolis St Paul Detroit Metropolitan Wayne County
Delta Logo
5:10 pm - 11:21 pmMDT  Harrisburg-STL Lambert-St Louis
7h 11m2 stops Detroit Metropolitan Wayne County Minneapolis St Paul
$1,425Delta
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 from St. Louis to Harrisburg with more confidence.

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

Round-trip flights from St. Louis to Harrisburg start at $310. Prices are typical for this route right now, with typical round-trip fares ranging from $289 to $420. The lowest price found in the past 5 days was $310 on Delta.

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

Tuesday is the cheapest day of the week to fly from St. Louis to Harrisburg, it is 7% cheaper than the average day. Monday is the most expensive day with flight prices 15% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is 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.
  • May ($423) and July ($396) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 56% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Key details for St. Louis to Harrisburg flights

Low season

May

Cheapest flight

$274
Best time to beat the crowds but there is an average 26% increase in price.
Most popular time to fly with an average 2% increase in price.
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 route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • 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).

  • 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.

  • 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) - 49% of one-stop connections
    • Detroit Metropolitan Wayne County (DTW) - 13% of one-stop connections
    • Philadelphia (PHL) - 13% of one-stop connections
    • Charlotte Douglas (CLT) - 12% of one-stop connections

    Chicago O'Hare Intl (ORD) handles the largest share of one-stop connections on this route.

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

    Yes. Being flexible with your travel dates can save you up to 20% on the St. Louis to Harrisburg route. Tuesday is the cheapest departure day at $312 round-trip on average, while Monday is the most expensive at $387, a difference of $75. 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 long is a flight from St. Louis to Harrisburg?

    A nonstop flight from St. Louis to Harrisburg takes 0h 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.

  • 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 $310 to $2,314. That means the highest observed fare was about 7x 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 $425, which is 42% above the typical average for this route.

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

    Flying via Detroit Metropolitan Wayne County (DTW) gives the shortest average 1-stop total travel time at 4h 28m, compared with 4h 31m via Philadelphia (PHL) 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.

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

    Harrisburg Airport (MDT) hosts 5 major car rental companies, with daily rates starting from around $32 for economy cars. Top options include:
    • Hertz
    • Alamo
    • Budget
    • Enterprise Rent-A-Car
    • Avis

  • 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 $420, with an average of $335 over the past 12 months. Anything below $289 counts as a good deal.

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 can be flexible, aim for a Tuesday departure instead of Monday. On this route, Tuesday flights average $312 - about $75 less than Monday (19% 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 $153 less than the most expensive month, which is May (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