What airlines fly to Harrisburg?

Southwest, American Airlines and Delta are the top three most popular airlines that fly to Harrisburg from St. Louis according to our data. Southwest is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Harrisburg. Keep in mind that there are 5 different airlines that fly to Harrisburg on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Lambert-St Louis to Harrisburg?

American Airlines and Delta are the most popular carriers operating from Lambert-St Louis to Harrisburg

When did momondo last update prices for flights from Lambert-St Louis Airport to Harrisburg Airport?

Prices for flights from Lambert-St Louis Airport to Harrisburg Airport are updated daily.

How many operators does momondo search for flights from Lambert-St Louis Airport to Harrisburg Airport?

The number of operators available for flights from Lambert-St Louis Airport to Harrisburg Airport is 3 as of April 2026.

How old do you have to be to fly from Lambert-St Louis Airport to Harrisburg Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Harrisburg Airport.

What documentation or ID do you need to fly to Harrisburg Airport?

The travel and health documents you'll need for your trip to Harrisburg Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Harrisburg Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$158 Cheap Flights from St. Louis to Harrisburg in 2026

Q: What is the typical price of a round-trip flight between St. Louis and Harrisburg?

Prices are currently high for flights on this route. Typical prices usually range from $288 to $257. The lowest price recently found on this route was $291.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from St. Louis to Harrisburg

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:40 pm - 11:53 pm

STL

MDT

7h 13m

1 stop

5:39 pm - 8:37 pm

MDT

STL

3h 58m

1 stop

$291Delta

Tue, Jul 7 - Sat, Jul 11

5:59 pm - 11:03 pm

STL

MDT

4h 04m

1 stop

4:19 pm - 8:44 pm

MDT

STL

5h 25m

1 stop

$310Delta

Sat, Apr 25 - Sat, May 2

5:21 pm - 11:52 pm

STL

MDT

5h 31m

1 stop

5:38 am - 11:47 am

MDT

STL

7h 09m

1 stop

$329American Airlines

Tue, Apr 14 - Sat, Apr 18

7:09 pm - 12:55 am

STL

MDT

4h 46m

1 stop

5:54 pm - 10:50 pm

MDT

STL

5h 56m

1 stop

$334United Airlines

Fri, May 1 - Fri, May 8

5:51 am - 11:23 am

STL

MDT

4h 32m

1 stop

6:43 pm - 11:46 pm

MDT

STL

6h 03m

1 stop

$339American Airlines

Thu, Apr 16 - Mon, Apr 20

5:40 pm - 11:08 pm

STL

MDT

4h 28m

1 stop

7:40 pm - 11:59 pm

MDT

STL

5h 19m

1 stop

$357American Airlines

Thu, Jun 4 - Sat, Jun 6

6:30 am - 1:33 pm

STL

MDT

6h 03m

1 stop

5:54 pm - 9:13 pm

MDT

STL

4h 19m

1 stop

$371United Airlines

Sat, May 2 - Wed, May 6

7:00 am - 6:37 pm

STL

MDT

10h 37m

1 stop

7:40 pm - 11:59 pm

MDT

STL

5h 19m

1 stop

$390American Airlines

Thu, Jun 4 - Sat, Jun 6

5:24 pm - 11:55 pm

STL

MDT

5h 31m

1 stop

6:00 am - 9:32 am

MDT

STL

4h 32m

1 stop

$394Delta

Fri, Jun 12 - Sun, Jun 14

6:30 am - 11:42 am

STL

MDT

4h 12m

1 stop

6:00 am - 9:31 am

MDT

STL

4h 31m

1 stop

$405Delta

Wed, Jun 24 - Sun, Jul 12

United Airlines flights from St. Louis to Harrisburg

Our best United Airlines deals on St. Louis to Harrisburg flight tickets

United Airlines

May 1

STL7:09 pmLambert-St Louis

4h 46m

1 stop

MDT12:55 amHarrisburg

May 8

MDT5:54 pmHarrisburg

5h 56m

1 stop

STL10:50 pmLambert-St Louis

$334

United Airlines

May 2

STL6:30 amLambert-St Louis

6h 03m

1 stop

MDT1:33 pmHarrisburg

May 6

MDT5:54 pmHarrisburg

4h 19m

1 stop

STL9:13 pmLambert-St Louis

$371

United Airlines

May 2

STL8:45 amLambert-St Louis

4h 10m

1 stop

MDT1:55 pmHarrisburg

May 6

MDT6:15 amHarrisburg

15h 58m

2 stops

STL9:13 pmLambert-St Louis

$453

Delta flights from St. Louis to Harrisburg

Our best Delta deals on St. Louis to Harrisburg flight tickets

Delta

Jul 7

STL3:40 pmLambert-St Louis

7h 13m

1 stop

MDT11:53 pmHarrisburg

Jul 11

MDT5:39 pmHarrisburg

3h 58m

1 stop

STL8:37 pmLambert-St Louis

$291

Delta

Apr 25

STL5:59 pmLambert-St Louis

4h 04m

1 stop

MDT11:03 pmHarrisburg

May 2

MDT4:19 pmHarrisburg

5h 25m

1 stop

STL8:44 pmLambert-St Louis

$310

Delta

Apr 11

STL5:57 pmLambert-St Louis

3h 52m

1 stop

MDT10:49 pmHarrisburg

Apr 14

MDT4:19 pmHarrisburg

5h 25m

1 stop

STL8:44 pmLambert-St Louis

$329

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Tue 7/7

3:40 pm-11:53 pm

1 stop7h 13m

Harrisburg

Sat 7/11

5:39 pm-8:37 pm

1 stop3h 58m

$291

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Sat 4/25

5:59 pm-11:03 pm

1 stop4h 04m

Harrisburg

Sat 5/2

4:19 pm-8:44 pm

1 stop5h 25m

$310

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Tue 4/14

5:21 pm-11:52 pm

1 stop5h 31m

Harrisburg

Sat 4/18

5:38 am-11:47 am

1 stop7h 09m

$329

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Fri 5/1

7:09 pm-12:55 am

1 stop4h 46m

Harrisburg

Fri 5/8

5:54 pm-10:50 pm

1 stop5h 56m

$334

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Thu 4/16

5:51 am-11:23 am

1 stop4h 32m

Harrisburg

Mon 4/20

6:43 pm-11:46 pm

1 stop6h 03m

$339

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Thu 6/4

5:40 pm-11:08 pm

1 stop4h 28m

Harrisburg

Sat 6/6

7:40 pm-11:59 pm

1 stop5h 19m

$357

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Sat 5/2

6:30 am-1:33 pm

1 stop6h 03m

Harrisburg

Wed 5/6

5:54 pm-9:13 pm

1 stop4h 19m

$371

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Thu 6/4

7:00 am-6:37 pm

1 stop10h 37m

Harrisburg

Sat 6/6

7:40 pm-11:59 pm

1 stop5h 19m

$390

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Fri 6/12

5:24 pm-11:55 pm

1 stop5h 31m

Harrisburg

Sun 6/14

6:00 am-9:32 am

1 stop4h 32m

$394

Quickest round-trip

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Wed 6/24

6:30 am-11:42 am

1 stop4h 12m

Harrisburg

Sun 7/12

6:00 am-9:31 am

1 stop4h 31m

$405

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Harrisburg

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the typical price of a round-trip flight between St. Louis and Harrisburg?

What is the cheapest month to fly to Harrisburg?

The month of April is, on average, the cheapest month to fly to Harrisburg from St. Louis, with most prices found around $265. If you aren’t able to travel to Harrisburg during the month of April, then flying in July is also cheap. Prices for this month can be found on momondo for an average of $279.

How have St. Louis to Harrisburg flight prices changed over time?

As of April 2026, prices for St. Louis to Harrisburg flights are approximately 145% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to Harrisburg

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Harrisburg according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Harrisburg (STL to MDT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Harrisburg

Fastest flight time	4h 12m
Direct flights	None

The fastest flight from St. Louis to Harrisburg takes 4h 12m

There are no direct flights from St. Louis to Harrisburg. There are no popular flight routes from St. Louis to Harrisburg.

Search flight deals

Frequently asked questions about flying from St. Louis to Harrisburg

How far is Lambert-St Louis to Harrisburg by plane?
The straight-line distance from Lambert-St Louis to Harrisburg is 718.1 mi. Typically, this will take 4h 12m by plane in normal conditions.
When did momondo last update prices for flights from Lambert-St Louis Airport to Harrisburg Airport?
Prices for flights from Lambert-St Louis Airport to Harrisburg Airport are updated daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Harrisburg Airport?
The number of operators available for flights from Lambert-St Louis Airport to Harrisburg Airport is 3 as of April 2026.
How old do you have to be to fly from Lambert-St Louis Airport to Harrisburg Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Harrisburg Airport.
What documentation or ID do you need to fly to Harrisburg Airport?
The travel and health documents you'll need for your trip to Harrisburg Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Harrisburg Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from St. Louis to Harrisburg?
Based on momondo bookings for this flight route, the most popular airline on flight routes from St. Louis to Harrisburg is American Airlines (59% of total bookings). The next most popular airlines are Delta (24%) and United Airlines (17%).

Best airlines flying from St. Louis to Harrisburg

Compare and see reviews for airlines that fly from St. Louis to Harrisburg with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $248	Free Cancellation	Rating 7.1 11,549 reviews	Search American Airlines flights
Delta	PriceFrom $248	Free Cancellation	Rating 7.9 8,369 reviews	Search Delta flights
United Airlines	PriceFrom $251	Free Cancellation	Rating 7.4 9,533 reviews	Search United Airlines flights

Hershey

Carlisle

Mechanicsburg

Camp Hill

Hummelstown

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Harrisburg?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Harrisburg. momondo saves you time and could save you money on your trip.

Can I find flights from St. Louis to Harrisburg with flexible booking policies on momondo?

Yes. All flights to Harrisburg from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from St. Louis to Harrisburg?

Once all potential St. Louis to Harrisburg flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from St. Louis to Harrisburg right now. Can momondo alert me if prices change?

If you are not ready to book a flight from St. Louis to Harrisburg now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Harrisburg and let you know when they change.