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

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

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 51% 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.

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 May 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.

$154 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 low for flights on this route. Typical prices usually range from $542 to $383. The lowest price recently found on this route was $291.

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Find the cheapest flights from St. Louis to Harrisburg

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 11:11 am

STL

MDT

4h 11m

1 stop

6:22 pm - 10:18 pm

MDT

STL

4h 56m

1 stop

$291Delta

Tue, Jun 23 - Tue, Jun 30

6:13 pm - 12:26 am

STL

MDT

5h 13m

1 stop

7:08 pm - 12:16 am

MDT

STL

6h 08m

1 stop

$300American Airlines

Wed, Jun 10 - Wed, Jun 17

5:03 pm - 11:59 pm

STL

MDT

5h 56m

1 stop

7:40 pm - 11:59 pm

MDT

STL

5h 19m

1 stop

$309American Airlines

Fri, Jun 12 - Tue, Jun 16

6:10 pm - 11:10 pm

STL

MDT

4h 00m

1 stop

6:04 am - 9:46 am

MDT

STL

4h 42m

1 stop

$310Delta

Fri, Jul 3 - Mon, Jul 6

6:45 am - 12:12 pm

STL

MDT

4h 27m

1 stop

6:04 am - 9:46 am

MDT

STL

4h 42m

1 stop

$315Delta

Tue, Jun 2 - Wed, Jul 1

6:00 am - 11:12 am

STL

MDT

4h 12m

1 stop

7:40 pm - 11:59 pm

MDT

STL

5h 19m

1 stop

$324American Airlines

Thu, Jun 4 - Sat, Jun 6

6:04 pm - 11:09 pm

STL

MDT

4h 05m

1 stop

6:00 am - 9:31 am

MDT

STL

4h 31m

1 stop

$325Delta

Sat, Jul 11 - Sat, Jul 18

6:00 am - 11:12 am

STL

MDT

4h 12m

1 stop

9:12 am - 1:56 pm

MDT

STL

5h 44m

1 stop

$339American Airlines

Thu, Jun 4 - Sat, Jun 6

7:03 am - 6:28 pm

STL

MDT

10h 25m

1 stop

7:40 pm - 11:59 pm

MDT

STL

5h 19m

1 stop

$343American Airlines

Wed, Jun 17 - Sat, Jun 20

5:20 pm - 11:51 pm

STL

MDT

5h 31m

1 stop

6:22 pm - 11:56 pm

MDT

STL

6h 34m

1 stop

$355Delta

Mon, Jun 1 - Wed, Jul 1

Delta flights from St. Louis to Harrisburg

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

Delta

Jun 23

STL6:00 amLambert-St Louis

4h 11m

1 stop

MDT11:11 amHarrisburg

Jun 30

MDT6:22 pmHarrisburg

4h 56m

1 stop

STL10:18 pmLambert-St Louis

$291

Delta

Jul 3

STL6:10 pmLambert-St Louis

4h 00m

1 stop

MDT11:10 pmHarrisburg

Jul 6

MDT6:04 amHarrisburg

4h 42m

1 stop

STL9:46 amLambert-St Louis

$310

Delta

Jun 2

STL10:19 amLambert-St Louis

4h 58m

1 stop

MDT4:17 pmHarrisburg

Jun 30

MDT6:22 pmHarrisburg

4h 56m

1 stop

STL10:18 pmLambert-St Louis

$315

United Airlines flights from St. Louis to Harrisburg

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

United Airlines

May 31

STL7:05 pmLambert-St Louis

4h 38m

1 stop

MDT12:43 amHarrisburg

Jun 30

MDT7:59 pmHarrisburg

4h 28m

1 stop

STL11:27 pmLambert-St Louis

$395

United Airlines

May 31

STL7:05 pmLambert-St Louis

4h 38m

1 stop

MDT12:43 amHarrisburg

Jun 29

MDT5:55 pmHarrisburg

4h 31m

1 stop

STL9:26 pmLambert-St Louis

$404

United Airlines

Aug 29

STL12:59 pmLambert-St Louis

6h 54m

1 stop

MDT8:53 pmHarrisburg

Sep 1

MDT5:54 pmHarrisburg

5h 06m

1 stop

STL10:00 pmLambert-St Louis

$415

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Tue 6/23

6:00 am-11:11 am

1 stop4h 11m

Harrisburg

Tue 6/30

6:22 pm-10:18 pm

1 stop4h 56m

$291

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Wed 6/10

6:13 pm-12:26 am

1 stop5h 13m

Harrisburg

Wed 6/17

7:08 pm-12:16 am

1 stop6h 08m

$300

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Fri 6/12

5:03 pm-11:59 pm

1 stop5h 56m

Harrisburg

Tue 6/16

7:40 pm-11:59 pm

1 stop5h 19m

$309

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Fri 7/3

6:10 pm-11:10 pm

1 stop4h 00m

Harrisburg

Mon 7/6

6:04 am-9:46 am

1 stop4h 42m

$310

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Tue 6/2

6:45 am-12:12 pm

1 stop4h 27m

Harrisburg

Wed 7/1

6:04 am-9:46 am

1 stop4h 42m

$315

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Thu 6/4

6:00 am-11:12 am

1 stop4h 12m

Harrisburg

Sat 6/6

7:40 pm-11:59 pm

1 stop5h 19m

$324

Quickest round-trip

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Sat 7/11

6:04 pm-11:09 pm

1 stop4h 05m

Harrisburg

Sat 7/18

6:00 am-9:31 am

1 stop4h 31m

$325

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Thu 6/4

6:00 am-11:12 am

1 stop4h 12m

Harrisburg

Sat 6/6

9:12 am-1:56 pm

1 stop5h 44m

$339

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Wed 6/17

7:03 am-6:28 pm

1 stop10h 25m

Harrisburg

Sat 6/20

7:40 pm-11:59 pm

1 stop5h 19m

$343

St. LouisHarrisburg

STL - MDT

STLMDT

Lambert-St Louis

Mon 6/1

5:20 pm-11:51 pm

1 stop5h 31m

Harrisburg

Wed 7/1

6:22 pm-11:56 pm

1 stop6h 34m

$355

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 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 $270. 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 $283.

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

As of May 2026, prices for St. Louis to Harrisburg flights are approximately 101% 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 00m
Direct flights	None

The fastest flight from St. Louis to Harrisburg takes 4h 00m

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 00m 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 May 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 (62% of total bookings). The next most popular airlines are Delta (21%) 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 11,648 reviews	Search American Airlines flights
Delta	PriceFrom $248	Free Cancellation	Rating 7.9 8,455 reviews	Search Delta flights
United Airlines	PriceFrom $260	Free Cancellation	Rating 7.4 9,734 reviews	Search United Airlines flights

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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.