Cheap flights from St. Louis to Harrisburg from $154
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Harrisburg departing on 7/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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
What is the cheapest month to fly to Harrisburg?
The month of October is, on average, the cheapest month to fly to Harrisburg from St. Louis, with most prices found around $275. If you aren’t able to travel to Harrisburg during the month of October, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $288.
What is the cheapest day to depart on your flight to Harrisburg?
The cheapest day to depart from St. Louis to Harrisburg is on a Thursday. Travelers who choose to depart for Harrisburg on a Thursday will often find tickets for as low as $298. On the other hand, Sunday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $413.
What is the cheapest time of day to depart on your flight to Harrisburg?
Our data shows that the cheapest St. Louis to Harrisburg flights are usually those with departure times in the morning. Our users have found flights to Harrisburg in the morning for as low as $316. Try not to purchase tickets at noon because they tend to be around $387. Of course, these prices can vary depending on the time of year and what airport you fly to.
How have St. Louis to Harrisburg flight prices changed over time?
As of June 2025, prices for St. Louis to Harrisburg flights are approximately 11% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Lambert-St Louis to Harrisburg?
Frontier, American Airlines, and Delta 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 42% 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 to book flights from St. Louis to Harrisburg
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
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 09m 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 June 2025.
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 (63% of total bookings). The next most popular airlines are Delta (22%) and United Airlines (14%).
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 | ||
|---|---|---|---|---|---|
| PriceFrom $211 | Free Cancellation | Rating 8.0 7,946 reviews | |||
| PriceFrom $248 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $248 | Free Cancellation | Rating 7.4 8,790 reviews |
Traveling to a place near Harrisburg?
Book flights to Harrisburg if you plan to visit one of these locationsWhy 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.