Flight tickets from Harrisburg International to St Louis

Compare Harrisburg International to St Louis flight deals

Find the cheapest month or even day of the year to fly to St Louis

Book the best St Louis fare with no extra fees

Flight deals from Harrisburg International to St Louis

Looking for a cheap last-minute deal or the best return flight from Harrisburg International Airport to St Louis Airport? If you want to travel next month, return fares start from ₹ 27,645. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Harrisburg International to St Louis

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Harrisburg International to St Louis flights are currently cheapest in June.

Harrisburg International to St Louis: Alternative routes

Compare routes from Harrisburg International to St Louis below. You may find an airport to fly into that's cheaper, faster, or easier than St Louis.

Harrisburg to St Louis: Flight information

The things to know before you go.
Cheapest flight found₹ 23,736
Cheapest month to flyJune

Finding cheap flights from Harrisburg International to St Louis: Frequently asked questions

The best price we found for a return flight from Harrisburg International to St Louis is ₹ 27,645. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Harrisburg International to St Louis. But we found flights with one or more stops from ₹ 27,645.
As of May 2026, there are no flights flying from Harrisburg International to St Louis.
The cheapest month to fly from Harrisburg International to St Louis is usually June.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Harrisburg International Airport to St Louis Airport on Wednesday, 10 June 2026.
No airlines currently offer direct flights between Harrisburg International Airport and St Louis Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to St Louis but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to St Louis is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Delta offers the cheapest flight tickets to St Louis.

Flying from Harrisburg International Airport (MDT) to Lambert-St. Louis International Airport (STL): what you need to know

  • St Louis's timezone is UTC-5, which makes St Louis one hour behind Harrisburg.

  • Arrive at the airport on time so you don't miss your MDT to STL flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid sprinting to your gate.

  • During popular months such as July, it's a good idea to get to the airport earlier than normal. Arrive two hours before a domestic departure and four hours ahead for an international flight whenever you're travelling during a peak period in general.

  • Think about adding a stopover when booking your ticket from Harrisburg International Airport to Lambert-St. Louis International Airport. Just deselect 'Direct flights only' to break up your trip, or maybe even explore a new city along the way. Here's where you can stop between MDT and STL:

    • Detroit Metropolitan Wayne County Airport

    • Washington Dulles International Airport

    • O'Hare International Airport

How to find the cheapest flights from Harrisburg International Airport (MDT) to Lambert-St. Louis International Airport (STL)

  • At the moment, ₹ 23,736 is the lowest price we've seen for a one-way Harrisburg International Airport to Lambert-St. Louis International Airport flight. The best price for a return ticket is ₹ 27,645. Remember that fares may change due to availability when booking.

  • Don't leave things to the last minute. You're more likely to find cheap tickets from MDT to STL if you book early. Airlines often offer some great early bird rates.

  • The 'Whole month' tool shows you the cheapest flights from Harrisburg International Airport to Lambert-St. Louis International Airport throughout the entire month. It's an easy way to find a bargain if your travel dates aren't set in stone.

  • Save time searching for cheap flights from MDT to STL by creating a Price Alert. You'll get an email or notification through the app when a lower fare pops up.

  • Lock in the ideal flight for you with the help of the filters. To see the 'Cheapest,' 'Fastest' or 'Best' flights from Harrisburg International Airport to Lambert-St. Louis International Airport, use the 'Sort by' function. You can also filter by departure and arrival times, airline, and journey duration.

Handy information about Harrisburg International Airport (MDT)

  • MDT's address is One Terminal Drive.

  • 77.41% of flights that leave from Harrisburg International Airport land at their destination on schedule.

  • To reach Harrisburg International Airport from central Harrisburg, it'll take around 20 minutes by car. This depends on traffic, however. It's approximately 19 kilometres from the airport to the city centre.

  • Catching public transport? Expect a journey time of around 40 minutes.

  • Searching for a handy hotel close to MDT? If you're catching an early flight from Harrisburg International Airport to Lambert-St. Louis International Airport, these stays will put you moments from your departure gate:

Arriving at Lambert-St. Louis International Airport (STL)

Getting from Lambert-St. Louis International Airport (STL) to central St Louis

  • You'll find STL at 10701 Lambert International Blvd..

  • From Lambert-St. Louis International Airport, St Louis is approximately 26 kilometres away. It takes around 20 minutes to drive to the centre.

  • Travelling on public transport will take you around 35 minutes.

When to fly to Lambert-St. Louis International Airport (STL)

  • It's time to plan your trip dates for your flight from Harrisburg International Airport to Lambert-St. Louis International Airport. July is the busiest month to visit St Louis. If you want a more laid-back vibe, go in April.

  • The warmest month in St Louis is July, with the temperature ranging between 17ºC and 33ºC. Book your flights from Harrisburg International Airport to Lambert-St. Louis International Airport in this month if this is the type of weather you enjoy.

  • January has average temperatures of between -8ºC and 7ºC. Look for cheap tickets from MDT to STL sometime around then if you want to travel when it's cooler.

Explore more of United States

  • Chicago is just one of the many cities in United States waiting to be discovered after you've experienced St Louis. Around 418 kilometres away to the north-east, check out popular attractions including Millennium Park, Art Institute of Chicago and LandShark Beer Garden at Navy Pier.

  • If there's time to check out another great destination in United States, head for Indianapolis, roughly 370 kilometres east of St Louis. The Children's Museum of Indianapolis, Indianapolis Museum of Art and Indianapolis Zoo are key highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.