$643 Cheap Flights from St. Louis (STL) to Harrison (HRO)

View $643 flight on Wed, Oct 15, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Harrison, AR (HRO-Boone County Regional)

Cheap Flights from St. Louis to Harrison (STL-HRO)

Prices were available within the past 7 days and start at $643 for one-way flights and $1,297 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Oct 11 - Wed, Oct 15
STL
St. Louis
HRO
Harrison
$1,297 Roundtrip, found 5 days ago
$1,297
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Sat, Oct 11 from St. Louis to Harrison, returning Wed, Oct 15, priced at $1,297 found 5 days ago

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Boone County Regional Airport (HRO) cost?
Lock in a cheap one-way flight from $643 or cheap return flight from $1,297 from Lambert-St. Louis Intl. Airport (STL) to Boone County Regional Airport (HRO) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Boone County Regional Airport (HRO)?
October is the least expensive month to fly from STL to HRO. Traveling outside of peak seasons is often the key to finding better deals on flights.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Boone County Regional Airport (HRO)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll fly you from STL to HRO. Then, sort your results by "Price (lowest to highest)" to pick up the best deal available.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Boone County Regional Airport (HRO)?
There aren't any daily nonstop flights available from Lambert-St. Louis Intl. Airport (STL) to Boone County Regional Airport (HRO). But you can choose flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be on your way before you know it.
What day of the week has the most flights from STL to HRO?
Generally you'll find the most flight options available on a Friday. Tuesdays are often the quietest.* But this can vary based on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Boone County Regional Airport (HRO)?
To avoid possible delays on the Lambert-St. Louis Intl. Airport (STL) to Boone County Regional Airport (HRO) route, aim to fly before 3 PM. Flights after this time have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Boone County Regional Airport (HRO) last-minute?
Booking your plane ticket from STL to HRO right before your getaway is typically more expensive. But if you're flexible with your departure times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book a STL to HRO flight and hotel package?
Compared with arranging flights and hotels separately, booking a STL to HRO flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one place will take the stress out of travel planning. Just secure your flights and choose from our extensive range of hotels, then tailor your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Boone County Regional Airport (HRO)?
In most instances, you can cancel or reschedule your STL to HRO flight. However, additional charges may apply, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you'd like further information, visit our Customer Service portal.

Travel information

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Boone County Regional
Roundtrip price
$1,297
Distance
229 mi

Book with confidence

Book with confidence

St. Louis to Harrison Flights

The cheapest times to fly from St. Louis to Harrison

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Harrison are during the month of October. You can find some of the cheapest flights from St. Louis to Harrison with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Harrison

Sunday is one of the best days to book for cheap flights from St. Louis to Harrison: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Harrison

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Harrison in 2025. You can also book with separate airlines for your outbound and return journeys, from $643 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Harrison flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Harrison airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Louis to Harrison Flights

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*Available to One Key members.