$177 Cheap Flights from St. Louis (STL) to Hays (HYS)

View $177 flight on Mon, Nov 3, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Hays, KS (HYS-Hays Regional)

Cheap Flights from St. Louis to Hays (STL-HYS)

Prices were available within the past 7 days and start at $177 for one-way flights and $274 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Nov 3 - Tue, Nov 18
STL
St. Louis
HYS
Hays
$274 Roundtrip, found 17 hours ago
$274
Roundtrip
found 17 hours ago
Select United flight, departing Mon, Nov 3 from St. Louis to Hays, returning Tue, Nov 18, priced at $274 found 17 hours ago
United
Sat, Oct 11 - Sat, Oct 25
STL
St. Louis
HYS
Hays
$279 Roundtrip, found 22 hours ago
$279
Roundtrip
found 22 hours ago
Select United flight, departing Sat, Oct 11 from St. Louis to Hays, returning Sat, Oct 25, priced at $279 found 22 hours ago
United
Thu, Oct 2 - Wed, Oct 22
STL
St. Louis
HYS
Hays
$294 Roundtrip, found 22 hours ago
$294
Roundtrip
found 22 hours ago
Select United flight, departing Thu, Oct 2 from St. Louis to Hays, returning Wed, Oct 22, priced at $294 found 22 hours ago
United
Wed, Oct 1 - Wed, Oct 22
STL
St. Louis
HYS
Hays
$304 Roundtrip, found 22 hours ago
$304
Roundtrip
found 22 hours ago
Select United flight, departing Wed, Oct 1 from St. Louis to Hays, returning Wed, Oct 22, priced at $304 found 22 hours ago
United
Mon, Nov 17 - Tue, Dec 2
STL
St. Louis
HYS
Hays
$339 Roundtrip, found 17 hours ago
$339
Roundtrip
found 17 hours ago
Select United flight, departing Mon, Nov 17 from St. Louis to Hays, returning Tue, Dec 2, priced at $339 found 17 hours ago
United
Wed, Oct 29 - Sat, Nov 8
STL
St. Louis
HYS
Hays
$349 Roundtrip, found 23 hours ago
$349
Roundtrip
found 23 hours ago
Select United flight, departing Wed, Oct 29 from St. Louis to Hays, returning Sat, Nov 8, priced at $349 found 23 hours ago
United
Mon, Oct 27 - Wed, Oct 29
STL
St. Louis
HYS
Hays
$351 Roundtrip, found 17 hours ago
$351
Roundtrip
found 17 hours ago
Select United flight, departing Mon, Oct 27 from St. Louis to Hays, returning Wed, Oct 29, priced at $351 found 17 hours ago
United
Sat, Oct 11 - Tue, Oct 28
STL
St. Louis
HYS
Hays
$355 Roundtrip, found 22 hours ago
$355
Roundtrip
found 22 hours ago
Select United flight, departing Sat, Oct 11 from St. Louis to Hays, returning Tue, Oct 28, priced at $355 found 22 hours ago
United
Fri, Oct 31 - Sat, Nov 8
STL
St. Louis
HYS
Hays
$357 Roundtrip, found 17 hours ago
$357
Roundtrip
found 17 hours ago
Select United flight, departing Fri, Oct 31 from St. Louis to Hays, returning Sat, Nov 8, priced at $357 found 17 hours ago
United
Thu, Oct 2 - Sat, Oct 18
STL
St. Louis
HYS
Hays
$359 Roundtrip, found 22 hours ago
$359
Roundtrip
found 22 hours ago
Select United flight, departing Thu, Oct 2 from St. Louis to Hays, returning Sat, Oct 18, priced at $359 found 22 hours ago

Alternative airports near Hays

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Hays Regional HYS. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $384
HYS
Hays Regional
CheapestClosest
Average driving time to city center8 min
Flights from $384

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Hays Regional Airport (HYS) cost?
Get a cheap one-way flight from $177 or cheap return flight from $274 from Lambert-St. Louis Intl. Airport (STL) to Hays Regional Airport (HYS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Hays Regional Airport (HYS)?
November is the most affordable month to fly from STL to HYS. Traveling during an off-peak travel window is often the key to better flight prices.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Hays Regional Airport (HYS)?
To find the cheapest airline flying from STL to HYS, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Hays Regional Airport (HYS)?
Nonstop flights from Lambert-St. Louis Intl. Airport (STL) to Hays Regional Airport (HYS) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to HYS?
Usually you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can vary based on the airline, time of year 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 Hays Regional Airport (HYS)?
Choose a flight from Lambert-St. Louis Intl. Airport (STL) to Hays Regional Airport (HYS) that leaves before 3 PM to reduce the risk of cancellations. Departures after this time are on average 22% more likely to be canceled.**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 Hays Regional Airport (HYS) last-minute?
Last-minute bookings from STL to HYS are generally more expensive. To lock in the best rates, start looking for flights early. That said, if you're flexible with your travel plans, it's possible to land a cheap ticket right before your trip.
Is it cheaper to book a STL to HYS flight and hotel package?
You'll generally save money by booking a STL to HYS flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. Once you've selected your ideal flights and accommodations, you can add extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Hays Regional Airport (HYS)?
It's generally possible to reschedule or cancel your STL to HYS flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Hays Regional
Airlines serving
United
Roundtrip price
$273
Distance
479 mi

Book with confidence

Book with confidence

St. Louis to Hays Flights

The cheapest times to fly from St. Louis to Hays

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 Hays are during the month of November. You can find some of the cheapest flights from St. Louis to Hays with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from St. Louis to Hays: 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 Hays

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 Hays in 2025. You can also book with separate airlines for your outbound and return journeys, from $177 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 Hays 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 Hays 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 Hays Flights

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*Available to One Key members.