$205 Cheap Flights from St. Louis (STL) to Kailua-Kona (KOA)

View $205 flight on Tue, Sep 16, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Kona Intl. Airport (KOA)

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Cheap Flights from St. Louis to Kailua-Kona (STL-KOA)

Prices were available within the past 7 days and start at $205 for one-way flights and $391 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Bargain Flight
Wed, Jan 7 - Wed, Jan 21
STL
St. Louis
KOA
Kona Coast
$391 Roundtrip, found 6 hours ago
$391
Roundtrip
found 6 hours ago
Select Bargain Flight flight, departing Wed, Jan 7 from St. Louis to Kona Coast, returning Wed, Jan 21, priced at $391 found 6 hours ago
Bargain Flight
Tue, Jan 6 - Tue, Jan 13
STL
St. Louis
KOA
Kona Coast
$395 Roundtrip, found 5 days ago
$395
Roundtrip
found 5 days ago
Select Bargain Flight flight, departing Tue, Jan 6 from St. Louis to Kona Coast, returning Tue, Jan 13, priced at $395 found 5 days ago
Bargain Flight
Tue, Jan 6 - Tue, Jan 13
STL
St. Louis
KOA
Kona Coast
$396 Roundtrip, found 5 days ago
$396
Roundtrip
found 5 days ago
Select Bargain Flight flight, departing Tue, Jan 6 from St. Louis to Kona Coast, returning Tue, Jan 13, priced at $396 found 5 days ago
Bargain Flight
Tue, Jan 13 - Fri, Jan 16
STL
St. Louis
KOA
Kona Coast
$402 Roundtrip, found 2 days ago
$402
Roundtrip
found 2 days ago
Select Bargain Flight flight, departing Tue, Jan 13 from St. Louis to Kona Coast, returning Fri, Jan 16, priced at $402 found 2 days ago
United
Tue, Dec 2 - Wed, Dec 10
STL
St. Louis
KOA
Kona Coast
$409 Roundtrip, found 11 hours ago
$409
Roundtrip
found 11 hours ago
Select United flight, departing Tue, Dec 2 from St. Louis to Kona Coast, returning Wed, Dec 10, priced at $409 found 11 hours ago
Hawaiian Airlines
Sun, Oct 26 - Thu, Oct 30
STL
St. Louis
KOA
Kona Coast
$409 Roundtrip, found 21 hours ago
$409
Roundtrip
found 21 hours ago
Select Hawaiian Airlines flight, departing Sun, Oct 26 from St. Louis to Kona Coast, returning Thu, Oct 30, priced at $409 found 21 hours ago
American Airlines
Mon, Nov 17 - Wed, Nov 26
STL
St. Louis
KOA
Kona Coast
$409 Roundtrip, found 8 hours ago
$409
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Mon, Nov 17 from St. Louis to Kona Coast, returning Wed, Nov 26, priced at $409 found 8 hours ago
United
Tue, Dec 2 - Wed, Dec 10
STL
St. Louis
KOA
Kona Coast
$414 Roundtrip, found 11 hours ago
$414
Roundtrip
found 11 hours ago
Select United flight, departing Tue, Dec 2 from St. Louis to Kona Coast, returning Wed, Dec 10, priced at $414 found 11 hours ago
Southwest Airlines
Tue, Dec 9 - Tue, Dec 16
STL
St. Louis
KOA
Kona Coast
$414 Roundtrip, found 12 hours ago
$414
Roundtrip
found 12 hours ago
Select Southwest Airlines flight, departing Tue, Dec 9 from St. Louis to Kona Coast, returning Tue, Dec 16, priced at $414 found 12 hours ago
Hawaiian Airlines
Mon, Sep 15 - Fri, Sep 26
STL
St. Louis
KOA
Kona Coast
$415 Roundtrip, just found
$415
Roundtrip
just found
Select Hawaiian Airlines flight, departing Mon, Sep 15 from St. Louis to Kona Coast, returning Fri, Sep 26, priced at $415 just found

Find the cheapest month to fly from St. Louis (STL) to Kailua-Kona (KOA)

January is typically the cheapest month to fly

From $369 - $792 per traveler.

Graph displaying average flight prices per month

Alternative airports near Kailua-Kona

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

Select flight to Kona Intl. KOA. Cheapest option available. Flights from $500
KOA
Kona Intl.
Cheapest
Flights from $500
Flights from St. Louis (STL) to Kailua-Kona (KOA)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Kona Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, Southwest Airlines, United
Roundtrip price
$390
Distance
4082 mi

St. Louis to Kailua-Kona Flights

The cheapest times to fly from St. Louis to Kailua-Kona

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

 

The best time to book a flight from St. Louis to Kailua-Kona

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

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 Kailua-Kona in 2025. You can also book with separate airlines for your outbound and return journeys, from $205 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 Kailua-Kona 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 Kailua-Kona 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.

 

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Kona Intl. Airport (KOA) cost?
Discover the latest flight deals from STL to KOA by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from STL to KOA?
The cheapest flights from STL to KOA are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from STL to KOA?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from STL to KOA. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Kona Intl. Airport (KOA)?
You'll need to catch a flight with a layover when traveling from Lambert-St. Louis Intl. Airport (STL) to Kona Intl. Airport (KOA). There are no daily direct flights on this route. However, just filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from STL to KOA?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary depending on various factors, including the season and airline.*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 Kona Intl. Airport (KOA)?
Book a flight from Lambert-St. Louis Intl. Airport (STL) to Kona Intl. Airport (KOA) that leaves before 3 PM to reduce the risk of delays and cancellations. Departures after this hour 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 Kona Intl. Airport (KOA) last-minute?
Holding off until just before your departure to book a ticket from STL to KOA generally means paying more. While you might find some last-minute deals, they aren't always guaranteed. Keep your travel schedule open to maximize your chances of snagging a bargain.
Is it cheaper to book a STL to KOA flight and hotel package?
Opting for a STL to KOA flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Select from our extensive range of hotels and then add activities, flights and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Kona Intl. Airport (KOA)?
If you booked your STL to KOA flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you want more information.

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*Available to One Key members.