$198 Cheap Flights from St. Louis (STL) to Kailua-Kona (KOA)

View $198 flight on Mon, Feb 9, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at $198 for one-way flights and $385 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Bargain Flight
Tue, Jan 13 - Wed, Jan 21
STL
St. Louis
KOA
Kona Coast
$385 Roundtrip, found 6 days ago
$385
Roundtrip
found 6 days ago
Select Bargain Flight flight, departing Tue, Jan 13 from St. Louis to Kona Coast, returning Wed, Jan 21, priced at $385 found 6 days ago
Bargain Flight
Tue, Dec 9 - Tue, Dec 16
STL
St. Louis
KOA
Kona Coast
$395 Roundtrip, found 1 hour ago
$395
Roundtrip
found 1 hour ago
Select Bargain Flight flight, departing Tue, Dec 9 from St. Louis to Kona Coast, returning Tue, Dec 16, priced at $395 found 1 hour ago
Bargain Flight
Tue, Jan 6 - Tue, Jan 13
STL
St. Louis
KOA
Kona Coast
$397 Roundtrip, found 14 hours ago
$397
Roundtrip
found 14 hours ago
Select Bargain Flight flight, departing Tue, Jan 6 from St. Louis to Kona Coast, returning Tue, Jan 13, priced at $397 found 14 hours ago
Bargain Flight
Wed, Feb 18 - Wed, Feb 25
STL
St. Louis
KOA
Kona Coast
$403 Roundtrip, found 7 hours ago
$403
Roundtrip
found 7 hours ago
Select Bargain Flight flight, departing Wed, Feb 18 from St. Louis to Kona Coast, returning Wed, Feb 25, priced at $403 found 7 hours ago
Bargain Flight
Mon, Sep 8 - Tue, Oct 21
STL
St. Louis
KOA
Kona Coast
$407 Roundtrip, found 18 hours ago
$407
Roundtrip
found 18 hours ago
Select Bargain Flight flight, departing Mon, Sep 8 from St. Louis to Kona Coast, returning Tue, Oct 21, priced at $407 found 18 hours ago
United
Tue, Dec 9 - Tue, Dec 16
STL
St. Louis
KOA
Kona Coast
$409 Roundtrip, found 1 hour ago
$409
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Dec 9 from St. Louis to Kona Coast, returning Tue, Dec 16, priced at $409 found 1 hour ago
Southwest Airlines
Wed, Nov 26 - Wed, Dec 3
STL
St. Louis
KOA
Kona Coast
$409 Roundtrip, found 5 days ago
$409
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Wed, Nov 26 from St. Louis to Kona Coast, returning Wed, Dec 3, priced at $409 found 5 days ago
American Airlines
Mon, Nov 17 - Wed, Nov 26
STL
St. Louis
KOA
Kona Coast
$409 Roundtrip, found 11 hours ago
$409
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Mon, Nov 17 from St. Louis to Kona Coast, returning Wed, Nov 26, priced at $409 found 11 hours ago
Alaska Airlines
Thu, Jan 15 - Fri, Jan 23
STL
St. Louis
KOA
Kona Coast
$411 Roundtrip, found 6 days ago
$411
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Jan 15 from St. Louis to Kona Coast, returning Fri, Jan 23, priced at $411 found 6 days ago
United
Tue, Dec 9 - Tue, Dec 16
STL
St. Louis
KOA
Kona Coast
$413 Roundtrip, found 1 hour ago
$413
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Dec 9 from St. Louis to Kona Coast, returning Tue, Dec 16, priced at $413 found 1 hour ago

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 $572
KOA
Kona Intl.
Cheapest
Flights from $572
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
$385
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 $198 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?
Lock in a cheap one-way flight from $198 or cheap return flight from $385 from Lambert-St. Louis Intl. Airport (STL) to Kona Intl. Airport (KOA) 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 Kona Intl. Airport (KOA)?
January is the cheapest month to fly from STL to KOA. Traveling during an off-peak travel window is often the key to scoring lower fares.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Kona Intl. Airport (KOA)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest STL to KOA flight.
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.