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Kailua-Kona

$221+ Cheap flights from St. Louis to Kailua-Kona (STL - KOA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — KOA
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Kona Intl are usually found in September or April, booked 69 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Find flight deals from St. Louis to Kailua-Kona

Cheapest flights from St. Louis to Kailua-Kona
Explore the most affordable flight options available from St. Louis to Kailua-Kona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 27, 2025.

This American Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/167:00 amSTL - KOA
1 stop12h 02mAmerican Airlines
Thu 11/206:25 pmKOA - STL
1 stop12h 14mAmerican Airlines
Deal found 10/26$441
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/289:00 amSTL - KOA
1 stop11h 18mUnited Airlines
Wed 12/38:55 pmKOA - STL
1 stop11h 44mUnited Airlines
Deal found 10/25$473
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/299:00 amSTL - KOA
1 stop11h 18mUnited Airlines
Tue 11/118:55 pmKOA - STL
1 stop11h 44mUnited Airlines
Deal found 10/25$503
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/46:00 amSTL - KOA
2 stops17h 53mDelta
Tue 11/118:30 pmKOA - STL
2 stops13h 01mDelta
Deal found 10/27$512
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/296:00 amSTL - KOA
2 stops16h 30mDelta
Tue 11/118:30 pmKOA - STL
2 stops15h 37mDelta
Deal found 10/27$514
This American Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/285:17 amSTL - KOA
2 stops15h 30mAmerican Airlines
Wed 12/39:55 pmKOA - STL
2 stops14h 24mAmerican Airlines
Deal found 10/25$528
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/79:00 amSTL - KOA
1 stop11h 18mUnited Airlines
Fri 11/148:55 pmKOA - STL
1 stop11h 44mUnited Airlines
Deal found 10/26$531

Cheap flight deals from St. Louis to Kailua-Kona

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Kailua-Kona (KOA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 27, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$414
(Delta)

One-way from

$221
(American Airlines)

Popular in

July

Cheapest in

September

Average price

$516
Provider with most accurate pricing for Lambert-St Louis-Kona Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Kona Intl flights.
Search Deals
From Lambert-St Louis to Kona Intl
Search Deals
One-way flight from Lambert-St Louis to Kona Intl
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($125 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Kailua-Kona that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 27, 2025.
Use the filters below to find and compare flights from St. Louis to Kailua-Kona that are best for you.

Fly from

St. Louis

Fly to

Kailua-Kona

Route

Depart

Return

Price

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Sun 11/16

7:21 am-4:47 pm

1 stop13h 26m

Kona Intl

Thu 11/20

9:35 pm-1:40 pm

1 stop12h 05m

$441

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Fri 1/9

7:00 am-6:00 pm

2 stops15h 00m

Kona Intl

Fri 1/23

8:45 pm-4:55 pm

2 stops16h 10m

$453

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Fri 11/28

9:00 am-4:18 pm

1 stop11h 18m

Kona Intl

Wed 12/3

8:55 pm-2:23 pm

2 stops13h 28m

$478

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Fri 1/9

6:00 am-3:48 pm

1 stop13h 48m

Kona Intl

Fri 1/23

7:00 pm-11:03 am

1 stop12h 03m

$481

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Sat 1/24

7:04 am-2:54 pm

1 stop11h 50m

Kona Intl

Sat 1/31

6:30 pm-11:03 am

1 stop12h 33m

$481

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Thu 1/15

8:45 am-4:41 pm

1 stop11h 56m

Kona Intl

Mon 1/19

3:59 pm-9:22 am

2 stops13h 23m

$486

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Sun 11/9

7:21 am-4:47 pm

1 stop13h 26m

$221

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Sun 11/9

6:00 am-7:25 pm

2 stops17h 25m

$226

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Thu 1/8

7:15 am-3:48 pm

1 stop12h 33m

$241

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Thu 1/8

6:00 am-6:30 pm

2 stops16h 30m

$246

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 13 results
1
2

Compare providers for flights from St. Louis to Kailua-Kona

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Kailua-Kona in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Kailua-Kona flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Kailua-Kona flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Kailua-Kona flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Kailua-Kona flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Kailua-Kona flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Have a flexible travel schedule? Discover the best time to fly to Kailua-Kona from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Kailua-Kona

How far ahead should I book a flight from St. Louis to Kailua-Kona?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Kailua-Kona. Price data was last updated on October 24, 2025.

To ensure you get the cheapest price possible for a flight from St. Louis to Kailua-Kona, you should look to book at least 69 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from St. Louis to Kailua-Kona?

Currently, October is the cheapest month in which you can book a flight from St. Louis to Kailua-Kona (average of $274). Flying from St. Louis to Kailua-Kona in July is currently the most expensive (average of $633). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to KOA?

Find hourly flight availability from St. Louis to Kailua-Kona. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 27, 2025.

It’s optimal to fly from St. Louis to Kailua-Kona in the evening. By choosing this option you can save up to 49% on the cost of your flight, compared to a flight in the afternoon.

Reviews of airlines servicing Kailua-Kona

Get insights into the airlines that provide service to Kailua-Kona. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kailua-Kona. Reviews last updated October 27, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from St. Louis to Kailua-Kona have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,197 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
11,197 reviews
Alaska Airlines
8.0
Very good
11,197 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Southwest
8.0
Very good
4,236 reviews
Alaska Airlines
8.0
Very good
11,197 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Delta
7.9
Good
7,996 reviews
Alaska Airlines
8.0
Very good
11,197 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
United Airlines
7.4
Good
8,997 reviews
Alaska Airlines
8.0
Very good
11,197 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
American Airlines
7.2
Good
11,033 reviews
Alaska Airlines
8.0
Very good
11,197 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Kailua-Kona. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from St. Louis to Kailua-Kona?

    A quick flight from St. Louis to Kailua-Kona can take about 13h 26m. American Airlines provides one of the quickest options available for as low as $441. St. Louis and Kailua-Kona are separated by a distance of 4080 mi.

  • What are the cheapest airlines flying from St. Louis to Kailua-Kona round-trip?

    Flying on United Airlines is currently your cheapest option to Kailua-Kona, with prices starting at $399. Additional round-trip tickets that might be worth considering are offered by American Airlines and Alaska Airlines, with the lowest prices starting at $401 and $421, respectively. United Airlines is 33% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from St. Louis to Kailua-Kona that include hotel bookings?

    Yes. In addition to deals on St. Louis to Kailua-Kona flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Kailua-Kona?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Kailua-Kona.

  • Can I find deals for business class flights from St. Louis to Kailua-Kona?

    Yes. Cheapflights offers flight deals from St. Louis to Kailua-Kona by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Kailua-Kona?

    Currently, October is the cheapest month in which you can book a flight from St. Louis to Kailua-Kona (average of $274). Flying from St. Louis to Kailua-Kona in July is currently the most expensive (average of $633). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 5 airlines flying from St. Louis to Kailua-Kona

Discover the top 5 airlines that operate flights from St. Louis to Kailua-Kona. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$399Average$654FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$401Average$579FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$421Average$551FlexibilityNo cancel feeOn-time75%
DeltaCheapest$422Average$564FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$481Average$745FlexibilityNo cancel feeOn-time63%

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