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Kailua-Kona

$223+ 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 1/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — KOA
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
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

Cheap 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 December 12, 2025.

This Southwest deal was found by Cheapflights users on 12/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/165:00 amSTL - KOA
1 stop12h 40mSouthwest
Tue 12/239:15 pmKOA - STL
1 stop10h 40mSouthwest
Deal found 12/11$725
This Delta deal was found by Cheapflights users on 12/11. 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 12/166:30 amSTL - KOA
2 stops17h 00mDelta
Tue 12/2310:55 pmKOA - STL
2 stops18h 39mDelta
Deal found 12/11$815
This American Airlines deal was found by Cheapflights users on 12/11. 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 12/288:00 amSTL - KOA
1 stop14h 51mAmerican Airlines
Wed 12/316:30 pmKOA - STL
1 stop12h 20mAmerican Airlines
Deal found 12/11$881
This Southwest deal was found by Cheapflights users on 12/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/225:05 amSTL - KOA
1 stop12h 35mSouthwest
Sun 1/49:15 pmKOA - STL
1 stop9h 55mSouthwest
Deal found 12/10$913
This American Airlines deal was found by Cheapflights users on 12/10. 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.
Thu 12/258:00 amSTL - KOA
1 stop14h 51mAmerican Airlines
Mon 12/2910:09 pmKOA - STL
1 stop11h 47mAmerican Airlines
Deal found 12/10$946
This Southwest deal was found by Cheapflights users on 12/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/225:05 amSTL - KOA
1 stop12h 35mSouthwest
Mon 1/59:15 pmKOA - STL
1 stop10h 25mSouthwest
Deal found 12/10$948
This Delta deal was found by Cheapflights users on 12/10. 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.
Thu 12/257:20 amSTL - KOA
1 stop12h 28mDelta
Mon 12/299:55 pmKOA - STL
2 stops19h 39mDelta
Deal found 12/10$1,068
This Southwest deal was found by Cheapflights users on 12/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/285:05 amSTL - KOA
2 stops17h 05mSouthwest
Wed 12/319:15 pmKOA - STL
2 stops11h 50mSouthwest
Deal found 12/11$1,069
This United Airlines deal was found by Cheapflights users on 12/10. 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.
Mon 12/222:45 pmSTL - KOA
2 stops26h 23mUnited Airlines
Mon 1/52:23 pmKOA - STL
2 stops20h 07mUnited Airlines
Deal found 12/10$1,174

Find 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$374
(Delta)

One-way from

$240
(United Airlines)

Popular in

June

Cheapest in

September

Average price

$666
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. 15% potential increase in price ($112 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 12, 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

Mon 2/23

7:00 am-7:34 pm

2 stops16h 34m

Kona Intl

Tue 3/10

8:55 pm-5:07 pm

2 stops15h 12m

$374

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Thu 1/22

6:10 am-6:47 pm

2 stops16h 37m

Kona Intl

Mon 1/26

8:45 pm-2:38 pm

2 stops13h 53m

$384

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Mon 2/2

6:40 am-3:51 pm

1 stop13h 11m

Kona Intl

Thu 2/12

8:59 pm-5:48 pm

2 stops16h 49m

$398

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Tue 2/3

6:35 am-7:57 pm

2 stops17h 22m

Kona Intl

Tue 2/17

8:59 pm-2:56 pm

2 stops13h 57m

$406

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Tue 2/3

6:35 am-7:57 pm

2 stops17h 22m

Kona Intl

Tue 2/10

10:55 pm-9:38 pm

2 stops18h 43m

$419

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Thu 1/1

9:00 am-4:41 pm

1 stop11h 41m

$223

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Thu 2/19

7:00 am-3:26 pm

1 stop12h 26m

$223

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Wed 12/31

9:00 am-4:41 pm

1 stop11h 41m

$223

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Sun 1/18

8:45 am-4:41 pm

1 stop11h 56m

$240

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Sun 1/18

10:09 pm-5:57 pm

3 stops47h 48m

$250

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/8

Showing 1-10 of 11 results
1
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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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Kailua-Kona flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 December 5, 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 $634). 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 December 12, 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 December 12, 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
11,432 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,432 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Southwest
7.9
Good
4,253 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,008 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,095 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
American Airlines
7.2
Good
11,050 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

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 16h 34m. Delta provides one of the quickest options available for as low as $374. 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 $409 and $421, respectively. United Airlines is 35% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from St. Louis to Kailua-Kona one-way?

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $210. Southwest flights start at $210 while deals on United Airlines start at $220 one-way.

  • 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 $634). 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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Alternative routes for St. Louis to Kailua-Kona

See prices for flight routes from nearby airports that may be better suited for you.
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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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$401Average$648FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$409Average$613FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$421Average$562FlexibilityNo cancel feeOn-time75%
DeltaCheapest$422Average$564FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$481Average$738FlexibilityNo cancel feeOn-time63%

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