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Kailua-Kona

$232+ 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
STL — KOA
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 January, 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

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 September 11, 2025.

Round-trip from

$403
(American Airlines)

One-way from

$232
(American Airlines)

Popular in

July

Cheapest in

September

Average price

$478
From Lambert-St Louis to Kona Intl
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One-way flight from Lambert-St Louis to Kona Intl
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Highest demand for flights based on searches. 17% potential increase in price ($125 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/10. 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.
Sun 11/167:21 amSTL - KOA
1 stop13h 26mAmerican Airlines
Thu 11/206:30 pmKOA - STL
1 stop10h 28mAmerican Airlines
Deal found 9/10$403
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/159:00 amSTL - KOA
1 stop11h 25mUnited Airlines
Thu 10/231:40 pmKOA - STL
2 stops16h 09mUnited Airlines
Deal found 9/9$409
This Hawaiian Airlines deal was found by Cheapflights users on 9/9. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/167:00 amSTL - KOA
1 stop14h 44mHawaiian Airlines
Thu 11/208:45 amKOA - STL
1 stop11h 14mHawaiian Airlines
Deal found 9/9$441
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/167:00 amSTL - KOA
1 stop14h 44mAlaska Airlines
Thu 11/206:00 amKOA - STL
2 stops13h 59mAlaska Airlines
Deal found 9/9$447
This American Airlines deal was found by Cheapflights users on 9/9. 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 10/246:39 amSTL - KOA
1 stop12h 19mAmerican Airlines
Wed 10/299:45 pmKOA - STL
2 stops15h 37mAmerican Airlines
Deal found 9/9$448
This Delta deal was found by Cheapflights users on 9/9. 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.
Fri 10/246:00 amSTL - KOA
2 stops16h 30mDelta
Wed 10/299:30 pmKOA - STL
2 stops16h 15mDelta
Deal found 9/9$453
This American Airlines deal was found by Cheapflights users on 9/10. 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 10/236:39 amSTL - KOA
1 stop12h 19mAmerican Airlines
Fri 10/319:45 pmKOA - STL
2 stops15h 26mAmerican Airlines
Deal found 9/10$468
This Southwest deal was found by Cheapflights users on 9/10. 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.
Thu 10/235:10 amSTL - KOA
1 stop12h 50mSouthwest
Fri 10/318:30 pmKOA - STL
1 stop10h 20mSouthwest
Deal found 9/10$481
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 9/245:18 amSTL - KOA
2 stops13h 24mAmerican Airlines
Wed 10/83:29 pmKOA - STL
2 stops12h 51mAmerican Airlines
Deal found 9/10$483

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 September 11, 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

6:30 pm-8:58 am

1 stop10h 28m

$403

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Wed 10/15

9:00 am-3:25 pm

1 stop11h 25m

Kona Intl

Thu 10/23

1:40 pm-10:49 am

2 stops16h 09m

$409

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Sun 11/16

7:00 am-5:44 pm

1 stop14h 44m

Kona Intl

Thu 11/20

8:45 am-11:59 pm

1 stop11h 14m

$441

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Sun 11/16

7:00 am-5:44 pm

1 stop14h 44m

Kona Intl

Thu 11/20

6:00 am-11:59 pm

2 stops13h 59m

$447

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Fri 10/24

6:39 am-1:58 pm

1 stop12h 19m

Kona Intl

Wed 10/29

9:45 pm-6:22 pm

2 stops15h 37m

$448

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Thu 9/25

6:20 am-1:42 pm

1 stop12h 22m

$232

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Thu 9/25

4:00 pm-2:10 pm

3 stops27h 10m

$271

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Sat 10/18

6:00 am-7:23 pm

2 stops18h 23m

$297

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Sat 10/18

3:57 pm-9:40 pm

1 stop34h 43m

$307

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Fri 9/19

8:00 am-2:25 pm

1 stop11h 25m

$311

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 12 results
1
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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 August 29, 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 $409). Flying from St. Louis to Kailua-Kona in June is currently the most expensive (average of $624). 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 September 11, 2025.

It’s optimal to fly from St. Louis to Kailua-Kona in the evening. By choosing this option you can save up to 50% 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 September 11, 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
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Southwest
8.0
Very good
4,248 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,937 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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 11h 25m. American Airlines provides one of the quickest options available for as low as $409. St. Louis and Kailua-Kona are separated by a distance of 4080 mi. This flight may include one or multiple stops.

  • 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 $389. Additional round-trip tickets that might be worth considering are offered by American Airlines and Alaska Airlines, with the lowest prices starting at $394 and $399, 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 $232. Delta flights start at $297 while deals on Alaska Airlines start at $307 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 $409). Flying from St. Louis to Kailua-Kona in June is currently the most expensive (average of $624). 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$389Average$650FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$394Average$583FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$399Average$569FlexibilityNo cancel feeOn-time75%
DeltaCheapest$422Average$552FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$481Average$773FlexibilityNo cancel feeOn-time63%

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