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Kailua-Kona

$207+ 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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
STL — KOA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Kona Intl are usually found in November or February, booked 63 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 June 12, 2025.

Round-trip from

$403
(American Airlines)

One-way from

$207
(American Airlines)

Popular in

July

Cheapest in

November

Average price

$771
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 ($128 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 11/106:15 amSTL - KOA
1 stop12h 49mAmerican Airlines
Mon 11/179:25 pmKOA - STL
1 stop12h 09mAmerican Airlines
Deal found 6/11$403
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/289:00 amSTL - KOA
1 stop11h 18mUnited Airlines
Mon 11/38:55 pmKOA - STL
1 stop11h 44mUnited Airlines
Deal found 6/11$422
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/236:00 amSTL - KOA
2 stops16h 43mAlaska Airlines
Tue 9/307:11 pmKOA - STL
2 stops17h 23mAlaska Airlines
Deal found 6/10$432
This Southwest deal was found by Cheapflights users on 6/10. 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.
Tue 9/236:45 amSTL - KOA
1 stop10h 25mSouthwest
Tue 9/308:30 pmKOA - STL
1 stop10h 25mSouthwest
Deal found 6/10$545
This Delta deal was found by Cheapflights users on 6/9. 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.
Sat 10/187:20 amSTL - KOA
2 stops16h 20mDelta
Fri 10/248:40 pmKOA - STL
2 stops16h 22mDelta
Deal found 6/9$584

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 June 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 11/10

6:15 am-3:04 pm

1 stop12h 49m

Kona Intl

Mon 11/17

9:25 pm-1:34 pm

1 stop12h 09m

$403

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Tue 10/28

9:00 am-3:18 pm

1 stop11h 18m

Kona Intl

Mon 11/3

8:55 pm-12:39 pm

1 stop11h 44m

$422

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Tue 9/23

6:00 am-5:43 pm

2 stops16h 43m

Kona Intl

Tue 9/30

7:11 pm-5:34 pm

2 stops17h 23m

$432

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Tue 9/23

6:45 am-12:10 pm

1 stop10h 25m

Kona Intl

Tue 9/30

8:30 pm-11:55 am

1 stop10h 25m

$545

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Sat 10/18

7:20 am-6:40 pm

2 stops16h 20m

Kona Intl

Fri 10/24

8:40 pm-6:02 pm

2 stops16h 22m

$584

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Sun 10/19

6:33 am-1:54 pm

1 stop12h 21m

Kona Intl

Sat 10/25

8:00 am-11:59 pm

1 stop10h 59m

$960

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Tue 9/23

5:19 am-2:25 pm

2 stops14h 06m

$207

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Tue 9/23

6:00 am-4:34 pm

1 stop15h 34m

$261

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Sun 7/27

6:40 am-5:41 pm

2 stops16h 01m

$337

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Sat 7/5

6:00 am-11:31 am

1 stop10h 31m

$346

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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 June 9, 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 63 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 June 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 50% on the cost of your flight, compared to a flight in the afternoon.

Rainfall in Kailua-Kona by month

Plan your trip to Kailua-Kona by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Kailua-Kona ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. February is typically the driest time to visit Kailua-Kona when rainfall is around 1.6 in.

Temperature in Kailua-Kona by month

Plan your trip to Kailua-Kona by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Kailua-Kona, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 71.6 F).

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 June 12, 2025.
Read through reviews of airlines operating flights from St. Louis to Kailua-Kona, such as Alaska Airlines, Southwest and Delta. 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

Crew

8.5

Food

7.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,786 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    Flying on American Airlines is currently your cheapest option to Kailua-Kona, with prices starting at $403. Additional round-trip tickets that might be worth considering are offered by United Airlines and Alaska Airlines, with the lowest prices starting at $422 and $432, respectively. American Airlines is 31% 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 $207. Alaska Airlines flights start at $261 while deals on Delta start at $337 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

Browse thousands of different options on Cheapflights for your next trip

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$389Average$593FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$389Average$658FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$392Average$569FlexibilityNo cancel feeOn-time71%
DeltaCheapest$394Average$501FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$576Average$773FlexibilityNo cancel feeOn-time63%

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