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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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
STL — KOA
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
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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 January 26, 2026.

This United Airlines deal was found by Cheapflights users on 1/25. 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 2/188:41 am
STL
-
KOA
1 stop11h 53m
United Airlines
Wed 3/48:55 pm
KOA
-
STL
1 stop12h 24m
United Airlines
Deal found 1/25$422
This United Airlines deal was found by Cheapflights users on 1/23. 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 4/288:54 am
STL
-
KOA
1 stop11h 36m
United Airlines
Mon 5/48:00 pm
KOA
-
STL
1 stop12h 13m
United Airlines
Deal found 1/23$423
This Delta deal was found by Cheapflights users on 1/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/97:15 am
STL
-
KOA
2 stops16h 22m
Delta
Mon 3/167:40 pm
KOA
-
STL
1 stop12h 51m
Delta
Deal found 1/25$429
This Delta deal was found by Cheapflights users on 1/24. 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.
Mon 4/277:02 am
STL
-
KOA
2 stops17h 01m
Delta
Thu 5/78:40 pm
KOA
-
STL
2 stops16h 20m
Delta
Deal found 1/24$433
This Delta deal was found by Cheapflights users on 1/24. 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 4/307:02 am
STL
-
KOA
2 stops17h 01m
Delta
Tue 5/58:50 pm
KOA
-
STL
2 stops15h 00m
Delta
Deal found 1/24$434
This Delta deal was found by Cheapflights users on 1/24. 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 4/237:02 am
STL
-
KOA
2 stops17h 01m
Delta
Mon 5/410:00 pm
KOA
-
STL
2 stops14h 26m
Delta
Deal found 1/24$435
This American Airlines deal was found by Cheapflights users on 1/24. 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 3/95:12 am
STL
-
KOA
1 stop14h 10m
American Airlines
Mon 3/169:40 pm
KOA
-
STL
1 stop11h 07m
American Airlines
Deal found 1/24$461
This Delta deal was found by Cheapflights users on 1/24. 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.
Sun 5/36:45 am
STL
-
KOA
2 stops17h 18m
Delta
Thu 5/79:45 pm
KOA
-
STL
2 stops15h 15m
Delta
Deal found 1/24$464
This Delta deal was found by Cheapflights users on 1/24. 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 4/237:02 am
STL
-
KOA
2 stops17h 01m
Delta
Mon 4/2710:00 pm
KOA
-
STL
2 stops14h 26m
Delta
Deal found 1/24$465
This United Airlines deal was found by Cheapflights users on 1/25. 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 2/48:45 am
STL
-
KOA
1 stop11h 56m
United Airlines
Wed 2/188:55 pm
KOA
-
STL
1 stop12h 19m
United Airlines
Deal found 1/25$468

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 January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$422
(United Airlines)

One-way from

$223
(Delta)

Popular in

July

Cheapest in

September

Average price

$520
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. 16% potential increase in price ($120 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 January 2026
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 January 26, 2026.
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

Wed 2/18

8:41 am-4:34 pm

1 stop11h 53m

Kona Intl

Wed 3/4

8:55 pm-1:19 pm

1 stop12h 24m

$422

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Mon 2/23

7:58 am-4:14 pm

1 stop12h 16m

Kona Intl

Tue 3/10

9:40 pm-1:47 pm

1 stop11h 07m

$422

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Wed 2/18

6:00 am-6:59 pm

2 stops16h 59m

Kona Intl

Wed 2/25

10:11 pm-5:13 pm

2 stops15h 02m

$433

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Tue 4/21

6:20 am-5:43 pm

2 stops16h 23m

Kona Intl

Mon 5/4

10:00 pm-5:26 pm

2 stops14h 26m

$434

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Thu 4/23

7:02 am-7:03 pm

2 stops17h 01m

Kona Intl

Tue 5/5

8:50 pm-4:50 pm

2 stops15h 00m

$434

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Thu 4/23

7:02 am-7:03 pm

2 stops17h 01m

Kona Intl

Wed 5/6

8:50 pm-6:00 pm

2 stops16h 10m

$434

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Wed 4/22

7:02 am-7:03 pm

2 stops17h 01m

Kona Intl

Mon 5/4

10:00 pm-5:26 pm

2 stops14h 26m

$434

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Mon 3/9

5:12 am-2:22 pm

1 stop14h 10m

Kona Intl

Mon 3/16

9:40 pm-1:47 pm

1 stop11h 07m

$461

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Thu 4/23

7:02 am-7:03 pm

2 stops17h 01m

Kona Intl

Mon 4/27

10:00 pm-5:26 pm

2 stops14h 26m

$465

St. LouisKailua-Kona

STL - KOA

STLKOA

Lambert-St Louis

Wed 2/4

8:45 am-4:41 pm

1 stop11h 56m

Kona Intl

Wed 2/18

8:55 pm-1:14 pm

1 stop12h 19m

$468

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 21 results
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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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 Expedia the most. Expedia 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 January 23, 2026.

To ensure you get the cheapest price possible for a flight from St. Louis to Kailua-Kona, you should look to book at least 72 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 $641). 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.

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 January 26, 2026.
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
11,795 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,795 reviews
Alaska Airlines
8.0
Very good
11,795 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Southwest
8.0
Very good
4,268 reviews
Alaska Airlines
8.0
Very good
11,795 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Delta
7.9
Good
8,119 reviews
Alaska Airlines
8.0
Very good
11,795 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
United Airlines
7.4
Good
9,205 reviews
Alaska Airlines
8.0
Very good
11,795 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
American Airlines
7.2
Good
11,197 reviews
Alaska Airlines
8.0
Very good
11,795 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

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 53m. United Airlines provides one of the quickest options available for as low as $422. 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 $422. Additional round-trip tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at $422 and $426, respectively. United Airlines is 32% 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 $641). 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 January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$422Average$642FlexibilityNo cancel feeOn-time69%
DeltaCheapest$422Average$564FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$426Average$657FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$444Average$753FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$481Average$653FlexibilityNo cancel feeOn-time63%

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