What is the cheapest airline to fly from Kailua-Kona to St. Louis round-trip?

United Airlines, at $529, was found to be the cheapest airline from Kailua-Kona to St. Louis..

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

Currently, August is the cheapest month in which you can book a flight from Kailua-Kona to St. Louis (average of $311). Flying from Kailua-Kona to St. Louis in March is currently the most expensive (average of $356). 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 day to fly from Kailua-Kona to St. Louis?

Travelers seeking maximum savings on their Kailua-Kona to St. Louis flight should consider departing on Wednesday evenings when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Kailua-Kona to St. Louis as you normally would.

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

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

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

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

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

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

$218+ Flights from Kailua-Kona to St. Louis

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Find flight deals from Kailua-Kona to St. Louis

Cheapest flights from Kailua-Kona to St. Louis
Explore the most affordable flight options available from Kailua-Kona to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

Tue 9/238:44 pmKOA - STL

2 stops11h 49mDelta

Thu 10/26:00 amSTL - KOA

2 stops16h 35mDelta

Deal found 9/15

$613

Tue 9/2311:47 amKOA - STL

2 stops16h 39mAlaska Airlines

Thu 10/26:30 pmSTL - KOA

1 stop21h 46mAlaska Airlines

Deal found 9/15

$647

Tue 9/237:40 pmKOA - STL

1 stop12h 03mUnited Airlines

Thu 10/29:00 amSTL - KOA

1 stop11h 46mUnited Airlines

Deal found 9/16

$661

Last-minute flights from Kailua-Kona to St. Louis
Discover last-minute flight deals from Kailua-Kona to St. Louis. Data last updated September 17, 2025 and is based on user searches.

Tue 9/238:44 pmKOA - STL

2 stops11h 49mDelta

Thu 10/26:00 amSTL - KOA

2 stops16h 35mDelta

Deal found 9/15

$613

Tue 9/2311:47 amKOA - STL

2 stops16h 39mAlaska Airlines

Thu 10/26:30 pmSTL - KOA

1 stop21h 46mAlaska Airlines

Deal found 9/15

$647

Tue 9/237:40 pmKOA - STL

1 stop12h 03mUnited Airlines

Thu 10/29:00 amSTL - KOA

1 stop11h 46mUnited Airlines

Deal found 9/16

$661

One-way flights from Kailua-Kona to St. Louis
Search for one-way flight options from Kailua-Kona to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 17, 2025.

Tue 1/1310:00 pmKOA - STL

1 stop11h 52mAlaska Airlines

Deal found 9/15

$218

Wed 2/1110:00 pmKOA - STL

1 stop11h 52mAlaska Airlines

Deal found 9/15

$219

Thu 1/1510:00 pmKOA - STL

1 stop11h 52mAlaska Airlines

Deal found 9/15

$221

Tue 1/139:45 pmKOA - STL

2 stops14h 20mDelta

Deal found 9/15

$226

Mon 2/910:00 pmKOA - STL

1 stop11h 52mAlaska Airlines

Deal found 9/15

$239

Thu 10/308:30 pmKOA - STL

1 stop10h 15mSouthwest

Deal found 9/15

$240

Mon 1/1210:00 pmKOA - STL

1 stop11h 52mAlaska Airlines

Deal found 9/15

$241

Mon 1/128:45 pmKOA - STL

2 stops13h 29mDelta

Deal found 9/15

$246

Tue 12/29:35 pmKOA - STL

1 stop12h 16mAmerican Airlines

Deal found 9/15

$252

Sun 1/1110:00 pmKOA - STL

1 stop11h 52mAlaska Airlines

Deal found 9/15

$261

Fri 1/1610:00 pmKOA - STL

1 stop11h 52mAlaska Airlines

Deal found 9/17

$281

Cheapflights Fare Finder

Use the filters below to find and compare flights from Kailua-Kona to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Kailua-KonaSt. Louis

KOA - STL

KOASTL

Kona Intl

Fri 1/16

10:00 pm-1:52 pm

1 stop11h 52m

$221

Kailua-KonaSt. Louis

KOA - STL

KOASTL

Kona Intl

Thu 1/15

10:00 pm-1:52 pm

1 stop11h 52m

$221

Kailua-KonaSt. Louis

KOA - STL

KOASTL

Kona Intl

Tue 1/13

10:00 pm-1:52 pm

1 stop11h 52m

$221

Kailua-KonaSt. Louis

KOA - STL

KOASTL

Kona Intl

Tue 2/3

10:40 pm-4:14 pm

2 stops13h 34m

$226

Kailua-KonaSt. Louis

KOA - STL

KOASTL

Kona Intl

Fri 1/16

9:45 pm-2:20 pm

2 stops12h 35m

$226

Kailua-KonaSt. Louis

KOA - STL

KOASTL

Kona Intl

Wed 1/14

9:45 pm-4:05 pm

2 stops14h 20m

$226

Kailua-KonaSt. Louis

KOA - STL

KOASTL

Kona Intl

Thu 1/15

9:45 pm-4:05 pm

2 stops14h 20m

$226

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Kailua-Kona 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.

Reviews of airlines servicing St. Louis

Get a feel of what it's like to fly with United Airlines from Kailua-Kona to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,926 reviews

Reviews

1 / 20

10.0

Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.

United Airlines

7.4

Good

8,926 reviews

United Airlines

7.4

Good

8,926 reviews

Reviews

1 / 20

10.0

Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.

Related info for your journey

What is the cheapest airline to fly from Kailua-Kona to St. Louis round-trip?
United Airlines, at $529, was found to be the cheapest airline from Kailua-Kona to St. Louis..
Can I find deals for flights from Kailua-Kona to St. Louis that include hotel bookings?
Yes. In addition to deals on Kailua-Kona to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Kailua-Kona to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kailua-Kona to St. Louis.
Can I find deals for business class flights from Kailua-Kona to St. Louis?
Yes. Cheapflights offers flight deals from Kailua-Kona to St. Louis 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 Kailua-Kona to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Kailua-Kona to St. Louis (average of $311). Flying from Kailua-Kona to St. Louis in March is currently the most expensive (average of $356). 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

Edwardsville

O'Fallon

Fairview Heights

Maryland Heights

Collinsville

Eureka

Glencoe

St. Peters

Chesterfield

Alton

Farmington

Festus

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Kailua-Kona to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$529	Average$678	FlexibilityNo cancel fee	On-time69%

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$218+ Cheap flights from Kailua-Kona to St. Louis (KOA - STL)

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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Kailua-Kona to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Kailua-Kona to St. Louis

Cheapest flights from Kailua-Kona to St. LouisExplore the most affordable flight options available from Kailua-Kona to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

Explore the most affordable flight options available from Kailua-Kona to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Kailua-Kona to St. Louis that are best for you.

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

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Kailua-Kona with our price prediction graph.

Reviews of airlines servicing St. Louis

Get a feel of what it's like to fly with United Airlines from Kailua-Kona to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What is the cheapest airline to fly from Kailua-Kona to St. Louis round-trip?

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

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

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

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

Traveling to a place near St. Louis?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Kailua-Kona to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Kailua-Kona to St. Louis

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Kailua-Kona to St. Louis
Explore the most affordable flight options available from Kailua-Kona to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.