How long is the flight from St. Louis to Kaua'i?

For as low as $445, Delta can have you in Kaua'i from St. Louis in 11h 51m. St. Louis and Kaua'i are separated by a distance of 4171 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Kaua'i ranges from 2.2 - 6.7 inches per month. January is typically the wettest month, when rainfall can reach 6.7 in. June is typically the driest time to visit Kaua'i when rainfall is around 2.2 in.

If weather is an important factor for your trip to Kaua'i, 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 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 69.8 F).

What are the most popular airlines that fly from St. Louis to Kaua'i?

The most popular airlines flying from St. Louis to Kaua'i are American Airlines, Alaska Airlines and Southwest. Something to consider prior to booking your flight.

What airport do you fly from for flights from St. Louis to Kaua'i?

Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly out of when you book flights from St. Louis to Kaua'i.

Can I find deals for flights from St. Louis to Kaua'i that include hotel bookings?

Yes. In addition to deals on St. Louis to Kaua'i flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from St. Louis to Kaua'i?

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

Can I find deals for business class flights from St. Louis to Kaua'i?

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

$182+ Flights from St. Louis to Kaua'i

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Find flight deals from St. Louis to Kaua'i

Cheapest flights from St. Louis to Kaua'i
Explore the most affordable flight options available from St. Louis to Kaua'i. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 26, 2025.

Tue 12/309:36 amSTL - LIH

2 stops13h 03mAmerican Airlines

Thu 1/2210:10 pmLIH - STL

1 stop11h 43mAmerican Airlines

Deal found 11/25

$602

Tue 12/99:00 amSTL - LIH

1 stop11h 58mUnited Airlines

Sat 12/138:30 pmLIH - STL

1 stop12h 09mUnited Airlines

Deal found 11/23

$611

Sun 12/149:00 amSTL - LIH

1 stop11h 58mUnited Airlines

Sun 12/218:30 pmLIH - STL

1 stop12h 50mUnited Airlines

Deal found 11/23

$621

Sat 11/299:00 amSTL - LIH

1 stop11h 58mUnited Airlines

Mon 12/18:30 pmLIH - STL

2 stops15h 34mUnited Airlines

Deal found 11/25

$665

Sun 12/147:38 amSTL - LIH

1 stop12h 10mAmerican Airlines

Sun 12/213:55 pmLIH - STL

2 stops14h 55mAmerican Airlines

Deal found 11/23

$667

Sun 12/146:15 amSTL - LIH

2 stops17h 55mDelta

Sun 12/2110:43 pmLIH - STL

2 stops18h 51mDelta

Deal found 11/23

$683

Best flights from St. Louis to Kaua'i
Discover carefully curated flight deals from St. Louis to Kaua'i that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 26, 2025.

Tue 1/276:35 amSTL - LIH

2 stops17h 20mDelta

Wed 2/259:45 pmLIH - STL

2 stops15h 57mDelta

Deal found 11/25

$415

Tue 1/277:04 amSTL - LIH

1 stop13h 33mAmerican Airlines

Wed 2/2510:30 pmLIH - STL

1 stop11h 16mAmerican Airlines

Deal found 11/25

$445

Mon 2/22:50 pmSTL - LIH

1 stop11h 51mHawaiian Airlines

Tue 2/310:20 pmLIH - STL

1 stop11h 34mHawaiian Airlines

Deal found 11/24

$445

Mon 2/22:50 pmSTL - LIH

1 stop11h 51mAlaska Airlines

Tue 2/37:49 pmLIH - STL

2 stops14h 05mAlaska Airlines

Deal found 11/25

$450

Tue 1/276:00 amSTL - LIH

1 stop11h 15mSouthwest

Wed 2/259:15 pmLIH - STL

2 stops13h 00mSouthwest

Deal found 11/25

$450

Mon 2/26:00 amSTL - LIH

2 stops17h 54mDelta

Tue 2/39:20 pmLIH - STL

2 stops14h 47mDelta

Deal found 11/23

$453

Wed 1/147:04 amSTL - LIH

1 stop13h 33mAmerican Airlines

Sun 1/1811:00 pmLIH - STL

1 stop20h 59mAmerican Airlines

Deal found 11/24

$488

Wed 3/47:00 amSTL - LIH

2 stops14h 32mAmerican Airlines

Wed 3/119:30 pmLIH - STL

2 stops14h 43mAmerican Airlines

Deal found 11/23

$488

Sun 1/46:00 amSTL - LIH

2 stops16h 39mAmerican Airlines

Fri 1/1611:00 pmLIH - STL

1 stop20h 59mAmerican Airlines

Deal found 11/23

$493

Last-minute flights from St. Louis to Kaua'i
Discover last-minute flight deals from St. Louis to Kaua'i. Data last updated November 26, 2025 and is based on user searches.

Sat 11/299:00 amSTL - LIH

1 stop11h 58mUnited Airlines

Mon 12/18:30 pmLIH - STL

2 stops15h 34mUnited Airlines

Deal found 11/25

$665

Tue 12/99:00 amSTL - LIH

1 stop11h 58mUnited Airlines

Sat 12/138:30 pmLIH - STL

1 stop12h 09mUnited Airlines

Deal found 11/23

$611

Sun 12/149:00 amSTL - LIH

1 stop11h 58mUnited Airlines

Sun 12/218:30 pmLIH - STL

1 stop12h 50mUnited Airlines

Deal found 11/23

$621

Sun 12/147:38 amSTL - LIH

1 stop12h 10mAmerican Airlines

Sun 12/213:55 pmLIH - STL

2 stops14h 55mAmerican Airlines

Deal found 11/23

$667

Sun 12/146:15 amSTL - LIH

2 stops17h 55mDelta

Sun 12/2110:43 pmLIH - STL

2 stops18h 51mDelta

Deal found 11/23

$683

Tue 12/309:36 amSTL - LIH

2 stops13h 03mAmerican Airlines

Thu 1/2210:10 pmLIH - STL

1 stop11h 43mAmerican Airlines

Deal found 11/25

$602

One-way flights from St. Louis to Kaua'i
Search for one-way flight options from St. Louis to Kaua'i. Find affordable one-way fares based on user searches. Data last updated November 26, 2025.

Wed 1/213:46 pmSTL - LIH

3 stops27h 26mMultiple Airlines

Deal found 11/26

$182

Wed 1/147:04 amSTL - LIH

1 stop13h 33mAmerican Airlines

Deal found 11/23

$190

Sun 2/86:40 amSTL - LIH

2 stops16h 06mDelta

Deal found 11/26

$207

Sun 2/89:32 pmSTL - LIH

3 stops45h 40mMultiple Airlines

Deal found 11/26

$219

Wed 1/217:04 amSTL - LIH

1 stop13h 33mAmerican Airlines

Deal found 11/26

$223

Wed 1/143:43 pmSTL - LIH

3 stops29h 11mMultiple Airlines

Deal found 11/23

$226

Thu 1/82:50 pmSTL - LIH

1 stop11h 51mAlaska Airlines

Deal found 11/24

$240

Sun 1/1810:09 pmSTL - LIH

3 stops43h 00mMultiple Airlines

Deal found 11/26

$241

Thu 1/86:00 amSTL - LIH

2 stops14h 37mAmerican Airlines

Deal found 11/24

$246

Wed 3/116:00 amSTL - LIH

2 stops17h 50mDelta

Deal found 11/25

$277

Cheap flight deals from St. Louis to Kaua'i

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$415 (Delta)
One-way from	$182 (Kiwi.com)
Popular in	May
Cheapest in	November
Average price	$552

Provider with most accurate pricing for Lambert-St Louis-Lihue flight deals.

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Provider most trusted by Cheapflights users for Lambert-St Louis-Lihue flights.

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From Lambert-St Louis to Kaua'i

Search Deals

One-way flight from Lambert-St Louis to Kaua'i

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($94 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in November 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 1/27

6:35 am-7:55 pm

2 stops17h 20m

Lihue

Wed 2/25

9:45 pm-5:42 pm

2 stops15h 57m

$415

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 1/27

7:04 am-4:37 pm

1 stop13h 33m

Lihue

Wed 2/25

10:30 pm-1:46 pm

1 stop11h 16m

$445

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Mon 2/2

2:50 pm-10:41 pm

1 stop11h 51m

Lihue

Tue 2/3

10:20 pm-1:54 pm

1 stop11h 34m

$445

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Mon 2/2

2:50 pm-10:41 pm

1 stop11h 51m

Lihue

Tue 2/3

7:49 pm-1:54 pm

2 stops14h 05m

$450

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 1/27

6:00 am-1:15 pm

1 stop11h 15m

Lihue

Wed 2/25

9:15 pm-2:15 pm

2 stops13h 00m

$450

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Mon 2/2

6:00 am-7:54 pm

2 stops17h 54m

Lihue

Tue 2/3

9:20 pm-4:07 pm

2 stops14h 47m

$453

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Wed 1/14

7:04 am-4:37 pm

1 stop13h 33m

Lihue

Sun 1/18

11:00 pm-11:59 pm

1 stop20h 59m

$488

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Wed 3/4

7:00 am-5:32 pm

2 stops14h 32m

Lihue

Wed 3/11

9:30 pm-5:13 pm

2 stops14h 43m

$488

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Sun 1/4

6:00 am-6:39 pm

2 stops16h 39m

Lihue

Fri 1/16

11:00 pm-11:59 pm

1 stop20h 59m

$493

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Wed 1/21

3:46 pm-3:12 pm

3 stops27h 26m

$182

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/26

Showing 1-10 of 20 results

Best time to book a flight from St. Louis to Kaua'i

Have a flexible travel schedule? Discover the best time to fly to Kaua'i 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 Kaua'i

What is the cheapest month to book a flight from St. Louis to Kaua'i?

Currently, August is the cheapest month in which you can book a flight from St. Louis to Kaua'i (average of $321). Flying from St. Louis to Kaua'i in May is currently the most expensive (average of $644). 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 FUS?

A simple way to save on the total cost of your ticket is to fly from St. Louis to Kaua'i in the evening. If you’re flexible enough to do this you can expect to save up to 53% on your trip compared to booking a flight in the afternoon.

Reviews of airlines servicing Kaua'i

See what other customers who have flown with Alaska Airlines, Southwest, and Delta from St. Louis to Kaua'i have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

11,363 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.

Alaska Airlines

8.0

Very good

11,363 reviews

Alaska Airlines

8.0

Very good

11,363 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.

Southwest

8.0

Very good

4,254 reviews

Alaska Airlines

8.0

Very good

11,363 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.

Delta

7.9

Good

8,003 reviews

Alaska Airlines

8.0

Very good

11,363 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.

United Airlines

7.4

Good

9,050 reviews

Alaska Airlines

8.0

Very good

11,363 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.

American Airlines

7.2

Good

11,037 reviews

Alaska Airlines

8.0

Very good

11,363 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.

Related info for your journey

What airport do you fly from for flights from St. Louis to Kaua'i?
Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly out of when you book flights from St. Louis to Kaua'i.
How long is the flight from St. Louis to Kaua'i?
For as low as $445, Delta can have you in Kaua'i from St. Louis in 11h 51m. St. Louis and Kaua'i are separated by a distance of 4171 mi. This flight may include one or multiple stops.
Can I find deals for flights from St. Louis to Kaua'i that include hotel bookings?
Yes. In addition to deals on St. Louis to Kaua'i flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Kaua'i?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Kaua'i.
Can I find deals for business class flights from St. Louis to Kaua'i?
Yes. Cheapflights offers flight deals from St. Louis to Kaua'i 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 Kaua'i?
Currently, August is the cheapest month in which you can book a flight from St. Louis to Kaua'i (average of $321). Flying from St. Louis to Kaua'i in May is currently the most expensive (average of $644). 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

Alternative routes for St. Louis to Kaua'i

Top 5 airlines flying from St. Louis to Kaua'i

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$308	Average$628	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$411	Average$724	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$446	Average$822	FlexibilityNo cancel fee	On-time69%
Alaska Airlines	Cheapest$451	Average$583	FlexibilityNo cancel fee	On-time75%
Southwest	Cheapest$477	Average$805	FlexibilityNo cancel fee	On-time63%

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$182+ Cheap flights from St. Louis (STL) to Kaua'i

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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Kaua'i with Cheapflights

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Find flight deals from St. Louis to Kaua'i

Cheapest flights from St. Louis to Kaua'iExplore the most affordable flight options available from St. Louis to Kaua'i. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 26, 2025.

Explore the most affordable flight options available from St. Louis to Kaua'i. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 26, 2025.

Cheap flight deals from St. Louis to Kaua'i

Keep the following information in mind while searching for St. Louis to Kaua'i flight deals. Data was last updated November 26, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Kaua'i that are best for you.

Best time to book a flight from St. Louis to Kaua'i

Have a flexible travel schedule? Discover the best time to fly to Kaua'i from St. Louis with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Kaua'i

What is the cheapest month to book a flight from St. Louis to Kaua'i?

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

Find hourly flight availability from St. Louis to Kaua'i. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 26, 2025.

Reviews of airlines servicing Kaua'i

See what other customers who have flown with Alaska Airlines, Southwest, and Delta from St. Louis to Kaua'i have to say. 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 St. Louis to Kaua'i. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from St. Louis to Kaua'i?

How long is the flight from St. Louis to Kaua'i?

Can I find deals for flights from St. Louis to Kaua'i that include hotel bookings?

How can I find direct flights from St. Louis to Kaua'i?

Can I find deals for business class flights from St. Louis to Kaua'i?

What is the cheapest month to book a flight from St. Louis to Kaua'i?

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 St. Louis to Kaua'i

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

Top 5 airlines flying from St. Louis to Kaua'i

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Cheapest flights from St. Louis to Kaua'i
Explore the most affordable flight options available from St. Louis to Kaua'i. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 26, 2025.