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Kaua'i

$246+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LIH
ene. 9 — ene. 161
vie. 1/9
vie. 1/16
1 adult, Economy
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Cheap 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 diciembre 10, 2025.

This United Airlines deal was found by Cheapflights users on 12/9. 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.
sáb. 12/139:00 amSTL - LIH
2 stops17h 21mUnited Airlines
sáb. 12/208:30 pmLIH - STL
2 stops13h 56mUnited Airlines
Deal found 12/9$654
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/136:30 amSTL - LIH
2 stops17h 40mDelta
sáb. 12/209:20 pmLIH - STL
2 stops20h 14mDelta
Deal found 12/10$713
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/236:30 amSTL - LIH
2 stops14h 34mUnited Airlines
sáb. 12/2710:15 pmLIH - STL
1 stop11h 05mUnited Airlines
Deal found 12/10$725
This Delta deal was found by Cheapflights users on 12/7. 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.
dom. 12/146:15 amSTL - LIH
2 stops17h 55mDelta
dom. 12/2110:43 pmLIH - STL
2 stops18h 51mDelta
Deal found 12/7$733
This American Airlines deal was found by Cheapflights users on 12/9. 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.
sáb. 12/137:38 amSTL - LIH
1 stop12h 10mAmerican Airlines
sáb. 12/2010:45 pmLIH - STL
1 stop11h 11mAmerican Airlines
Deal found 12/9$802
This United Airlines deal was found by Cheapflights users on 12/7. 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.
dom. 12/144:37 pmSTL - LIH
1 stop28h 21mUnited Airlines
dom. 12/218:30 pmLIH - STL
1 stop12h 50mUnited Airlines
Deal found 12/7$814

Find 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 diciembre 10, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$506
(American Airlines)

One-way from

$246
(American Airlines)

Popular in

December

Cheapest in

November

Average price

$1,107
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.
Search Deals
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. 0% potential increase in price ($3 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Kaua'i 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 diciembre 10, 2025.
Use the filters below to find and compare flights from St. Louis to Kaua'i that are best for you.

Fly from

St. Louis

Fly to

Kaua'i

Route

Depart

Return

Price

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

lun. 2/16

7:00 am-5:32 pm

2 stops14h 32m

Lihue

vie. 2/20

9:46 pm-2:45 pm

2 stops12h 59m

$512

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

dom. 1/4

6:00 am-6:39 pm

2 stops16h 39m

Lihue

vie. 1/16

11:00 pm-4:14 pm

2 stops13h 14m

$512

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

lun. 1/12

2:50 pm-10:41 pm

1 stop11h 51m

Lihue

jue. 1/15

7:49 pm-1:54 pm

2 stops14h 05m

$521

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

vie. 2/20

7:00 am-6:57 am

2 stops27h 57m

Lihue

vie. 3/6

3:45 pm-1:51 pm

2 stops18h 06m

$542

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

lun. 2/16

5:05 am-1:15 pm

1 stop12h 10m

Lihue

vie. 2/20

9:15 pm-11:55 am

1 stop10h 40m

$578

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

mié. 3/11

5:12 am-4:14 pm

2 stops16h 02m

$246

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

mié. 3/11

7:00 am-9:47 am

2 stops31h 47m

$264

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

mié. 3/11

7:15 am-6:50 pm

2 stops16h 35m

$277

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

vie. 2/20

6:47 am-4:31 pm

1 stop13h 44m

$291

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

mié. 3/11

7:00 am-9:18 pm

1 stop19h 18m

$292

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 14 results
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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 July is currently the most expensive (average of $687). 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?

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 diciembre 10, 2025.

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

Get insights into the airlines that provide service to Kaua'i. 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 Kaua'i. Reviews last updated diciembre 10, 2025.
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
11,423 reviews

Comfort

7.8

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,423 reviews
Alaska Airlines
8.0
Very good
11,423 reviews

Comfort

7.8

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Southwest
7.9
Good
4,253 reviews
Alaska Airlines
8.0
Very good
11,423 reviews

Comfort

7.8

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,007 reviews
Alaska Airlines
8.0
Very good
11,423 reviews

Comfort

7.8

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,092 reviews
Alaska Airlines
8.0
Very good
11,423 reviews

Comfort

7.8

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
American Airlines
7.2
Good
11,048 reviews
Alaska Airlines
8.0
Very good
11,423 reviews

Comfort

7.8

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

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?

    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 $521, American Airlines 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.

  • What are the cheapest airlines to fly from St. Louis to Kaua'i one-way?

    For one-way options, check prices for Southwest. According to our data, you can fly for as low as $201. Users have also found prices from $226 and $240 on Alaska Airlines and United Airlines, respectively.

  • 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 July is currently the most expensive (average of $687). 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 Kaua'i

Discover the top 5 airlines that operate flights from St. Louis to Kaua'i. 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 diciembre 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$308Average$628FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$416Average$724FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$446Average$822FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$451Average$583FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$477Average$797FlexibilityNo cancel feeOn-time63%

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