Kaua'i

$269+ 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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LIH
May 11 — May 181
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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 April 11, 2026.

This American Airlines deal was found by Cheapflights users on 4/8. 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.
Wed 12/27:00 am
STL
-
LIH
1 stop12h 48m
American Airlines
Wed 12/910:44 pm
LIH
-
STL
1 stop11h 07m
American Airlines
Deal found 4/8$464
This Delta deal was found by Cheapflights users on 4/8. 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 5/117:00 am
STL
-
LIH
2 stops17h 06m
Delta
Tue 5/199:55 pm
LIH
-
STL
2 stops18h 43m
Delta
Deal found 4/8$475
This Delta deal was found by Cheapflights users on 4/8. 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 5/107:00 am
STL
-
LIH
2 stops17h 06m
Delta
Tue 5/199:55 pm
LIH
-
STL
2 stops14h 51m
Delta
Deal found 4/8$500
This Delta deal was found by Cheapflights users on 4/8. 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 5/117:00 am
STL
-
LIH
2 stops17h 06m
Delta
Mon 5/189:55 pm
LIH
-
STL
2 stops16h 08m
Delta
Deal found 4/8$505
This American Airlines deal was found by Cheapflights users on 4/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:49 am
STL
-
LIH
1 stop11h 07m
American Airlines
Tue 8/189:41 pm
LIH
-
STL
2 stops15h 33m
American Airlines
Deal found 4/7$511
This Delta deal was found by Cheapflights users on 4/8. 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 5/46:20 am
STL
-
LIH
2 stops16h 20m
Delta
Mon 5/119:55 pm
LIH
-
STL
2 stops18h 43m
Delta
Deal found 4/8$523
This Delta deal was found by Cheapflights users on 4/8. 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 5/107:00 am
STL
-
LIH
2 stops17h 06m
Delta
Fri 5/158:40 pm
LIH
-
STL
2 stops13h 39m
Delta
Deal found 4/8$525
This Delta deal was found by Cheapflights users on 4/8. 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.
Wed 5/137:00 am
STL
-
LIH
2 stops17h 06m
Delta
Thu 5/149:55 pm
LIH
-
STL
2 stops18h 43m
Delta
Deal found 4/8$530
This Southwest deal was found by Cheapflights users on 4/6. 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.
Mon 4/276:20 am
STL
-
LIH
2 stops14h 50m
Southwest
Mon 5/48:10 pm
LIH
-
STL
1 stop12h 20m
Southwest
Deal found 4/6$533

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 April 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$475
(Delta)

One-way from

$269
(Alaska Airlines)

Popular in

December

Cheapest in

August

Average price

$648
Provider with most accurate pricing for Lambert-St Louis-Lihue flight deals.
Provider most trusted by Cheapflights users for Lambert-St Louis-Lihue flights.
From Lambert-St Louis to Kaua'i
One-way flight from Lambert-St Louis to Kaua'i
Highest demand for flights based on searches. 1% potential increase in price ($15 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($32 potential savings vs. average RT price).
Average for round-trip flights in April 2026

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 April 11, 2026.
Use the filters below to find and compare flights from St. Louis to Kaua'i that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Mon 5/4

6:20 am-5:40 pm

2 stops16h 20m

Lihue

Mon 5/11

9:55 pm-9:38 pm

2 stops18h 43m

$523

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Mon 4/27

8:25 am-4:10 pm

2 stops12h 45m

Lihue

Mon 5/4

8:10 pm-1:50 pm

2 stops12h 40m

$538

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Thu 4/23

8:20 am-6:05 pm

2 stops14h 45m

Lihue

Mon 4/27

8:10 pm-1:30 pm

1 stop12h 20m

$546

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Thu 4/23

7:00 am-6:40 pm

2 stops16h 40m

Lihue

Mon 4/27

8:20 pm-5:26 pm

2 stops16h 06m

$551

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 5/5

6:00 am-5:40 pm

2 stops16h 40m

Lihue

Sun 5/10

9:55 pm-7:03 pm

2 stops16h 08m

$569

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Wed 5/27

5:33 pm-11:02 am

1 stop22h 29m

Lihue

Wed 6/3

12:02 pm-4:37 pm

1 stop23h 35m

$578

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Wed 5/27

5:33 pm-2:09 pm

2 stops25h 36m

Lihue

Wed 6/3

12:02 pm-4:37 pm

1 stop23h 35m

$590

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Sat 4/25

7:00 am-4:10 pm

2 stops14h 10m

Lihue

Wed 4/29

7:10 pm-1:15 pm

2 stops13h 05m

$628
Quickest round-trip

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Mon 4/20

6:00 am-2:15 pm

2 stops13h 15m

Lihue

Fri 4/24

8:10 pm-11:45 am

1 stop10h 35m

$637
Cheapest one-way

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Wed 9/16

7:34 pm-12:09 pm

2 stops21h 35m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/8

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

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 $314). Flying from St. Louis to Kaua'i in July is currently the most expensive (average of $767). 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 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 April 11, 2026.
See what other customers who have flown with Southwest,Alaska Airlines, andUnited Airlines 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.

Crew

8.6

Comfort

8.0

Boarding

8.1

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Crew

8.6

Comfort

8.0

Boarding

8.1

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Crew

8.6

Comfort

8.0

Boarding

8.1

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Crew

8.6

Comfort

8.0

Boarding

8.1

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Crew

8.6

Comfort

8.0

Boarding

8.1

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 $538, Delta can have you in Kaua'i from St. Louis in 12h 45m. 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 $240 and $240 on United Airlines and American 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 $314). Flying from St. Louis to Kaua'i in July is currently the most expensive (average of $767). 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 4 airlines flying from St. Louis to Kaua'i

Discover the top 4 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 April 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$440Average$608FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$446Average$721FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$461Average$768FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$482Average$702FlexibilityNo cancel feeOn-time71%

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