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Kaua'i

$211+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LIH
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
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 January 29, 2026.

This Delta deal was found by Cheapflights users on 1/28. 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.
Tue 5/56:20 am
STL
-
LIH
2 stops17h 20m
Delta
Sun 5/109:26 pm
LIH
-
STL
2 stops15h 34m
Delta
Deal found 1/28$478
This Delta deal was found by Cheapflights users on 1/27. 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 4/157:02 am
STL
-
LIH
2 stops16h 38m
Delta
Wed 4/228:20 pm
LIH
-
STL
2 stops12h 03m
Delta
Deal found 1/27$494
This Expedia deal was found by Cheapflights users on 1/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:00 am
STL
-
LIH
1 stop19h 29m
Multiple Airlines
Wed 4/229:00 pm
LIH
-
STL
2 stops21h 59m
Multiple Airlines
Deal found 1/27$497
This Orbitz deal was found by Cheapflights users on 1/28. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:20 pm
STL
-
LIH
1 stop21h 01m
Multiple Airlines
Fri 9/48:38 pm
LIH
-
STL
2 stops12h 48m
Multiple Airlines
Deal found 1/28$518
This American Airlines deal was found by Cheapflights users on 1/28. 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.
Sun 8/305:15 am
STL
-
LIH
2 stops13h 41m
American Airlines
Fri 9/41:45 pm
LIH
-
STL
2 stops14h 32m
American Airlines
Deal found 1/28$523
This Alaska Airlines deal was found by Cheapflights users on 1/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/272:47 pm
STL
-
LIH
1 stop35h 31m
Multiple Airlines
Fri 3/65:52 pm
LIH
-
STL
2 stops15h 59m
Multiple Airlines
Deal found 1/28$528
This United Airlines deal was found by Cheapflights users on 1/27. 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 4/158:54 am
STL
-
LIH
1 stop11h 53m
United Airlines
Wed 4/227:35 pm
LIH
-
STL
1 stop12h 33m
United Airlines
Deal found 1/27$547
This American Airlines deal was found by Cheapflights users on 1/27. 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 5/46:20 am
STL
-
LIH
1 stop11h 02m
American Airlines
Mon 5/112:12 pm
LIH
-
STL
2 stops16h 25m
American Airlines
Deal found 1/27$551
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Sun 11/157:00 am
STL
-
LIH
1 stop12h 54m
American Airlines
Sat 11/2110:44 pm
LIH
-
STL
1 stop10h 56m
American Airlines
Deal found 1/27$557
This Delta deal was found by Cheapflights users on 1/28. 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 stops17h 20m
Delta
Mon 5/119:45 pm
LIH
-
STL
2 stops17h 46m
Delta
Deal found 1/28$563

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$478
(Delta)

One-way from

$211
(Alaska Airlines)

Popular in

December

Cheapest in

November

Average price

$597
Provider with most accurate pricing for Lambert-St Louis-Lihue flight deals.
Search Deals
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 ($1 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($32 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 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 January 29, 2026.
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

Tue 5/5

6:20 am-6:40 pm

2 stops17h 20m

Lihue

Sun 5/10

9:26 pm-6:00 pm

2 stops15h 34m

$478

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Wed 4/15

7:02 am-6:40 pm

2 stops16h 38m

Lihue

Wed 4/22

8:20 pm-1:23 pm

2 stops12h 03m

$494

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Fri 2/27

2:47 pm-10:18 pm

1 stop35h 31m

Lihue

Fri 3/6

5:52 pm-1:51 pm

2 stops15h 59m

$528

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Fri 2/27

6:00 am-5:14 pm

2 stops15h 14m

Lihue

Fri 3/6

10:30 pm-3:28 pm

2 stops12h 58m

$528

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Wed 4/15

8:54 am-3:47 pm

1 stop11h 53m

Lihue

Wed 4/22

7:35 pm-1:08 pm

1 stop12h 33m

$547

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 5/5

7:00 am-9:26 pm

1 stop19h 26m

Lihue

Sun 5/10

10:26 pm-11:59 pm

1 stop20h 33m

$590

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Mon 5/4

4:46 pm-9:26 pm

1 stop33h 40m

Lihue

Mon 5/11

10:26 pm-11:59 pm

1 stop20h 33m

$593

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 6/2

6:20 pm-11:02 am

1 stop21h 42m

Lihue

Tue 6/9

10:26 pm-2:02 pm

1 stop10h 36m

$602

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Wed 5/27

7:56 pm-3:54 pm

2 stops24h 58m

Lihue

Wed 6/3

1:28 pm-3:50 pm

1 stop21h 22m

$608

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Wed 4/15

7:00 am-9:29 pm

1 stop19h 29m

$211

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 16 results
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 $328). Flying from St. Louis to Kaua'i in July is currently the most expensive (average of $703). 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 January 29, 2026.
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
11,807 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

Entertainment

7.0

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
11,807 reviews
Alaska Airlines
8.0
Very good
11,807 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

Entertainment

7.0

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
4,267 reviews
Alaska Airlines
8.0
Very good
11,807 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

Entertainment

7.0

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
8,128 reviews
Alaska Airlines
8.0
Very good
11,807 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

Entertainment

7.0

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
9,215 reviews
Alaska Airlines
8.0
Very good
11,807 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

Entertainment

7.0

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
11,205 reviews
Alaska Airlines
8.0
Very good
11,807 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

Entertainment

7.0

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 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 $547, Delta can have you in Kaua'i from St. Louis in 11h 53m. 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 $328). Flying from St. Louis to Kaua'i in July is currently the most expensive (average of $703). 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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Alternative routes for St. Louis to Kaua'i

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 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$308Average$467FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$416Average$748FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$440Average$794FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$451Average$583FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$477Average$803FlexibilityNo cancel feeOn-time63%

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