HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Kaua'i

$226+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LIH
Jan 27 — Feb 31
Mon 1/27
Mon 2/3
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from St. Louis to Kaua'i

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Kaua'i (zzFUS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 22, 2025.

Round-trip from

$414
(American Airlines)

One-way from

$266
(American Airlines)
From Lambert-St Louis to Kaua'i
Search Deals
One-way flight from Lambert-St Louis to Kaua'i
Search Deals

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 January 22, 2025.

This American Airlines deal was found by Cheapflights users on 1/21. 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 2/245:45 amSTL - LIH
2 stops15h 17mAmerican Airlines
Tue 3/411:15 pmLIH - STL
2 stops16h 14mAmerican Airlines
Deal found 1/21$414
This United Airlines deal was found by Cheapflights users on 1/21. 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.
Mon 2/248:20 amSTL - LIH
1 stop12h 44mUnited Airlines
Tue 3/48:40 pmLIH - STL
1 stop12h 03mUnited Airlines
Deal found 1/21$462
This Delta deal was found by Cheapflights users on 1/21. 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 2/256:00 amSTL - LIH
2 stops18h 09mDelta
Wed 3/510:51 pmLIH - STL
2 stops15h 09mDelta
Deal found 1/21$483
This Alaska Airlines deal was found by Cheapflights users on 1/21. 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.
Wed 2/52:49 pmSTL - LIH
2 stops22h 58mAlaska Airlines
Tue 2/1111:28 pmLIH - STL
1 stop20h 31mAlaska Airlines
Deal found 1/21$486
This Southwest deal was found by Cheapflights users on 1/21. 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.
Sat 5/245:50 amSTL - LIH
2 stops15h 10mSouthwest
Sat 5/313:45 pmLIH - STL
2 stops15h 45mSouthwest
Deal found 1/21$1,299

Find flights from St. Louis to Kaua'i within your budget

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 22, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Mon 2/24

5:45 am-5:02 pm

2 stops15h 17m

Lihue

Tue 3/4

11:15 pm-7:29 pm

2 stops16h 14m

$414

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Mon 2/24

8:20 am-5:04 pm

1 stop12h 44m

Lihue

Tue 3/4

8:40 pm-12:43 pm

1 stop12h 03m

$462

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 2/25

7:40 am-8:09 pm

2 stops16h 29m

Lihue

Mon 3/3

10:51 pm-4:53 pm

2 stops14h 02m

$483

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Wed 2/5

2:49 pm-9:47 am

2 stops22h 58m

Lihue

Tue 2/11

11:28 pm-11:59 pm

1 stop20h 31m

$486

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Sat 3/29

8:50 am-7:55 pm

2 stops16h 05m

Lihue

Sat 4/5

8:15 am-12:30 am

2 stops11h 15m

$919

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Mon 4/21

6:00 am-5:18 pm

2 stops16h 18m

$226

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Sun 4/20

6:15 am-12:37 pm

1 stop11h 22m

$262

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Wed 5/28

9:10 am-7:55 pm

2 stops15h 45m

$297

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Sat 2/1

6:03 am-10:28 pm

2 stops44h 25m

$320

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/22

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.

Travel insights for flights from St. Louis to Kaua'i

Get recent, data-driven insights about flights from St. Louis to Kaua'i including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from St. Louis to Kaua'i (average of $440). Flying from St. Louis to Kaua'i in June 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 January 22, 2025.

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

Rainfall in Kaua'i by month

Plan your trip to Kaua'i by taking into account the average rainfall totals by month.

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.

Temperature in Kaua'i by month

Plan your trip to Kaua'i by taking into account the average temperature totals by month.

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).

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 22, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, American Airlines and Delta from St. Louis to Kaua'i to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,707 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines
8.0
Very good
9,707 reviews
Alaska Airlines
8.0
Very good
9,707 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta
8.0
Very good
8,512 reviews
Alaska Airlines
8.0
Very good
9,707 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines
7.4
Good
8,975 reviews
Alaska Airlines
8.0
Very good
9,707 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,707 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.

  • 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, January is the cheapest month in which you can book a flight from St. Louis to Kaua'i (average of $440). Flying from St. Louis to Kaua'i in June 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

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.
St. Louis to Honolulu flights
Kansas City to Honolulu flights
Kansas City to Kahului flights
St. Louis to Kahului flights
St. Louis to Kailua-Kona flights
Kansas City to Lihue flights
Kansas City to Kailua-Kona flights
St. Louis to Lihue flights
Springfield to Honolulu flights
Springfield to Lihue flights
St. Louis to Hilo flights
Columbia to Honolulu flights
Springfield to Kahului flights
Springfield to Kailua-Kona flights
St. Louis to Kapalua flights
Kansas City to Hilo flights
St. Louis to Hana flights
Kansas City to Hana flights
Kansas City to Kapalua flights
Joplin to Kailua-Kona flights
Joplin to Honolulu flights
Springfield to Hilo flights
Columbia to Lihue flights
Kansas City to Waimea (Kamuela) flights
St. Louis to Waimea (Kamuela) flights

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 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$389Average$697FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$454Average$815FlexibilityNo cancel feeOn-time69%
DeltaCheapest$463Average$789FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$479Average$786FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$490Average$691FlexibilityNo cancel feeOn-time63%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.