What airlines fly to Kaua'i?

United Airlines, American Airlines and Southwest are the top three most popular airlines that fly to Kaua'i from St. Louis according to our data. United Airlines is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Kaua'i. Keep in mind that there are 5 different airlines that fly to Kaua'i on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Lambert-St Louis to Kaua'i?

Southwest and United Airlines are the most popular carriers operating from Lambert-St Louis to Kaua'i

When did momondo last update prices for flights from Lambert-St Louis Airport to Kaua'i?

Prices for flights from Lambert-St Louis Airport to Kaua'i are updated daily.

How many operators does momondo search for flights from Lambert-St Louis Airport to Kaua'i?

As of August 2026, there are 5 operators available to choose from for flights from Lambert-St Louis Airport to Kaua'i.

How old do you have to be to fly from Lambert-St Louis Airport to Kaua'i?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Kaua'i.

What documentation or ID do you need to fly to Kaua'i?

The travel and health documents required for your trip to Kaua'i can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Kaua'i. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$524 Cheap Flights from St. Louis to Kaua'i in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Kaua'i

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:29 am - 2:42 pmSTL Lambert-St Louis-LIH Lihue

13h 13m1 stop Seattle/Tacoma Intl

12:47 pm - 2:21 pmLIH Lihue-STL Lambert-St Louis

20h 34m1 stop Seattle/Tacoma Intl

$524Alaska Airlines

Mon, Sep 28 - Thu, Oct 1

3:24 pm - 10:56 pmSTL Lambert-St Louis-LIH Lihue

11h 32m1 stop Seattle/Tacoma Intl

11:31 pm - 2:26 pmLIH Lihue-STL Lambert-St Louis

10h 55m1 stop Seattle/Tacoma Intl

$524Alaska Airlines

Thu, Jan 21 - Mon, Jan 25

9:13 am - 5:08 pmSTL Lambert-St Louis-LIH Lihue

11h 55m1 stop Denver Intl

8:30 pm - 12:43 pmLIH Lihue-STL Lambert-St Louis

12h 13m1 stop Denver Intl

$524United Airlines

Thu, Feb 4 - Tue, Feb 9

8:00 am - 3:02 pmSTL Lambert-St Louis-LIH Lihue

12h 02m1 stop Phoenix Sky Harbor Intl

9:10 pm - 1:44 pmLIH Lihue-STL Lambert-St Louis

11h 34m1 stop Phoenix Sky Harbor Intl

$524American Airlines

Tue, Sep 15 - Tue, Sep 22

8:00 am - 3:02 pmSTL Lambert-St Louis-LIH Lihue

12h 02m1 stop Phoenix Sky Harbor Intl

9:10 pm - 1:44 pmLIH Lihue-STL Lambert-St Louis

11h 34m1 stop Phoenix Sky Harbor Intl

$524American Airlines

Tue, Sep 15 - Tue, Sep 22

6:25 am - 1:15 pmSTL Lambert-St Louis-LIH Lihue

10h 50m1 stop Las Vegas Harry Reid Intl

9:05 pm - 2:40 pmLIH Lihue-STL Lambert-St Louis

13h 35m1 stop Las Vegas Harry Reid Intl

$524Southwest

Tue, Dec 8 - Tue, Dec 15

6:08 pm - 11:20 amSTL Lambert-St Louis-LIH Lihue

22h 12m1 stop Portland

12:47 pm - 2:21 pmLIH Lihue-STL Lambert-St Louis

20h 34m1 stop Seattle/Tacoma Intl

$524Multiple Airlines

Mon, Sep 28 - Thu, Oct 1

6:08 pm - 11:20 amSTL Lambert-St Louis-LIH Lihue

22h 12m1 stop Portland

9:35 pm - 2:11 pmLIH Lihue-STL Lambert-St Louis

11h 36m1 stop Seattle/Tacoma Intl

$524Multiple Airlines

Tue, Sep 22 - Wed, Sep 30

8:50 am - 4:55 pmSTL Lambert-St Louis-LIH Lihue

12h 05m1 stop Denver Intl

2:03 pm - 8:48 amLIH Lihue-STL Lambert-St Louis

14h 45m2 stops Los Angeles Los Angeles Chicago O'Hare Intl

$530United Airlines

Sat, Nov 7 - Sat, Nov 14

5:05 am - 1:15 pmSTL Lambert-St Louis-LIH Lihue

12h 10m1 stop Las Vegas Harry Reid Intl

7:10 pm - 11:50 amLIH Lihue-STL Lambert-St Louis

12h 40m2 stops Honolulu Los Angeles Los Angeles

$530Southwest

Tue, Dec 8 - Tue, Dec 15

Cheap last minute flights

Enter your travel dates to find the best prices.

8:00 am - 2:55 pmSTL Lambert-St Louis-LIH Lihue

11h 55m1 stop Phoenix Sky Harbor Intl

9:00 pm - 6:05 pmLIH Lihue-STL Lambert-St Louis

16h 05m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth

$626American Airlines

Tue, Aug 11 - Tue, Aug 18

7:00 am - 7:16 pmSTL Lambert-St Louis-LIH Lihue

17h 16m2 stops Atlanta Hartsfield-Jackson Seattle/Tacoma Intl

9:55 pm - 11:21 pmLIH Lihue-STL Lambert-St Louis

20h 26m2 stops Seattle/Tacoma Intl Atlanta Hartsfield-Jackson

$631Delta

Tue, Aug 11 - Tue, Aug 18

7:00 am - 7:16 pmSTL Lambert-St Louis-LIH Lihue

17h 16m2 stops Atlanta Hartsfield-Jackson Seattle/Tacoma Intl

9:55 pm - 6:55 pmLIH Lihue-STL Lambert-St Louis

16h 00m2 stops Seattle/Tacoma Intl Salt Lake City

$631Delta

Fri, Aug 14 - Sat, Aug 15

8:00 am - 2:55 pmSTL Lambert-St Louis-LIH Lihue

11h 55m1 stop Phoenix Sky Harbor Intl

9:00 pm - 5:37 pmLIH Lihue-STL Lambert-St Louis

15h 37m1 stop Phoenix Sky Harbor Intl

$678American Airlines

Tue, Aug 11 - Tue, Aug 18

8:00 am - 2:55 pmSTL Lambert-St Louis-LIH Lihue

11h 55m1 stop Phoenix Sky Harbor Intl

9:00 pm - 8:36 pmLIH Lihue-STL Lambert-St Louis

18h 36m1 stop Phoenix Sky Harbor Intl

$678American Airlines

Fri, Aug 14 - Sat, Aug 22

6:02 am - 3:13 pmSTL Lambert-St Louis-LIH Lihue

14h 11m2 stops Seattle/Tacoma Intl Kahului

2:30 pm - 5:10 pmLIH Lihue-STL Lambert-St Louis

21h 40m2 stops Kahului Portland

$731Multiple Airlines

Fri, Aug 14 - Sat, Aug 22

6:02 am - 4:30 pmSTL Lambert-St Louis-LIH Lihue

15h 28m2 stops Seattle/Tacoma Intl Kahului

2:30 pm - 5:10 pmLIH Lihue-STL Lambert-St Louis

21h 40m2 stops Kahului Portland

$731Multiple Airlines

Fri, Aug 14 - Sat, Aug 22

8:00 am - 5:41 pmSTL Lambert-St Louis-LIH Lihue

14h 41m2 stops Salt Lake City Los Angeles Los Angeles

9:55 pm - 6:55 pmLIH Lihue-STL Lambert-St Louis

16h 00m2 stops Seattle/Tacoma Intl Salt Lake City

$734Delta

Fri, Aug 14 - Sat, Aug 15

5:37 pm - 11:08 amSTL Lambert-St Louis-LIH Lihue

22h 31m1 stop Portland

2:30 pm - 5:10 pmLIH Lihue-STL Lambert-St Louis

21h 40m2 stops Kahului Portland

$789Multiple Airlines

Fri, Aug 14 - Sat, Aug 22

9:30 am - 7:44 pmSTL Lambert-St Louis-LIH Lihue

15h 14m2 stops Chicago O'Hare Intl San Francisco

10:48 pm - 4:34 pmLIH Lihue-STL Lambert-St Louis

12h 46m2 stops San Francisco Denver Intl

$845United Airlines

Fri, Aug 14 - Sat, Aug 22

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Alaska Airlines flights from St. Louis to Kaua'i

Our best Alaska Airlines deals on St. Louis to Kaua'i flight tickets

Alaska Airlines

Sep 21

STL6:29 amLambert-St Louis

13h 13m

1 stop

LIH2:42 pmLihue

Sep 28

LIH9:35 pmLihue

11h 46m

1 stop

STL2:21 pmLambert-St Louis

$549

Alaska Airlines

Sep 28

STL7:36 pmLambert-St Louis

24h 06m

1 stop

LIH2:42 pmLihue

Oct 2

LIH9:35 pmLihue

13h 09m

1 stop

STL3:44 pmLambert-St Louis

$550

Alaska Airlines

Sep 21

STL6:29 amLambert-St Louis

13h 13m

1 stop

LIH2:42 pmLihue

Sep 29

LIH9:35 pmLihue

11h 46m

1 stop

STL2:21 pmLambert-St Louis

$574

Delta flights from St. Louis to Kaua'i

Our best Delta deals on St. Louis to Kaua'i flight tickets

Delta

Jan 29

STL6:30 amLambert-St Louis

17h 52m

2 stops

LIH8:22 pmLihue

Feb 5

LIH10:45 pmLihue

18h 56m

2 stops

STL9:41 pmLambert-St Louis

$555

Delta

Oct 30

STL7:45 amLambert-St Louis

16h 29m

2 stops

LIH7:14 pmLihue

Nov 7

LIH9:47 pmLihue

12h 58m

2 stops

STL2:45 pmLambert-St Louis

$585

Delta

Oct 30

STL6:21 amLambert-St Louis

16h 15m

2 stops

LIH5:36 pmLihue

Nov 7

LIH9:47 pmLihue

15h 57m

2 stops

STL5:44 pmLambert-St Louis

$615

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisLihue

STL Lambert-St Louis - LIH Lihue

STLLIH

Lambert-St Louis

Mon 9/28

6:29 am-2:42 pm

1 stop13h 13m

Lihue

Thu 10/1

12:47 pm-2:21 pm

1 stop20h 34m

$524

Quickest round-trip

St. LouisLihue

STL Lambert-St Louis - LIH Lihue

STLLIH

Lambert-St Louis

Thu 1/21

3:24 pm-10:56 pm

1 stop11h 32m

Lihue

Mon 1/25

11:31 pm-2:26 pm

1 stop10h 55m

$524

St. LouisLihue

STL Lambert-St Louis - LIH Lihue

STLLIH

Lambert-St Louis

Thu 2/4

9:13 am-5:08 pm

1 stop11h 55m

Lihue

Tue 2/9

8:30 pm-12:43 pm

1 stop12h 13m

$524

St. LouisLihue

STL Lambert-St Louis - LIH Lihue

STLLIH

Lambert-St Louis

Tue 9/15

8:00 am-3:02 pm

1 stop12h 02m

Lihue

Tue 9/22

9:10 pm-1:44 pm

1 stop11h 34m

$524

St. LouisLihue

STL Lambert-St Louis - LIH Lihue

STLLIH

Lambert-St Louis

Tue 9/15

8:00 am-3:02 pm

1 stop12h 02m

Lihue

Tue 9/22

9:10 pm-1:44 pm

1 stop11h 34m

$524

St. LouisLihue

STL Lambert-St Louis - LIH Lihue

STLLIH

Lambert-St Louis

Tue 12/8

6:25 am-1:15 pm

1 stop10h 50m

Lihue

Tue 12/15

9:05 pm-2:40 pm

1 stop13h 35m

$524

St. LouisLihue

STL Lambert-St Louis - LIH Lihue

STLLIH

Lambert-St Louis

Mon 9/28

6:08 pm-11:20 am

1 stop22h 12m

Lihue

Thu 10/1

12:47 pm-2:21 pm

1 stop20h 34m

$524

St. LouisLihue

STL Lambert-St Louis - LIH Lihue

STLLIH

Lambert-St Louis

Tue 9/22

6:08 pm-11:20 am

1 stop22h 12m

Lihue

Wed 9/30

9:35 pm-2:11 pm

1 stop11h 36m

$524

St. LouisLihue

STL Lambert-St Louis - LIH Lihue

STLLIH

Lambert-St Louis

Sat 11/7

8:50 am-4:55 pm

1 stop12h 05m

Lihue

Sat 11/14

2:03 pm-8:48 am

2 stops14h 45m

$530

St. LouisLihue

STL Lambert-St Louis - LIH Lihue

STLLIH

Lambert-St Louis

Tue 12/8

5:05 am-1:15 pm

1 stop12h 10m

Lihue

Tue 12/15

7:10 pm-11:50 am

2 stops12h 40m

$530

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Kaua'i

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Kaua'i?

In general, April is the cheapest month to fly from St. Louis to Kaua'i. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $561. The month of January is another great option to travel to Kaua'i, with average flight prices from St. Louis averaging around $597.

Can stopping save me money on St. Louis to Kaua'i flights?

No. A direct flight is the cheapest option for a flight between St. Louis to Kaua'i.

Cheap St. Louis to Kaua'i flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Kaua'i

Fastest flight time	11h 46m
Direct flights	None

The fastest flight from St. Louis to Kaua'i takes 11h 46m

There are no direct flights from St. Louis to Kaua'i. There are no popular flight routes from St. Louis to Kaua'i.

Search flight deals

Frequently asked questions about flying from St. Louis to Kaua'i

When did momondo last update prices for flights from Lambert-St Louis Airport to Kaua'i?
Prices for flights from Lambert-St Louis Airport to Kaua'i are updated daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Kaua'i?
As of August 2026, there are 5 operators available to choose from for flights from Lambert-St Louis Airport to Kaua'i.
How old do you have to be to fly from Lambert-St Louis Airport to Kaua'i?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Kaua'i.
What documentation or ID do you need to fly to Kaua'i?
The travel and health documents required for your trip to Kaua'i can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Kaua'i. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from St. Louis to Kaua'i?
Based on momondo bookings for flights between St. Louis and Kaua'i, the leading plane model is Boeing 737 MAX 8, making up 24.68% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 16.91%, Embraer 175 with 7.43%, and Airbus A319 with 6.86%.

Best airlines flying from St. Louis to Kaua'i

Compare and see reviews for airlines that fly from St. Louis to Kaua'i with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $308	Free Cancellation	Rating 7.8 8,504 reviews	Search Delta flights
United Airlines	PriceFrom $410	Free Cancellation	Rating 7.4 10,090 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $424	Free Cancellation	Rating 7.9 12,790 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $461	Free Cancellation	Rating 8.0 4,216 reviews	Search Southwest flights
American Airlines	PriceFrom $492	Free Cancellation	Rating 7.1 11,899 reviews	Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Kaua'i?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Kaua'i from St. Louis.

Can I find flights from St. Louis to Kaua'i with flexible booking policies on momondo?

All flight searches from St. Louis to Kaua'i on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from St. Louis to Kaua'i?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Kaua'i from St. Louis.

I’m not ready to book a flight from St. Louis to Kaua'i right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Kaua'i from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.