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

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

What airlines fly to Kaua'i?

American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to Kaua'i from St. Louis according to our data. American Airlines is the first choice among our users, with 29% 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.

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 June 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.

$232 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

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:13 am - 4:59 pm

STL

LIH

11h 46m

1 stop

8:30 pm - 12:43 pm

LIH

STL

12h 13m

1 stop

$464United Airlines

Tue, Nov 10 - Tue, Nov 17

9:00 am - 7:44 pm

STL

LIH

15h 44m

2 stops

7:35 pm - 12:40 pm

LIH

STL

12h 05m

1 stop

$470United Airlines

Sat, Aug 29 - Sat, Sep 5

8:00 am - 7:16 pm

STL

LIH

16h 16m

2 stops

9:55 pm - 9:00 pm

LIH

STL

18h 05m

2 stops

$475Delta

Sat, Aug 29 - Sat, Sep 5

6:08 pm - 11:20 am

STL

LIH

22h 12m

1 stop

9:35 pm - 2:21 pm

LIH

STL

11h 46m

1 stop

$489Multiple Airlines

Tue, Sep 22 - Wed, Sep 30

6:25 am - 5:40 pm

STL

LIH

16h 15m

2 stops

8:32 pm - 5:40 pm

LIH

STL

16h 08m

2 stops

$490Delta

Tue, Sep 15 - Tue, Sep 22

6:08 pm - 11:20 am

STL

LIH

22h 12m

1 stop

2:30 pm - 5:10 pm

LIH

STL

21h 40m

2 stops

$495Multiple Airlines

Tue, Sep 15 - Tue, Sep 22

6:25 am - 5:40 pm

STL

LIH

16h 15m

2 stops

8:32 pm - 5:40 pm

LIH

STL

16h 08m

2 stops

$500Delta

Tue, Sep 15 - Tue, Sep 22

7:20 am - 8:22 pm

STL

LIH

17h 02m

2 stops

10:26 pm - 6:56 pm

LIH

STL

16h 30m

2 stops

$505Delta

Tue, Nov 10 - Tue, Nov 17

6:08 pm - 11:20 am

STL

LIH

22h 12m

1 stop

9:35 pm - 2:21 pm

LIH

STL

11h 46m

1 stop

$514Multiple Airlines

Tue, Sep 22 - Wed, Sep 30

6:08 pm - 11:20 am

STL

LIH

22h 12m

1 stop

5:02 pm - 2:21 pm

LIH

STL

16h 19m

2 stops

$520Multiple Airlines

Tue, Sep 22 - Wed, Sep 30

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Delta flights from St. Louis to Kaua'i

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

Delta

Aug 29

STL8:00 amLambert-St Louis

16h 16m

2 stops

LIH7:16 pmLihue

Sep 5

LIH9:55 pmLihue

18h 05m

2 stops

STL9:00 pmLambert-St Louis

$475

Delta

Sep 15

STL6:25 amLambert-St Louis

16h 15m

2 stops

LIH5:40 pmLihue

Sep 22

LIH8:32 pmLihue

16h 08m

2 stops

STL5:40 pmLambert-St Louis

$490

Delta

Sep 15

STL6:25 amLambert-St Louis

16h 15m

2 stops

LIH5:40 pmLihue

Sep 22

LIH8:32 pmLihue

16h 08m

2 stops

STL5:40 pmLambert-St Louis

$500

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 22

STL6:29 amLambert-St Louis

18h 45m

1 stop

LIH8:14 pmLihue

Sep 30

LIH9:35 pmLihue

11h 46m

1 stop

STL2:21 pmLambert-St Louis

$615

Alaska Airlines

Jul 7

STL6:37 amLambert-St Louis

19h 48m

2 stops

LIH9:25 pmLihue

Jul 14

LIH10:28 pmLihue

18h 24m

2 stops

STL9:52 pmLambert-St Louis

$713

Alaska Airlines

Jun 29

STL5:37 pmLambert-St Louis

22h 23m

1 stop

LIH11:00 amLihue

Jul 10

LIH10:28 pmLihue

10h 24m

1 stop

STL1:52 pmLambert-St Louis

$2,562

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 11/10

9:13 am-4:59 pm

1 stop11h 46m

Lihue

Tue 11/17

8:30 pm-12:43 pm

1 stop12h 13m

$464

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Sat 8/29

9:00 am-7:44 pm

2 stops15h 44m

Lihue

Sat 9/5

7:35 pm-12:40 pm

1 stop12h 05m

$470

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Sat 8/29

8:00 am-7:16 pm

2 stops16h 16m

Lihue

Sat 9/5

9:55 pm-9:00 pm

2 stops18h 05m

$475

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 9/22

6:08 pm-11:20 am

1 stop22h 12m

Lihue

Wed 9/30

9:35 pm-2:21 pm

1 stop11h 46m

$489

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 9/15

6:25 am-5:40 pm

2 stops16h 15m

Lihue

Tue 9/22

8:32 pm-5:40 pm

2 stops16h 08m

$490

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 9/15

6:08 pm-11:20 am

1 stop22h 12m

Lihue

Tue 9/22

2:30 pm-5:10 pm

2 stops21h 40m

$495

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 9/15

6:25 am-5:40 pm

2 stops16h 15m

Lihue

Tue 9/22

8:32 pm-5:40 pm

2 stops16h 08m

$500

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 11/10

7:20 am-8:22 pm

2 stops17h 02m

Lihue

Tue 11/17

10:26 pm-6:56 pm

2 stops16h 30m

$505

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 9/22

6:08 pm-11:20 am

1 stop22h 12m

Lihue

Wed 9/30

9:35 pm-2:21 pm

1 stop11h 46m

$514

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 9/22

6:08 pm-11:20 am

1 stop22h 12m

Lihue

Wed 9/30

5:02 pm-2:21 pm

2 stops16h 19m

$520

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 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, August 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 $308. The month of February is another great option to travel to Kaua'i, with average flight prices from St. Louis averaging around $311.

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 40m
Direct flights	None

The fastest flight from St. Louis to Kaua'i takes 11h 40m

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 June 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 24.83% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 17.02%, Embraer 175 with 7.88%, and Boeing 737-800 with 6.34%.

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 8,421 reviews	Search Delta flights
United Airlines	PriceFrom $410	Free Cancellation	Rating 7.4 9,865 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $446	Free Cancellation	Rating 7.9 12,551 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $461	Free Cancellation	Rating 7.9 4,241 reviews	Search Southwest flights
American Airlines	PriceFrom $492	Free Cancellation	Rating 7.1 11,716 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.