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

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

What airlines fly to Kaua'i?

American Airlines, Alaska 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 27% 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 February 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.

$217 Cheap Flights from St. Louis to Kaua'i in 2026

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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.

8:54 am - 3:47 pm

STL

LIH

11h 53m

1 stop

12:40 pm - 5:50 am

LIH

STL

12h 10m

1 stop

$456United Airlines

Tue, Apr 21 - Fri, Apr 24

8:54 am - 3:47 pm

STL

LIH

11h 53m

1 stop

12:40 pm - 9:25 am

LIH

STL

15h 45m

2 stops

$468United Airlines

Tue, Apr 21 - Fri, Apr 24

7:58 am - 4:39 pm

STL

LIH

12h 41m

1 stop

9:30 pm - 3:28 pm

LIH

STL

12h 58m

2 stops

$473American Airlines

Mon, Feb 23 - Mon, Mar 9

6:00 am - 5:14 pm

STL

LIH

15h 14m

2 stops

9:30 pm - 5:13 pm

LIH

STL

14h 43m

2 stops

$478American Airlines

Mon, Feb 23 - Mon, Mar 9

6:00 am - 6:40 pm

STL

LIH

17h 40m

2 stops

8:31 pm - 1:32 pm

LIH

STL

12h 01m

2 stops

$483Delta

Mon, May 4 - Mon, May 11

10:14 am - 8:23 pm

STL

LIH

15h 09m

2 stops

1:03 pm - 5:47 am

LIH

STL

11h 44m

1 stop

$495United Airlines

Sat, May 2 - Fri, May 8

8:46 am - 8:23 pm

STL

LIH

16h 37m

2 stops

1:03 pm - 9:30 am

LIH

STL

15h 27m

2 stops

$501United Airlines

Sat, May 9 - Fri, May 15

7:58 am - 4:39 pm

STL

LIH

12h 41m

1 stop

9:00 pm - 1:47 pm

LIH

STL

11h 47m

1 stop

$512American Airlines

Mon, Feb 23 - Mon, Mar 9

6:00 am - 5:14 pm

STL

LIH

15h 14m

2 stops

10:30 pm - 3:28 pm

LIH

STL

12h 58m

2 stops

$513American Airlines

Fri, Feb 27 - Fri, Mar 6

5:00 am - 1:15 pm

STL

LIH

12h 15m

1 stop

9:10 pm - 1:35 pm

LIH

STL

11h 25m

2 stops

$518Southwest

Mon, Mar 2 - Mon, Mar 16

American Airlines flights from St. Louis to Kaua'i

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

American Airlines

Feb 23

STL7:58 amLambert-St Louis

12h 41m

1 stop

LIH4:39 pmLihue

Mar 9

LIH9:30 pmLihue

12h 58m

2 stops

STL3:28 pmLambert-St Louis

$473

American Airlines

Feb 27

STL6:00 amLambert-St Louis

15h 14m

2 stops

LIH5:14 pmLihue

Mar 6

LIH10:30 pmLihue

12h 58m

2 stops

STL3:28 pmLambert-St Louis

$478

American Airlines

Feb 27

STL7:58 amLambert-St Louis

12h 41m

1 stop

LIH4:39 pmLihue

Mar 6

LIH10:30 pmLihue

12h 58m

2 stops

STL3:28 pmLambert-St Louis

$508

Delta flights from St. Louis to Kaua'i

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

Delta

May 4

STL6:00 amLambert-St Louis

17h 40m

2 stops

LIH6:40 pmLihue

May 11

LIH8:31 pmLihue

12h 01m

2 stops

STL1:32 pmLambert-St Louis

$483

Delta

May 5

STL6:20 amLambert-St Louis

17h 20m

2 stops

LIH6:40 pmLihue

May 10

LIH8:31 pmLihue

17h 32m

2 stops

STL7:03 pmLambert-St Louis

$535

Delta

Apr 27

STL7:02 amLambert-St Louis

16h 38m

2 stops

LIH6:40 pmLihue

May 2

LIH8:20 pmLihue

16h 06m

2 stops

STL5:26 pmLambert-St Louis

$544

Fly from

Fly to

Route

Depart

Return

Price

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 4/21

8:54 am-3:47 pm

1 stop11h 53m

Lihue

Fri 4/24

12:40 pm-5:50 am

1 stop12h 10m

$456

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 4/21

8:54 am-3:47 pm

1 stop11h 53m

Lihue

Fri 4/24

12:40 pm-9:25 am

2 stops15h 45m

$468

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Mon 2/23

7:58 am-4:39 pm

1 stop12h 41m

Lihue

Mon 3/9

9:30 pm-3:28 pm

2 stops12h 58m

$473

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Mon 2/23

6:00 am-5:14 pm

2 stops15h 14m

Lihue

Mon 3/9

9:30 pm-5:13 pm

2 stops14h 43m

$478

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Mon 5/4

6:00 am-6:40 pm

2 stops17h 40m

Lihue

Mon 5/11

8:31 pm-1:32 pm

2 stops12h 01m

$483

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Sat 5/2

10:14 am-8:23 pm

2 stops15h 09m

Lihue

Fri 5/8

1:03 pm-5:47 am

1 stop11h 44m

$495

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Sat 5/9

8:46 am-8:23 pm

2 stops16h 37m

Lihue

Fri 5/15

1:03 pm-9:30 am

2 stops15h 27m

$501

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Mon 2/23

7:58 am-4:39 pm

1 stop12h 41m

Lihue

Mon 3/9

9:00 pm-1:47 pm

1 stop11h 47m

$512

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

$513

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Mon 3/2

5:00 am-1:15 pm

1 stop12h 15m

Lihue

Mon 3/16

9:10 pm-1:35 pm

2 stops11h 25m

$518

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, November 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 $552. The month of August is another great option to travel to Kaua'i, with average flight prices from St. Louis averaging around $585.

How far in advance should I book a flight to Kaua'i?

You are more likely to see cheaper flights to Kaua'i from St. Louis when booking week ahead of your departure date. In general, you can expect to find flights to Kaua'i for around $750 when searching week out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kaua'i from St. Louis for as low as $521 on momondo.

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 53m
Direct flights	None

The fastest flight from St. Louis to Kaua'i takes 11h 53m

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

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 February 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 23.86% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 19.01%, Embraer 175 with 6.48%, and Airbus A321-100/200 with 6.06%.

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 7.9 8,138 reviews	Search Delta flights
American Airlines	PriceFrom $416	Free Cancellation	Rating 7.2 11,216 reviews	Search American Airlines flights
United Airlines	PriceFrom $440	Free Cancellation	Rating 7.4 9,236 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $451	Free Cancellation	Rating 8.0 11,833 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $477	Free Cancellation	Rating 8.0 4,272 reviews	Search Southwest 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.