What airlines fly to Kaua'i?

Alaska Airlines, United Airlines and American Airlines are the top three most popular airlines that fly to Kaua'i from St. Louis according to our data. Alaska Airlines is the first choice among our users, with 28% of people opting to fly with this airline when traveling to Kaua'i. Keep in mind that there are 4 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?

American Airlines, Delta, 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 March 2026, there are 4 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.

$222 Cheap Flights from St. Louis to Kaua'i in 2026

1 adult

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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.

6:21 am - 12:22 pm

STL

LIH

11h 01m

1 stop

9:30 pm - 1:51 pm

LIH

STL

11h 21m

1 stop

$444American Airlines

Δευ, Απρ 27 - Τετ, Μαϊ 6

6:30 am - 12:12 pm

STL

LIH

10h 42m

1 stop

9:41 pm - 6:14 pm

LIH

STL

15h 33m

2 stops

$450American Airlines

Τετ, Αυγ 19 - Τρι, Αυγ 25

7:30 am - 5:12 pm

STL

LIH

14h 42m

2 stops

9:45 pm - 6:00 pm

LIH

STL

15h 15m

2 stops

$455Delta

Τετ, Αυγ 19 - Τρι, Αυγ 25

7:30 am - 7:20 pm

STL

LIH

16h 50m

2 stops

9:45 pm - 8:50 pm

LIH

STL

18h 05m

2 stops

$485Delta

Τρι, Αυγ 18 - Πεμ, Αυγ 27

6:21 am - 12:22 pm

STL

LIH

11h 01m

1 stop

9:30 pm - 5:21 pm

LIH

STL

14h 51m

2 stops

$491American Airlines

Δευ, Μαϊ 4 - Δευ, Μαϊ 11

6:21 am - 12:22 pm

STL

LIH

11h 01m

1 stop

9:30 pm - 1:51 pm

LIH

STL

11h 21m

1 stop

$492American Airlines

Δευ, Απρ 20 - Δευ, Απρ 27

5:55 am - 12:35 pm

STL

LIH

11h 40m

1 stop

8:25 pm - 12:05 pm

LIH

STL

10h 40m

1 stop

$494Southwest

Δευ, Αυγ 17 - Πεμ, Αυγ 27

7:00 am - 5:40 pm

STL

LIH

15h 40m

2 stops

8:20 pm - 5:26 pm

LIH

STL

16h 06m

2 stops

$495Delta

Δευ, Απρ 20 - Δευ, Απρ 27

5:20 am - 3:15 pm

STL

LIH

14h 55m

2 stops

9:30 pm - 5:21 pm

LIH

STL

14h 51m

2 stops

$496American Airlines

Δευ, Μαϊ 4 - Δευ, Μαϊ 11

3:24 pm - 9:56 pm

STL

LIH

11h 32m

1 stop

7:28 pm - 2:26 pm

LIH

STL

13h 58m

2 stops

$498Multiple Airlines

Τρι, Σεπ 1 - Παρ, Σεπ 4

American Airlines flights from St. Louis to Kaua'i

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

American Airlines

Apr 27

STL6:21 amLambert-St Louis

11h 01m

1 stop

LIH12:22 pmLihue

May 6

LIH9:30 pmLihue

11h 21m

1 stop

STL1:51 pmLambert-St Louis

$444

American Airlines

Aug 19

STL6:30 amLambert-St Louis

10h 42m

1 stop

LIH12:12 pmLihue

Aug 25

LIH9:41 pmLihue

15h 33m

2 stops

STL6:14 pmLambert-St Louis

$450

American Airlines

May 4

STL6:21 amLambert-St Louis

11h 01m

1 stop

LIH12:22 pmLihue

May 11

LIH9:30 pmLihue

14h 51m

2 stops

STL5:21 pmLambert-St Louis

$491

Delta flights from St. Louis to Kaua'i

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

Delta

Aug 19

STL7:30 amLambert-St Louis

14h 42m

2 stops

LIH5:12 pmLihue

Aug 25

LIH9:45 pmLihue

15h 15m

2 stops

STL6:00 pmLambert-St Louis

$455

Delta

Aug 18

STL7:30 amLambert-St Louis

16h 50m

2 stops

LIH7:20 pmLihue

Aug 27

LIH9:45 pmLihue

18h 05m

2 stops

STL8:50 pmLambert-St Louis

$485

Delta

Apr 20

STL7:00 amLambert-St Louis

15h 40m

2 stops

LIH5:40 pmLihue

Apr 27

LIH8:20 pmLihue

16h 06m

2 stops

STL5:26 pmLambert-St Louis

$495

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Δευ 4/27

6:21 am-12:22 pm

1 stop11h 01m

Lihue

Τετ 5/6

9:30 pm-1:51 pm

1 stop11h 21m

$444

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Τετ 8/19

6:30 am-12:12 pm

1 stop10h 42m

Lihue

Τρι 8/25

9:41 pm-6:14 pm

2 stops15h 33m

$450

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Τετ 8/19

7:30 am-5:12 pm

2 stops14h 42m

Lihue

Τρι 8/25

9:45 pm-6:00 pm

2 stops15h 15m

$455

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Τρι 8/18

7:30 am-7:20 pm

2 stops16h 50m

Lihue

Πεμ 8/27

9:45 pm-8:50 pm

2 stops18h 05m

$485

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Δευ 5/4

6:21 am-12:22 pm

1 stop11h 01m

Lihue

Δευ 5/11

9:30 pm-5:21 pm

2 stops14h 51m

$491

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Δευ 4/20

6:21 am-12:22 pm

1 stop11h 01m

Lihue

Δευ 4/27

9:30 pm-1:51 pm

1 stop11h 21m

$492

Quickest round-trip

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Δευ 8/17

5:55 am-12:35 pm

1 stop11h 40m

Lihue

Πεμ 8/27

8:25 pm-12:05 pm

1 stop10h 40m

$494

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Δευ 4/20

7:00 am-5:40 pm

2 stops15h 40m

Lihue

Δευ 4/27

8:20 pm-5:26 pm

2 stops16h 06m

$495

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Δευ 5/4

5:20 am-3:15 pm

2 stops14h 55m

Lihue

Δευ 5/11

9:30 pm-5:21 pm

2 stops14h 51m

$496

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Τρι 9/1

3:24 pm-9:56 pm

1 stop11h 32m

Lihue

Παρ 9/4

7:28 pm-2:26 pm

2 stops13h 58m

$498

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 $565. The month of August is another great option to travel to Kaua'i, with average flight prices from St. Louis averaging around $582.

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 weeks ahead of your departure date. In general, you can expect to find flights to Kaua'i for around $758 when searching weeks 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 $477 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 32m
Direct flights	None

The fastest flight from St. Louis to Kaua'i takes 11h 32m

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 March 2026, there are 4 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 26.06% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 19.62%, Embraer 175 with 6.23%, and Airbus A321-100/200 with 6.19%.

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
United Airlines	PriceFrom $440	Free Cancellation	Rating 7.4 9,469 reviews	Search United Airlines flights
American Airlines	PriceFrom $441	Free Cancellation	Rating 7.1 11,492 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $451	Free Cancellation	Rating 7.9 12,101 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $461	Free Cancellation	Rating 8.0 4,331 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.