What airlines fly to Kaua'i?

American Airlines, Alaska Airlines and United Airlines 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 36% 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?

United Airlines, Alaska Airlines, and Southwest 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 July 2025, 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.

$205 Cheap Flights from St. Louis to Kaua'i in 2025

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

Round-trip

One-way

Last minute

Cheap round-trip flights

6:30 pm - 1:25 pmSTL-LIH

23h 55m1 stop

7:55 pm - 5:34 pmLIH-STL

16h 39m2 stops

$415Alaska Airlines

Find Deal

Sun, Sep 21 - Fri, Sep 26

6:00 am - 3:50 pmSTL-LIH

14h 50m2 stops

6:59 pm - 5:34 pmLIH-STL

17h 35m2 stops

$420Alaska Airlines

Find Deal

Wed, Sep 17 - Wed, Sep 24

11:05 am - 7:58 pmSTL-LIH

13h 53m2 stops

11:10 pm - 4:53 pmLIH-STL

12h 43m1 stop

$430United Airlines

Find Deal

Fri, Sep 5 - Fri, Sep 19

2:55 pm - 6:24 amSTL-LIH

19h 29m2 stops

7:42 pm - 1:52 pmLIH-STL

14h 10m2 stops

$436Alaska Airlines

Find Deal

Wed, Jan 14 - Sun, Jan 18

6:25 am - 1:33 pmSTL-LIH

11h 08m1 stop

10:14 pm - 1:33 pmLIH-STL

11h 19m1 stop

$441American Airlines

Find Deal

Fri, Dec 5 - Sat, Dec 13

6:00 am - 3:50 pmSTL-LIH

14h 50m2 stops

11:00 am - 2:39 pmLIH-STL

22h 39m1 stop

$442Alaska Airlines

Find Deal

Wed, Sep 17 - Wed, Sep 24

9:00 am - 7:58 pmSTL-LIH

15h 58m2 stops

11:10 pm - 4:33 pmLIH-STL

12h 23m2 stops

$472United Airlines

Find Deal

Fri, Sep 5 - Fri, Sep 19

8:08 am - 6:42 pmSTL-LIH

14h 34m1 stop

10:10 pm - 11:50 pmLIH-STL

21h 40m1 stop

$483American Airlines

Find Deal

Mon, Jan 5 - Sat, Jan 10

5:50 am - 12:50 pmSTL-LIH

12h 00m1 stop

8:40 pm - 4:20 pmLIH-STL

14h 40m1 stop

$507Southwest

Find Deal

Sun, Sep 28 - Mon, Oct 6

6:00 am - 4:00 pmSTL-LIH

15h 00m2 stops

8:40 pm - 1:20 pmLIH-STL

11h 40m1 stop

$512Southwest

Find Deal

Sun, Sep 28 - Mon, Oct 6

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

STL6:30 pmLambert-St Louis

23h 55m

1 stop

LIH1:25 pmLihue

Sep 26

LIH7:55 pmLihue

16h 39m

2 stops

STL5:34 pmLambert-St Louis

$415

Find similar

Alaska Airlines

Sep 17

STL6:00 amLambert-St Louis

14h 50m

2 stops

LIH3:50 pmLihue

Sep 24

LIH6:59 pmLihue

17h 35m

2 stops

STL5:34 pmLambert-St Louis

$420

Find similar

Alaska Airlines

Jan 14

STL2:55 pmLambert-St Louis

19h 29m

2 stops

LIH6:24 amLihue

Jan 18

LIH7:42 pmLihue

14h 10m

2 stops

STL1:52 pmLambert-St Louis

$436

Find similar

United Airlines flights from St. Louis to Kaua'i

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

United Airlines

Sep 5

STL11:05 amLambert-St Louis

13h 53m

2 stops

LIH7:58 pmLihue

Sep 19

LIH11:10 pmLihue

12h 43m

1 stop

STL4:53 pmLambert-St Louis

$430

Find similar

United Airlines

Sep 5

STL9:00 amLambert-St Louis

15h 58m

2 stops

LIH7:58 pmLihue

Sep 19

LIH11:10 pmLihue

12h 23m

2 stops

STL4:33 pmLambert-St Louis

$472

Find similar

United Airlines

Aug 14

STL8:54 amLambert-St Louis

11h 41m

1 stop

LIH3:35 pmLihue

Aug 21

LIH7:40 pmLihue

15h 04m

2 stops

STL3:44 pmLambert-St Louis

$510

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Sun 9/21

6:30 pm-1:25 pm

1 stop23h 55m

Lihue

Fri 9/26

7:55 pm-5:34 pm

2 stops16h 39m

$415

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Wed 9/17

6:00 am-3:50 pm

2 stops14h 50m

Lihue

Wed 9/24

6:59 pm-5:34 pm

2 stops17h 35m

$420

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Fri 9/5

11:05 am-7:58 pm

2 stops13h 53m

Lihue

Fri 9/19

11:10 pm-4:53 pm

1 stop12h 43m

$430

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Wed 1/14

2:55 pm-6:24 am

2 stops19h 29m

Lihue

Sun 1/18

7:42 pm-1:52 pm

2 stops14h 10m

$436

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Fri 12/5

6:25 am-1:33 pm

1 stop11h 08m

Lihue

Sat 12/13

10:14 pm-1:33 pm

1 stop11h 19m

$441

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Wed 9/17

6:00 am-3:50 pm

2 stops14h 50m

Lihue

Wed 9/24

11:00 am-2:39 pm

1 stop22h 39m

$442

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Fri 9/5

9:00 am-7:58 pm

2 stops15h 58m

Lihue

Fri 9/19

11:10 pm-4:33 pm

2 stops12h 23m

$472

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Mon 1/5

8:08 am-6:42 pm

1 stop14h 34m

Lihue

Sat 1/10

10:10 pm-11:50 pm

1 stop21h 40m

$483

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Sun 9/28

5:50 am-12:50 pm

1 stop12h 00m

Lihue

Mon 10/6

8:40 pm-4:20 pm

1 stop14h 40m

$507

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Sun 9/28

6:00 am-4:00 pm

2 stops15h 00m

Lihue

Mon 10/6

8:40 pm-1:20 pm

1 stop11h 40m

$512

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, January 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 $530. The month of September is another great option to travel to Kaua'i, with average flight prices from St. Louis averaging around $579.

What is the cheapest day to depart on your flight to Kaua'i?

According to our data, Tuesday is the cheapest day to fly to Kaua'i from St. Louis. The lowest ticket price found for a Tuesday departure recently was $585. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $884. These prices are subject to change though, so be sure to set up a Price Alert for flights to Kaua'i.

What is the cheapest time of day to depart on your flight to Kaua'i?

The cheapest time of day to fly to Kaua'i is in the evening when flights can be purchased for as low as $622. In contrast, the most expensive time of day to depart to Kaua'i is in the afternoon when prices are around $1,338.

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 $712 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 $563 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

Best Price Found	$205
Fastest flight time	10h 36m
Direct flights	None
Airports in Kaua'i	1 airport

The best one-way flight to Kaua'i from St. Louis in the past 72 hours is $205. The best round-trip flight deal from St. Louis to Kaua'i found on momondo in the last 72 hours is $415.

The fastest flight from St. Louis to Kaua'i takes 10h 36m

There are no direct flights from St. Louis to Kaua'i. Popular non-direct route for this connection is Lambert-St Louis Airport - Lihue Airport.

There is 1 airport near Kaua'i: Lihue (LIH)

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 July 2025, 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 737-800 Passenger/BBJ2 (winglets), making up 19.71% of the total bookings. Other popular models include Boeing 737 MAX 8 with 15.78%, Boeing 737-700 Passenger/BBJ1 (winglets) with 15.06%, and Embraer 175 with 7.27%.

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
American Airlines	PriceFrom $389	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $446	Free Cancellation	Rating 8.0 7,981 reviews	Search Delta flights
Alaska Airlines	PriceFrom $451	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $454	Free Cancellation	Rating 7.4 8,900 reviews	Search United Airlines flights
Southwest	PriceFrom $530	Free Cancellation	Rating 8.0 4,246 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.

An easier way to manage your Kaua'i trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Find better results for your trip to Kaua'i

Popular cities in Kaua'i

Flights to New Yorkfrom $39

Flights to Los Angelesfrom $37

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Flights to Chicagofrom $59

Flights to Orlandofrom $54

Flights to Las Vegasfrom $35

Flights to San Franciscofrom $49

Flights to Washington, D.C.from $49

Flights to Bostonfrom $77

Flights to Atlantafrom $29

Flights to Dallasfrom $55

Flights to Seattlefrom $93

Cheap flights from St. Louis to Kaua'i from $205

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Kaua'i departing on 11/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

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

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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

United Airlines flights from St. Louis to Kaua'i

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

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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

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

What is the cheapest day to depart on your flight to Kaua'i?

What is the cheapest time of day to depart on your flight to Kaua'i?

The cheapest time of day to fly to Kaua'i is in the evening when flights can be purchased for as low as $622. In contrast, the most expensive time of day to depart to Kaua'i is in the afternoon when prices are around $1,338.

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

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.

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

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

What airlines fly 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

Best Price Found

Fastest flight time

Direct flights

Airports in Kaua'i

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

How many operators does momondo search 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?

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

What is the most popular plane model from St. Louis to Kaua'i?

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

Why use momondo?

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

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

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

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

An easier way to manage your Kaua'i trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Kaua'i

Popular cities in Kaua'i

Popular flights according to clicks in the last 7 days on momondo