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

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

What airlines fly to Kaua'i?

American Airlines, Southwest and Alaska 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 29% 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.

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 May 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.

$383 Cheap Flights from St. Louis to Kaua'i in 2026

1 adult

0 bags

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.

6:30 am - 12:14 pm

STL

LIH

10h 44m

1 stop

10:49 pm - 11:50 pm

LIH

STL

20h 01m

1 stop

$443American Airlines

Tue, Sep 15 - Tue, Sep 22

6:30 am - 12:14 pm

STL

LIH

10h 44m

1 stop

1:44 pm - 9:27 am

LIH

STL

14h 43m

2 stops

$488American Airlines

Tue, Sep 15 - Tue, Sep 22

6:30 am - 7:20 pm

STL

LIH

17h 50m

2 stops

9:45 pm - 6:00 pm

LIH

STL

15h 15m

2 stops

$500Delta

Tue, Sep 15 - Tue, Sep 22

8:50 am - 5:12 pm

STL

LIH

13h 22m

2 stops

9:45 pm - 6:00 pm

LIH

STL

15h 15m

2 stops

$505Delta

Tue, Sep 15 - Tue, Sep 22

7:00 am - 7:06 pm

STL

LIH

17h 06m

2 stops

9:55 pm - 7:03 pm

LIH

STL

16h 08m

2 stops

$514Delta

Wed, May 27 - Wed, Jun 3

6:30 am - 12:14 pm

STL

LIH

10h 44m

1 stop

1:44 pm - 9:27 am

LIH

STL

14h 43m

2 stops

$518American Airlines

Tue, Sep 15 - Tue, Sep 22

6:30 am - 12:14 pm

STL

LIH

10h 44m

1 stop

10:49 pm - 11:50 pm

LIH

STL

20h 01m

1 stop

$522American Airlines

Tue, Sep 15 - Tue, Sep 22

10:16 am - 8:08 pm

STL

LIH

14h 52m

2 stops

9:41 pm - 10:55 pm

LIH

STL

20h 14m

1 stop

$533American Airlines

Sat, Aug 29 - Sat, Sep 5

3:17 pm - 6:40 am

STL

LIH

20h 23m

2 stops

5:35 pm - 2:21 pm

LIH

STL

15h 46m

2 stops

$535Multiple Airlines

Tue, Sep 15 - Tue, Sep 22

9:00 am - 7:44 pm

STL

LIH

15h 44m

2 stops

7:35 pm - 12:40 pm

LIH

STL

12h 05m

1 stop

$539United Airlines

Fri, Sep 11 - Wed, Sep 23

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Delta flights from St. Louis to Kaua'i

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

Delta

Sep 15

STL6:30 amLambert-St Louis

17h 50m

2 stops

LIH7:20 pmLihue

Sep 22

LIH9:45 pmLihue

15h 15m

2 stops

STL6:00 pmLambert-St Louis

$500

Delta

Sep 15

STL8:50 amLambert-St Louis

13h 22m

2 stops

LIH5:12 pmLihue

Sep 22

LIH9:45 pmLihue

15h 15m

2 stops

STL6:00 pmLambert-St Louis

$505

Delta

May 27

STL7:00 amLambert-St Louis

17h 06m

2 stops

LIH7:06 pmLihue

Jun 3

LIH9:55 pmLihue

16h 08m

2 stops

STL7:03 pmLambert-St Louis

$514

American Airlines flights from St. Louis to Kaua'i

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

American Airlines

Sep 15

STL6:30 amLambert-St Louis

10h 44m

1 stop

LIH12:14 pmLihue

Sep 22

LIH10:49 pmLihue

20h 01m

1 stop

STL11:50 pmLambert-St Louis

$443

American Airlines

Sep 15

STL6:30 amLambert-St Louis

10h 44m

1 stop

LIH12:14 pmLihue

Sep 22

LIH1:44 pmLihue

14h 43m

2 stops

STL9:27 amLambert-St Louis

$488

American Airlines

Sep 15

STL6:30 amLambert-St Louis

10h 44m

1 stop

LIH12:14 pmLihue

Sep 22

LIH1:44 pmLihue

14h 43m

2 stops

STL9:27 amLambert-St Louis

$518

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 9/15

6:30 am-12:14 pm

1 stop10h 44m

Lihue

Tue 9/22

10:49 pm-11:50 pm

1 stop20h 01m

$443

Quickest round-trip

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 9/15

6:30 am-12:14 pm

1 stop10h 44m

Lihue

Tue 9/22

1:44 pm-9:27 am

2 stops14h 43m

$488

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 9/15

6:30 am-7:20 pm

2 stops17h 50m

Lihue

Tue 9/22

9:45 pm-6:00 pm

2 stops15h 15m

$500

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 9/15

8:50 am-5:12 pm

2 stops13h 22m

Lihue

Tue 9/22

9:45 pm-6:00 pm

2 stops15h 15m

$505

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Wed 5/27

7:00 am-7:06 pm

2 stops17h 06m

Lihue

Wed 6/3

9:55 pm-7:03 pm

2 stops16h 08m

$514

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 9/15

6:30 am-12:14 pm

1 stop10h 44m

Lihue

Tue 9/22

1:44 pm-9:27 am

2 stops14h 43m

$518

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 9/15

6:30 am-12:14 pm

1 stop10h 44m

Lihue

Tue 9/22

10:49 pm-11:50 pm

1 stop20h 01m

$522

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Sat 8/29

10:16 am-8:08 pm

2 stops14h 52m

Lihue

Sat 9/5

9:41 pm-10:55 pm

1 stop20h 14m

$533

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Tue 9/15

3:17 pm-6:40 am

2 stops20h 23m

Lihue

Tue 9/22

5:35 pm-2:21 pm

2 stops15h 46m

$535

St. LouisLihue

STL - LIH

STLLIH

Lambert-St Louis

Fri 9/11

9:00 am-7:44 pm

2 stops15h 44m

Lihue

Wed 9/23

7:35 pm-12:40 pm

1 stop12h 05m

$539

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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.

How far in advance should I book a flight from St. Louis 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 $753 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 $489 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 35m
Direct flights	None

The fastest flight from St. Louis to Kaua'i takes 11h 35m

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 May 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 25.98% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 18.60%, Embraer 175 with 7.07%, and Airbus A319 with 6.00%.

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 $421	Free Cancellation	Rating 7.4 9,683 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $446	Free Cancellation	Rating 7.9 12,330 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $461	Free Cancellation	Rating 7.9 4,305 reviews	Search Southwest flights
American Airlines	PriceFrom $492	Free Cancellation	Rating 7.1 11,672 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.