What airlines fly to Kaua'i?

United Airlines, American Airlines and Southwest are the top three most popular airlines that fly to Kaua'i from St. Louis according to our data. United Airlines is the first choice among our users, with 31% 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 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.

$557 Cheap Flights from St. Louis to Kaua'i in 2026/27

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How to get the cheapest flight ticket from St. Louis to Kaua'i

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

In general, December 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 $583. The month of January is another great option to travel to Kaua'i, with average flight prices from St. Louis averaging around $597.

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.

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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 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 25.64% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 17.99%, Embraer 175 with 7.96%, and Airbus A319 with 7.04%.

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 $410	Free Cancellation	Rating 7.4 10,233 reviews	Search United Airlines flights
Southwest	PriceFrom $461	Free Cancellation	Rating 8.0 4,199 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $469	Free Cancellation	Rating 7.9 12,963 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $492	Free Cancellation	Rating 7.0 12,073 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.