$415 Find Cheap Flights from St. Louis to Kaua'i

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Kaua'i departing on 5/27. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Kaua'i

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Kaua'i, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Kaua'i, as well as popular online travel agencies
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Flight Deals

Book Cheap St. Louis to Kaua'i Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Kaua'i that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Kaua'i

Wed, May 27 - Wed, Jun 3
Alaska Airlines Logo
5:33 pm - 11:02 am
STL
-
LIH
22h 29m
1 stop
Alaska Airlines Logo
12:02 pm - 4:37 pm
LIH
-
STL
23h 35m
1 stop
$500Alaska Airlines
Wed, May 27 - Wed, Jun 3
Multiple Airlines Logo
5:33 pm - 2:09 pm
STL
-
LIH
25h 36m
2 stops
Multiple Airlines Logo
12:02 pm - 4:37 pm
LIH
-
STL
23h 35m
1 stop
$505Multiple Airlines
Mon, May 11 - Sat, May 16
Delta Logo
7:00 am - 7:06 pm
STL
-
LIH
17h 06m
2 stops
Delta Logo
9:55 pm - 11:21 pm
LIH
-
STL
20h 26m
2 stops
$527Delta
Tue, May 5 - Sun, May 10
Delta Logo
7:00 am - 5:40 pm
STL
-
LIH
15h 40m
2 stops
Delta Logo
9:55 pm - 11:21 pm
LIH
-
STL
20h 26m
2 stops
$530Delta
Wed, May 27 - Wed, Jun 3
Alaska Airlines Logo
5:33 pm - 11:02 am
STL
-
LIH
22h 29m
1 stop
Alaska Airlines Logo
12:02 pm - 4:37 pm
LIH
-
STL
23h 35m
1 stop
$545Alaska Airlines
Wed, May 27 - Wed, Jun 3
Multiple Airlines Logo
5:33 pm - 2:09 pm
STL
-
LIH
25h 36m
2 stops
Multiple Airlines Logo
12:02 pm - 4:37 pm
LIH
-
STL
23h 35m
1 stop
$550Multiple Airlines
Wed, May 27 - Wed, Jun 3
Multiple Airlines Logo
5:33 pm - 2:09 pm
STL
-
LIH
25h 36m
2 stops
Multiple Airlines Logo
2:39 pm - 4:37 pm
LIH
-
STL
20h 58m
2 stops
$555Multiple Airlines
Tue, Jul 7 - Tue, Jul 14
Delta Logo
6:21 am - 7:03 pm
STL
-
LIH
17h 42m
2 stops
Delta Logo
9:55 pm - 7:00 pm
LIH
-
STL
16h 05m
2 stops
$557Delta
Mon, May 4 - Mon, May 11
American Airlines Logo
8:00 am - 3:15 pm
STL
-
LIH
12h 15m
1 stop
American Airlines Logo
9:30 pm - 1:51 pm
LIH
-
STL
11h 21m
1 stop
$560American Airlines
Wed, May 27 - Wed, Jun 3
Multiple Airlines Logo
5:33 pm - 2:09 pm
STL
-
LIH
25h 36m
2 stops
Multiple Airlines Logo
2:39 pm - 4:37 pm
LIH
-
STL
20h 58m
2 stops
$564Multiple Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to Kaua'i flights

Get data-powered insights and trends into flights from St. Louis to Kaua'i to help you find the cheapest flights, the best time to fly and much more.

Can I save money by flying with a layover from St. Louis to Kaua'i?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $444, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from St. Louis to Kaua'i?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Kaua'i, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Kaua'i is August, when tickets cost $308 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is $747 and $581 respectively.

How far in advance should I book a flight from St. Louis to Kaua'i?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Kaua'i, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from St. Louis to Kaua'i, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 1 week before departure.

Good to know

Low seasonMarch
Cheapest flight$500
Best time to beat the crowds but there is an average 13% increase in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from St. Louis to Lihue

FAQs - booking Kaua'i flights

  • How does KAYAK find such low prices on flights from St. Louis to Kaua'i?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Kaua'i.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Kaua'i?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Kaua'i is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Kaua'i?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from St. Louis to Kaua'i with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Kaua'i?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from St. Louis to Kaua'i up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from St. Louis to Kaua'i

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Kaua'i. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Kaua'i? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4315 reviews
7.5Entertainment
8.6Crew
7.0Food
8.1Boarding
8.0Comfort
Airline reviews

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

10.0 Excellentlarry, Apr 2026
LGB - PHX
Read more Southwest reviews

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

no service at all due to turbulence. they should've at least given us snacks, there were only 10 people on the entire flight.

First time I've had to use the disabled accommodations. And I could not have had a better experience with Southwest, i was having trouble getting from one terminal to another due to my heart failure. And the next thing I know a Southwest agent had made sure. I had a wheelchair at all my flights. Can't thank them enough.

Delayed flight, lack of information, boarding process is a mess as is the carryon luggage causing issues when leaving the plane….just a poor experience.

Comfortable. Easy. No problems. Just wish they had gf options for snacks.

The crew was very kind and made going to Hawaii relaxing and fun to look forward to! Thank you Southwest for a pleasant flight!

This leg was much better, but we did have to have a 3 hour lay o er after coming from a very exhausting hiccup with our flight from BNA to Den

We waited in the airplane for over 45 min for a southwest employee to make the flight. This cause over half the plane to miss their connecting flight in Denver. When we confronted the desk upon arrival, they told us the only flight they had was the next day leaving at 8:50 pm!!! Or they offered to get us to Burbank or LA, but after that we were on our own to get back to Santa Barbara. I paid for a flight from sba to bna bna to sba. My re entry into mom mode has been 💯 rough because of southwest mistake with my flight. And now I’m leaving to Reno tomorrow for a vballl tournament and just discovered that my leg in Vegas has me and my 3 kids on a stand by flight even though I had booked these ticket last year November!! Do better southwest!

Southwest is kind of a slum airline. It’s gotten more expensive over the years for less and less service. I am a Southwest Chase Visa card holder and was forced to choose a seat in the 26th row in the middle seat. However my wife who is a rewards member but doesn’t hold a card or anything else, gets randomly assigned a normally paid seat in row 6! How does that work?

For the first time in a long time, the Wi-Fi actually worked the entire flight! The flight crew was amazing as usual.

You can standby to get on earlier flight if the seat is open.

Boarding was easy and quick. Staff was very friendly. Service of snacks and drinks by staff was outstanding.

Our flight when we finally got rerouted to a different destination than we were going was fine. But 2 days was taken out of our vacation because our flit was cancelled. We understand mechanical problems and of course don’t want to be on a plane that has mechanical problems.Wish there had been another solution.

Kayak wouldn’t refund me for a flight I was trying to cancel through Kayak. Alaska airlines said I had to cancel through Kayak. I called the customer service line and they couldn’t refund the flight that I booked through Kayak either. You stole my money. You will be hearing from my lawyer.

The bathroom trash container under the sink fell out and was like that long before my flight. The plane smelled of canned fish and floor was Deteriorating

I behave had better flights this one was old and poor

See previous. It was the flight from Honolulu to Kapalua that was cancelled.

Short trip from Honolulu to Kauai. Not a major issue. Only concern was the drop off of the luggage for departure. Only one person handling all of the passengers. She was busting her butt.

There was no food or entertainment. I was in the middle seat which was uncomfortable. The flight and crew were fine.

Good. Flight was good. Crew was good. Wish they offered coffee refills. Wish I didn’t have to pay for headphones. Otherwise good for a commercial flight.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

The crew was great. Very friendly and responsive. The plane was old, small and tight. We ran out of overhead space and I had to check. Middle seat was particularly tight.

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

Left early arrived early..right amount of talking from pilots..of course had to love the biscuit and water!

I would like a refund for the extra cost the seat I paid for. An oversized person sat next to me and I couldn’t fit on my seat and had to move to another seat.

Boarding gate at LAX was too crowded—two gates next to one another

The flight was delayed about an hour for a maintenance specialist to approve the maintenance repair

This flight was delayed but it worked in my favor because my Atlanta to Dallas flight was delayed.

This was a hard flight. 3 delays out of OKC (1 on the Tarmac). Delay in Atlanta coming to Dallas. total travel time was the equivalent of driving from OKC to Atlanta.

Like: flights are on time, good boarding process Can improve: planes are old, improve entertainment and make space more comfortable

Had to wait for a gate for a long time, then waited on the run way for a long time before leaving. The actual flights part was good.

The airplane was an old model, the overhead didn’t have enough room for people’s items and made boarding and boarding disappointing and stressful. Crew allowed passengers to bring more than the permitted baggage sizes.

Flying in the United States with the major airlines has become so underwhelming. A 2-3hr flight in most other parts of the world with the major carriers of the area comes with newer, CLEANER aircraft and significantly better in flight service in terms of both staff attitude and a actual meal service.

Everything you need to know for your flight to Kaua'i

Information on your arrival and departure airports