$211+ Cheap flights from St. Louis (STL) to Kaua'i
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LIH
Mar 10 — Mar 171
1 adult, Economy
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Find cheap flights from St. Louis to Kaua'i with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Kaua'i
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Best
Last-minute
One-way
Cheapest flights from St. Louis to Kaua'iExplore the most affordable flight options available from St. Louis to Kaua'i. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 8, 2026.
Explore the most affordable flight options available from St. Louis to Kaua'i. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:00 am
STL
- LIH
1 stop12h 50m
Multiple Airlines
Wed 3/114:22 pm
LIH
- STL
2 stops16h 29m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$422
This Alaska Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/107:00 am
STL
- LIH
2 stops16h 02m
Multiple Airlines
Wed 3/114:22 pm
LIH
- STL
2 stops16h 29m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$433
This American Airlines deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/95:12 am
STL
- LIH
2 stops16h 02m
American Airlines
Tue 3/179:30 pm
LIH
- STL
2 stops14h 43m
American Airlines
Deal found 2/7![American Airlines logo]()
$434
This Kiwi.com deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:00 am
STL
- LIH
1 stop12h 50m
Multiple Airlines
Sun 3/86:32 pm
LIH
- STL
2 stops14h 19m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$466
This American Airlines deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:30 am
STL
- LIH
1 stop10h 42m
American Airlines
Tue 8/181:45 pm
LIH
- STL
2 stops14h 32m
American Airlines
Deal found 2/7![American Airlines logo]()
$471
This Delta deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:20 am
STL
- LIH
2 stops17h 20m
Delta
Mon 5/119:40 pm
LIH
- STL
2 stops18h 34m
Delta
Deal found 2/6![Delta logo]()
$474
This Delta deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:20 am
STL
- LIH
2 stops17h 20m
Delta
Sun 5/109:40 pm
LIH
- STL
2 stops16h 23m
Delta
Deal found 2/6![Delta logo]()
$478
This Alaska Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:00 am
STL
- LIH
1 stop12h 50m
Alaska Airlines
Wed 3/1110:19 pm
LIH
- STL
1 stop10h 32m
Alaska Airlines
Deal found 2/6![Alaska Airlines logo]()
$483
This American Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/45:12 am
STL
- LIH
2 stops16h 02m
American Airlines
Wed 3/119:00 pm
LIH
- STL
1 stop21h 59m
American Airlines
Deal found 2/6![American Airlines logo]()
$485
Best flights from St. Louis to Kaua'iDiscover carefully curated flight deals from St. Louis to Kaua'i that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 8, 2026.
Discover carefully curated flight deals from St. Louis to Kaua'i that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 8, 2026.
This Alaska Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/107:00 am
STL
- LIH
2 stops16h 02m
Multiple Airlines
Wed 3/114:22 pm
LIH
- STL
2 stops16h 29m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$433
This Delta deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:20 am
STL
- LIH
2 stops17h 20m
Delta
Mon 5/119:40 pm
LIH
- STL
2 stops16h 23m
Delta
Deal found 2/7![Delta logo]()
$434
This American Airlines deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/95:12 am
STL
- LIH
2 stops16h 02m
American Airlines
Tue 3/179:30 pm
LIH
- STL
2 stops14h 43m
American Airlines
Deal found 2/7![American Airlines logo]()
$434
This Alaska Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:00 am
STL
- LIH
2 stops29h 02m
Multiple Airlines
Wed 3/114:22 pm
LIH
- STL
2 stops16h 29m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$473
This Delta deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:20 am
STL
- LIH
2 stops17h 20m
Delta
Sun 5/109:40 pm
LIH
- STL
2 stops16h 23m
Delta
Deal found 2/5![Delta logo]()
$478
This American Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/247:58 am
STL
- LIH
1 stop12h 41m
American Airlines
Tue 3/310:00 pm
LIH
- STL
1 stop11h 51m
American Airlines
Deal found 2/5![American Airlines logo]()
$517
This Alaska Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/97:00 am
STL
- LIH
1 stop19h 18m
Multiple Airlines
Wed 3/114:22 pm
LIH
- STL
2 stops16h 29m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$497
This Delta deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:02 am
STL
- LIH
2 stops16h 38m
Delta
Sat 5/28:20 pm
LIH
- STL
2 stops16h 06m
Delta
Deal found 2/5![Delta logo]()
$504
This Alaska Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:00 am
STL
- LIH
2 stops29h 02m
Multiple Airlines
Wed 3/114:22 pm
LIH
- STL
2 stops16h 29m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$513
This Alaska Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/47:00 am
STL
- LIH
2 stops27h 17m
Multiple Airlines
Sun 3/86:32 pm
LIH
- STL
2 stops14h 19m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$518
Last-minute flights from St. Louis to Kaua'iDiscover last-minute flight deals from St. Louis to Kaua'i. Data last updated February 8, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Kaua'i. Data last updated February 8, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/276:00 am
STL
- LIH
2 stops15h 14m
American Airlines
Fri 3/610:30 pm
LIH
- STL
2 stops12h 58m
American Airlines
Deal found 2/5![American Airlines logo]()
$478
This Alaska Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/27:00 am
STL
- LIH
2 stops30h 22m
Multiple Airlines
Wed 3/114:22 pm
LIH
- STL
2 stops16h 29m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$482
This Kiwi.com deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:00 am
STL
- LIH
1 stop12h 50m
Multiple Airlines
Wed 3/114:22 pm
LIH
- STL
2 stops16h 29m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$422
This Kiwi.com deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:00 am
STL
- LIH
1 stop12h 50m
Multiple Airlines
Sun 3/86:32 pm
LIH
- STL
2 stops14h 19m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$466
This Alaska Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:00 am
STL
- LIH
1 stop12h 50m
Alaska Airlines
Wed 3/1110:19 pm
LIH
- STL
1 stop10h 32m
Alaska Airlines
Deal found 2/6![Alaska Airlines logo]()
$483
This American Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/45:12 am
STL
- LIH
2 stops16h 02m
American Airlines
Wed 3/119:00 pm
LIH
- STL
1 stop21h 59m
American Airlines
Deal found 2/6![American Airlines logo]()
$485
This American Airlines deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/95:12 am
STL
- LIH
2 stops16h 02m
American Airlines
Tue 3/179:30 pm
LIH
- STL
2 stops14h 43m
American Airlines
Deal found 2/7![American Airlines logo]()
$434
This Alaska Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/97:00 am
STL
- LIH
1 stop19h 18m
Multiple Airlines
Wed 3/114:22 pm
LIH
- STL
2 stops16h 29m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$497
This Alaska Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/107:00 am
STL
- LIH
2 stops16h 02m
Multiple Airlines
Wed 3/114:22 pm
LIH
- STL
2 stops16h 29m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$433
One-way flights from St. Louis to Kaua'iSearch for one-way flight options from St. Louis to Kaua'i. Find affordable one-way fares based on user searches. Data last updated February 8, 2026.
Search for one-way flight options from St. Louis to Kaua'i. Find affordable one-way fares based on user searches. Data last updated February 8, 2026.
This Alaska Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:00 am
STL
- LIH
1 stop12h 50m
Alaska Airlines
Deal found 2/6![Alaska Airlines logo]()
$211
This American Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/45:12 am
STL
- LIH
2 stops16h 02m
American Airlines
Deal found 2/6![American Airlines logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:00 am
STL
- LIH
2 stops27h 57m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$256
This Alaska Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/27:00 am
STL
- LIH
2 stops34h 03m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$272
This Alaska Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/27:00 am
STL
- LIH
1 stop19h 18m
Alaska Airlines
Deal found 2/6![Alaska Airlines logo]()
$281
This United Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/117:40 am
STL
- LIH
2 stops19h 17m
United Airlines
Deal found 2/5![United Airlines logo]()
$287
This Alaska Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:00 am
STL
- LIH
1 stop19h 18m
Alaska Airlines
Deal found 2/6![Alaska Airlines logo]()
$302
This Alaska Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:00 am
STL
- LIH
1 stop19h 18m
Alaska Airlines
Deal found 2/6![Alaska Airlines logo]()
$312
This Alaska Airlines deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1111:46 am
STL
- LIH
2 stops27h 41m
Alaska Airlines
Deal found 2/7![Alaska Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/78:17 am
STL
- LIH
2 stops16h 45m
United Airlines
Deal found 2/6![United Airlines logo]()
$332
This United Airlines deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/66:05 pm
STL
- LIH
2 stops22h 36m
United Airlines
Deal found 2/6![United Airlines logo]()
$393
Find flight deals from St. Louis to Kaua'i
Keep the following information in mind while searching for St. Louis to Kaua'i flight deals. Data was last updated February 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $422 (Kiwi.com) |
One-way from | $211 (Alaska Airlines) |
Popular in | December |
Cheapest in | November |
Average price | $741 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Kaua'i that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 8, 2026.
Use the filters below to find and compare flights from St. Louis to Kaua'i that are best for you.
Fly from
St. Louis
Fly to
Kaua'i
Route
Depart
Return
Price
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Tue 3/10
7:00 am-6:02 pm
2 stops16h 02m
Lihue
Wed 3/11
4:22 pm-1:51 pm
2 stops16h 29m
$433
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Mon 5/4
6:20 am-6:40 pm
2 stops17h 20m
Lihue
Mon 5/11
9:40 pm-7:03 pm
2 stops16h 23m
$434
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Mon 3/9
5:12 am-4:14 pm
2 stops16h 02m
Lihue
Tue 3/17
9:30 pm-5:13 pm
2 stops14h 43m
$434
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Tue 3/3
7:00 am-8:02 am
2 stops29h 02m
Lihue
Wed 3/11
4:22 pm-1:51 pm
2 stops16h 29m
$473
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Tue 5/5
6:20 am-6:40 pm
2 stops17h 20m
Lihue
Sun 5/10
9:40 pm-7:03 pm
2 stops16h 23m
$478
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Mon 3/9
7:00 am-9:18 pm
1 stop19h 18m
Lihue
Wed 3/11
4:22 pm-1:51 pm
2 stops16h 29m
$497
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Mon 4/27
7:02 am-6:40 pm
2 stops16h 38m
Lihue
Sat 5/2
8:20 pm-5:26 pm
2 stops16h 06m
$504
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Sun 3/1
7:00 am-8:02 am
2 stops29h 02m
Lihue
Wed 3/11
4:22 pm-1:51 pm
2 stops16h 29m
$513
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Tue 2/24
7:58 am-4:39 pm
1 stop12h 41m
Lihue
Tue 3/3
10:00 pm-1:51 pm
1 stop11h 51m
$517
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Wed 3/4
7:00 am-6:17 am
2 stops27h 17m
Lihue
Sun 3/8
6:32 pm-1:51 pm
2 stops14h 19m
$518
Showing 1-10 of 19 results
Best time to book a flight from St. Louis to Kaua'i
Have a flexible travel schedule? Discover the best time to fly to Kaua'i from St. Louis with our price prediction graph.
STL-LIH
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Kaua'i
STL-zzFUS
STL-LIH
What is the cheapest month to book a flight from St. Louis to Kaua'i?
Currently, August is the cheapest month in which you can book a flight from St. Louis to Kaua'i (average of $328). Flying from St. Louis to Kaua'i in July is currently the most expensive (average of $770). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Reviews of airlines servicing Kaua'i
Get insights into the airlines that provide service to Kaua'i. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kaua'i. Reviews last updated February 8, 2026.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from St. Louis to Kaua'i have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Crew
8.5
Food
7.1
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
8.0
Crew
8.5
Food
7.1
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
8.0
Crew
8.5
Food
7.1
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
8.0
Crew
8.5
Food
7.1
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
8.0
Crew
8.5
Food
7.1
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
8.0
Crew
8.5
Food
7.1
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Related info for your journey
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Top 5 airlines flying from St. Louis to Kaua'i
Discover the top 5 airlines that operate flights from St. Louis to Kaua'i. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$308 | Average$467 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$427 | Average$712 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$440 | Average$765 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$451 | Average$583 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$477 | Average$803 | FlexibilityNo cancel fee | On-time63% |