$217+ 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 11/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LIH
Sep 24 — Oct 11
Round-trip
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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
Cheapest
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 August 25, 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 August 25, 2026.
This Delta deal was found by Cheapflights users on 8/23. 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 9/156:15 am -
2 stops16h 24m
Tue 9/228:45 pm -
2 stops18h 13m
Deal found 8/23![Delta logo]()
$445
This United Airlines deal was found by Cheapflights users on 8/25. 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.
Tue 9/159:00 am -
1 stop11h 40m
Tue 9/227:35 pm -
1 stop12h 05m
Deal found 8/25![United Airlines logo]()
$462
This American Airlines deal was found by Cheapflights users on 8/25. 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.
Sun 10/256:04 am -
1 stop11h 21m
Sun 11/110:35 pm -
1 stop11h 08m
Deal found 8/25![American Airlines logo]()
$464
This Alaska Airlines deal was found by Cheapflights users on 8/24. 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 9/226:08 pm -
1 stop22h 12m
Wed 9/3011:25 am -
1 stop24h 45m
Deal found 8/24![Multiple Airlines logo]()
$465
This Alaska Airlines deal was found by Cheapflights users on 8/21. 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 9/146:08 pm -
1 stop22h 12m
Mon 9/2811:25 am -
1 stop24h 45m
Deal found 8/21![Multiple Airlines logo]()
$495
This Alaska Airlines deal was found by Cheapflights users on 8/22. 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 9/156:08 pm -
1 stop22h 12m
Tue 9/222:30 pm -
2 stops21h 40m
Deal found 8/22![Multiple Airlines logo]()
$500
This Delta deal was found by Cheapflights users on 8/25. 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.
Fri 10/307:00 am -
2 stops17h 14m
Wed 11/410:51 pm -
2 stops18h 18m
Deal found 8/25![Delta logo]()
$505
This United Airlines deal was found by Cheapflights users on 8/22. 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.
Mon 9/146:15 am -
2 stops14h 25m
Mon 9/287:35 pm -
2 stops15h 08m
Deal found 8/22![United Airlines logo]()
$508
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 August 25, 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 August 25, 2026.
This Delta deal was found by Cheapflights users on 8/20. 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 9/158:46 am -
2 stops13h 53m
Tue 9/229:54 pm -
2 stops17h 04m
Deal found 8/20![Delta logo]()
$445
This Alaska Airlines deal was found by Cheapflights users on 8/24. 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 9/226:08 pm -
1 stop22h 12m
Wed 9/3011:25 am -
1 stop24h 45m
Deal found 8/24![Multiple Airlines logo]()
$465
This United Airlines deal was found by Cheapflights users on 8/22. 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.
Mon 9/146:15 am -
2 stops14h 25m
Mon 9/287:35 pm -
2 stops15h 08m
Deal found 8/22![United Airlines logo]()
$508
This Alaska Airlines deal was found by Cheapflights users on 8/20. 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 9/156:08 pm -
1 stop22h 12m
Tue 9/227:21 pm -
2 stops18h 17m
Deal found 8/20![Multiple Airlines logo]()
$470
This Delta deal was found by Cheapflights users on 8/25. 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.
Fri 10/307:00 am -
2 stops17h 14m
Wed 11/410:51 pm -
2 stops18h 18m
Deal found 8/25![Delta logo]()
$505
This Alaska Airlines deal was found by Cheapflights users on 8/22. 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 9/286:29 am -
2 stops15h 01m
Thu 10/12:30 pm -
2 stops18h 51m
Deal found 8/22![Multiple Airlines logo]()
$505
This Delta deal was found by Cheapflights users on 8/21. 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 9/286:00 am -
2 stops18h 10m
Fri 10/28:45 pm -
2 stops13h 04m
Deal found 8/21![Delta logo]()
$535
Last-minute flights from St. Louis to Kaua'iDiscover last-minute flight deals from St. Louis to Kaua'i. Data last updated August 25, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Kaua'i. Data last updated August 25, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 8/21. 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 9/146:08 pm -
1 stop22h 12m
Mon 9/2811:25 am -
1 stop24h 45m
Deal found 8/21![Multiple Airlines logo]()
$495
This United Airlines deal was found by Cheapflights users on 8/22. 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.
Mon 9/146:15 am -
2 stops14h 25m
Mon 9/287:35 pm -
2 stops15h 08m
Deal found 8/22![United Airlines logo]()
$508
This Delta deal was found by Cheapflights users on 8/23. 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 9/156:15 am -
2 stops16h 24m
Tue 9/228:45 pm -
2 stops18h 13m
Deal found 8/23![Delta logo]()
$445
This United Airlines deal was found by Cheapflights users on 8/25. 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.
Tue 9/159:00 am -
1 stop11h 40m
Tue 9/227:35 pm -
1 stop12h 05m
Deal found 8/25![United Airlines logo]()
$462
This Alaska Airlines deal was found by Cheapflights users on 8/22. 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 9/156:08 pm -
1 stop22h 12m
Tue 9/222:30 pm -
2 stops21h 40m
Deal found 8/22![Multiple Airlines logo]()
$500
This Alaska Airlines deal was found by Cheapflights users on 8/24. 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 9/226:08 pm -
1 stop22h 12m
Wed 9/3011:25 am -
1 stop24h 45m
Deal found 8/24![Multiple Airlines logo]()
$465
This Alaska Airlines deal was found by Cheapflights users on 8/23. 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 9/286:08 pm -
1 stop22h 12m
Thu 10/19:35 pm -
1 stop11h 46m
Deal found 8/23![Multiple Airlines logo]()
$464
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 August 25, 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 August 25, 2026.
This American Airlines deal was found by Cheapflights users on 8/21. 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 11/168:00 am -
1 stop12h 10m
Deal found 8/21![American Airlines logo]()
$217
This United Airlines deal was found by Cheapflights users on 8/21. 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.
Mon 11/166:15 am -
2 stops14h 40m
Deal found 8/21![United Airlines logo]()
$223
This Alaska Airlines deal was found by Cheapflights users on 8/24. 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 9/146:08 pm -
1 stop22h 12m
Deal found 8/24![Multiple Airlines logo]()
$232
This Delta deal was found by Cheapflights users on 8/25. 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 9/148:00 am -
2 stops16h 10m
Deal found 8/25![Delta logo]()
$316
This United Airlines deal was found by Cheapflights users on 8/22. 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.
Mon 9/144:40 pm -
1 stop28h 00m
Deal found 8/22![United Airlines logo]()
$361
This American Airlines deal was found by Cheapflights users on 8/25. 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 9/148:00 am -
1 stop12h 02m
Deal found 8/25![American Airlines logo]()
$404
This Kiwi.com deal was found by Cheapflights users on 8/21. 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.
Mon 11/167:00 am -
3 stops42h 57m
Deal found 8/21![Multiple Airlines logo]()
$453
This Expedia deal was found by Cheapflights users on 8/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:30 am -
1 stop32h 40m
Deal found 8/23![Multiple Airlines logo]()
$943
This Delta deal was found by Cheapflights users on 8/23. 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.
Fri 9/186:15 am -
2 stops17h 55m
Deal found 8/23![Delta logo]()
$1,028
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 August 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $445 (Delta) |
One-way from | $217 (American Airlines) |
Popular in | June |
Cheapest in | April |
Average price | $739 |
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 7,457,451 searches. Data last updated August 25, 2026.
Use the filters below to find and compare flights from St. Louis to Kaua'i that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisLihue
STL Lambert-St Louis - LIH Lihue
STLLIH
Lambert-St Louis
Tue 9/15
8:46 am-5:39 pm
2 stops13h 53m
Lihue
Tue 9/22
9:54 pm-7:58 pm
2 stops17h 04m
$445
St. LouisLihue
STL Lambert-St Louis - LIH Lihue
STLLIH
Lambert-St Louis
Tue 9/22
6:08 pm-11:20 am
1 stop22h 12m
Lihue
Wed 9/30
11:25 am-5:10 pm
1 stop24h 45m
$465
St. LouisLihue
STL Lambert-St Louis - LIH Lihue
STLLIH
Lambert-St Louis
Tue 9/15
6:08 pm-11:20 am
1 stop22h 12m
Lihue
Tue 9/22
7:21 pm-6:38 pm
2 stops18h 17m
$470
St. LouisLihue
STL Lambert-St Louis - LIH Lihue
STLLIH
Lambert-St Louis
Fri 10/30
7:00 am-7:14 pm
2 stops17h 14m
Lihue
Wed 11/4
10:51 pm-9:09 pm
2 stops18h 18m
$505
St. LouisLihue
STL Lambert-St Louis - LIH Lihue
STLLIH
Lambert-St Louis
Mon 9/28
6:29 am-4:30 pm
2 stops15h 01m
Lihue
Thu 10/1
2:30 pm-2:21 pm
2 stops18h 51m
$505
Quickest round-trip
St. LouisLihue
STL Lambert-St Louis - LIH Lihue
STLLIH
Lambert-St Louis
Mon 9/14
6:15 am-3:40 pm
2 stops14h 25m
Lihue
Mon 9/28
7:35 pm-3:43 pm
2 stops15h 08m
$508
St. LouisLihue
STL Lambert-St Louis - LIH Lihue
STLLIH
Lambert-St Louis
Mon 9/28
6:00 am-7:10 pm
2 stops18h 10m
Lihue
Fri 10/2
8:45 pm-2:49 pm
2 stops13h 04m
$535
Cheapest one-way
Quickest one-way
St. LouisLihue
STL Lambert-St Louis - LIH Lihue
STLLIH
Lambert-St Louis
Mon 11/16
8:00 am-4:10 pm
1 stop12h 10m
$217
St. LouisLihue
STL Lambert-St Louis - LIH Lihue
STLLIH
Lambert-St Louis
Mon 11/16
6:15 am-4:55 pm
2 stops14h 40m
$223
St. LouisLihue
STL Lambert-St Louis - LIH Lihue
STLLIH
Lambert-St Louis
Mon 9/14
6:08 pm-11:20 am
1 stop22h 12m
$232
Showing 1-10 of 14 resultsSorted by cheapest first
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, April is the cheapest month in which you can book a flight from St. Louis to Kaua'i (average of $561). Flying from St. Louis to Kaua'i in June is currently the most expensive (average of $984). 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 August 25, 2026.
See what other customers who have flown with Southwest,Alaska Airlines, andDelta 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
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Kaua'i. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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St. Louis and Kaua'i flights
Browse other St. Louis and Kaua'i flight options. Last updated on August 25, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated August 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$308 | Average$566 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$410 | Average$651 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$461 | Average$793 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$469 | Average$679 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$492 | Average$759 | FlexibilityNo cancel fee | On-time71% |