$238+ 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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LIH
Jun 24 — Jul 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
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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 May 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 May 25, 2026.
This American Airlines deal was found by Cheapflights users on 5/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:30 am
STL
- LIH
1 stop10h 44m
American Airlines
Wed 9/301:44 pm
LIH
- STL
2 stops14h 43m
American Airlines
Deal found 5/23![American Airlines logo]()
$470
This Delta deal was found by Cheapflights users on 5/21. 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.
Tue 9/157:30 am
STL
- LIH
2 stops16h 50m
Delta
Tue 9/229:45 pm
LIH
- STL
2 stops15h 15m
Delta
Deal found 5/21![Delta logo]()
$475
This American Airlines deal was found by Cheapflights users on 5/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:30 am
STL
- LIH
1 stop10h 44m
American Airlines
Tue 9/2210:49 pm
LIH
- STL
1 stop20h 01m
American Airlines
Deal found 5/22![American Airlines logo]()
$522
This Alaska Airlines deal was found by Cheapflights users on 5/21. 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.
Tue 9/223:19 pm
STL
- LIH
2 stops20h 21m
Multiple Airlines
Wed 9/304:52 pm
LIH
- STL
2 stops16h 29m
Multiple Airlines
Deal found 5/21![Multiple Airlines logo]()
$525
This Delta deal was found by Cheapflights users on 5/25. 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.
Tue 8/46:20 am
STL
- LIH
2 stops16h 21m
Delta
Tue 8/119:38 pm
LIH
- STL
2 stops16h 17m
Delta
Deal found 5/25![Delta logo]()
$530
This Alaska Airlines deal was found by Cheapflights users on 5/20. 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.
Wed 5/275:33 pm
STL
- LIH
1 stop22h 29m
Alaska Airlines
Wed 6/312:02 pm
LIH
- STL
1 stop23h 35m
Alaska Airlines
Deal found 5/20![Alaska Airlines logo]()
$561
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 May 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 May 25, 2026.
This Delta deal was found by Cheapflights users on 5/25. 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.
Tue 8/46:20 am
STL
- LIH
2 stops16h 21m
Delta
Tue 8/119:38 pm
LIH
- STL
2 stops16h 17m
Delta
Deal found 5/25![Delta logo]()
$530
This Alaska Airlines deal was found by Cheapflights users on 5/22. 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 8/115:37 pm
STL
- LIH
1 stop22h 31m
Multiple Airlines
Tue 8/1810:30 am
LIH
- STL
2 stops22h 36m
Multiple Airlines
Deal found 5/22![Multiple Airlines logo]()
$590
This United Airlines deal was found by Cheapflights users on 5/21. 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.
Sat 7/49:15 am
STL
- LIH
2 stops15h 59m
United Airlines
Mon 7/137:35 pm
LIH
- STL
1 stop23h 22m
United Airlines
Deal found 5/21![United Airlines logo]()
$754
This Delta deal was found by Cheapflights users on 5/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:20 am
STL
- LIH
2 stops17h 47m
Delta
Mon 8/179:38 pm
LIH
- STL
2 stops16h 17m
Delta
Deal found 5/24![Delta logo]()
$590
This Alaska Airlines deal was found by Cheapflights users on 5/25. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:37 pm
STL
- LIH
1 stop22h 31m
Multiple Airlines
Tue 8/1112:23 pm
LIH
- STL
1 stop23h 14m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$645
This Delta deal was found by Cheapflights users on 5/23. 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 7/76:21 am
STL
- LIH
2 stops17h 37m
Delta
Tue 7/149:55 pm
LIH
- STL
2 stops16h 05m
Delta
Deal found 5/23![Delta logo]()
$654
This Delta deal was found by Cheapflights users on 5/20. 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 6/28:53 am
STL
- LIH
2 stops13h 47m
Delta
Tue 6/99:55 pm
LIH
- STL
2 stops20h 28m
Delta
Deal found 5/20![Delta logo]()
$678
This Delta deal was found by Cheapflights users on 5/20. 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.
Thu 6/47:00 am
STL
- LIH
2 stops17h 04m
Delta
Sat 6/139:55 pm
LIH
- STL
2 stops16h 13m
Delta
Deal found 5/20![Delta logo]()
$733
Last-minute flights from St. Louis to Kaua'iDiscover last-minute flight deals from St. Louis to Kaua'i. Data last updated May 25, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Kaua'i. Data last updated May 25, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 5/20. 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.
Wed 5/275:33 pm
STL
- LIH
1 stop22h 29m
Alaska Airlines
Wed 6/312:02 pm
LIH
- STL
1 stop23h 35m
Alaska Airlines
Deal found 5/20![Alaska Airlines logo]()
$561
This Alaska Airlines deal was found by Cheapflights users on 5/20. 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.
Wed 5/275:33 pm
STL
- LIH
1 stop22h 29m
Multiple Airlines
Wed 6/32:39 pm
LIH
- STL
2 stops20h 58m
Multiple Airlines
Deal found 5/20![Multiple Airlines logo]()
$566
This Delta deal was found by Cheapflights users on 5/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:21 am
STL
- LIH
2 stops17h 45m
Delta
Sat 6/69:49 pm
LIH
- STL
2 stops16h 14m
Delta
Deal found 5/22![Delta logo]()
$672
This Delta deal was found by Cheapflights users on 5/21. 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.
Tue 6/28:53 am
STL
- LIH
2 stops13h 47m
Delta
Tue 6/99:55 pm
LIH
- STL
2 stops20h 28m
Delta
Deal found 5/21![Delta logo]()
$636
This American Airlines deal was found by Cheapflights users on 5/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/26:35 am
STL
- LIH
1 stop18h 46m
American Airlines
Tue 6/912:57 pm
LIH
- STL
2 stops14h 35m
American Airlines
Deal found 5/23![American Airlines logo]()
$687
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 May 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 May 25, 2026.
This Delta deal was found by Cheapflights users on 5/23. 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.
Mon 8/178:00 am
STL
- LIH
2 stops16h 07m
Delta
Deal found 5/23![Delta logo]()
$238
This United Airlines deal was found by Cheapflights users on 5/22. 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.
Tue 6/29:06 am
STL
- LIH
1 stop11h 31m
United Airlines
Deal found 5/22![United Airlines logo]()
$280
This Alaska Airlines deal was found by Cheapflights users on 5/20. 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.
Wed 7/156:37 am
STL
- LIH
2 stops19h 48m
Alaska Airlines
Deal found 5/20![Alaska Airlines logo]()
$293
This Alaska Airlines deal was found by Cheapflights users on 5/23. 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 8/176:02 am
STL
- LIH
1 stop13h 38m
Alaska Airlines
Deal found 5/23![Alaska Airlines logo]()
$322
This American Airlines deal was found by Cheapflights users on 5/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/156:37 am
STL
- LIH
1 stop19h 11m
American Airlines
Deal found 5/20![American Airlines logo]()
$402
This Kiwi.com deal was found by Cheapflights users on 5/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:25 pm
STL
- LIH
3 stops32h 00m
Multiple Airlines
Deal found 5/23![Multiple Airlines logo]()
$625
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/153:57 pm
STL
- LIH
3 stops34h 28m
Multiple Airlines
Deal found 5/20![Multiple Airlines logo]()
$772
This Kiwi.com deal was found by Cheapflights users on 5/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/26:21 am
STL
- LIH
3 stops20h 05m
Multiple Airlines
Deal found 5/22![Multiple Airlines logo]()
$869
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 May 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $470 (American Airlines) |
One-way from | $238 (Delta) |
Popular in | December |
Cheapest in | August |
Average price | $685 |
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 May 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
Quickest round-trip
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Tue 8/4
6:20 am-5:41 pm
2 stops16h 21m
Lihue
Tue 8/11
9:38 pm-6:55 pm
2 stops16h 17m
$530
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Tue 8/11
5:37 pm-11:08 am
1 stop22h 31m
Lihue
Tue 8/18
10:30 am-2:06 pm
2 stops22h 36m
$590
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Tue 8/11
6:20 am-7:07 pm
2 stops17h 47m
Lihue
Mon 8/17
9:38 pm-6:55 pm
2 stops16h 17m
$590
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Tue 8/4
5:37 pm-11:08 am
1 stop22h 31m
Lihue
Tue 8/11
12:23 pm-4:37 pm
1 stop23h 14m
$645
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Tue 7/7
6:21 am-6:58 pm
2 stops17h 37m
Lihue
Tue 7/14
9:55 pm-7:00 pm
2 stops16h 05m
$654
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Tue 6/2
8:53 am-5:40 pm
2 stops13h 47m
Lihue
Tue 6/9
9:55 pm-11:23 pm
2 stops20h 28m
$678
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Thu 6/4
7:00 am-7:04 pm
2 stops17h 04m
Lihue
Sat 6/13
9:55 pm-7:08 pm
2 stops16h 13m
$733
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Sat 7/4
9:15 am-8:14 pm
2 stops15h 59m
Lihue
Mon 7/13
7:35 pm-11:57 pm
1 stop23h 22m
$754
Cheapest one-way
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Mon 8/17
8:00 am-7:07 pm
2 stops16h 07m
$238
Quickest one-way
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Tue 6/2
9:06 am-3:37 pm
1 stop11h 31m
$280
Showing 1-10 of 15 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, August is the cheapest month in which you can book a flight from St. Louis to Kaua'i (average of $308). Flying from St. Louis to Kaua'i in June is currently the most expensive (average of $581). 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 May 25, 2026.
See what other customers who have flown with Alaska Airlines,Southwest, 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.
Boarding
8.1
Comfort
7.8
Food
7.0
Entertainment
7.0
Crew
8.5
Overall
7.9
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Boarding
8.1
Comfort
7.8
Food
7.0
Entertainment
7.0
Crew
8.5
Overall
7.9
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Boarding
8.1
Comfort
7.8
Food
7.0
Entertainment
7.0
Crew
8.5
Overall
7.9
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Boarding
8.1
Comfort
7.8
Food
7.0
Entertainment
7.0
Crew
8.5
Overall
7.9
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Boarding
8.1
Comfort
7.8
Food
7.0
Entertainment
7.0
Crew
8.5
Overall
7.9
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Boarding
8.1
Comfort
7.8
Food
7.0
Entertainment
7.0
Crew
8.5
Overall
7.9
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
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 May 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 2,558,603 searches. Data last updated May 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$308 | Average$579 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$410 | Average$586 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$446 | Average$679 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$461 | Average$764 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$492 | Average$710 | FlexibilityNo cancel fee | On-time71% |