$232+ 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 7/26. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LIH
Jul 23 — Jul 301
Round-trip
1 adult, Economy
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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 June 23, 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 June 23, 2026.
This American Airlines deal was found by Cheapflights users on 6/22. 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 10/206:30 am
STL
- LIH
1 stop10h 45m
American Airlines
Sun 11/110:44 pm
LIH
- STL
1 stop10h 56m
American Airlines
Deal found 6/22![American Airlines logo]()
$464
This United Airlines deal was found by Cheapflights users on 6/19. 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 8/299:00 am
STL
- LIH
2 stops15h 44m
United Airlines
Sat 9/57:35 pm
LIH
- STL
1 stop12h 05m
United Airlines
Deal found 6/19![United Airlines logo]()
$470
This Delta deal was found by Cheapflights users on 6/22. 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.
Sat 8/298:00 am
STL
- LIH
2 stops16h 16m
Delta
Sat 9/58:41 pm
LIH
- STL
2 stops15h 03m
Delta
Deal found 6/22![Delta logo]()
$475
This Alaska Airlines deal was found by Cheapflights users on 6/19. 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
STL
- LIH
1 stop22h 12m
Multiple Airlines
Wed 9/309:35 pm
LIH
- STL
1 stop11h 46m
Multiple Airlines
Deal found 6/19![Multiple Airlines logo]()
$489
This Delta deal was found by Cheapflights users on 6/20. 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.
Mon 8/108:00 am
STL
- LIH
2 stops16h 16m
Delta
Thu 8/209:55 pm
LIH
- STL
2 stops16h 00m
Delta
Deal found 6/20![Delta logo]()
$490
This United Airlines deal was found by Cheapflights users on 6/22. 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.
Wed 12/29:13 am
STL
- LIH
1 stop11h 46m
United Airlines
Wed 12/98:30 pm
LIH
- STL
1 stop12h 13m
United Airlines
Deal found 6/22![United Airlines logo]()
$493
This Alaska Airlines deal was found by Cheapflights users on 6/21. 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 9/156:08 pm
STL
- LIH
1 stop22h 12m
Multiple Airlines
Tue 9/221:43 pm
LIH
- STL
2 stops22h 27m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$495
This United Airlines deal was found by Cheapflights users on 6/22. 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.
Sat 10/2410:27 am
STL
- LIH
2 stops14h 17m
United Airlines
Tue 10/277:30 pm
LIH
- STL
2 stops13h 43m
United Airlines
Deal found 6/22![United Airlines logo]()
$499
This Delta deal was found by Cheapflights users on 6/18. 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 9/227:05 am
STL
- LIH
2 stops15h 35m
Delta
Wed 9/309:50 pm
LIH
- STL
2 stops14h 47m
Delta
Deal found 6/18![Delta logo]()
$500
This Southwest deal was found by Cheapflights users on 6/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/26:30 am
STL
- LIH
2 stops13h 45m
Southwest
Wed 12/99:05 pm
LIH
- STL
2 stops11h 20m
Southwest
Deal found 6/22![Southwest logo]()
$505
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 June 23, 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 June 23, 2026.
This Delta deal was found by Cheapflights users on 6/22. 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.
Sat 8/298:00 am
STL
- LIH
2 stops16h 16m
Delta
Sat 9/58:41 pm
LIH
- STL
2 stops15h 03m
Delta
Deal found 6/22![Delta logo]()
$475
This Alaska Airlines deal was found by Cheapflights users on 6/19. 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
STL
- LIH
1 stop22h 12m
Multiple Airlines
Wed 9/309:35 pm
LIH
- STL
1 stop11h 46m
Multiple Airlines
Deal found 6/19![Multiple Airlines logo]()
$489
This Delta deal was found by Cheapflights users on 6/19. 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 9/227:05 am
STL
- LIH
2 stops15h 35m
Delta
Wed 9/309:50 pm
LIH
- STL
2 stops16h 54m
Delta
Deal found 6/19![Delta logo]()
$475
This Alaska Airlines deal was found by Cheapflights users on 6/21. 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 9/156:08 pm
STL
- LIH
1 stop22h 12m
Multiple Airlines
Tue 9/221:43 pm
LIH
- STL
2 stops22h 27m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$495
This Delta deal was found by Cheapflights users on 6/18. 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 9/286:25 am
STL
- LIH
2 stops16h 15m
Delta
Wed 10/79:26 pm
LIH
- STL
2 stops15h 35m
Delta
Deal found 6/18![Delta logo]()
$475
This Delta deal was found by Cheapflights users on 6/22. 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.
Tue 10/206:30 am
STL
- LIH
2 stops17h 52m
Delta
Sun 11/19:45 pm
LIH
- STL
2 stops17h 11m
Delta
Deal found 6/22![Delta logo]()
$475
Last-minute flights from St. Louis to Kaua'iDiscover last-minute flight deals from St. Louis to Kaua'i. Data last updated June 23, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Kaua'i. Data last updated June 23, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/22. 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.
Sun 6/288:36 am
STL
- LIH
2 stops16h 45m
American Airlines
Sun 7/59:15 pm
LIH
- STL
1 stop11h 38m
American Airlines
Deal found 6/22![American Airlines logo]()
$657
This American Airlines deal was found by Cheapflights users on 6/21. 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.
Wed 7/16:35 am
STL
- LIH
1 stop18h 46m
American Airlines
Fri 7/319:05 pm
LIH
- STL
1 stop21h 53m
American Airlines
Deal found 6/21![American Airlines logo]()
$627
This American Airlines deal was found by Cheapflights users on 6/20. 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.
Sun 7/55:32 am
STL
- LIH
2 stops14h 04m
American Airlines
Thu 7/910:25 pm
LIH
- STL
2 stops15h 05m
American Airlines
Deal found 6/20![American Airlines logo]()
$658
This Delta deal was found by Cheapflights users on 6/22. 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.
Tue 7/78:00 am
STL
- LIH
2 stops14h 41m
Delta
Tue 7/149:55 pm
LIH
- STL
2 stops16h 05m
Delta
Deal found 6/22![Delta logo]()
$571
This American Airlines deal was found by Cheapflights users on 6/21. 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.
Sat 7/119:44 am
STL
- LIH
2 stops16h 04m
American Airlines
Tue 7/218:56 pm
LIH
- STL
1 stop18h 27m
American Airlines
Deal found 6/21![American Airlines logo]()
$575
This Expedia deal was found by Cheapflights users on 6/18. 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.
Tue 7/215:37 pm
STL
- LIH
1 stop22h 31m
Multiple Airlines
Tue 7/2810:28 pm
LIH
- STL
2 stops16h 55m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$526
This United Airlines deal was found by Cheapflights users on 6/18. 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 7/215:10 am
STL
- LIH
2 stops13h 06m
United Airlines
Tue 7/282:31 pm
LIH
- STL
2 stops14h 36m
United Airlines
Deal found 6/18![United Airlines logo]()
$570
This American Airlines deal was found by Cheapflights users on 6/23. 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.
Thu 7/236:37 am
STL
- LIH
1 stop19h 11m
American Airlines
Wed 7/299:15 pm
LIH
- STL
1 stop21h 43m
American Airlines
Deal found 6/23![American Airlines logo]()
$579
This Delta deal was found by Cheapflights users on 6/23. 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.
Thu 7/236:21 am
STL
- LIH
2 stops17h 37m
Delta
Wed 7/299:55 pm
LIH
- STL
2 stops16h 05m
Delta
Deal found 6/23![Delta logo]()
$623
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 June 23, 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 June 23, 2026.
This United Airlines deal was found by Cheapflights users on 6/18. 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.
Sun 7/269:06 am
STL
- LIH
1 stop11h 31m
United Airlines
Deal found 6/18![United Airlines logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 6/18. 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.
Sun 7/266:34 pm
STL
- LIH
3 stops49h 06m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$707
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 June 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $464 (American Airlines) |
One-way from | $232 (United Airlines) |
Popular in | March |
Cheapest in | August |
Average price | $844 |
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 June 23, 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
Sat 8/29
8:00 am-7:16 pm
2 stops16h 16m
Lihue
Sat 9/5
8:41 pm-4:44 pm
2 stops15h 03m
$475
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Tue 9/22
7:05 am-5:40 pm
2 stops15h 35m
Lihue
Wed 9/30
9:50 pm-7:44 pm
2 stops16h 54m
$475
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Mon 9/28
6:25 am-5:40 pm
2 stops16h 15m
Lihue
Wed 10/7
9:26 pm-6:01 pm
2 stops15h 35m
$475
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Tue 10/20
6:30 am-7:22 pm
2 stops17h 52m
Lihue
Sun 11/1
9:45 pm-6:56 pm
2 stops17h 11m
$475
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Tue 9/22
6:08 pm-11:20 am
1 stop22h 12m
Lihue
Wed 9/30
9:35 pm-2:21 pm
1 stop11h 46m
$489
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Tue 9/15
6:08 pm-11:20 am
1 stop22h 12m
Lihue
Tue 9/22
1:43 pm-5:10 pm
2 stops22h 27m
$495
Cheapest one-way
Quickest one-way
St. LouisLihue
STL - LIH
STLLIH
Lambert-St Louis
Sun 7/26
9:06 am-3:37 pm
1 stop11h 31m
$232
Sorted 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 June 23, 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
Food
7.0
Overall
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Boarding
8.1
Food
7.0
Overall
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Boarding
8.1
Food
7.0
Overall
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Boarding
8.1
Food
7.0
Overall
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Boarding
8.1
Food
7.0
Overall
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Boarding
8.1
Food
7.0
Overall
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
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 June 23, 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 June 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$308 | Average$566 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$410 | Average$638 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$446 | Average$679 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$461 | Average$763 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$492 | Average$710 | FlexibilityNo cancel fee | On-time71% |