STL - KOA

$217 Find Cheap Flights from St. Louis to Kailua-Kona - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Kailua-Kona departing on 9/29. 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

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Everything you should know

Cheapest round-trip
$434
Typical prices: $512-$771
United Airlines
Wed 8/26Wed 9/2
STL - KOA • 1 stop
Cheapest one-way
$217
Overall average: $382
American Airlines
Tue 9/29
STL - KOA • 1 stop
Top airlines
Cheapest • from $434 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between St. Louis and Kailua-Kona. You'll need at least 1 connection.
Insights
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Top layover airports
Cheapest • Avg $611 (round-trip)
Shortest trip • 11h 38m (one-way)
Insights
Insights
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Insights
When to travel
Cheapest • 29% price drop
Most popular
Good to know
Good to know
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We hope you love your trip to Kailua-Kona!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Kailua-Kona (STL-KOA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Kailua-Kona 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 Kailua-Kona

Wed, Aug 26 - Wed, Sep 2
United Airlines Logo
9:00 am - 3:43 pm
STL
-
KOA
11h 43m
1 stop
United Airlines Logo
8:00 pm - 12:40 pm
KOA
-
STL
11h 40m
1 stop
$434United Airlines
Wed, Aug 26 - Wed, Sep 2
United Airlines Logo
9:30 am - 7:35 pm
STL
-
KOA
15h 05m
2 stops
United Airlines Logo
8:00 pm - 12:40 pm
KOA
-
STL
11h 40m
1 stop
$440United Airlines
Wed, Aug 26 - Wed, Sep 2
American Airlines Logo
8:36 am - 4:15 pm
STL
-
KOA
12h 39m
2 stops
American Airlines Logo
9:45 pm - 2:45 pm
KOA
-
STL
12h 00m
2 stops
$465American Airlines
Fri, Sep 11 - Fri, Sep 18
American Airlines Logo
8:00 am - 2:03 pm
STL
-
KOA
11h 03m
1 stop
American Airlines Logo
9:45 pm - 1:44 pm
KOA
-
STL
10h 59m
1 stop
$479American Airlines
Fri, Sep 11 - Tue, Sep 15
Delta Logo
6:15 am - 7:15 pm
STL
-
KOA
18h 00m
2 stops
Delta Logo
8:55 pm - 5:37 pm
KOA
-
STL
15h 42m
2 stops
$490Delta
Wed, Sep 9 - Tue, Sep 15
Delta Logo
6:15 am - 7:15 pm
STL
-
KOA
18h 00m
2 stops
Delta Logo
8:55 pm - 5:37 pm
KOA
-
STL
15h 42m
2 stops
$500Delta
Thu, Nov 12 - Mon, Nov 16
Southwest Logo
5:40 am - 1:40 pm
STL
-
KOA
12h 00m
1 stop
Southwest Logo
9:30 pm - 12:05 pm
KOA
-
STL
10h 35m
1 stop
$524Southwest
Wed, Nov 11 - Mon, Nov 16
Southwest Logo
5:10 am - 2:00 pm
STL
-
KOA
12h 50m
1 stop
Southwest Logo
9:30 pm - 12:05 pm
KOA
-
STL
10h 35m
1 stop
$524Southwest
Tue, Sep 1 - Tue, Sep 8
Multiple Airlines Logo
6:08 pm - 11:06 am
STL
-
KOA
21h 58m
1 stop
Multiple Airlines Logo
7:15 pm - 2:21 pm
KOA
-
STL
14h 06m
2 stops
$560Multiple Airlines
Tue, Sep 1 - Tue, Sep 8
Multiple Airlines Logo
6:08 pm - 11:06 am
STL
-
KOA
21h 58m
1 stop
Multiple Airlines Logo
2:10 pm - 2:21 pm
KOA
-
STL
19h 11m
2 stops
$560Multiple Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to Kailua-Kona flights

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

How much is a round-trip flight from St. Louis to Kailua-Kona?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Kailua-Kona departing in August.

Flight prices are below average for this route right now.

Flights to Kailua-Kona from St. Louis usually cost between $501 and $808 in August.
The lowest price found in the past 5 days was $434 on United Airlines (Aug 26-Sep 2).

What is the cheapest month to fly from St. Louis to Kailua-Kona?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Kailua-Kona, 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 Kailua-Kona is November, where tickets cost $484 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,017 and $901 respectively.

How far in advance should I book a flight from St. Louis to Kailua-Kona?

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 Kailua-Kona, 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 Kailua-Kona, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low season

November

Cheapest flight

$217
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from St. Louis to Kailua-Kona

When to book flights from St. Louis to Kailua-Kona

Are your dates flexible? Find out the best times to travel from St. Louis to Kailua-Kona based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Kailua-Kona

  • What is the cheapest flight from St. Louis to Kailua-Kona?

    In the last 5 days, the lowest price for a flight from St. Louis to Kailua-Kona was $217 for a one-way ticket and $434 for a round-trip.

  • Do I need a passport to fly between St. Louis and Kailua-Kona?

    No, a passport isn't needed to fly from St. Louis to Kailua-Kona. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from St. Louis to Kailua-Kona?

    On your way to Kailua-Kona, you’ll fly out from Lambert-St Louis. You’ll be landing at Kona Intl.

  • Which aircraft models fly most regularly from St. Louis to Kailua-Kona?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Kailua-Kona?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between St. Louis and Kailua-Kona, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Kailua-Kona, Southwest or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Kailua-Kona are Southwest and Alaska Airlines. With an average price for the route of $661 and an overall rating of 8.0, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $739 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from St. Louis to Kailua-Kona?

    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 Kailua-Kona.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Kailua-Kona from St. Louis 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 Kailua-Kona?

    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 to Kailua-Kona with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and KOA can sometimes prove cheaper using this method.

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

    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 to Kailua-Kona from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from St. Louis to Kailua-Kona

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Kailua-Kona. 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 Kailua-Kona? 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 4228 reviews
8.1Boarding
7.5Entertainment
8.6Crew
8.0Comfort
7.0Food
Airline reviews

Snacks are always pretzels. Why can't you also offer peanuts ?

6.0 GoodAnonymous, Mar 2026
STL - HOU
Read more Southwest reviews

Snacks are always pretzels. Why can't you also offer peanuts ?

Only downside was the legroom and seat width, which is always a problem unless I spend more for a premium seat.

I liked the crew member who gave flight instructions on "in case of a problem:. The seats are so small that only a young teenager could sit in middle seat.

Very good. Sad to learn Southwest is going start to charge for bags

Much better than the.last. flight on SW on Thanksgiving day

Exceptional crew! Friendly and professional. Pleasant attitude and treated everyone with respect.

The flight was promptly on schedule and Southwest delivered everything they promised. No excuses for any shortfalls just 100% ownership of their responsibilities and business. The boarding and seating policy is a complete shambles. What started out as a great idea when Southwest first hit the market has been turned into a disaster due to the lack of integrity in many of the people who fly Southwest and take advantage of Southwest generosity at the expense of their fellow passengers.

Crew was excellent - Plane was fine. Media was good, could use more kid shows; Not a fan of the brownie brittle -- snack could be slightly better.

Left on time and arrived early. Brand new plane and no parts missing. Comfortable seats. The actual Captain spoke prior to the flight and reassured everyone about safety. Crew was so nice and fun. Perfect flight!

Everything went smoothly and the plane wasn’t full. It was delayed though. The delay was increased due to a crew change which was frustrating.

It was fine. It was a 30 minute flight so there was water or fruit juice and no food. Which was totally fine. The check in, gate and flight crew were all excellent.

I didn’t order food so can’t really say how it was. Overall, it was a great experience.

Had to sit and wait to get off the plane for closeto a hour. My son also flying to a different destination that day also had like a 2.5 hr delay

Tickets we booked together in January became two different connecting flights. VERY PISSED a about this and a terrible start to our bucket list vacation

Flight was delayed which led to missed connection, but rebooked on a more direct flight at the last minute and arrived in Juneau on time with all our luggage. Little stressful and our family seating got split, but it all worked out in the end.

they didn't fix a plane and we were delayed travelling an extra 12 hours.

This flight was how a flight should be. The flight from Hawaii to Seattle was terrible

While the flight itself was pleasant, the process of checking in was difficult. The line was long and our connection time was but two hours. When we finally got to the Hawaiian agent and told him that we were traveling on Alaskan Airlines, he told us we would need to go to a different terminal. I told him that another Hawaiian Airlines agent had directed us to him. I’m looking at our tickets, he noticed that the Alaskan Airlines flight was to be managed by a second party. He ended admonish us for not telling us so Rather than considering that we might’ve been right in the first place.

Plane left an hour late due to flight staffing problems. Only a 45 min flight, but it took 3 hours as a result, which left a lot of people disgruntled. No excuses. No recompense.

The staff are friendly and happy, the check in online was easy and dropping off the bags went well with out problem.

Seats were not bad enough and uncomfortable good legroom in the emergency exit row we were in, but we were forbidden to hold my grandson on my lap for a little while, and the stewardess passed us saying it was against regulations which makes little or no sense when you’re 36,000 feet. The food snacks were really bad. Tasteless tasted like wallpaper, but we’re supposed to be protein bars, and the announcements were all completely incoherent because of the noise of the airplane and the lowness and crackly nature of the PA system.. this was disgraceful. No one in our party could understand a word of what the captain or the flight attendant were saying —not a word! The landing was a little hairy in a pretty stiff crosswind -we bounced before the plane stabilized on the runway

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

Crew was nice, meal was good. Entertainment had to be rebooted 3 times and still did not work. Turns out there was residue on screen, it needed to be cleaned to prevent the touchscreen buttons from continuously activating. I had entertainment for the last 45 minutes of a 5 hour 45 minute flight. Really unacceptable for first class. Flight attendent indicated your cleaning solution creates this problem. Seems as if this is widely known, you should be using a different product or cleaning better. Really really disappointing which simply added to the wi fi on your planes with reliably never ever works.

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

NEVER MADE THE FLIGHT BECAUSE DELTA SAID THEY CAN NOT

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

My flight was canceled after being rescheduled for four days canceling my trip. Kayak and everyone affiliated with it I.e the airlines, and just fly have been excruciating to deal with. My trip to visit family had to be canceled as there was no way to make it. I am furious at all of you.

They delayed our flight because of bad weather in NY which was completely understandable. Then they cancelled our flight and a later flight that evening. The earliest we could fly was the next morning. We ended up buying last minute tickets on another airline and made it home slightly delayed but safely that evening. Delta kept saying it was weather related but if that was the case how did we make it back on another airline? The weather in NY was cloudy but not bad.

The plane smelled like a sewer. Multiple passengers complained. It’s a safety and quality issue to clean these planes.

We were delayed 2 hours leaving STL. I had 20 mins from when we landed in SLC terminal A to make it to SLC terminal B. I had to actually run! thankfully I made my flight but 3/4 legs were delayed to some capacity.

Our flight was great with an unexpected upgrade. However, four days into our travel we are still without a piece of luggage. The bag tracker has not been accurate, the airline is not communicating with me or the luggage delivery service and no one is willing to take responsibility or guarantee any kind of support or reimbursement. Unfortunately, we do not have the option to easily shop to replace items as we are currently on a cruise. I have been very disappointed by United Airlines response.

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

Older aircraft, no meal, only food was for purchase. Not impressed United.

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

Left 2 hours later for delayed I had to take care a kid with special need since people don’t want to move to accommodate the rest of the family. . It wasn’t bad but that made me upset that people can be that selfish.

Everything was great, only problem was that flights were delayed

Onboarding - it would be great to see on the screen what group they were boarding. It was very confusing on who was boarding (even though they called it out) they were not clear and the space to board was strange.

My luggage was not sent with us. Not sure if this is Envoy Air responsibility but that was a very BAD experience

American delayed the flight for a crew rest period. The delay occurred late in the evening - the earliest i can find is 10:20 pm. With a 6 am flight anyone on the flight would have already have been asleep (unless you are insane, a vampire or on drugs) and at least for me i was already on the way to the airport at 445 am the next morning when i discovered they delayed the flight until 9 am. Given the incoming flight was in the air at 6 pm the evening before this should have been figured out a lot more timely that was there only crew to use. Just frustrating given there is no consideration for customer experience anymore in flying.

Good crew and flight was on time. It’s a small plane with limited overhead luggage space. They said the overhead space was full and I had to check my bag. There was still space when I got on. Waiting for my checked luggage added 30 minutes to my trip. Not the end of the world but also not great.

Trip delayed for 2 hours because of rain. We boarded and have to get down the flight and reboard again.

No enough space plus only allowing one laggage instead of two like other airlines.

Qatar airways ,boarding arrangements at Hamid international airport could been better

Two flight changes before the scheduled flight. On the day of the flight, the flight was delayed, which caused the connecting flight to be missed. Then, I was directed to another airport (CUN) and traveled to Tulum. American gave a $12 voucher for lunch. The least expensive item on the menu at a Mexican restaurant was $9.99. Driving to Tulum was a bad auto crash, and traffic was delayed two-plus hours. The bottom line is that we should have been at the hotel at noon, but it ended up at 11:30 PM.

Miami lounges were overcrowded and we were unable to get in. We only had a short time. But the banks are too tight in all American hubs

Overall boarding and debarking is a joke. I dont even bring luggage anymore on trips because you can never allow them to be place then in the overhead bin or you have to pay or you check them which is even worse having to wait for your luggage on the tarmac.

First time flying internationally with AA and probably my last. Not military friendly at all. Didn't allow free checked bag for military family members (dependents) on orders like other airlines. We were charged $100 for baggage weight overage (5 lbs!)even though we had military orders allowing us extra.. Didn’t allow military members to board early. Inefficient and long wait time to board. Seats are smaller and more uncomfortable than other airlines.. no drink service for over 7 hrs of flight! After initial meal was served, the crew never offered a snack or drinks until the breakfast's was served 1 1/2 hrs before landing. Overall expensive and poor experience for the entire flight.

Everything you need to know for your flight from St. Louis to Kailua-Kona

Information on your arrival and departure airports