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Find cheap flights from St. Louis to Thailand from $759

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 Thailand departing on 5/21. 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
0 bags
Fri 6/7
Fri 6/14

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Best Thailand Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Phuket City
Phuket City2 stops$2,091
Chiang Mai
Chiang Mai2 stops$2,049

Good to know

Low season

August

High season

November

Cheapest flight

$759
Best time to beat the crowds but there is an average 18% increase in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from St. Louis to Bangkok

FAQs - booking Thailand flights

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

    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 Thailand.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Thailand 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 Thailand?

    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 Thailand with an airline and back to St. Louis with another airline.

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

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

See more FAQs

Top tips for finding cheap flights to Thailand

  • Morning departure is around 5% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from St. Louis to Thailand

 
Need help choosing which airline to fly with from St. Louis to Thailand? 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.
8.3
Japan AirlinesOverall score based on 1478 reviews
8.7Crew
7.8Entertainment
7.9Food
8.4Boarding
8.2Comfort
Airline reviews

Food as always. PA was not clear, especially the English ones. Very limited Hollywood movies. Unlike the first flight I had, this plane has less leg room and less room for my under seat baggage.

8.0 ExcellentAnonymous, Apr 2024NRT - BKK
Read more about Japan Airlines reviews

Food as always. PA was not clear, especially the English ones. Very limited Hollywood movies. Unlike the first flight I had, this plane has less leg room and less room for my under seat baggage.

I like the braised beef., miso soup,, and green tea. Very little choices of hollywood movies. The PA announcement in English was not very clear and very soft. I could hardly hear.

Please change menu every now & then bc I fly twice within the year and serving the food the same

More updated movies & Chinese movies. The food sometimes overcooked. Prefer to have more neat snacks in between than just choose from the menu. Please change the menu every now and then. This is my second time flying within one year and the menu didn’t change at all!

Food is lagging. Very poor choice. Like vending machine fast food.

Please change the menu more often. The beef is not tender, more choice in ice cream flavor. Dessert is not good too.

Again I paid for an upgrade on my credit card didn’t get it need a refund. . American I not good at gettin in contact for refunds.

I didn’t like the check in process I had to check in at the counter took too much time . Didn’t give the upgrade my seat .

l enjoyed the variety of good and drink choices. The flight attendants were very quick and efficient to our needs.

Truly impressive service in the air. After the main meal, they have a delicious a la carte menu that you can order anytime until 1.5 hrs prior to landing. Flight crew were so pleasant and very efficient. Wish I could fly JAL more often!

West Jet has a horrible boarding process and the seats have no cushion.

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

Big plane, long flight, absolutely no leg room and basically non existent air! I am 5”4’ and always travel Main Cabin, I was miserable on this plane and could barely move when we arrived in Cabo due to the cramped leg area!

The overall flight went well and the aircrew was pleasant.

Cathay Pacific seems to be an airline in trouble and on its way out. Lots of broken or poorly functioning things like entertainment screens, seats, and enough well trained staff to handle a full flight. Sad...

The flight crew was exceptionally good. Personal needs were well met. The food choices were very nice.

Excellent. Planes are a little older and could get some refurbishment, but besides that everything was excellent.

Crew experience was more transnational, seats were so close together (LtoR and FtoB) that it was difficult to enjoy much of anything. When the person in front leaned back, there is no space for me. Sadly it was a flight to be endured not experienced.

While I was in great pain, the seat was sufficiently comfortable to allow me to rest and not be in so much pain.

we were upgraded which was a blessing and tender mercy for us. I fell the day before and was in extreme pain from knee to shoulder. Sitting in a more comfortable seat during the flight was an unexpected blessing and experience.

My seat was sold off to someone else. Had to wait 9 hours to catch the next filght. Definitely will never use Cathay Pacific again. Bad, very bad airline. will comment on google reviews too.

Seats were very comfortable. Crew were excellent. Food very good.

Flight crew was especially thoughtful and attentive, made sure our seats were comfortable so we could rest on the long flight

Operated by American Airlines. Very chaotic and the crew was bit rough responding any enquiries. Restricted leg space.. Qatar would have been better

Qatar airways from Doha to guangzhau was excellent big bird Boeing 777 more room and smoothly flight, I Love it

It was good no problems made it on time for the next flight overseas!

The made us waiting and held our passports and boarding pass making us miss our flights

Not impressed. Only allowed one carry on on such a long flight.

The flight was good but my neighbor had the vent open full power for the whole flight and because the air was blowing from the side instead of from the top and I got very cold and ended up with a sore throat.

Bad experience with the delay n long wait time for connecting flight after missing the connection flight from Doha.

Wore experience due to delay and took me 3 days to reach my destination.

All over with Qatar airlines my experience was really bad due to delays and then putting me on different airlines and after 8 hours of wait I had to listen to their is no plane to fly for another 24 hours. Wore experience ever.

Excellent will be flying again in May with Qatar. to Botswana.

Even though we left CMI late, we mostly made up the time.

Delayed almost 4 hours for a 45 minute flight with no explanation.

Again, multiple delays and I eventually just canceled and drove!

Great crew. Very comfortable business seats with nice bedding. Good food. We were delayed to let late passengers on the flight, but otherwise great experience.

Great crew. We were delayed so that late passengers could get on the flight. Love the bedding in business class. Good food. Great experience.

The CX617 from HK to BKK was delayed more than 1.5 hours.

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

I was in business class. There was an excellent headset. But half an hour before arrival they collected them! The rest of the trip I had to use a cheap earphone. There must be a better way to protect the headphones.

All four American Airlines flights I took in last seven days were delayed. Caused me loads of problems, missed meetings, loss of time and money.

American cancelled our flight home. Zero option for hotel, alternative transportation and took 3 hours to find our bags so we could take a 3 hour UBER ride home on our dime. Never flying AA again.

Book cheap flights from St. Louis to Thailand

Recent round-trip flight deals

9/11Wed
2 stops
32h 36mSTL-BKK
9/25Wed
2 stops
32h 48mBKK-STL
$1,202
9/8Sun
2 stops
27h 34mSTL-BKK
9/15Sun
2 stops
32h 48mBKK-STL
$1,242
9/10Tue
2 stops
36h 30mSTL-BKK
9/18Wed
2 stops
34h 10mBKK-STL
$1,276
8/10Sat
2 stops
28h 03mSTL-BKK
9/14Sat
2 stops
32h 48mBKK-STL
$1,283
9/10Tue
2 stopsCathay Pacific
35h 00mSTL-BKK
9/26Thu
2 stopsCathay Pacific
25h 28mBKK-STL
$1,303
9/11Wed
2 stopsCathay Pacific
29h 25mSTL-BKK
9/24Tue
2 stopsCathay Pacific
25h 28mBKK-STL
$1,344
9/11Wed
2 stopsQatar Airways
28h 49mSTL-BKK
9/24Tue
2 stopsQatar Airways
27h 58mBKK-STL
$1,361
10/2Wed
2 stopsQatar Airways
28h 49mSTL-BKK
10/19Sat
2 stopsQatar Airways
31h 05mBKK-STL
$1,385
7/2Tue
2 stopsDelta
40h 50mSTL-HKT
8/1Thu
2 stopsDelta
32h 56mHKT-STL
$3,044
10/2Wed
2 stopsJapan Airlines
43h 55mSTL-BKK
10/19Sat
2 stopsJapan Airlines
51h 15mBKK-STL
$3,103

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Recent one-way flight deals

5/21Tue
2 stops
29h 15mSTL-BKK
$759
5/25Sat
2 stops
29h 25mSTL-BKK
$799
6/29Sat
2 stopsTurkish Airlines
24h 35mSTL-BKK
$851
5/24Fri
2 stopsTurkish Airlines
45h 17mSTL-BKK
$868
5/27Mon
3 stops
43h 30mSTL-BKK
$896
5/21Tue
3 stops
56h 13mSTL-BKK
$915
5/22Wed
3 stops
41h 34mSTL-BKK
$954
5/27Mon
2 stopsQatar Airways
42h 10mSTL-BKK
$1,029
5/23Thu
2 stopsFinnair
28h 24mSTL-BKK
$1,296
6/24Mon
2 stopsANA
34h 05mSTL-BKK
$3,545

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Last minute flights from St. Louis to Thailand

Last minute flight, train and bus deals

5/10Fri
multi-stop
38h 25mSTL-BKK
10/30Wed
multi-stop
47h 53mBKK-STL
$6,862
5/10Fri
multi-stop
33h 05mSTL-BKK
10/31Thu
multi-stop
47h 26mBKK-STL
$8,363
5/10Fri
multi-stop
33h 05mSTL-BKK
10/30Wed
multi-stop
29h 57mBKK-STL
$9,260
5/10Fri
multi-stopUnited Airlines
29h 25mSTL-BKK
10/31Thu
multi-stopUnited Airlines
45h 25mBKK-STL
$10,038

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St. Louis - Thailand Flights

Departure:

St. Louis (STL)United States

Return flight deals:

Thailand - St. Louis

Cabin classes: