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Find cheap flights from St. Louis to Thailand from $641

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 11/4. 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
mar. 7/9
mar. 7/16

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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$1,954
Chiang Mai
Chiang Mai2 stops$2,518

Good to know

Low season

August

High season

November

Cheapest flight

$641
Best time to beat the crowds but there is an average 18% increase in price.
Most popular time to fly and prices are also 9% 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 26% 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.
8.0
DeltaOverall score based on 10310 reviews
8.0Entertainment
7.4Food
7.9Comfort
8.6Crew
8.2Boarding
Airline reviews

3 hours late and all they have is was a $12 meal voucher. That’s not even enough to cover fast food.

2.0 MediocreCraig, Jun 2024CVG - LGA
Read more about Delta reviews

3 hours late and all they have is was a $12 meal voucher. That’s not even enough to cover fast food.

Among the poorest flights I’ve had with Delta in a while. Entertainment system failed completely on a 7.5 hr flight. Crew seemed distracted and not the normal friendly crew. Flight overbooked it seemed… very crowded.

If I can, I always fly Delta. I’ve found their service to always be reliable and pleasant.

You could have not cancelled the flight (AA, which I will be flying from now on) left for BOS despite the fictitious weather issues (that no one in my Boston family could see). You could have rebooked my direct flight to another direct flight instead of sending me though JFK, the worst US airport after O’Hara You could have rebooked me on a Main Cabin seat (like the one I paid for in my original ticket instead of putting me a the last row on JFK->BOS leg, pocketing the difference in ticket price But I do not really care whether you will ever do that in a future because in a future neither I nor anyone from my company (unless they pay out of pocket) nor an of my clients and partners (if they heed my advice) will ever be caught dead on any of Delta flights

Really bad baggage handling. Had my Rimowa bag badly damaged at the latches.

It was pretty good I was worried with the short Layover that I might not catch my connection but the gate was there

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Friendly flight attendants. Comfort plus seats were very comfortable and had lots of leg room. 10A and 10 B.

I've flown many many times on Northwest and then Delta. The crew on this flight were absolutely the best I've had the pleasure of being looked after by.

Great, the flight attendants were very friendly and the food was also good.

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.

Not great. Flight attendants were aloof, food was mediocre, seats that I paid $150 were given to someone else without any concession. I will probably never use kayak again. Terrible experience from start to finish.

All good- I love BA and the professionalism of the crew and pilots.

Great flight- smooth, nice crew, nice clean aircraft, departed a little late but arrived 10 early.

It was listed on my ticket as Finnair but there was no indication that the flight was Finnair. In fact the number was even different. There were no employees there until exactly 2 hours before so we had to wait in line at Iberia and hope

Sorting on line would have been appreciated Onward information on flights missed No ability to get seating arranged before we got to gate Very unfriendly at gate

The flight was Finnair but there was no indications anywhere that the checkin was for Finnair also. There was no one to ask. I think at a minimum they should list the code shares so people don’t stand in the wrong line for an hour.

I booked the flight with Finnair, which made the arrangements for downloading a boarding pass unnecessarily complicated. I wouldn't do that again. Instead I'd book direct with AA.

Flight ok, but me and other two passengers didn’t have connection with the entertainment in our seats. So, no movies, no games, no music… for 9 hours. The crew just told us that there’s nothing they can do but I noticed during the flight that there were empty seats, so they could have offered to us to change seats. Customer service could be better.

Had a nice flight to London on BA will fly with them again in the future

Finnair cancelled my flight 12 hours prior to leaving for Helsinki. They stated there were mechanical problems. I had to scurry around to find a new flight that would meet my needs for arrival in Helsinki. Luckily I was able to find alternate transportation through Lufthansa/United.

Staff was very friendly. There is no on board entertainment, but it’s such a short flight that it doesn’t matter. We also got a meal which was nice and unexpected due to the length of the flight.

Flight was fine overall. What you would expect from economy seats. I did appreciate the amenities (eyemask, earplugs, small toothbrush and toothpaste, thin socks).

Besides the flight cancellation, everything else was prefect. Kudos to Malaysian Airlines.

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.

This is by far the worst experience I have had with American Airlines. The start of this trip was a complete disaster. I purposely planned my trip so that I would weather any delays so that I could make very important meeting at the Pentagon. My flight was cancelled because of maintenance and I was put on the first flight the next day but I was late to the meeting. After a long week at the Pentagon I just wanted to go home and my flight home which was early in the day was delayed. Eventually the flight was delayed until the next day. I was not authorized a hotel room because DCA was my point of origin. So I paid for a hotel out of pocket. The flight this morning was boarded then deplaned because the aircraft was hot. The flow of information was not happening in DCA and made it worse when the news was bad. I am going to take a break from American for my next few military flights. Hopefully whatever has been going on with American Airlines will be resolved.

We had a 2 hour delay. The seats were smaller than most other airlines. The person in front of us wanted to lay back and we had to stop her because she was pressing against my girlfriend’s legs. We had to ask her to sit up and not lay back due to the lack of room.

Information when booking said the flight would be with American Airlines but the flight was actualy with British Airways. Check in from Orlando was nice and quick. I agreed to put my cabin case in the checked luggage as it was a full flight. Case came back damaged (unable to put the handle down) so will have to dispose of it. Seats were quite cramped with very little leg room, even for economy. This was the experience of both the outgoing and return flight. Cabin crew were ok and flight time was punctual.

Everything was fine once we actually got on our flight. It was more then annoying they canceled (delayed) our flight. We lost out on a day of our trip along with money on our stay. Plus we had to book another hotel. So expensive.

This flight was canceled and delayed several times without explanation. The plane was freezing cold and no wifi for messaging. Getting off the plane was terribly unorganized and felt like it took forever….

The flight was delayed several times without explanation. The seats were terribly uncomfortable and wifi isn’t included. All these make for a less than ideal flight.

The flights was delayed by hours and it was the firmest landing I have experienced in my life. My back is still sore.

Internet service was erratic. Crew service was poor and slow. My luggage on this non-stop flight was lost and not recovered

Terrible. I didn’t fly and I had an important meeting the next day.

Missed this flight due to the first AA flight delay

Book cheap flights from St. Louis to Thailand

Recent round-trip flight deals

11/13mié.
2 stopsDelta
26h 00mSTL-BKK
11/19mar.
2 stopsDelta
26h 55mBKK-STL
$1,150
9/10mar.
2 stopsAmerican Airlines
34h 20mSTL-BKK
9/26jue.
2 stopsAmerican Airlines
27h 03mBKK-STL
$1,156
11/13mié.
2 stopsDelta
26h 00mSTL-BKK
11/16sáb.
2 stopsDelta
26h 55mBKK-STL
$1,190
9/2lun.
2 stopsAmerican Airlines
33h 46mSTL-BKK
9/21sáb.
2 stopsAmerican Airlines
27h 03mBKK-STL
$1,196
10/8mar.
2 stopsQatar Airways
35h 10mSTL-BKK
10/13dom.
2 stopsQatar Airways
29h 37mBKK-STL
$1,368
7/3mié.
2 stopsFinnair
47h 17mSTL-BKK
7/8lun.
2 stopsFinnair
47h 25mBKK-STL
$1,729
7/2mar.
2 stopsFinnair
34h 25mSTL-BKK
7/13sáb.
2 stopsFinnair
47h 25mBKK-STL
$1,814
11/23sáb.
2 stopsQatar Airways
26h 59mSTL-BKK
11/29vie.
2 stopsQatar Airways
32h 21mBKK-STL
$1,819
6/24lun.
2 stopsCathay Pacific
41h 42mSTL-BKK
6/29sáb.
2 stopsCathay Pacific
41h 28mBKK-STL
$2,339
6/21vie.
2 stopsCathay Pacific
47h 01mSTL-HKT
6/28vie.
2 stopsCathay Pacific
40h 28mHKT-STL
$23,160

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Recent one-way flight deals

11/4lun.
2 stopsUnited Airlines
28h 50mSTL-BKK
$641
11/3dom.
2 stopsUnited Airlines
28h 50mSTL-BKK
$681
11/3dom.
2 stopsANA
29h 00mSTL-BKK
$693
7/9mar.
3 stops
55h 36mSTL-BKK
$723
7/9mar.
2 stops
28h 00mSTL-BKK
$728
11/3dom.
1 stop
33h 00mSTL-BKK
$7,055

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Last minute flights from St. Louis to Thailand

Last minute flight, train and bus deals

6/13jue.
multi-stopQatar Airways
36h 34mSTL-BKK
6/17lun.
multi-stopQatar Airways
60h 02mBKK-STL
$1,733
6/13jue.
multi-stopQatar Airways
36h 34mSTL-BKK
6/16dom.
multi-stopQatar Airways
42h 38mBKK-STL
$1,791
6/13jue.
multi-stopRoyal Jordanian
36h 39mSTL-BKK
6/20jue.
multi-stopRoyal Jordanian
51h 56mBKK-STL
$1,907
6/13jue.
multi-stop
31h 00mSTL-BKK
6/20jue.
multi-stop
31h 16mBKK-STL
$2,068
6/13jue.
multi-stopQatar Airways
44h 20mSTL-BKK
6/19mié.
multi-stopQatar Airways
42h 37mBKK-STL
$2,102
6/13jue.
multi-stop
36h 34mSTL-BKK
6/20jue.
multi-stop
32h 46mBKK-STL
$2,184
6/12mié.
multi-stop
29h 30mSTL-BKK
6/14vie.
multi-stop
25h 30mBKK-STL
$2,269
6/13jue.
multi-stop
31h 45mSTL-BKK
6/17lun.
multi-stop
25h 30mBKK-STL
$2,293
6/12mié.
multi-stopKLM
30h 07mSTL-BKK
6/14vie.
multi-stopKLM
40h 30mBKK-STL
$2,355
6/11mar.
multi-stop
45h 09mSTL-CNX
6/18mar.
multi-stop
34h 40mCNX-STL
$2,917

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St. Louis - Thailand Flights

Departure:

St. Louis (STL)United States

Return flight deals:

Thailand - St. Louis

Cabin classes: