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STL - BKK

$612 Find cheap flights from St. Louis to Bangkok

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 Bangkok departing on 7/12. 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
Sat 6/29
Sat 7/6

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Bangkok.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Bangkok.
In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

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Cheap flight deals from St. Louis to Bangkok (STL-BKK)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Bangkok 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 and deals for you by selecting your travel dates.
Choose your dates
7:30 am - 5:50 amSTL-BKK
34h 20m2 stops
8:05 am - 11:00 pmBKK-STL
26h 55m2 stops
$1,156American Airlines
Find Deal
Tue, Sep 10 - Thu, Sep 26
6:15 am - 12:05 amSTL-BKK
29h 50m2 stops
7:10 am - 4:26 pmBKK-STL
22h 16m2 stops
$1,158United Airlines
Find Deal
Tue, Oct 29 - Mon, Nov 11
6:00 am - 11:20 pmSTL-BKK
28h 20m2 stops
9:30 pm - 3:56 pmBKK-STL
31h 26m2 stops
$1,340Delta
Find Deal
Thu, Nov 21 - Sat, Nov 30
6:00 am - 11:20 pmSTL-BKK
28h 20m2 stops
1:00 am - 8:39 pmBKK-STL
32h 39m2 stops
$1,380Delta
Find Deal
Fri, Nov 8 - Sat, Nov 16
7:00 am - 7:05 amSTL-BKK
36h 05m2 stops
2:30 am - 9:35 pmBKK-STL
31h 05m2 stops
$1,404Qatar Airways
Find Deal
Sun, Oct 6 - Wed, Oct 16
6:30 pm - 1:10 pmSTL-BKK
30h 40m2 stops
2:30 am - 9:35 pmBKK-STL
31h 05m2 stops
$1,420Qatar Airways
Find Deal
Sun, Sep 22 - Fri, Oct 11
6:08 pm - 5:25 amSTL-BKK
47h 17m2 stops
7:15 am - 6:40 pmBKK-STL
47h 25m2 stops
$1,594Finnair
Find Deal
Wed, Jul 3 - Mon, Jul 8
12:06 pm - 11:50 pmSTL-BKK
23h 44m2 stops
4:55 pm - 11:00 pmBKK-STL
43h 05m2 stops
$2,419Cathay Pacific
Find Deal
Tue, Oct 29 - Sun, Nov 17
12:06 pm - 4:40 pmSTL-BKK
40h 34m2 stops
8:20 am - 11:00 pmBKK-STL
27h 40m2 stops
$2,490Cathay Pacific
Find Deal
Tue, Oct 29 - Sat, Nov 23
12:48 pm - 5:25 amSTL-BKK
28h 37m2 stops
7:15 am - 6:30 pmBKK-STL
47h 15m2 stops
$4,618Finnair
Find Deal
Tue, Aug 27 - Wed, Sep 4

Flights from St. Louis to Bangkok - Travel Insights & Trends

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

What’s the cheapest day of the week to fly from St. Louis to Bangkok?

The average price of all flights from St. Louis to Bangkok Suvarnabhumi Airport clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from St. Louis to Bangkok, look for departures on Mondays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Bangkok, Tuesday is the cheapest day to fly and Friday is the most expensive.

What is the cheapest month to fly from St. Louis to Bangkok Suvarnabhumi Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from St. Louis to Bangkok Suvarnabhumi Airport, 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 Bangkok Suvarnabhumi Airport is October, where tickets cost $1,380 on average. On the other hand, the most expensive months are December and July, where the average cost of tickets is $2,150 and $2,080 respectively.

How far in advance should I book a flight from St. Louis to Bangkok Suvarnabhumi Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from St. Louis to Bangkok Suvarnabhumi Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from St. Louis to Bangkok Suvarnabhumi Airport, you should book around 1 day before departure. For the absolute cheapest price, our data suggests you should book 80 days before departure.

Which airlines provide the cheapest flights from St. Louis to Bangkok?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from St. Louis to Bangkok found by KAYAK users in the last 72 hours was for $1,156 on American Airlines, followed by United Airlines ($1,158). One-way flight deals have also been found from as low as $637 on Japan Airlines and from $639 on American Airlines.

Good to know

Low season

August

High season

November

Cheapest flight

$612
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly with an average 4% increase in price.
Flight from St. Louis to Bangkok

When to book flights from St. Louis to Bangkok

Are your dates flexible? Find out the best times to travel from St. Louis to Bangkok 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 St. Louis to Bangkok flights

  • What is the cheapest flight from St. Louis to Bangkok Suvarnabhumi Airport?

    In the last 3 days, the lowest price for a flight from St. Louis to Bangkok Suvarnabhumi Airport was $612 for a one-way ticket and $1,156 for a round-trip.

  • Do I need a passport to fly between St. Louis and Bangkok?

    A passport is required to fly from St. Louis to Bangkok.

  • Which airports will I be using when flying from St. Louis to Bangkok?

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Bangkok, also known as Bangkok Suvarnabhumi.

  • Which aircraft models fly most regularly from St. Louis to Bangkok?

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

  • Which airline alliances offer flights from St. Louis to Bangkok?

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

  • What is the most popular layover when flying to Bangkok from St. Louis?

    Doha is the most popular layover city among KAYAK users traveling from St. Louis to Bangkok.

  • Which is the best airline for flights from St. Louis to Bangkok, ANA or Japan Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Bangkok are ANA and Japan Airlines. With an average price for the route of $2,181 and an overall rating of 8.4, ANA is the most popular choice. Japan Airlines is also a great choice for the route, with an average price of $2,002 and an overall rating of 8.3.

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

    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 Bangkok.

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

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

    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 Bangkok with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and BKK 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 Bangkok?

    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 Bangkok 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 5 airlines serving from St. Louis to Bangkok

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Bangkok. 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 Bangkok? 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 10457 reviews
7.9Comfort
8.6Crew
8.2Boarding
8.0Entertainment
7.4Food
Airline reviews

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.

10.0 ExcellentAnonymous, May 2024MSP - YVR
Read more about Delta reviews

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.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Awful. Flight was continuously getting delayed and gates kept changing without any reason. Flight was delayed for more then 3 hours

Paid premium for Delta only to be on safe but tired old 767 with ancient cabin in mediocre condition. Poor wifi and horrible inflight entertainment. Hardly a premium experience. Should have flown SW and had fun flight crew and no pretense

Our flight to Zurich was delayed by almost 3 hours, so we missed our next flight. There was no indication it would be delayed this much. We were told the gate had changed and then it apparently took over 2 hours to load the "catering" on the plane. We were not compensated in any way for the trouble.

Rated entertainment as Mediocre as there were major problems with the Infotainment system that took probably a half hour for them to fix.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

Half the bathrooms assigned to economy were out of action

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

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.

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

The wine was low quality Finnair label stuff in small bottles and only one small bottle each. Embarassinng. A competing airline served me two generous glasses of a nice South African Shiraz from regular wine bottles, a Beck's beer, and a generous Dewar's White Label on the rocks. Cabin service was good and polite, plane interior was beautiful, but cramped.

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.

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.

I’m very disappointed, to fly into an airplane for 10 straight hours, and not having a TV even though when I put the ticket I was told that I will have entertainment for the TV. Very disappointed.

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.

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.

28 hour delay at Fort Worth/Dallas airport, part due to weather which was unavoidable, but various other reasons - no pilot, no fa, mechanical problem, plane too small, too big, crew out of flying time, seat configuration problems.... endless and hourly updates with a different excuse. Finally told us about 3.00 am, that the flight was delayed to hours later.

Experience was bad. 3.5 hour delay for a 2.5 hour trip. There was no r Transparency about the reason for the delay and it was done 30 mins at a time.

Original flight delayed several times and finally canceled at 2:30 in the morning. Staff at the gate was not very helpful in resolving problems or communicating why there were delays. I spent 34 hours at the airport before I could leave, they couldn't book me on another early flight even after canceling my original flight. Next flight available after my original flight was canceled was 22 hours later. I will never fly American Airlines again.

very very tight seats unfriendly crew who do not seem to care about the comfort of their passengers and do not know how to smile poor ground staff support at LHR and PHX

The boarding process and flight were great. However, I waited about 40 minutes for my luggage. It did not come up on the designated belt. Instead, everyone’s bags were on a cart. Not sure what the issue was, but we were not informed until another passenger went looking for her bags and found them.

There were delays on both ends. It made it less than excellent. This plane was great though

AA1537 the AC was not working properly. It was very hot and uncomfortable.

So uncomfortable to sit in the tiny space on a long, international. Food was rough. Please, less white flour and processed food.

Worst experience flying American Airlines. I fly with them often, so I was super disappointed in the service I received at gate 30 in LGA on May 24, mid-day. The flight was delayed twice. I was patiently waiting in the American Airlines lounge when I received the notice on my app that the plane was boarding 45 minutes before its newly re-scheduled take off of 4 pm (from the orginal 1:45 pm then 3:00 pm). It took me 5 min to travel from the lounge to the gate and when I arrived there at 3:20 flight gate attendant told me the flight had closed and that they announced for passengers multiple times. I showed them the notification on my app and they were really rude and unempathetic. The person who rescheduled my flight at customer service wasn't any happier but was at least helpful in getting me on the next flight.

Flight was 1/2 hour delayed leaving Phoenix. Otherwise it was an average flight. Flight crew on this trip was very nice.

Book cheap flights from St. Louis to Bangkok

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Bangkok found on KAYAK in the last 72 hours.
7/12Fri
3 stops
58h 03mSTL-BKK
$612
11/4Mon
2 stopsJapan Airlines
32h 35mSTL-BKK
$637
7/25Thu
2 stopsAmerican Airlines
32h 03mSTL-BKK
$639
7/11Thu
2 stopsAmerican Airlines
32h 03mSTL-BKK
$644
7/8Mon
2 stopsJapan Airlines
34h 11mSTL-BKK
$649
10/6Sun
2 stopsUnited Airlines
49h 00mSTL-BKK
$650
11/3Sun
2 stopsUnited Airlines
42h 11mSTL-BKK
$653
7/9Tue
2 stopsJapan Airlines
28h 00mSTL-BKK
$654
7/14Sun
3 stops
45h 59mSTL-BKK
$677
11/3Sun
2 stopsJapan Airlines
27h 35mSTL-BKK
$679

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Last minute flights from St. Louis to Bangkok

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from St. Louis to Bangkok that are departing in the next 10 days.
5/31Fri
multi-stop
34h 00mSTL-BKK
6/2Sun
multi-stop
33h 34mBKK-STL
$2,127
5/31Fri
multi-stopQatar Airways
35h 10mSTL-BKK
6/2Sun
multi-stopQatar Airways
60h 05mBKK-STL
$2,203
5/31Fri
multi-stop
28h 55mSTL-BKK
6/2Sun
multi-stop
33h 34mBKK-STL
$2,227
5/31Fri
multi-stop
28h 10mSTL-BKK
6/1Sat
multi-stop
34h 49mBKK-STL
$3,287
5/31Fri
multi-stop
28h 10mSTL-BKK
6/1Sat
multi-stop
50h 25mBKK-STL
$4,623
6/3Mon
multi-stopTurkish Airlines
40h 35mSTL-BKK
6/14Fri
multi-stopTurkish Airlines
48h 02mBKK-STL
$6,968
6/3Mon
multi-stop
38h 40mSTL-BKK
6/13Thu
multi-stop
52h 31mBKK-STL
$8,707
6/4Tue
multi-stop
27h 09mSTL-BKK
6/5Wed
multi-stop
25h 38mBKK-STL
$14,676
6/3Mon
multi-stop
25h 40mSTL-BKK
6/13Thu
multi-stop
30h 07mBKK-STL
$16,010

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St. Louis - Bangkok Flights

Departure:

St. Louis (STL)United States

Destination:

Bangkok (BKK)Thailand

Return flight deals:

Bangkok - St. Louis

Cabin classes: