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STL - BKK

$627 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 9/17. 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
Wed 6/5
Wed 6/12

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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 42,830,901 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
2:25 pm - 11:15 amSTL-BKK
32h 50m2 stops
4:45 pm - 1:28 pmBKK-STL
32h 43m2 stops
$1,273
Find Deal
Tue, Oct 1 - Sat, Oct 12
7:31 pm - 11:15 amSTL-BKK
27h 44m2 stops
3:10 pm - 1:28 pmBKK-STL
34h 18m2 stops
$1,313
Find Deal
Mon, Sep 30 - Mon, Oct 14
10:30 am - 6:10 amSTL-BKK
31h 40m2 stops
10:05 am - 9:15 amBKK-STL
60h 10m2 stops
$1,350Qatar Airways
Find Deal
Tue, Oct 29 - Mon, Nov 11
7:00 am - 6:10 amSTL-BKK
35h 10m2 stops
2:30 am - 11:58 pmBKK-STL
33h 28m2 stops
$1,374Qatar Airways
Find Deal
Tue, Oct 1 - Fri, Oct 11
6:29 am - 11:50 pmSTL-BKK
29h 21m2 stops
11:00 am - 11:07 pmBKK-STL
24h 07m2 stops
$2,050Cathay Pacific
Find Deal
Sun, Jul 21 - Thu, Jul 25
6:29 am - 11:30 amSTL-BKK
41h 01m2 stops
7:00 pm - 11:07 pmBKK-STL
40h 07m2 stops
$2,176Cathay Pacific
Find Deal
Fri, Jul 12 - Fri, Jul 26
7:01 am - 5:50 amSTL-BKK
34h 49m2 stops
12:25 am - 10:58 pmBKK-STL
34h 33m2 stops
$5,805Japan Airlines
Find Deal
Mon, Jun 3 - Sun, Jun 9
9:50 am - 5:50 amSTL-BKK
32h 00m2 stops
8:05 am - 10:24 pmBKK-STL
26h 19m3 stops
$6,412American Airlines
Find Deal
Mon, Sep 30 - Mon, Oct 14
5:21 am - 11:00 pmSTL-BKK
29h 39m2 stops
8:05 am - 10:02 pmBKK-STL
25h 57m3 stops
$6,484American Airlines
Find Deal
Tue, Jun 4 - Mon, Jul 1
6:29 am - 5:50 amSTL-BKK
35h 21m2 stops
12:25 am - 10:42 pmBKK-STL
34h 17m2 stops
$6,560Japan Airlines
Find Deal
Sat, Aug 3 - Sat, Aug 10

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, Thursday 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 $2,160 and $2,089 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 63 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 $1,350 on Qatar Airways, followed by Finnair ($1,590). One-way flight deals have also been found from as low as $627 on Cathay Pacific and from $1,072 on United Airlines.

Good to know

Low season

August

High season

November

Cheapest flight

$627
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly with an average 7% 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 $627 for a one-way ticket and $1,273 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 $2,267 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 $1,977 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.
8.3
Japan AirlinesOverall score based on 1482 reviews
8.2Comfort
8.4Boarding
7.8Entertainment
7.9Food
8.7Crew
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!

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!

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

The pilots were good. Disappointing when planes don't have electrical ports

I liked the piloting of the aircraft. Very disappointed about lack of electrical ports. Also, although a short flight. there was enough time to hand out snacks to comfort + seats as was done for first class.

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

One of the worst flight in business class by qatar airways and I’m no stranger with qatar airways businesses class, I travelled with the extensively in the past 12 years

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.

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.

They gave my seat away although it was a connecting flight with them and the flight was a bit delayed.

Flight was cancelled had to move to another gate late again no internet paid for the month and never can use it waste of money

Not being able to purchase my check in baggage online was a negative.

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.
9/17Tue
2 stopsCathay Pacific
28h 20mSTL-BKK
$627
9/8Sun
2 stops
28h 29mSTL-BKK
$636
9/13Fri
2 stops
33h 09mSTL-BKK
$639
9/10Tue
2 stops
35h 00mSTL-BKK
$652
9/16Mon
2 stopsCathay Pacific
28h 30mSTL-BKK
$663
10/3Thu
3 stopsUnited Airlines
34h 20mSTL-BKK
$1,072
9/9Mon
3 stopsUnited Airlines
42h 35mSTL-BKK
$1,082
6/5Wed
2 stopsTurkish Airlines
34h 00mSTL-BKK
$1,167
6/7Fri
2 stopsTurkish Airlines
34h 00mSTL-BKK
$1,207
6/3Mon
2 stopsFinnair
30h 16mSTL-BKK
$1,295

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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.
5/9Thu
multi-stop
29h 36mSTL-BKK
5/11Sat
multi-stop
31h 03mBKK-STL
$1,546
5/9Thu
multi-stop
28h 10mSTL-BKK
5/10Fri
multi-stop
33h 59mBKK-STL
$2,853
5/9Thu
multi-stop
26h 10mSTL-BKK
5/11Sat
multi-stop
30h 13mBKK-STL
$3,737
5/9Thu
multi-stop
36h 35mSTL-BKK
5/11Sat
multi-stop
25h 45mBKK-STL
$3,917

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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: