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Cheap flights from Boston to Bangkok

One-way from $493, found by travellers in the last 7 days. The live price is checked when you book.

Departure
Return
Prices for nearby dates
Sun, Dec 27Any priceMon, Dec 28Any priceTue, Dec 29Any priceWed, Dec 30$493Thu, Dec 31Any priceFri, Jan 1Any priceSat, Jan 2$670Sun, Jan 3Any price

Cheapest one-way tickets

Recent finds on different dates, for 1 adult. Booking opens on Aviasales, which shows baggage, fare rules and the live price.

Cheapest
$493
Hainan Airlines, flight HU 730Found 3 days ago, 1 adult
Check live price
10:55pmBostonWed, Dec 30
Travel time 21h 55m, 1 stopBOSBKK
8:50amBangkokFri, Jan 1
$503
Korean Air, flight KE 092Found 2 days ago, 1 adult
Check live price
11:10amBostonMon, Feb 8
Travel time 21h 45m, 1 stopBOSBKK
8:55pmBangkokTue, Feb 9
$519
Korean Air, flight KE 7840Found 6 days ago, 1 adult
Check live price
12:10pmBostonTue, Mar 16
Travel time 21h 55m, 1 stopBOSBKK
9:05pmBangkokWed, Mar 17
$541
United Airlines, flight UA 7787Found 3 days ago, 1 adult
Check live price
1:24pmBostonSun, Jan 10
Travel time 23h 47m, 2 stopsBOSBKK
1:11amBangkokTue, Jan 12
$557
United Airlines, flight UA 7479Found 2 days ago, 1 adult
Check live price
7:31amBostonMon, Nov 2
Travel time 23h 53m, 2 stopsBOSBKK
7:24pmBangkokTue, Nov 3

Round trips

The cheapest return tickets found recently, price for the whole trip.

Plan the rest of the trip

  • Mobile data in ThailandTravel eSIM from $4, installed before you fly.
    Compare plans
  • Getting from the airportTransfers and car hire in Bangkok, booked ahead at a fixed price.
    See options
  • Things to do in BangkokPopular tours from $13.36 per person.
    See ideas
  • Travel insuranceTravel insurance quotes for Thailand from EKTA; check what each policy covers.
    Get a quote
  • Flight delayed?Delayed or cancelled? See which passenger rights cover this route.
    Check

Lowest fares by month

In the fares found this week, December has the lowest: from $493 one-way, against $583 in April 2027. Pick a month to see its cheapest date.

  1. Octno fares yet
  2. Nov$557
  3. Dec$493
  4. Jan$541
  5. Feb$503
  6. Mar$519
  7. Apr$583
  8. Mayno fares yet
  9. Junno fares yet
  10. Julno fares yet
  11. Augno fares yet
  12. Sepno fares yet
$0$200$400$600OctNov$493DecJanFebMarAprMayJunJulAugSep
Show as a table
MonthCheapest one-wayDateStops
October—
November$557Mon, Nov 22 stops
December$493Wed, Dec 301 stop
January 2027$541Sun, Jan 102 stops
February 2027$503Mon, Feb 81 stop
March 2027$519Tue, Mar 161 stop
April 2027$583Tue, Apr 62 stops
May 2027—
June 2027—
July 2027—
August 2027—
September 2027—

Fares and weather by month

The lowest one-way fare found for each month, next to the weather in Bangkok. Average daily high and low and monthly precipitation.

Oct2026NovDecJan2027FebMarAprMayJunJulAugSep
Lowest fare–$557$493$541$503$519$583–––––
High °C33°33°32°33°34°35°36°35°34°34°33°33°
Low °C25°25°23°23°25°26°27°27°26°26°26°25°
Precipitation mm289451224215193217199190227336

Source: Bangkok on Wikipedia, CC BY-SA 4.0.

Questions travellers ask

What is the cheapest month to fly from Boston to Bangkok?

In the fares found this week, December has the lowest: from $493 one-way, against $583 in April 2027.

What is the weather in Bangkok in December?

In December, the cheapest month to fly, the average daily high in Bangkok is 32 °C and the low 23 °C.

Are there direct flights from Boston to Bangkok?

None of the fares found recently are nonstop. The cheapest options have at least one stop.

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