Cathay Pacific Boston to Bangkok Flights

Return flight: Bangkok – Boston

Cheapflightsplus.com will find cheap Cathay Pacific flights from Boston to Bangkok. Compare airline ticket prices and book air tickets starting from $629 from trusted online travel agencies, web sites and directly from airlines. Check flights schedule of Cathay Pacific, arrivals and departure details below.

Find Cheap Airfare Boston (MA) — Bangkok by Cathay Pacific

To find cheap tickets choose a day of your departure with attractive price on the graph below and click «Find flights». For round trip flights please click «Check prices for return flight». The cheapest airfare is in march: one-way - $629, two-way – $1079.
Direct flights
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Below is a detailed 2025 flight schedule for today, tomorrow and all other days. It may vary depending on season and a day of the week of your desired trip. We recommend booking your itinerary at least 2 weeks prior your travel to get the best price and availability by the airline.
Departure Arrival Flight Details Flight Time Price
0:30 am — 0:10 am
+2 days
0:30 am — 5:10 am CX811 Cathay Pacific
Boston — Hong Kong
17h stop
10:10 pm — 0:10 am CX617 Cathay Pacific
Hong Kong — Bangkok
35h 40m
including layover
Find flight
from$629
0:30 am — 10:35 pm
+1 day
0:30 am — 5:10 am CX811 Cathay Pacific
Boston — Hong Kong
15h 15m stop
8:25 pm — 10:35 pm CX757 Cathay Pacific
Hong Kong — Bangkok
34h 5m
including layover
Find flight
from$629
0:30 am — 4:40 pm
+1 day
0:30 am — 5:10 am CX811 Cathay Pacific
Boston — Hong Kong
9h 20m stop
2:30 pm — 4:40 pm CX751 Cathay Pacific
Hong Kong — Bangkok
28h 10m
including layover
Find flight
from$629
0:30 am — 5:45 pm
+1 day
0:30 am — 5:10 am CX811 Cathay Pacific
Boston — Hong Kong
10h 30m stop
3:40 pm — 5:45 pm CX5792 Cathay Pacific
Hong Kong — Bangkok
29h 15m
including layover
Find flight
from$629
0:30 am — 6:15 pm
+1 day
0:30 am — 5:10 am CX811 Cathay Pacific
Boston — Hong Kong
10h 55m stop
4:05 pm — 6:15 pm CX701 Cathay Pacific
Hong Kong — Bangkok
29h 45m
including layover
Find flight
from$629
0:30 am — 2:05 pm
+1 day
0:30 am — 5:10 am CX811 Cathay Pacific
Boston — Hong Kong
6h 50m stop
12:00 pm — 2:05 pm CX653 Cathay Pacific
Hong Kong — Bangkok
25h 35m
including layover
Find flight
from$629
0:30 am — 11:15 am
+1 day
0:30 am — 5:10 am CX811 Cathay Pacific
Boston — Hong Kong
4h stop
9:10 am — 11:15 am CX619 Cathay Pacific
Hong Kong — Bangkok
22h 45m
including layover
Find flight
from$629
0:30 am — 9:45 am
+1 day
0:30 am — 5:10 am CX811 Cathay Pacific
Boston — Hong Kong
2h 30m stop
7:40 am — 9:45 am CX5794 Cathay Pacific
Hong Kong — Bangkok
21h 15m
including layover
Find flight
from$629
0:30 am — 12:05 pm
+1 day
0:30 am — 5:10 am CX811 Cathay Pacific
Boston — Hong Kong
4h 45m stop
9:55 am — 12:05 pm CX615 Cathay Pacific
Hong Kong — Bangkok
23h 35m
including layover
Find flight
from$629
0:30 am — 10:40 am
+1 day
0:30 am — 5:10 am CX811 Cathay Pacific
Boston — Hong Kong
3h 20m stop
8:30 am — 10:40 am CX705 Cathay Pacific
Hong Kong — Bangkok
22h 10m
including layover
Find flight
from$629
0:30 am — 5:15 pm
+1 day
0:30 am — 5:10 am CX811 Cathay Pacific
Boston — Hong Kong
3h 15m stop
8:25 am — 12:30 pm CX723 Cathay Pacific
Hong Kong — Kuala Lumpur
3h 35m stop
4:05 pm — 5:15 pm AK886 AirAsia
Kuala Lumpur — Bangkok
28h 45m
including layover
Find flight
from$810
0:30 am — 1:10 pm
+1 day
0:30 am — 5:10 am CX811 Cathay Pacific
Boston — Hong Kong
3h 30m stop
8:40 am — 10:25 am CX607 Cathay Pacific
Hong Kong — Phnom Penh
1h 30m stop
11:55 am — 1:10 pm ZA674 Interavia Airlines
Phnom Penh — Bangkok
24h 40m
including layover
Find flight
from$823
0:30 am — 6:20 pm
+1 day
0:30 am — 5:10 am CX811 Cathay Pacific
Boston — Hong Kong
3h 15m stop
8:25 am — 12:30 pm CX723 Cathay Pacific
Hong Kong — Kuala Lumpur
4h 35m stop
5:05 pm — 6:20 pm AK892 AirAsia
Kuala Lumpur — Bangkok
29h 50m
including layover
Find flight
from$833
0:30 am — 9:05 pm
+1 day
0:30 am — 5:10 am CX811 Cathay Pacific
Boston — Hong Kong
3h 15m stop
8:25 am — 12:30 pm CX723 Cathay Pacific
Hong Kong — Kuala Lumpur
7h 25m stop
7:55 pm — 9:05 pm AK896 AirAsia
Kuala Lumpur — Bangkok
32h 35m
including layover
Find flight
from$833
0:30 am — 1:55 pm
+1 day
0:30 am — 5:10 am CX811 Cathay Pacific
Boston — Hong Kong
1h 50m stop
7:00 am — 8:40 am CX498 Cathay Pacific
Hong Kong — Taipei
2h 15m stop
10:55 am — 1:55 pm SL399 Thai Lion Air
Taipei — Bangkok
25h 25m
including layover
Find flight
from$912
0:30 am — 9:55 am
+1 day
0:30 am — 5:10 am CX811 Cathay Pacific
Boston — Hong Kong
2h 40m stop
7:50 am — 9:55 am UO704 Hong Kong Express Airways
Hong Kong — Bangkok
21h 25m
including layover
Find flight
from$1123
0:30 am — 9:40 am
+1 day
0:30 am — 5:10 am CX811 Cathay Pacific
Boston — Hong Kong
2h 45m stop
7:55 am — 9:40 am TG603 Thai Airways
Hong Kong — Bangkok
21h 10m
including layover
Find flight
from$1235
0:30 am — 8:40 pm
+1 day
0:30 am — 5:10 am CX811 Cathay Pacific
Boston — Hong Kong
13h 45m stop
6:55 pm — 8:40 pm TG639 Thai Airways
Hong Kong — Bangkok
32h 10m
including layover
Find flight
from$4550
*Departure and arrival times are local. Last updated on 02/23/2025

Flight Information

There are 19 flights by Cathay Pacific from Boston to Bangkok every week with departures from Logan, Boston City Heliport, Boston RT128 Rail, Boston South Rail. All flights arrive at Suvarnabhumi and Don Muang.

Departures start from 0:30 am to 0:30 am. Nonstop flight is 21h 10m. The time difference between Boston and Bangkok is 0h.

  • The fastest flight 21h 10m
  • Average flight time 26h 53m
  • The earliest flight 0:30 am
  • The latest flight 0:30 am
  • Distance 8529 ml

The cheapest months for traveling to Bangkok are november (from 629 $), january (from 629 $), february (from 689 $).

The most expensive and popular months are december (from 922 $), february (from 689 $), january (from 629 $).

The cheapest flight by Cathay Pacific that our users were able to find is $629. This airfare is economy class on one-way CX811 flight for February 21, 2025 leaving Logan in Boston at 0:30 am, it includes all taxes and additional fees.

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Other Popular Airlines on the Route

Besides Cathay Pacific there are other 1 airline carriers between Boston and Bangkok. Please review schedules and prices from the most popular airlines to find the best airfare deals from Boston to Bangkok.

Nonstop flights

There’re no direct flights on this route. Try flights with stops.

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Connecting Flights

List of flights with layovers (1 and more stops):

  • LX - SWISS International Air Lines
    from $742
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See more connecting flights

How to book an air ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected airfare.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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