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$564+ Cheap flights from Portland, ME (PWM) to Bangkok

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BKK
Dec 2 — Dec 91
Tue 12/2
Tue 12/9
1 adult, Economy
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Cheap flight deals from Portland to Bangkok

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to Bangkok (TH1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 2, 2025.

Round-trip from

$1,003
(Korean Air)

One-way from

$564
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$1,088
From Portland to Bangkok
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One-way flight from Portland to Bangkok
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Highest demand for flights based on searches. 19% potential increase in price ($324 potential increase over avg. RT price).
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Cheapest flight prices on average. 10% potential price decrease ($133 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Portland to Bangkok

Cheapest flights from Portland to Bangkok
Explore the most affordable flight options available from Portland to Bangkok. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 2, 2025.

This United Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/52:20 pmPWM - BKK
3 stops33h 05mUnited Airlines
Sun 11/94:55 pmBKK - PWM
3 stops33h 24mUnited Airlines
Deal found 10/31$1,138
This Delta deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/51:27 pmPWM - BKK
2 stops35h 58mDelta
Sun 11/911:15 pmBKK - PWM
2 stops49h 15mDelta
Deal found 10/30$1,166
This Delta deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/156:08 amPWM - BKK
2 stops30h 37mDelta
Sun 12/2112:55 amBKK - PWM
2 stops33h 48mDelta
Deal found 10/31$1,449
This Korean Air deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/56:00 amPWM - BKK
2 stops51h 30mKorean Air
Sat 11/812:55 amBKK - PWM
2 stops23h 13mKorean Air
Deal found 10/31$2,521
This United Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/153:00 pmPWM - BKK
3 stops32h 25mUnited Airlines
Mon 12/224:55 pmBKK - PWM
3 stops33h 19mUnited Airlines
Deal found 10/31$2,708

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Bangkok that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 2, 2025.
Use the filters below to find and compare flights from Portland to Bangkok that are best for you.

Fly from

Portland

Fly to

Bangkok

Route

Depart

Return

Price

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Mon 1/12

5:30 am-12:55 am

2 stops31h 25m

Bangkok Suvarnabhumi

Thu 2/26

12:55 am-1:45 pm

2 stops24h 50m

$1,003

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Thu 1/15

2:35 pm-12:45 am

2 stops46h 10m

Bangkok Suvarnabhumi

Thu 2/26

12:55 am-1:45 pm

2 stops24h 50m

$1,020

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Wed 1/14

6:17 am-12:55 am

2 stops30h 38m

Bangkok Suvarnabhumi

Wed 3/4

9:30 pm-1:45 pm

2 stops28h 15m

$1,022

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Mon 1/12

5:30 am-12:55 am

2 stops31h 25m

Bangkok Suvarnabhumi

Tue 3/3

12:55 am-1:45 pm

2 stops24h 50m

$1,022

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Mon 1/12

5:30 am-12:45 am

2 stops31h 15m

Bangkok Suvarnabhumi

Sun 3/1

12:55 am-11:04 pm

2 stops34h 09m

$1,028

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Sun 1/11

12:20 pm-11:20 pm

2 stops47h 00m

Bangkok Suvarnabhumi

Sun 3/1

12:55 am-11:04 pm

2 stops34h 09m

$1,035

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Sun 1/11

12:20 pm-11:20 pm

2 stops47h 00m

Bangkok Suvarnabhumi

Mon 3/2

12:55 am-11:04 pm

2 stops34h 09m

$1,035

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Thu 1/15

2:31 pm-11:25 am

3 stops32h 54m

Bangkok Suvarnabhumi

Tue 3/3

4:55 pm-2:23 pm

3 stops33h 28m

$1,048

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Wed 1/14

4:10 pm-11:25 am

3 stops55h 15m

Bangkok Suvarnabhumi

Mon 3/2

4:55 pm-3:14 pm

3 stops34h 19m

$1,064

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Wed 1/14

4:10 pm-11:25 am

3 stops55h 15m

Bangkok Suvarnabhumi

Mon 2/16

4:55 pm-2:23 pm

3 stops33h 28m

$1,064

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Showing 1-10 of 22 results
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Best time to book a flight from Portland to Bangkok

Have a flexible travel schedule? Discover the best time to fly to Bangkok from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portland to Bangkok

What is the cheapest month to book a flight from Portland, Maine to Bangkok?

Currently, March is the cheapest month in which you can book a flight from Portland, Maine to Bangkok (average of $763). Flying from Portland, Maine to Bangkok in June is currently the most expensive (average of $1,124). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PWM to BKK?

Find hourly flight availability from Portland to Bangkok. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 2, 2025.

A simple way to save on the total cost of your ticket is to fly from Portland, Maine to Bangkok at noon. If you’re flexible enough to do this you can expect to save up to 26% on your trip compared to booking a flight in the morning.

Reviews of airlines servicing Bangkok

Get insights into the airlines that provide service to Bangkok. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bangkok. Reviews last updated November 2, 2025.
Read through reviews of airlines operating flights from Portland to Bangkok, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,997 reviews

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
8,997 reviews
United Airlines
7.4
Good
8,997 reviews

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

Find useful and relevant information for your journey from Portland to Bangkok. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Portland to Bangkok?

    Portland (PWM), located 2.9 mi from the city center, is the airport you fly out of when you book flights from Portland to Bangkok. 1 airline have flights from Portland to Bangkok on a regular basis. Booking flights from Portland to Bangkok should not be difficult; the airport handles an average of 0 outbound flights to Bangkok per day.

  • How long is the flight from Portland, Maine to Bangkok?

    Korean Air can get you from Portland, Maine to Bangkok in just under 31h 25m. Your travel time can differ by up to . There are 8429 mi between Portland, Maine and Bangkok.

  • What is the cheapest airline to fly from Portland, Maine to Bangkok round-trip?

    According to our current data, United Airlines ($1,047), offers the cheapest pricing from Portland, Maine to Bangkok. United Airlines is currently priced 24% below the average price you’ll pay for this route.

  • Can I find deals for flights from Portland to Bangkok that include hotel bookings?

    Yes. In addition to deals on Portland to Bangkok flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Bangkok?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Bangkok.

  • Can I find deals for business class flights from Portland to Bangkok?

    Yes. Cheapflights offers flight deals from Portland to Bangkok by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland, Maine to Bangkok?

    Currently, March is the cheapest month in which you can book a flight from Portland, Maine to Bangkok (average of $763). Flying from Portland, Maine to Bangkok in June is currently the most expensive (average of $1,124). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top airline flying from Portland to Bangkok

Discover the top airline that operate flights from Portland to Bangkok. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,047Average$1,274FlexibilityNo cancel feeOn-time69%

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