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$1,048+ Cheap flights from Portland, ME (PWM) to Bangkok

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BKK
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
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 September 16, 2025.

Round-trip from

$1,048
(United Airlines)

Popular in

November

Cheapest in

April
From Portland to Bangkok
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($70 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($18 potential savings vs. average RT price).
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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 September 16, 2025.

This United Airlines deal was found by Cheapflights users on 9/14. 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 10/293:20 pmPWM - BKK
3 stops33h 05mUnited Airlines
Wed 11/54:55 pmBKK - PWM
3 stops33h 17mUnited Airlines
Deal found 9/14$1,048
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Thu 10/304:54 pmPWM - BKK
3 stops31h 31mUnited Airlines
Thu 11/64:55 pmBKK - PWM
3 stops57h 17mUnited Airlines
Deal found 9/15$1,064
This Delta deal was found by Cheapflights users on 9/15. 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 9/241:35 pmPWM - BKK
2 stops36h 40mDelta
Sun 9/289:40 pmBKK - PWM
2 stops37h 31mDelta
Deal found 9/15$1,079
This Expedia deal was found by Cheapflights users on 9/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/301:27 pmPWM - BKK
2 stops48h 18mKorean Air
Thu 11/611:15 pmBKK - PWM
2 stops35h 04mKorean Air
Deal found 9/15$1,292
This Qatar Airways deal was found by Cheapflights users on 9/13. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/242:30 pmPWM - BKK
2 stops35h 55mQatar Airways
Sat 9/272:30 amBKK - PWM
2 stops30h 37mQatar Airways
Deal found 9/13$1,433
This American Airlines deal was found by Cheapflights users on 9/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/303:28 pmPWM - BKK
2 stops26h 37mAmerican Airlines
Thu 11/68:05 amBKK - PWM
3 stops26h 49mAmerican Airlines
Deal found 9/15$4,971

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 September 16, 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

Wed 10/29

3:20 pm-11:25 am

3 stops33h 05m

Bangkok Suvarnabhumi

Wed 11/5

4:55 pm-2:12 pm

3 stops33h 17m

$1,048

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Thu 10/30

4:54 pm-11:25 am

3 stops31h 31m

Bangkok Suvarnabhumi

Thu 11/6

4:55 pm-2:12 pm

3 stops57h 17m

$1,064

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Wed 1/14

2:31 pm-5:10 am

2 stops50h 39m

Bangkok Suvarnabhumi

Mon 2/16

4:55 pm-3:11 pm

3 stops34h 16m

$1,081

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Wed 1/14

2:31 pm-5:10 am

2 stops50h 39m

Bangkok Suvarnabhumi

Sun 2/15

4:55 pm-9:14 pm

3 stops40h 19m

$1,121

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Thu 10/30

1:27 pm-12:45 am

2 stops48h 18m

Bangkok Suvarnabhumi

Thu 11/6

11:15 pm-10:19 pm

2 stops35h 04m

$1,292

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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, September is the cheapest month in which you can book a flight from Portland, Maine to Bangkok (average of $900). Flying from Portland, Maine to Bangkok in December is currently the most expensive (average of $1,507). 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 September 16, 2025.

A simple way to save on the total cost of your ticket is to fly from Portland, Maine to Bangkok in the morning. If you’re flexible enough to do this you can expect to save up to 31% on your trip compared to booking a flight in the evening.

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 September 16, 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
8,929 reviews

Boarding

7.7

Overall

7.4

Food

6.6

Crew

8.1

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Momny,Jun 2025

HND - BKK

I very love and happy with ANA and Sevice very super good .Thank you ANA
United Airlines
7.4
Good
8,929 reviews
United Airlines
7.4
Good
8,929 reviews

Boarding

7.7

Overall

7.4

Food

6.6

Crew

8.1

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Momny,Jun 2025

HND - BKK

I very love and happy with ANA and Sevice very super good .Thank you ANA

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?

    United Airlines can get you from Portland, Maine to Bangkok in just under 33h 05m. 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 20% 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, September is the cheapest month in which you can book a flight from Portland, Maine to Bangkok (average of $900). Flying from Portland, Maine to Bangkok in December is currently the most expensive (average of $1,507). 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

Browse thousands of different options on Cheapflights for your next trip

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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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,047Average$1,274FlexibilityNo cancel feeOn-time69%

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