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$832+ Cheap flights from Portland, ME (PWM) to Thailand

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 1/2. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BKK
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
1 adult, Economy
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Cheap flight deals from Portland to Thailand

Keep the following information in mind while searching for Portland to Thailand flight deals. Data was last updated November 26, 2025.

Round-trip from

$1,020
(Korean Air)

One-way from

$832
(United Airlines)

Popular in

December

Cheapest in

November

Average price

$1,060
From Portland to Thailand
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One-way flight from Portland to Thailand
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Highest demand for flights based on searches. 20% potential increase in price ($365 potential increase over avg. RT price).
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Cheapest flight prices on average. 10% potential price decrease ($132 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 Thailand

Cheapest flights from Portland to Thailand
Explore the most affordable flight options available from Portland to Thailand. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 26, 2025.

This United Airlines deal was found by Cheapflights users on 11/24. 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.
Sat 11/293:20 pmPWM - BKK
2 stops45h 00mUnited Airlines
Tue 12/24:55 pmBKK - PWM
3 stops33h 24mUnited Airlines
Deal found 11/24$1,252
This Korean Air deal was found by Cheapflights users on 11/23. 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.
Fri 11/281:25 pmPWM - HKT
2 stops44h 45mKorean Air
Tue 12/211:40 pmHKT - PWM
2 stops24h 33mKorean Air
Deal found 11/23$1,354
This United Airlines deal was found by Cheapflights users on 11/24. 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 12/84:25 pmPWM - BKK
3 stops55h 00mUnited Airlines
Wed 1/284:55 pmBKK - PWM
3 stops33h 36mUnited Airlines
Deal found 11/24$1,445
This Priceline deal was found by Cheapflights users on 11/24. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/296:00 amPWM - BKK
2 stops30h 45mKorean Air
Mon 12/12:05 amBKK - PWM
2 stops46h 08mKorean Air
Deal found 11/24$1,532
This Air France deal was found by Cheapflights users on 11/24. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/82:34 pmPWM - BKK
2 stops30h 41mMultiple Airlines
Wed 1/2812:15 pmBKK - PWM
2 stops46h 12mMultiple Airlines
Deal found 11/24$1,562
This Delta deal was found by Cheapflights users on 11/24. 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 12/86:08 amPWM - BKK
2 stops30h 47mDelta
Tue 1/2712:55 amBKK - PWM
2 stops33h 32mDelta
Deal found 11/24$2,641

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Thailand 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 26, 2025.
Use the filters below to find and compare flights from Portland to Thailand that are best for you.

Fly from

Portland

Fly to

Thailand

Route

Depart

Return

Price

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Sun 1/18

2:35 pm-12:45 am

2 stops46h 10m

Bangkok Suvarnabhumi

Wed 1/28

2:05 am-12:20 am

2 stops34h 15m

$1,020

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-3:14 pm

3 stops34h 19m

$1,064

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Sun 1/18

4:10 pm-11:25 am

3 stops55h 15m

Bangkok Suvarnabhumi

Thu 1/29

4:55 pm-2:31 pm

3 stops33h 36m

$1,064

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Wed 1/14

4:10 pm-11:25 am

3 stops55h 15m

Bangkok Suvarnabhumi

Sun 2/15

4:55 pm-2:23 pm

3 stops33h 28m

$1,104

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Mon 1/5

9:30 am-11:25 am

3 stops37h 55m

Bangkok Suvarnabhumi

Tue 2/17

4:55 pm-9:14 pm

3 stops40h 19m

$1,173

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Fri 1/2

7:30 pm-11:25 am

3 stops75h 55m

$832

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Fri 1/2

12:37 pm-12:15 pm

2 stops35h 38m

$950

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/25

Best time to book a flight from Portland to Thailand

Have a flexible travel schedule? Discover the best time to fly to Thailand 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 Thailand

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

Currently, October is the cheapest month in which you can book a flight from Portland, Maine to Thailand (average of $683). Flying from Portland, Maine to Thailand in June is currently the most expensive (average of $1,116). 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 TH?

Find hourly flight availability from Portland to Thailand. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 26, 2025.

A simple way to save on the total cost of your ticket is to fly from Portland, Maine to Thailand at noon. If you’re flexible enough to do this you can expect to save up to 47% on your trip compared to booking a flight in the morning.

Reviews of airlines servicing Thailand

Get insights into the airlines that provide service to Thailand. 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 Thailand. Reviews last updated November 26, 2025.
Peruse reviews from past customers who have flown with United Airlines from Portland to Thailand to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,046 reviews

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Entertainment

7.1

Boarding

7.7

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
9,046 reviews
United Airlines
7.4
Good
9,046 reviews

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Entertainment

7.1

Boarding

7.7

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 Thailand. 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 Thailand?

    Portland (PWM) is the airport you will fly out of if you book a flight from Portland to Thailand. It is only a 2.9 mi journey to Portland (PWM) from Portland’s city center.

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

    Airlines like Korean Air and United Airlines fly from Portland, Maine to Thailand in about 46h 10m. The time it takes to get you to your destination can typically vary by up to 9h 05m. Portland, Maine and Thailand are separated by a distance of 8429 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland to Thailand 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 Thailand?

    Currently, October is the cheapest month in which you can book a flight from Portland, Maine to Thailand (average of $683). Flying from Portland, Maine to Thailand in June is currently the most expensive (average of $1,116). 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 Thailand

Discover the top airline that operate flights from Portland to Thailand. 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 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,047Average$1,274FlexibilityNo cancel feeOn-time69%

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