HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Thailand

$660+ 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 12/29. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BKK
Nov 13 — Nov 201
Thu 11/13
Thu 11/20
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Thailand with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 October 14, 2025.

Round-trip from

$982
(Delta)

One-way from

$660
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$965
From Portland to Thailand
Search Deals
One-way flight from Portland to Thailand
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($203 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

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 October 14, 2025.

This Expedia deal was found by Cheapflights users on 10/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:00 amPWM - BKK
2 stops30h 55mKorean Air
Wed 12/32:05 amBKK - PWM
2 stops33h 54mKorean Air
Deal found 10/13$1,033
This United Airlines deal was found by Cheapflights users on 10/14. 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 11/1210:45 amPWM - BKK
3 stops36h 40mUnited Airlines
Mon 12/154:55 pmBKK - PWM
3 stops37h 47mUnited Airlines
Deal found 10/14$1,048
This United Airlines deal was found by Cheapflights users on 10/14. 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.
Sun 11/306:00 amPWM - BKK
2 stops35h 10mUnited Airlines
Wed 2/254:55 pmBKK - PWM
3 stops58h 16mUnited Airlines
Deal found 10/14$1,104
This United Airlines deal was found by Cheapflights users on 10/14. 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.
Fri 11/143:20 pmPWM - BKK
3 stops56h 05mUnited Airlines
Sun 12/144:55 pmBKK - PWM
3 stops28h 15mUnited Airlines
Deal found 10/14$1,145
This United Airlines deal was found by Cheapflights users on 10/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/53:20 pmPWM - BKK
3 stops56h 05mUnited Airlines
Sun 11/94:55 pmBKK - PWM
3 stops33h 17mUnited Airlines
Deal found 10/13$1,154
This United Airlines deal was found by Cheapflights users on 10/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/275:30 amPWM - BKK
2 stops35h 40mUnited Airlines
Thu 12/44:55 pmBKK - PWM
3 stops33h 27mUnited Airlines
Deal found 10/13$1,199
This Korean Air deal was found by Cheapflights users on 10/14. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/301:25 pmPWM - BKK
2 stops60h 00mKorean Air
Wed 2/259:40 amBKK - PWM
2 stops48h 19mKorean Air
Deal found 10/14$1,201
This Delta deal was found by Cheapflights users on 10/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/121:25 pmPWM - BKK
2 stops45h 55mDelta
Mon 12/1511:15 pmBKK - PWM
2 stops26h 39mDelta
Deal found 10/14$1,203
This Korean Air deal was found by Cheapflights users on 10/13. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/286:00 amPWM - HKT
2 stops28h 10mKorean Air
Tue 12/911:40 pmHKT - PWM
2 stops34h 43mKorean Air
Deal found 10/13$1,343
This Korean Air deal was found by Cheapflights users on 10/13. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/286:00 amPWM - HKT
2 stops28h 10mMultiple Airlines
Mon 12/811:40 pmHKT - PWM
2 stops26h 14mMultiple Airlines
Deal found 10/13$1,368
This Korean Air deal was found by Cheapflights users on 10/13. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/286:00 amPWM - HKT
2 stops28h 10mKorean Air
Thu 12/1111:40 pmHKT - PWM
2 stops34h 43mKorean Air
Deal found 10/13$1,383
This Korean Air deal was found by Cheapflights users on 10/13. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/286:00 amPWM - HKT
2 stops28h 10mKorean Air
Fri 12/511:40 pmHKT - PWM
2 stops34h 43mKorean Air
Deal found 10/13$1,408

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 October 14, 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

Sat 2/28

12:50 pm-12:45 am

2 stops47h 55m

Bangkok Suvarnabhumi

Thu 3/12

12:55 am-4:15 pm

2 stops26h 20m

$1,016

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Thu 11/27

6:00 am-12:55 am

2 stops30h 55m

Bangkok Suvarnabhumi

Wed 12/3

2:05 am-11:59 pm

2 stops33h 54m

$1,033

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Wed 3/4

6:00 am-11:25 am

3 stops41h 25m

Bangkok Suvarnabhumi

Mon 3/16

4:55 pm-10:48 am

3 stops28h 53m

$1,048

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Tue 3/3

5:45 am-11:25 am

3 stops41h 40m

Bangkok Suvarnabhumi

Wed 3/18

4:55 pm-10:48 am

3 stops28h 53m

$1,048

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Thu 11/27

9:45 am-11:25 am

3 stops37h 40m

Bangkok Suvarnabhumi

Thu 12/4

4:55 pm-6:54 pm

3 stops37h 59m

$1,048

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Wed 3/4

6:00 am-11:25 am

3 stops41h 25m

Bangkok Suvarnabhumi

Wed 3/18

4:55 pm-10:48 am

3 stops28h 53m

$1,048

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Fri 2/27

12:50 pm-12:45 am

2 stops47h 55m

Bangkok Suvarnabhumi

Mon 3/16

12:55 am-4:15 pm

2 stops26h 20m

$1,050

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Sun 3/1

2:10 pm-5:10 am

2 stops51h 00m

Bangkok Suvarnabhumi

Wed 3/18

4:55 pm-10:48 am

3 stops28h 53m

$1,055

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Mon 3/2

3:20 pm-11:25 am

3 stops56h 05m

Bangkok Suvarnabhumi

Wed 3/18

4:55 pm-10:48 am

3 stops28h 53m

$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-3:11 pm

3 stops34h 16m

$1,064

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/14

Showing 1-10 of 22 results
1
2
3

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, April is the cheapest month in which you can book a flight from Portland, Maine to Thailand (average of $679). 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 October 14, 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 October 14, 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
8,976 reviews

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
United Airlines
7.4
Good
8,976 reviews
United Airlines
7.4
Good
8,976 reviews

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

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 Delta, Korean Air, and United Airlines fly from Portland, Maine to Thailand in about 30h 55m. The time it takes to get you to your destination can typically vary by up to 17h. 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, April is the cheapest month in which you can book a flight from Portland, Maine to Thailand (average of $679). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Thailand

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Narita flights
Boston to Haneda flights
Boston to Suvarnabhumi flights
Boston to Mumbai flights
Boston to New Delhi flights
Boston to Ho Chi Minh City flights
Boston to Incheon Intl flights
Boston to Taiwan Taoyuan Intl flights
Boston to Bangalore flights
Boston to Ahmedabad flights
Boston to Manila flights
Boston to Hongqiao Intl flights
Boston to Hyderabad flights
Boston to Sung Shan flights
Boston to Kathmandu flights
Boston to Lahore flights
Boston to Pu Dong flights
Boston to Hong Kong flights
Boston to Chennai flights
Boston to Singapore flights
Boston to Capital flights
Boston to Hanoi flights
Boston to Beijing Daxing Intl flights
Boston to Denpasar flights
Boston to Dhaka flights
Boston to Gimpo Intl flights
Boston to Don Mueang Intl flights
Boston to Kansai Intl flights
Boston to Da Nang flights
Boston to Cochin flights
Boston to Itami flights
Boston to Phuket City flights
Boston to Kobe flights
Boston to Malé flights
Boston to Kolkata flights
Boston to Cebu City flights
Boston to Islamabad flights
Boston to Soekarno-Hatta Intl flights
Boston to Colombo flights
Boston to Chitose flights
Boston to Kuala Lumpur Intl flights
Boston to Almaty flights
Boston to Vadodara flights
Boston to Karachi flights
Boston to Guangzhou flights
Boston to Yerevan flights
Boston to Fuzhou flights
Boston to Chiang Mai flights
Portland to Haneda flights
Boston to Chubu Centrair Intl flights

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 October 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,047Average$1,274FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.