HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Bangkok

$536+ 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BKK
Aug 6 — Aug 131
Wed 8/6
Wed 8/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Bangkok 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 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 August 1, 2025.

Round-trip from

$970
(American Airlines)

One-way from

$536
(oojo)

Popular in

November

Cheapest in

April

Average price

$1,239
From Portland to Bangkok
Search Deals
One-way flight from Portland to Bangkok
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($93 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

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 August 1, 2025.

This American Airlines deal was found by Cheapflights users on 7/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/146:15 amPWM - BKK
2 stops29h 45mAmerican Airlines
Sun 9/218:05 amBKK - PWM
2 stops26h 54mAmerican Airlines
Deal found 7/31$970
This United Airlines deal was found by Cheapflights users on 7/31. 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 9/246:15 amPWM - BKK
2 stops35h 20mUnited Airlines
Sun 9/289:35 amBKK - PWM
2 stops49h 24mUnited Airlines
Deal found 7/31$1,084
This Delta deal was found by Cheapflights users on 7/30. 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.
Sat 9/131:35 pmPWM - BKK
2 stops46h 50mDelta
Sat 9/2011:30 pmBKK - PWM
2 stops35h 41mDelta
Deal found 7/30$1,108
This Turkish Airlines deal was found by Cheapflights users on 7/30. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/242:17 pmPWM - BKK
2 stops51h 58mTurkish Airlines
Sun 9/286:45 amBKK - PWM
2 stops41h 37mTurkish Airlines
Deal found 7/30$1,123
This Korean Air deal was found by Cheapflights users on 7/31. 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.
Sat 11/225:40 amPWM - BKK
2 stops27h 50mMultiple Airlines
Thu 12/41:00 amBKK - PWM
2 stops22h 51mMultiple Airlines
Deal found 7/31$1,282
This Korean Air deal was found by Cheapflights users on 7/29. 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 9/246:00 amPWM - BKK
2 stops28h 45mKorean Air
Sat 9/272:35 amBKK - PWM
2 stops32h 36mKorean Air
Deal found 7/29$1,439
This oojo deal was found by Cheapflights users on 7/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/73:53 pmPWM - BKK
2 stops26h 47mQatar Airways
Sat 11/222:00 amBKK - PWM
2 stops51h 07mQatar Airways
Deal found 7/30$1,614
This oojo deal was found by Cheapflights users on 7/31. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/142:17 pmPWM - BKK
2 stops43h 08mAir India
Sun 9/218:40 amBKK - PWM
2 stops39h 42mAir India
Deal found 7/31$1,972
This Singapore Airlines deal was found by Cheapflights users on 7/29. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/242:17 pmPWM - BKK
2 stops30h 58mSingapore Airlines
Sun 9/286:30 pmBKK - PWM
3 stops38h 37mSingapore Airlines
Deal found 7/29$2,032
This oojo deal was found by Cheapflights users on 8/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/56:05 amPWM - BKK
2 stops24h 05mCathay Pacific
Wed 8/68:55 pmBKK - PWM
2 stops38h 22mCathay Pacific
Deal found 8/1$15,846

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 August 1, 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

Sun 9/14

6:15 am-11:00 pm

2 stops29h 45m

Bangkok Suvarnabhumi

Sun 9/21

8:05 am-11:59 pm

2 stops26h 54m

$970

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Wed 9/24

6:15 am-4:35 am

2 stops35h 20m

Bangkok Suvarnabhumi

Sun 9/28

9:35 am-11:59 pm

2 stops49h 24m

$1,084

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Sat 9/13

1:35 pm-11:25 pm

2 stops46h 50m

Bangkok Suvarnabhumi

Sat 9/20

11:30 pm-12:11 am

2 stops35h 41m

$1,108

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Wed 9/24

2:17 pm-5:15 am

2 stops51h 58m

Bangkok Suvarnabhumi

Sun 9/28

6:45 am-1:22 pm

2 stops41h 37m

$1,123

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Sat 11/22

5:40 am-9:30 pm

2 stops27h 50m

Bangkok Suvarnabhumi

Thu 12/4

1:00 am-11:51 am

2 stops22h 51m

$1,282

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Wed 9/24

6:00 am-9:45 pm

2 stops28h 45m

Bangkok Suvarnabhumi

Sat 9/27

2:35 am-12:11 am

2 stops32h 36m

$1,439

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Fri 11/7

3:53 pm-6:40 am

2 stops26h 47m

Bangkok Suvarnabhumi

Sat 11/22

2:00 am-5:07 pm

2 stops51h 07m

$1,614

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Sun 9/14

2:17 pm-8:25 pm

2 stops43h 08m

Bangkok Suvarnabhumi

Sun 9/21

8:40 am-1:22 pm

2 stops39h 42m

$1,972

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Wed 9/24

2:17 pm-8:15 am

2 stops30h 58m

Bangkok Suvarnabhumi

Sun 9/28

6:30 pm-10:07 pm

3 stops38h 37m

$2,032

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Tue 10/21

7:09 am-8:25 pm

2 stops26h 16m

$536

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 17 results
1
2

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 $946). Flying from Portland, Maine to Bangkok in December is currently the most expensive (average of $1,563). 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 August 1, 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 August 1, 2025.
Read through reviews of airlines operating flights from Portland to Bangkok, such as Korean Air, Japan Airlines, and Singapore Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,121 reviews

Overall

8.4

Boarding

8.5

Food

8.1

Entertainment

8.2

Comfort

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,121 reviews
Korean Air
8.4
Very good
1,121 reviews

Overall

8.4

Boarding

8.5

Food

8.1

Entertainment

8.2

Comfort

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Japan Airlines
8.3
Very good
1,536 reviews
Korean Air
8.4
Very good
1,121 reviews

Overall

8.4

Boarding

8.5

Food

8.1

Entertainment

8.2

Comfort

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Singapore Airlines
8.1
Very good
1,338 reviews
Korean Air
8.4
Very good
1,121 reviews

Overall

8.4

Boarding

8.5

Food

8.1

Entertainment

8.2

Comfort

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Delta
8.0
Very good
7,981 reviews
Korean Air
8.4
Very good
1,121 reviews

Overall

8.4

Boarding

8.5

Food

8.1

Entertainment

8.2

Comfort

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Cathay Pacific
7.6
Good
949 reviews
Korean Air
8.4
Very good
1,121 reviews

Overall

8.4

Boarding

8.5

Food

8.1

Entertainment

8.2

Comfort

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

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. 2 airlines 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.

  • What are the cheapest airlines flying from Portland, Maine to Bangkok round-trip?

    According to our current data, American Airlines ($970), United Airlines ($1,084), and Delta ($1,108) offers the cheapest pricing from Portland, Maine to Bangkok. American Airlines is currently priced 26% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Portland, Maine to Bangkok one-way?

    $536 is the cheapest one-way deal found within the past few days, from Air India. You may also be able to find cheap deals on Delta and Japan Airlines, with prices starting from $540 and $549, respectively.

  • 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 $946). Flying from Portland, Maine to Bangkok in December is currently the most expensive (average of $1,563). 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.

Top 2 airlines flying from Portland to Bangkok

Discover the top 2 airlines 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 August 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,047Average$1,274FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$1,197Average$1,345FlexibilityNo cancel feeOn-time81%

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.