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$546+ 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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BKK
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$1,335
(United Airlines)

One-way from

$546
(United Airlines)

Popular in

December

Cheapest in

April

Average price

$1,274
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. 21% potential increase in price ($392 potential increase over avg. RT price).
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Cheapest flight prices on average. 11% potential price decrease ($158 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/10. 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 12/86:00 amPWM - BKK
2 stops30h 05mUnited Airlines
Thu 1/84:40 pmBKK - PWM
3 stops33h 47mUnited Airlines
Deal found 6/10$1,335
This Trip.com deal was found by Cheapflights users on 6/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/276:54 pmPWM - BKK
2 stops31h 21mKorean Air
Sun 8/39:40 pmBKK - PWM
2 stops37h 58mKorean Air
Deal found 6/12$1,435
This Air France deal was found by Cheapflights users on 6/10. 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 12/812:50 pmPWM - BKK
2 stops32h 25mMultiple Airlines
Thu 1/812:15 pmBKK - PWM
2 stops47h 14mMultiple Airlines
Deal found 6/10$1,523
This Delta deal was found by Cheapflights users on 6/10. 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 12/82:35 pmPWM - BKK
2 stops46h 10mDelta
Wed 1/71:00 amBKK - PWM
2 stops35h 04mDelta
Deal found 6/10$2,338
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Fri 7/256:15 amPWM - BKK
2 stops29h 45mAmerican Airlines
Fri 8/18:05 amBKK - PWM
3 stops26h 54mAmerican Airlines
Deal found 6/10$5,035

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 June 12, 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

Mon 12/8

6:00 am-12:05 am

2 stops30h 05m

Bangkok Suvarnabhumi

Thu 1/8

4:40 pm-2:27 pm

3 stops33h 47m

$1,335

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Sun 7/27

6:54 pm-1:15 pm

2 stops31h 21m

Bangkok Suvarnabhumi

Sun 8/3

9:40 pm-12:38 am

2 stops37h 58m

$1,435

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Mon 12/8

12:50 pm-9:15 am

2 stops32h 25m

Bangkok Suvarnabhumi

Thu 1/8

12:15 pm-11:29 pm

2 stops47h 14m

$1,523

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Mon 12/8

2:35 pm-12:45 am

2 stops46h 10m

Bangkok Suvarnabhumi

Wed 1/7

1:00 am-12:04 am

2 stops35h 04m

$2,338

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Fri 7/25

6:15 am-11:00 pm

2 stops29h 45m

Bangkok Suvarnabhumi

Fri 8/1

8:05 am-11:59 pm

3 stops26h 54m

$5,035

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Mon 10/20

6:00 am-11:55 pm

2 stops30h 55m

$546

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Sat 7/26

6:00 am-11:25 pm

2 stops30h 25m

$601

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Fri 7/25

6:05 am-5:50 am

2 stops36h 45m

$624

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Fri 10/24

5:40 am-1:05 am

2 stops32h 25m

$709

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Sun 10/19

3:15 pm-11:25 pm

3 stops45h 10m

$758

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 11 results
1
2

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, March is the cheapest month in which you can book a flight from Portland, Maine to Thailand (average of $953). Flying from Portland, Maine to Thailand in December is currently the most expensive (average of $1,574). 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 June 12, 2025.

When flying from Portland, Maine to Thailand, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Thailand by month

Plan your trip to Thailand by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Thailand ranges from 0.4 - 12.6 inches per month. September is typically the wettest month, when rainfall can reach 12.6 in. January is typically the driest time to visit Thailand when rainfall is around 0.4 in.

Temperature in Thailand by month

Plan your trip to Thailand by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Thailand, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 86.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).

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 June 12, 2025.
Korean Air
8.4
Very good
1,088 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Overall

8.4

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
1,088 reviews
Korean Air
8.4
Very good
1,088 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Overall

8.4

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
1,490 reviews
Korean Air
8.4
Very good
1,088 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Overall

8.4

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
1,302 reviews
Korean Air
8.4
Very good
1,088 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Overall

8.4

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
7,946 reviews
Korean Air
8.4
Very good
1,088 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Overall

8.4

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.
United Airlines
7.4
Good
8,790 reviews
Korean Air
8.4
Very good
1,088 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Overall

8.4

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 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.

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

    The cheapest airlines for a one-way flight from Portland, Maine to Thailand are United Airlines ($546), Korean Air ($601), and Japan Airlines ($624).

  • 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, March is the cheapest month in which you can book a flight from Portland, Maine to Thailand (average of $953). Flying from Portland, Maine to Thailand in December is currently the most expensive (average of $1,574). 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 2 airlines flying from Portland to Thailand

Discover the top 2 airlines 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Korean AirCheapest$1,197Average$1,345FlexibilityNo cancel feeOn-time81%
DeltaCheapest$1,254Average$1,682FlexibilityNo cancel feeOn-timeN/A

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