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$542+ 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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BKK
Apr 23 — Apr 301
Thu 4/23
Thu 4/30
1 adult, Economy
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Cheap 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 March 24, 2026.

This FlightHub deal was found by Cheapflights users on 3/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/217:30 am
PWM
-
BKK
2 stops36h 15m
Etihad Airways
Tue 4/289:15 am
BKK
-
PWM
2 stops48h 47m
Etihad Airways
Deal found 3/22$962
This oojo deal was found by Cheapflights users on 3/19. 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.
Mon 5/46:00 am
PWM
-
BKK
2 stops37h 30m
Etihad Airways
Mon 5/113:55 pm
BKK
-
PWM
2 stops42h 41m
Etihad Airways
Deal found 3/19$978
This Etihad Airways deal was found by Cheapflights users on 3/22. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/117:09 am
PWM
-
BKK
2 stops36h 06m
Etihad Airways
Tue 9/159:15 am
BKK
-
PWM
2 stops39h 07m
Etihad Airways
Deal found 3/22$1,008
This Etihad Airways deal was found by Cheapflights users on 3/23. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:15 am
PWM
-
BKK
2 stops37h 00m
Multiple Airlines
Sat 9/263:15 am
BKK
-
PWM
2 stops31h 58m
Multiple Airlines
Deal found 3/23$1,068
This Priceline deal was found by Cheapflights users on 3/19. 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.
Wed 8/56:00 am
PWM
-
BKK
2 stops37h 15m
Etihad Airways
Tue 8/119:15 am
BKK
-
PWM
2 stops49h 42m
Etihad Airways
Deal found 3/19$1,157
This United Airlines deal was found by Cheapflights users on 3/19. 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 9/112:35 pm
PWM
-
BKK
3 stops32h 00m
United Airlines
Tue 9/153:45 pm
BKK
-
PWM
3 stops29h 27m
United Airlines
Deal found 3/19$1,351
This United Airlines deal was found by Cheapflights users on 3/19. 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 5/45:30 am
PWM
-
BKK
3 stops41h 05m
United Airlines
Mon 5/117:00 am
BKK
-
PWM
2 stops25h 19m
United Airlines
Deal found 3/19$1,366
This United Airlines deal was found by Cheapflights users on 3/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/73:39 pm
PWM
-
BKK
3 stops30h 56m
United Airlines
Thu 5/143:45 pm
BKK
-
PWM
3 stops53h 38m
United Airlines
Deal found 3/23$1,409

Find 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 March 24, 2026.

Round-trip from

$962
(FlightHub)

One-way from

$542
(oojo)

Popular in

January

Cheapest in

November

Average price

$1,174
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 ($92 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($43 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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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 March 24, 2026.
Use the filters below to find and compare flights from Portland to Bangkok that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Mon 5/4

6:00 am-6:30 am

2 stops37h 30m

Bangkok Suvarnabhumi

Mon 5/11

3:55 pm-11:36 pm

2 stops42h 41m

$978

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Mon 5/4

5:30 am-9:35 am

3 stops41h 05m

Bangkok Suvarnabhumi

Mon 5/11

7:00 am-9:19 pm

2 stops25h 19m

$1,366

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Thu 5/7

3:39 pm-9:35 am

3 stops30h 56m

Bangkok Suvarnabhumi

Thu 5/14

3:45 pm-10:23 am

3 stops53h 38m

$1,409

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Tue 4/21

2:12 pm-9:35 am

3 stops32h 23m

Bangkok Suvarnabhumi

Tue 4/28

3:45 pm-5:32 pm

3 stops36h 47m

$1,515

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Fri 5/29

6:00 am-5:45 am

2 stops36h 45m

Bangkok Suvarnabhumi

Sun 8/2

9:40 pm-11:57 pm

2 stops37h 17m

$5,577
Quickest round-trip

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Fri 5/29

6:00 am-11:55 pm

2 stops30h 55m

Bangkok Suvarnabhumi

Sun 8/2

7:00 am-9:41 pm

2 stops25h 41m

$6,093
Cheapest one-way
Quickest one-way

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Mon 5/4

6:00 am-11:50 pm

2 stops30h 50m

$555

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Mon 5/4

9:00 am-9:35 am

3 stops37h 35m

$695

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Sorted by cheapest first

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, February is the cheapest month in which you can book a flight from Portland, Maine to Bangkok (average of $733). Flying from Portland, Maine to Bangkok in June is currently the most expensive (average of $1,101). 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.

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 March 24, 2026.
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
9,469 reviews

Comfort

7.3

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,469 reviews
United Airlines
7.4
Good
9,469 reviews

Comfort

7.3

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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?

    Etihad Airways, United Airlines, and Japan Airlines can get you from Portland, Maine to Bangkok in just under 36h 45m. Your travel time can differ by up to 4h 20m. There are 8429 mi between Portland, Maine and Bangkok. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 15% 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, February is the cheapest month in which you can book a flight from Portland, Maine to Bangkok (average of $733). Flying from Portland, Maine to Bangkok in June is currently the most expensive (average of $1,101). 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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Alternative routes for Portland to Bangkok

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Suvarnabhumi flights
Boston to Phuket City flights
Boston to Chiang Mai flights
Bangor to Suvarnabhumi flights
Portland to Phuket City flights
Boston to Udon Thani flights

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 March 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,047Average$1,234FlexibilityNo cancel feeOn-time69%

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