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$549+ 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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BKK
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
1 adult, Economy
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Cheap 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 March 23, 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 3/20. 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.
Thu 9/107:09 am
PWM
-
HKT
2 stops29h 31m
Etihad Airways
Mon 9/149:20 pm
HKT
-
PWM
2 stops35h 47m
Etihad Airways
Deal found 3/20$1,038
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 Korean Air deal was found by Cheapflights users on 3/18. 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 10/286:30 am
PWM
-
HKT
2 stops52h 40m
Korean Air
Sun 11/111:40 pm
HKT
-
PWM
2 stops34h 43m
Korean Air
Deal found 3/18$1,396
This FlightHub deal was found by Cheapflights users on 3/21. 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.
Mon 6/296:00 am
PWM
-
HKT
2 stops52h 15m
Multiple Airlines
Sat 7/410:25 pm
HKT
-
PWM
2 stops50h 04m
Multiple Airlines
Deal found 3/21$1,745
This Singapore Airlines deal was found by Cheapflights users on 3/20. 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.
Thu 9/102:17 pm
PWM
-
HKT
3 stops41h 58m
Singapore Airlines
Mon 9/146:00 pm
HKT
-
PWM
3 stops39h 07m
Singapore Airlines
Deal found 3/20$1,846
This FlightHub deal was found by Cheapflights users on 3/21. 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.
Mon 6/292:25 pm
PWM
-
HKT
3 stops33h 25m
Singapore Airlines
Sat 7/411:40 am
HKT
-
PWM
3 stops47h 17m
Singapore Airlines
Deal found 3/21$2,402

Find flight deals from Portland to Thailand

Keep the following information in mind while searching for Portland to Thailand flight deals. Data was last updated March 23, 2026.

Round-trip from

$962
(FlightHub)

One-way from

$549
(Japan Airlines)

Popular in

January

Cheapest in

November

Average price

$1,174
From Portland to Thailand
Search Deals
One-way flight from Portland to Thailand
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
Search Deals

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 March 23, 2026.
Use the filters below to find and compare flights from Portland to Thailand 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

Fri 9/11

7:09 am-6:15 am

2 stops36h 06m

Bangkok Suvarnabhumi

Tue 9/15

9:15 am-1:22 pm

2 stops39h 07m

$1,008

PortlandPhuket City

PWM - HKT

PWMHKT

Portland

Thu 9/10

7:09 am-11:40 pm

2 stops29h 31m

Phuket City

Mon 9/14

9:20 pm-10:07 pm

2 stops35h 47m

$1,038
Quickest round-trip

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Fri 9/11

5:05 pm-9:35 am

3 stops29h 30m

Bangkok Suvarnabhumi

Tue 9/15

3:45 pm-10:02 am

3 stops29h 17m

$1,351

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

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

PortlandPhuket City

PWM - HKT

PWMHKT

Portland

Mon 6/29

6:00 am-9:15 pm

2 stops52h 15m

Phuket City

Sat 7/4

10:25 pm-1:29 pm

2 stops50h 04m

$1,745

PortlandPhuket City

PWM - HKT

PWMHKT

Portland

Thu 9/10

2:17 pm-8:35 am

3 stops31h 18m

Phuket City

Mon 9/14

9:25 am-10:07 pm

3 stops47h 42m

$1,846

PortlandPhuket City

PWM - HKT

PWMHKT

Portland

Mon 6/29

2:25 pm-8:35 am

3 stops31h 10m

Phuket City

Sat 7/4

8:10 pm-11:57 pm

2 stops38h 47m

$2,753
Cheapest one-way

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Sun 8/30

6:15 am-5:45 am

2 stops36h 30m

$549

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/18

Showing 1-10 of 16 resultsSorted by cheapest first
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 $630). Flying from Portland, Maine to Thailand 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.

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 March 23, 2026.

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 68% on your trip compared to booking a flight in the evening.

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 March 23, 2026.
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
9,462 reviews

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

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
9,462 reviews
United Airlines
7.4
Good
9,462 reviews

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

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 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 Etihad Airways and Singapore Airlines fly from Portland, Maine to Thailand in about 37h 30m. The time it takes to get you to your destination can typically vary by up to 4h 28m. 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, March is the cheapest month in which you can book a flight from Portland, Maine to Thailand (average of $630). Flying from Portland, Maine to Thailand 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

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

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 March 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,047Average$1,234FlexibilityNo cancel feeOn-time69%

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