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$998+ Cheap flights from Portland, ME (PWM) to Thailand

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BKK
Mrz 28 — Apr 41
Sa 3/28
Sa 4/4
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 Februar 26, 2026.

This Etihad Airways deal was found by Cheapflights users on 2/26. 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.
So 11/15:41 am
PWM
-
BKK
2 stops37h 29m
Multiple Airlines
Sa 11/142:40 pm
BKK
-
PWM
2 stops43h 53m
Multiple Airlines
Deal found 2/26$998
This United Airlines deal was found by Cheapflights users on 2/26. 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.
Do 10/16:00 am
PWM
-
BKK
2 stops35h 35m
United Airlines
Mi 10/289:10 am
BKK
-
PWM
2 stops39h 42m
United Airlines
Deal found 2/26$1,085
This United Airlines deal was found by Cheapflights users on 2/24. 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.
So 3/85:45 am
PWM
-
BKK
3 stops66h 40m
United Airlines
Do 3/124:55 pm
BKK
-
PWM
3 stops33h 19m
United Airlines
Deal found 2/24$1,167
This United Airlines deal was found by Cheapflights users on 2/26. 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.
So 4/129:49 am
PWM
-
BKK
3 stops36h 46m
United Airlines
So 4/193:45 pm
BKK
-
PWM
3 stops36h 47m
United Airlines
Deal found 2/26$1,305
This United Airlines deal was found by Cheapflights users on 2/23. 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.
Do 4/96:04 am
PWM
-
BKK
3 stops64h 31m
United Airlines
Do 4/163:45 pm
BKK
-
PWM
3 stops40h 55m
United Airlines
Deal found 2/23$1,308
This Korean Air deal was found by Cheapflights users on 2/26. 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.
So 12/136:30 am
PWM
-
BKK
2 stops30h 15m
Korean Air
Sa 12/2611:15 pm
BKK
-
PWM
2 stops26h 38m
Korean Air
Deal found 2/26$1,316
This United Airlines deal was found by Cheapflights users on 2/24. 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.
Fr 4/106:18 pm
PWM
-
BKK
3 stops52h 17m
United Airlines
Fr 4/173:45 pm
BKK
-
PWM
3 stops34h 54m
United Airlines
Deal found 2/24$1,348
This Korean Air deal was found by Cheapflights users on 2/24. 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.
So 3/82:30 pm
PWM
-
BKK
2 stops47h 25m
Korean Air
Mi 3/112:05 am
BKK
-
PWM
2 stops32h 17m
Korean Air
Deal found 2/24$1,372
This Qatar Airways deal was found by Cheapflights users on 2/22. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 3/2112:44 pm
PWM
-
HKT
2 stops43h 11m
Qatar Airways
Mi 3/258:20 am
HKT
-
PWM
2 stops38h 54m
Qatar Airways
Deal found 2/22$2,330
This American Airlines deal was found by Cheapflights users on 2/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 12/2212:36 pm
PWM
-
HKT
2 stops36h 19m
American Airlines
Mi 12/308:30 pm
HKT
-
PWM
2 stops27h 41m
American Airlines
Deal found 2/23$2,561
This BusinessClass deal was found by Cheapflights users on 2/24. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mo 5/411:34 am
PWM
-
HKT
2 stops37h 26m
Emirates
Di 5/1211:45 pm
HKT
-
PWM
2 stops46h 08m
Emirates
Deal found 2/24$21,923
This oojo deal was found by Cheapflights users on 2/24. 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.
Mo 5/46:00 am
PWM
-
HKT
3 stops39h 35m
Multiple Airlines
Di 5/1211:40 am
HKT
-
PWM
3 stops46h 56m
Multiple Airlines
Deal found 2/24$25,706

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 Februar 26, 2026.

Round-trip from

$1,167
(United Airlines)

Popular in

December

Cheapest in

March

Average price

$951
From Portland to Thailand
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 Februar 26, 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

PortlandBangkok

PWM - BKK

PWMBKK

Portland

So 3/8

5:45 am-11:25 am

3 stops66h 40m

Bangkok Suvarnabhumi

Do 3/12

4:55 pm-3:14 pm

3 stops33h 19m

$1,167

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Fr 4/10

6:18 pm-9:35 am

3 stops52h 17m

Bangkok Suvarnabhumi

Fr 4/17

3:45 pm-3:39 pm

3 stops34h 54m

$1,348

PortlandBangkok

PWM - BKK

PWMBKK

Portland

So 3/8

2:30 pm-12:55 am

2 stops47h 25m

Bangkok Suvarnabhumi

Mi 3/11

2:05 am-11:22 pm

2 stops32h 17m

$1,472

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Do 4/9

6:00 am-11:55 pm

2 stops30h 55m

Bangkok Suvarnabhumi

Do 4/16

3:45 pm-5:32 pm

3 stops36h 47m

$1,654

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Di 6/9

2:25 pm-11:00 am

3 stops33h 35m

Bangkok Suvarnabhumi

Di 8/11

8:15 pm-11:57 pm

2 stops38h 42m

$1,828

PortlandBangkok

PWM - BKK

PWMBKK

Portland

Mi 3/25

12:44 pm-1:05 pm

2 stops37h 21m

Bangkok Suvarnabhumi

Di 3/31

1:50 am-11:56 pm

3 stops33h 06m

$1,841

PortlandPhuket City

PWM - HKT

PWMHKT

Portland

Sa 3/21

12:44 pm-6:55 pm

2 stops43h 11m

Phuket City

Mi 3/25

8:20 am-12:14 pm

2 stops38h 54m

$2,330

PortlandPhuket City

PWM - HKT

PWMHKT

Portland

Mo 5/4

11:34 am-12:00 pm

2 stops37h 26m

Phuket City

Di 5/12

11:45 pm-10:53 am

2 stops46h 08m

$21,923

PortlandPhuket City

PWM - HKT

PWMHKT

Portland

Mo 5/4

6:00 am-8:35 am

3 stops39h 35m

Phuket City

Di 5/12

11:40 am-11:36 pm

3 stops46h 56m

$25,706

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/24

Sorted by cheapest first

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 $603). 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 Februar 26, 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 Februar 26, 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
9,348 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

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
9,348 reviews
United Airlines
7.4
Good
9,348 reviews

Entertainment

7.1

Food

6.6

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

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 United Airlines, Qatar Airways, and Emirates fly from Portland, Maine to Thailand in about 37h 26m. The time it takes to get you to your destination can typically vary by up to 29h 14m. Portland, Maine and Thailand are separated by a distance of 8784 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 $603). 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 Februar 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,047Average$1,234FlexibilityNo cancel feeOn-time69%

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