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$361+ Cheap flights from Portland (PDX) 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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — BKK
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
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 January 27, 2026.

This United Airlines deal was found by Cheapflights users on 1/26. 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.
Thu 2/197:30 am
PDX
-
BKK
2 stops36h 55m
United Airlines
Wed 3/114:55 pm
BKK
-
PDX
2 stops20h 09m
United Airlines
Deal found 1/26$888
This oojo deal was found by Cheapflights users on 1/25. 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.
Thu 1/297:20 am
PDX
-
BKK
2 stops25h 20m
EVA Air
Sun 2/155:15 pm
BKK
-
PDX
2 stops32h 41m
EVA Air
Deal found 1/25$889
This United Airlines deal was found by Cheapflights users on 1/24. 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.
Mon 3/27:30 am
PDX
-
BKK
3 stops36h 55m
United Airlines
Tue 3/174:55 pm
BKK
-
PDX
2 stops45h 40m
United Airlines
Deal found 1/24$890
This oojo deal was found by Cheapflights users on 1/25. 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 11/87:40 pm
PDX
-
BKK
2 stops30h 05m
China Airlines
Sun 11/2210:55 am
BKK
-
PDX
2 stops26h 49m
China Airlines
Deal found 1/25$891
This United Airlines deal was found by Cheapflights users on 1/25. 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.
Tue 4/215:30 am
PDX
-
BKK
3 stops38h 05m
United Airlines
Mon 5/183:45 pm
BKK
-
PDX
3 stops41h 01m
United Airlines
Deal found 1/25$892
This KAYAK deal was found by Cheapflights users on 1/26. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/11:36 pm
PDX
-
BKK
2 stops31h 59m
Multiple Airlines
Tue 3/311:10 pm
BKK
-
PDX
2 stops34h 25m
Multiple Airlines
Deal found 1/26$894
This United Airlines deal was found by Cheapflights users on 1/26. 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.
Tue 1/277:45 am
PDX
-
BKK
2 stops36h 40m
United Airlines
Tue 2/34:55 pm
BKK
-
PDX
3 stops41h 01m
United Airlines
Deal found 1/26$896
This United Airlines deal was found by Cheapflights users on 1/25. 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 4/237:15 am
PDX
-
BKK
2 stops36h 20m
United Airlines
Tue 5/193:45 pm
BKK
-
PDX
3 stops41h 01m
United Airlines
Deal found 1/25$900
This oojo deal was found by Cheapflights users on 1/25. 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 3/167:57 pm
PDX
-
BKK
2 stops34h 03m
Singapore Airlines
Mon 4/66:30 pm
BKK
-
PDX
2 stops32h 05m
Singapore Airlines
Deal found 1/25$901
This Expedia deal was found by Cheapflights users on 1/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/15:35 pm
PDX
-
BKK
2 stops38h 25m
Multiple Airlines
Sun 2/82:00 pm
BKK
-
PDX
2 stops34h 15m
Multiple Airlines
Deal found 1/26$904
This oojo deal was found by Cheapflights users on 1/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/163:52 pm
PDX
-
BKK
2 stops31h 13m
China Airlines
Sun 4/52:40 am
BKK
-
PDX
2 stops44h 55m
China Airlines
Deal found 1/26$905
This oojo deal was found by Cheapflights users on 1/27. 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 2/107:20 am
PDX
-
BKK
2 stops42h 05m
Japan Airlines
Thu 4/308:05 am
BKK
-
PDX
2 stops22h 17m
Japan Airlines
Deal found 1/27$907

Find flight deals from Portland to Bangkok

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) 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 January 27, 2026.

Round-trip from

$888
(United Airlines)

One-way from

$361
(oojo)

Popular in

December

Cheapest in

August

Average price

$978
From Portland to Bangkok
Search Deals
One-way flight from Portland to Bangkok
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($113 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($52 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 27, 2026.
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

PDX - BKK

PDXBKK

Portland

Wed 5/6

5:20 am-9:35 am

3 stops38h 15m

Bangkok Suvarnabhumi

Sun 5/31

3:45 pm-4:54 pm

2 stops39h 09m

$888

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Mon 4/6

7:15 am-9:35 am

3 stops36h 20m

Bangkok Suvarnabhumi

Mon 4/20

3:45 pm-12:41 am

2 stops22h 56m

$888

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 4/22

1:39 pm-9:35 am

3 stops29h 56m

Bangkok Suvarnabhumi

Sun 5/17

3:45 pm-6:46 pm

2 stops41h 01m

$888

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 4/21

5:30 am-9:35 am

3 stops38h 05m

Bangkok Suvarnabhumi

Mon 5/18

3:45 pm-6:46 pm

3 stops41h 01m

$892

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 3/17

5:30 am-11:25 am

2 stops39h 55m

Bangkok Suvarnabhumi

Sun 4/12

3:45 pm-8:48 pm

2 stops43h 03m

$892

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 4/21

5:30 am-9:35 am

2 stops38h 05m

Bangkok Suvarnabhumi

Sun 5/17

3:45 pm-8:58 pm

2 stops43h 13m

$892

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sun 3/1

7:57 pm-11:25 am

3 stops48h 28m

Bangkok Suvarnabhumi

Thu 3/12

4:55 pm-11:04 pm

2 stops20h 09m

$896

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Thu 4/23

7:15 am-9:35 am

2 stops36h 20m

Bangkok Suvarnabhumi

Tue 5/19

3:45 pm-6:46 pm

3 stops41h 01m

$900

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Thu 4/23

1:39 pm-9:35 am

2 stops29h 56m

Bangkok Suvarnabhumi

Mon 5/18

3:45 pm-6:46 pm

3 stops41h 01m

$900

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 4/21

1:39 pm-9:35 am

3 stops29h 56m

Bangkok Suvarnabhumi

Sat 5/16

7:00 am-6:46 pm

2 stops25h 46m

$911

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 34 results
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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

How far ahead should I book a flight from Portland to Bangkok?

Use this chart to determine the optimal time to book a round-trip flight from Portland to Bangkok. Price data was last updated on January 23, 2026.

Booking 13 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portland to Bangkok. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Portland to Bangkok?

Currently, July is the cheapest month in which you can book a flight from Portland to Bangkok (average of $243). Flying from Portland to Bangkok in June is currently the most expensive (average of $900). 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.

How much does it cost to fly round-trip from Portland to Bangkok?

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 January 27, 2026.
Peruse reviews from past customers who have flown with STARLUX Airlines, Korean Air, and China Airlines from Portland to Bangkok 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.
STARLUX Airlines
8.9
Very good
268 reviews

Overall

8.9

Comfort

8.8

Crew

9.1

Food

8.6

Boarding

8.9

Entertainment

8.8

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
STARLUX Airlines
8.9
Very good
268 reviews
STARLUX Airlines
8.9
Very good
268 reviews

Overall

8.9

Comfort

8.8

Crew

9.1

Food

8.6

Boarding

8.9

Entertainment

8.8

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
Korean Air
8.4
Very good
1,188 reviews
STARLUX Airlines
8.9
Very good
268 reviews

Overall

8.9

Comfort

8.8

Crew

9.1

Food

8.6

Boarding

8.9

Entertainment

8.8

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
China Airlines
8.3
Very good
802 reviews
STARLUX Airlines
8.9
Very good
268 reviews

Overall

8.9

Comfort

8.8

Crew

9.1

Food

8.6

Boarding

8.9

Entertainment

8.8

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
United Airlines
7.4
Good
9,209 reviews
STARLUX Airlines
8.9
Very good
268 reviews

Overall

8.9

Comfort

8.8

Crew

9.1

Food

8.6

Boarding

8.9

Entertainment

8.8

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
Air Canada
7.1
Good
10,666 reviews
STARLUX Airlines
8.9
Very good
268 reviews

Overall

8.9

Comfort

8.8

Crew

9.1

Food

8.6

Boarding

8.9

Entertainment

8.8

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.

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?

    Most people fly from Portland (PDX) if they book a flight from Portland to Bangkok. On average, Portland has 0 outbound flights to Bangkok per day from 12 airlines. Portland is conveniently located just 6.0 mi from Portland’s city center.

  • How long is the flight from Portland to Bangkok?

    There are many flights that can get you from Portland to Bangkok in 38h 15m. Fly via United Airlines to get the fastest option. Portland and Bangkok are separated by a distance of 7525 mi.

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

    Delta, at $139, was found to be the cheapest airline from Portland to Bangkok.Alternate airlines to your destination round-trip include STARLUX Airlines and Singapore Airlines. These flights start at 87% lower than the current average price 3 months from now.

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

    $246 is the cheapest one-way deal found within the past few days, from Japan Airlines. You may also be able to find cheap deals on ANA and Qatar Airways, with prices starting from $302 and $387, respectively.

  • Where are the most common layover locations when flying from Portland to Bangkok?

    The most popular layover on flights from Portland to Bangkok is Seattle. Seattle is followed by Taipei City in terms of the most popular layover location on flights from Portland to Bangkok. Seoul ranks third in terms of the most popular layover location on Portland to Bangkok flights.

  • What are some popular things to do or see while on a layover in Seattle?

    Pike Place Market, Space Needle, and Seattle Waterfront are the most popular attractions in Seattle if you're in need of something to do during your layover. Pike Place Market, Space Needle, and Seattle Waterfront can be accessed by traveling approximately 11.2 mi, 12.0 mi, and 10.9 mi, respectively from Seattle/Tacoma Intl. Travelers in need of a car in Seattle can rent one for about $55 per day.

  • What are some popular points of interest to see during a layover in Taipei City?

    The majority of Taipei City visitors spend their time at Taipei 101, Shilin Night Market, and Raohe Street Night Market. Taipei 101, Shilin Night Market, and Raohe Street Night Market are located about 21.0 mi, 18.3 mi, and 21.6 mi, respectively from Taipei City Taiwan Taoyuan Intl. Travelers in need of a car in Taipei City can rent one for about $77 per day.

  • What are points of interest worth seeing during a layover in Seoul?

    The majority of Seoul visitors spend their time at Dongdaemun Market, Lotte World, and Bukchon Hanok Village. Dongdaemun Market, Lotte World, and Bukchon Hanok Village are located about 31.6 mi, 35.7 mi, and 30.6 mi, respectively from Incheon Intl. Those looking to explore during their layover in Seoul can rent a car from Incheon Intl for about $48 per day.

  • Where are the least popular layover locations for Portland to Bangkok flights?

    Flights departing from Portland and landing in Bangkok layover in San Francisco least frequently. Tokyo sees the second fewest layovers for non-direct flights flying from Portland to Bangkok. Seoul comes in third to last in terms of the least popular layover locations on Portland to Bangkok flights.

  • 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 to Bangkok?

    Currently, July is the cheapest month in which you can book a flight from Portland to Bangkok (average of $243). Flying from Portland to Bangkok in June is currently the most expensive (average of $900). 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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Top 10 airlines flying from Portland to Bangkok

Discover the top 10 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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$139Average$855FlexibilityNo cancel feeOn-timeN/A
STARLUX AirlinesCheapest$757Average$935FlexibilityNo cancel feeOn-timeN/A
Singapore AirlinesCheapest$759Average$901FlexibilityNo cancel feeOn-time81%
Japan AirlinesCheapest$776Average$969FlexibilityNo cancel feeOn-time79%
China AirlinesCheapest$781Average$899FlexibilityNo cancel feeOn-time70%
ANACheapest$785Average$983FlexibilityNo cancel feeOn-time80%
Korean AirCheapest$795Average$1,050FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$821Average$971FlexibilityNo cancel feeOn-time69%
Qatar AirwaysCheapest$864Average$874FlexibilityNo cancel feeOn-time68%
EVA AirCheapest$896Average$1,003FlexibilityNo cancel feeOn-time74%

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