What is the cheapest airline that flies from Portland to Bangkok?

Japan Airlines, STARLUX Airlines, and Philippine Airlines are the most popular carriers operating from Portland to Bangkok

What airlines fly to Bangkok?

Air Canada, STARLUX Airlines and Korean Air are the top three most popular airlines that fly to Bangkok from Portland according to our data. Air Canada is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Bangkok. Keep in mind that there are 13 different airlines that fly to Bangkok on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Portland Airport to Bangkok?

Prices for flights from Portland Airport to Bangkok are updated daily.

How many operators does momondo search for flights from Portland Airport to Bangkok?

As of October 2025, there are 13 operators available to choose from for flights from Portland Airport to Bangkok.

How old do you have to be to fly from Portland Airport to Bangkok?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to Bangkok.

What documentation or ID do you need to fly to Bangkok?

The travel and health documents required for your trip to Bangkok can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Bangkok. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$352 Cheap Flights from Portland to Bangkok in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Portland to Bangkok

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:30 pm - 12:35 pmPDX-BKK

29h 05m2 stops

5:40 pm - 10:26 pmBKK-PDX

42h 46m2 stops

$802STARLUX Airlines

Find Deal

Mon, Mar 9 - Wed, Mar 11

9:30 pm - 12:35 pmPDX-BKK

48h 05m2 stops

5:40 pm - 9:20 pmBKK-PDX

42h 40m2 stops

$808Multiple Airlines

Find Deal

Fri, Nov 28 - Sun, Dec 7

10:30 am - 1:05 pmPDX-BKK

35h 35m2 stops

2:35 am - 9:40 amBKK-PDX

46h 05m2 stops

$816China Airlines

Find Deal

Sun, Nov 2 - Sat, Nov 15

7:20 am - 4:45 pmPDX-BKK

42h 25m2 stops

5:50 pm - 9:35 amBKK-PDX

29h 45m2 stops

$817China Airlines

Find Deal

Wed, Nov 19 - Sat, Mar 14

7:38 pm - 12:35 pmPDX-BKK

25h 57m2 stops

1:45 pm - 8:43 pmBKK-PDX

21h 58m2 stops

$818STARLUX Airlines

Find Deal

Wed, Feb 4 - Tue, Feb 17

2:15 pm - 12:35 pmPDX-BKK

31h 20m2 stops

1:45 pm - 9:20 pmBKK-PDX

22h 35m2 stops

$822Multiple Airlines

Find Deal

Sun, Nov 23 - Sat, Dec 6

1:35 pm - 11:25 amPDX-BKK

30h 50m3 stops

4:55 pm - 12:30 pmBKK-PDX

34h 35m3 stops

$860United Airlines

Find Deal

Sat, Jan 31 - Fri, Feb 20

6:00 am - 11:25 amPDX-BKK

38h 25m3 stops

4:55 pm - 11:03 amBKK-PDX

33h 08m2 stops

$864United Airlines

Find Deal

Wed, Nov 12 - Wed, Dec 3

5:30 pm - 11:10 amPDX-BKK

26h 40m2 stops

2:15 am - 1:19 pmBKK-PDX

26h 04m2 stops

$899EVA Air

Find Deal

Thu, Feb 12 - Tue, Feb 24

1:38 pm - 11:10 amPDX-BKK

30h 32m2 stops

2:15 am - 1:33 pmBKK-PDX

26h 18m2 stops

$913EVA Air

Find Deal

Sun, Jan 18 - Wed, Feb 4

United Airlines flights from Portland to Bangkok

Our best United Airlines deals on Portland to Bangkok flight tickets

United Airlines

Jan 31

PDX1:35 pmPortland

30h 50m

3 stops

BKK11:25 amBangkok Suvarnabhumi

Feb 20

BKK4:55 pmBangkok Suvarnabhumi

34h 35m

3 stops

PDX12:30 pmPortland

$860

Find similar

United Airlines

Nov 12

PDX6:00 amPortland

38h 25m

3 stops

BKK11:25 amBangkok Suvarnabhumi

Dec 3

BKK4:55 pmBangkok Suvarnabhumi

33h 08m

2 stops

PDX11:03 amPortland

$864

Find similar

United Airlines

Feb 23

PDX5:45 amPortland

32h 25m

2 stops

BKK5:10 amBangkok Suvarnabhumi

Feb 26

BKK4:55 pmBangkok Suvarnabhumi

21h 04m

2 stops

PDX10:59 pmPortland

$865

Find similar

KLM flights from Portland to Bangkok

Our best KLM deals on Portland to Bangkok flight tickets

KLM

Oct 22

PDX1:15 pmPortland

30h 15m

1 stop

BKK9:30 amBangkok Suvarnabhumi

Nov 8

BKK12:15 pmBangkok Suvarnabhumi

38h 10m

1 stop

PDX11:25 amPortland

$1,867

Find similar

KLM

Oct 22

PDX1:55 pmPortland

29h 35m

2 stops

BKK9:30 amBangkok Suvarnabhumi

Nov 8

BKK12:15 pmBangkok Suvarnabhumi

38h 10m

1 stop

PDX11:25 amPortland

$1,872

Find similar

KLM

Oct 22

PDX1:15 pmPortland

30h 15m

1 stop

BKK9:30 amBangkok Suvarnabhumi

Oct 26

BKK12:15 pmBangkok Suvarnabhumi

38h 10m

1 stop

PDX12:25 pmPortland

$2,620

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Mon 3/9

5:30 pm-12:35 pm

2 stops29h 05m

Bangkok Suvarnabhumi

Wed 3/11

5:40 pm-10:26 pm

2 stops42h 46m

$802

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Fri 11/28

9:30 pm-12:35 pm

2 stops48h 05m

Bangkok Suvarnabhumi

Sun 12/7

5:40 pm-9:20 pm

2 stops42h 40m

$808

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sun 11/2

10:30 am-1:05 pm

2 stops35h 35m

Bangkok Suvarnabhumi

Sat 11/15

2:35 am-9:40 am

2 stops46h 05m

$816

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 11/19

7:20 am-4:45 pm

2 stops42h 25m

Bangkok Suvarnabhumi

Sat 3/14

5:50 pm-9:35 am

2 stops29h 45m

$817

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 2/4

7:38 pm-12:35 pm

2 stops25h 57m

Bangkok Suvarnabhumi

Tue 2/17

1:45 pm-8:43 pm

2 stops21h 58m

$818

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sun 11/23

2:15 pm-12:35 pm

2 stops31h 20m

Bangkok Suvarnabhumi

Sat 12/6

1:45 pm-9:20 pm

2 stops22h 35m

$822

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sat 1/31

1:35 pm-11:25 am

3 stops30h 50m

Bangkok Suvarnabhumi

Fri 2/20

4:55 pm-12:30 pm

3 stops34h 35m

$860

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 11/12

6:00 am-11:25 am

3 stops38h 25m

Bangkok Suvarnabhumi

Wed 12/3

4:55 pm-11:03 am

2 stops33h 08m

$864

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Thu 2/12

5:30 pm-11:10 am

2 stops26h 40m

Bangkok Suvarnabhumi

Tue 2/24

2:15 am-1:19 pm

2 stops26h 04m

$899

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sun 1/18

1:38 pm-11:10 am

2 stops30h 32m

Bangkok Suvarnabhumi

Wed 2/4

2:15 am-1:33 pm

2 stops26h 18m

$913

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portland to Bangkok

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Bangkok?

If you aren’t able to travel during the month of September, then book flights to Bangkok from Portland during October instead. Flights to Bangkok in October, while not as cheap as those in September, still average around $957.

What is the cheapest day to depart on your flight to Bangkok?

On average, the least expensive day to fly to Bangkok from Portland is on a Monday. momondo users have found tickets for Monday departures for as low as $1,127. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Portland to Bangkok on a Friday will generally be more expensive and average around $1,440. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Bangkok?

According to our data, the cheapest time of day to fly to Bangkok is in the evening. momondo users have found flights departing from Portland to Bangkok in the evening for as low as $1,137. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets at noon because they tend to be around $1,989. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to Bangkok?

You are more likely to see cheaper flights to Bangkok from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok for around $1,096 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok from Portland for as low as $934 on momondo.

Cheap Portland to Bangkok flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Bangkok

Direct flights	None

There are no direct flights from Portland to Bangkok. There are no popular flight routes from Portland to Bangkok.

Search flight deals

How far is Portland to Bangkok by plane?
The distance between Portland and Bangkok is about 7529.0 mi. 21h 15m is a normal flight duration for this route.
When did momondo last update prices for flights from Portland Airport to Bangkok?
Prices for flights from Portland Airport to Bangkok are updated daily.
How many operators does momondo search for flights from Portland Airport to Bangkok?
As of October 2025, there are 13 operators available to choose from for flights from Portland Airport to Bangkok.
How old do you have to be to fly from Portland Airport to Bangkok?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to Bangkok.
What documentation or ID do you need to fly to Bangkok?
The travel and health documents required for your trip to Bangkok can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Bangkok. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Portland to Bangkok

Compare and see reviews for airlines that fly from Portland to Bangkok with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $227	Free Cancellation	Rating 7.9 7,978 reviews	Search Delta flights
China Eastern	PriceFrom $750	Free Cancellation	Rating 7.2 169 reviews	Search China Eastern flights
Japan Airlines	PriceFrom $776	Free Cancellation	Rating 8.3 1,579 reviews	Search Japan Airlines flights
ANA	PriceFrom $793	Free Cancellation	Rating 8.4 986 reviews	Search ANA flights
Korean Air	PriceFrom $795	Free Cancellation	Rating 8.4 1,149 reviews	Search Korean Air flights
STARLUX Airlines	PriceFrom $798	Free Cancellation	Rating 8.9 219 reviews	Search STARLUX Airlines flights
United Airlines	PriceFrom $817	Free Cancellation	Rating 7.4 8,982 reviews	Search United Airlines flights
Singapore Airlines	PriceFrom $820	Free Cancellation	Rating 8.1 1,382 reviews	Search Singapore Airlines flights
China Airlines	PriceFrom $837	Free Cancellation	Rating 8.3 768 reviews	Search China Airlines flights
Qatar Airways	PriceFrom $864	Free Cancellation	Rating 7.4 3,652 reviews	Search Qatar Airways flights

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Bangkok?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Portland to Bangkok. momondo saves you time and could save you money on your trip.

Can I find flights from Portland to Bangkok with flexible booking policies on momondo?

All flight searches from Portland to Bangkok on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Portland to Bangkok?

Once all potential Portland to Bangkok flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Portland to Bangkok right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Portland to Bangkok flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Bangkok trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sat 11/15

Sat 11/22

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Thailand

Fly into one of these airports located in Bangkok

Bangkok Suvarnabhumi Airport

Bangkok Don Mueang Intl Airport

Popular cities in Thailand

Flights to Phuket Cityfrom $508

Flights to Chiang Maifrom $662

Flights to Ko Samuifrom $732

Flights to Krabifrom $783

Flights to Surat Thanifrom $812

Flights to Chiang Raifrom $887

Flights to Udon Thanifrom $915

Flights to Hat Yaifrom $941

Flights to Khon Kaenfrom $785

Flights to Ubon Ratchathanifrom $1,030

Flights to Tratfrom $957

Flights to Trangfrom $795

Cheap flights from Portland to Bangkok from $352

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Bangkok departing on 2/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Portland to Bangkok

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

United Airlines flights from Portland to Bangkok

Our best United Airlines deals on Portland to Bangkok flight tickets

KLM flights from Portland to Bangkok

Our best KLM deals on Portland to Bangkok flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Portland to Bangkok that are best for you.

See travel insights to Bangkok from

How to get the cheapest flight ticket from Portland to Bangkok

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Bangkok?

If you aren’t able to travel during the month of September, then book flights to Bangkok from Portland during October instead. Flights to Bangkok in October, while not as cheap as those in September, still average around $957.

What is the cheapest day to depart on your flight to Bangkok?

What is the cheapest time of day to depart on your flight to Bangkok?

How far in advance should I book a flight to Bangkok?

What is the cheapest airline that flies from Portland to Bangkok?

Japan Airlines, STARLUX Airlines, and Philippine Airlines are the most popular carriers operating from Portland to Bangkok

What airlines fly to Bangkok?

Cheap Portland to Bangkok flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Bangkok

Direct flights

How far is Portland to Bangkok by plane?

When did momondo last update prices for flights from Portland Airport to Bangkok?

How many operators does momondo search for flights from Portland Airport to Bangkok?

How old do you have to be to fly from Portland Airport to Bangkok?

What documentation or ID do you need to fly to Bangkok?

Best airlines flying from Portland to Bangkok

Compare and see reviews for airlines that fly from Portland to Bangkok with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Bangkok?

Can I find flights from Portland to Bangkok with flexible booking policies on momondo?

How can momondo help me find flights from Portland to Bangkok?

I’m not ready to book a flight from Portland to Bangkok right now. Can momondo alert me if prices change?

An easier way to manage your Bangkok trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Thailand

Fly into one of these airports located in Bangkok

Airports listed have a maximum distance of 15.4 mi from Bangkok