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

United Airlines is the most popular carrier 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 48% of people opting to fly with this airline when traveling to Bangkok. Keep in mind that there are 12 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 November 2025, there are 12 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.

$351 Cheap Flights from Portland to Bangkok in 2025/26

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Find the cheapest flights from Portland to Bangkok

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

9:19 pm - 8:00 pmPDX-BKK

31h 41m2 stops

12:00 pm - 9:35 amBKK-PDX

35h 35m2 stops

$790Singapore Airlines

Find Deal

Wed, Feb 25 - Sun, Mar 15

9:19 pm - 8:00 pmPDX-BKK

31h 41m2 stops

6:10 pm - 1:19 pmBKK-PDX

33h 09m2 stops

$794Singapore Airlines

Find Deal

Wed, Mar 4 - Tue, Mar 17

6:00 am - 8:00 pmPDX-BKK

24h 00m2 stops

6:30 pm - 4:28 pmBKK-PDX

35h 58m2 stops

$799Singapore Airlines

Find Deal

Tue, Mar 31 - Tue, Apr 14

9:19 pm - 8:00 pmPDX-BKK

31h 41m2 stops

9:10 pm - 10:46 amBKK-PDX

28h 36m2 stops

$803Singapore Airlines

Find Deal

Thu, Feb 19 - Wed, Mar 4

5:39 pm - 2:35 pmPDX-BKK

29h 56m2 stops

8:00 pm - 12:44 pmBKK-PDX

30h 44m2 stops

$811Singapore Airlines

Find Deal

Sun, Mar 1 - Wed, Mar 11

5:50 pm - 1:05 pmPDX-BKK

28h 15m2 stops

10:55 am - 9:35 amBKK-PDX

37h 40m2 stops

$815Multiple Airlines

Find Deal

Tue, Jan 13 - Wed, Jan 28

7:57 pm - 9:50 amPDX-BKK

22h 53m2 stops

10:55 am - 9:35 amBKK-PDX

37h 40m2 stops

$816Multiple Airlines

Find Deal

Sun, Feb 15 - Tue, Mar 3

2:50 pm - 9:50 amPDX-BKK

29h 00m2 stops

2:40 am - 9:32 amBKK-PDX

44h 52m2 stops

$820Multiple Airlines

Find Deal

Thu, Mar 26 - Wed, Apr 22

5:30 pm - 12:10 pmPDX-BKK

28h 40m2 stops

1:20 pm - 9:32 amBKK-PDX

34h 12m2 stops

$821Multiple Airlines

Find Deal

Mon, Mar 30 - Tue, Apr 14

9:30 pm - 9:50 amPDX-BKK

46h 20m2 stops

2:40 am - 9:32 amBKK-PDX

44h 52m2 stops

$822Multiple Airlines

Find Deal

Mon, Mar 23 - Wed, Apr 22

Air Canada flights from Portland to Bangkok

Our best Air Canada deals on Portland to Bangkok flight tickets

Air Canada

Nov 24

PDX3:15 pmPortland

24h 15m

1 stop

BKK6:30 amBangkok Suvarnabhumi

Dec 24

BKK8:15 amBangkok Suvarnabhumi

16h 00m

1 stop

PDX9:15 amPortland

$1,078

Find similar

Air Canada

Nov 24

PDX3:15 pmPortland

24h 15m

1 stop

BKK6:30 amBangkok Suvarnabhumi

Dec 24

BKK8:15 amBangkok Suvarnabhumi

21h 25m

1 stop

PDX2:40 pmPortland

$1,119

Find similar

Air Canada

Nov 29

PDX3:15 pmPortland

40h 15m

2 stops

BKK10:30 pmBangkok Suvarnabhumi

Dec 10

BKK8:15 amBangkok Suvarnabhumi

16h 00m

1 stop

PDX9:15 amPortland

$1,154

Find similar

EVA Air flights from Portland to Bangkok

Our best EVA Air deals on Portland to Bangkok flight tickets

EVA Air

Nov 24

PDX7:01 amPortland

27h 24m

2 stops

BKK1:25 amBangkok Suvarnabhumi

Dec 23

BKK2:15 amBangkok Suvarnabhumi

26h 29m

2 stops

PDX1:44 pmPortland

$935

Find similar

EVA Air

Nov 24

PDX7:01 amPortland

27h 24m

2 stops

BKK1:25 amBangkok Suvarnabhumi

Dec 23

BKK2:15 amBangkok Suvarnabhumi

26h 29m

2 stops

PDX1:44 pmPortland

$936

Find similar

EVA Air

Nov 24

PDX7:01 amPortland

25h 39m

2 stops

BKK11:40 pmBangkok Suvarnabhumi

Dec 22

BKK2:15 amBangkok Suvarnabhumi

33h 56m

2 stops

PDX9:11 pmPortland

$987

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 2/25

9:19 pm-8:00 pm

2 stops31h 41m

Bangkok Suvarnabhumi

Sun 3/15

12:00 pm-9:35 am

2 stops35h 35m

$790

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 3/4

9:19 pm-8:00 pm

2 stops31h 41m

Bangkok Suvarnabhumi

Tue 3/17

6:10 pm-1:19 pm

2 stops33h 09m

$794

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 3/31

6:00 am-8:00 pm

2 stops24h 00m

Bangkok Suvarnabhumi

Tue 4/14

6:30 pm-4:28 pm

2 stops35h 58m

$799

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Thu 2/19

9:19 pm-8:00 pm

2 stops31h 41m

Bangkok Suvarnabhumi

Wed 3/4

9:10 pm-10:46 am

2 stops28h 36m

$803

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sun 3/1

5:39 pm-2:35 pm

2 stops29h 56m

Bangkok Suvarnabhumi

Wed 3/11

8:00 pm-12:44 pm

2 stops30h 44m

$811

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 1/13

5:50 pm-1:05 pm

2 stops28h 15m

Bangkok Suvarnabhumi

Wed 1/28

10:55 am-9:35 am

2 stops37h 40m

$815

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sun 2/15

7:57 pm-9:50 am

2 stops22h 53m

Bangkok Suvarnabhumi

Tue 3/3

10:55 am-9:35 am

2 stops37h 40m

$816

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Thu 3/26

2:50 pm-9:50 am

2 stops29h 00m

Bangkok Suvarnabhumi

Wed 4/22

2:40 am-9:32 am

2 stops44h 52m

$820

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Mon 3/30

5:30 pm-12:10 pm

2 stops28h 40m

Bangkok Suvarnabhumi

Tue 4/14

1:20 pm-9:32 am

2 stops34h 12m

$821

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Mon 3/23

9:30 pm-9:50 am

2 stops46h 20m

Bangkok Suvarnabhumi

Wed 4/22

2:40 am-9:32 am

2 stops44h 52m

$822

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 $1,093 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 $925 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 November 2025, there are 12 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 8,003 reviews	Search Delta flights
Japan Airlines	PriceFrom $776	Free Cancellation	Rating 8.3 1,623 reviews	Search Japan Airlines flights
STARLUX Airlines	PriceFrom $777	Free Cancellation	Rating 8.9 230 reviews	Search STARLUX Airlines flights
ANA	PriceFrom $793	Free Cancellation	Rating 8.4 1,007 reviews	Search ANA flights
Korean Air	PriceFrom $795	Free Cancellation	Rating 8.4 1,167 reviews	Search Korean Air flights
United Airlines	PriceFrom $817	Free Cancellation	Rating 7.4 9,019 reviews	Search United Airlines flights
Singapore Airlines	PriceFrom $820	Free Cancellation	Rating 8.1 1,406 reviews	Search Singapore Airlines flights
China Airlines	PriceFrom $835	Free Cancellation	Rating 8.3 781 reviews	Search China Airlines flights
Qatar Airways	PriceFrom $864	Free Cancellation	Rating 7.4 3,664 reviews	Search Qatar Airways flights
Air Canada	PriceFrom $928	Free Cancellation	Rating 7.1 10,462 reviews	Search Air Canada 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.