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

Korean Air is the most popular carrier operating from Portland to Thailand

What airlines fly to Thailand?

Air Canada, STARLUX Airlines and Korean Air are the top three most popular airlines that fly to Thailand from Portland according to our data. Air Canada is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Thailand. Keep in mind that there are 12 different airlines that fly to Thailand 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 Thailand?

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

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

As of December 2025, there are 12 operators available to choose from for flights from Portland Airport to Thailand.

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

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 Thailand.

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

The travel and health documents required for your trip to Thailand 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 Thailand. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$348 Cheap Flights from Portland to Thailand in 2025/26

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Find the cheapest flights from Portland to Thailand

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 8:00 pm

PDX

BKK

24h 00m2 stops

8:10 pm - 1:50 pm

BKK

PDX

31h 40m2 stops

$793Singapore Airlines

Tue, Mar 31 - Tue, Apr 14

5:35 pm - 4:30 pm

PDX

BKK

31h 55m2 stops

5:40 pm - 8:47 pm

BKK

PDX

42h 07m2 stops

$811STARLUX Airlines

Sun, Jan 18 - Thu, Feb 5

9:50 am - 11:05 pm

PDX

BKK

22h 15m2 stops

10:40 am - 6:30 pm

BKK

PDX

22h 50m2 stops

$817Multiple Airlines

Mon, Feb 9 - Mon, Feb 16

7:15 am - 12:55 am

PDX

BKK

26h 40m2 stops

2:05 am - 12:42 pm

BKK

PDX

25h 37m2 stops

$821Korean Air

Thu, Feb 19 - Sun, Feb 22

5:49 pm - 12:00 pm

PDX

BKK

28h 11m2 stops

5:50 pm - 9:30 am

BKK

PDX

29h 40m2 stops

$822Multiple Airlines

Sat, Apr 18 - Sat, Apr 25

9:30 pm - 5:35 pm

PDX

HKT

53h 05m2 stops

12:20 pm - 11:42 pm

HKT

PDX

25h 22m2 stops

$901Cathay Pacific

Sun, Mar 1 - Mon, Mar 9

5:39 pm - 11:20 am

PDX

HKT

27h 41m2 stops

12:20 pm - 11:58 pm

HKT

PDX

25h 38m2 stops

$922Cathay Pacific

Tue, Mar 10 - Thu, Mar 19

10:33 am - 10:25 am

PDX

CNX

32h 52m2 stops

11:25 am - 10:46 pm

CNX

PDX

26h 21m2 stops

$922China Airlines

Mon, Jan 12 - Tue, Jan 20

10:42 am - 10:10 pm

PDX

HKT

21h 28m2 stops

11:25 pm - 10:43 pm

HKT

PDX

37h 18m2 stops

$963Korean Air

Wed, Apr 1 - Wed, Apr 15

10:48 am - 10:35 am

PDX

CNX

32h 47m2 stops

11:50 am - 9:41 pm

CNX

PDX

24h 51m2 stops

$993EVA Air

Thu, Feb 26 - Sun, Mar 8

Singapore Airlines flights from Portland to Thailand

Our best Singapore Airlines deals on Portland to Thailand flight tickets

Singapore Airlines

Mar 31

PDX6:00 amPortland

24h 00m

2 stops

BKK8:00 pmBangkok Suvarnabhumi

Apr 14

BKK8:10 pmBangkok Suvarnabhumi

31h 40m

2 stops

PDX1:50 pmPortland

$793

Find similar

Singapore Airlines

Feb 2

PDX9:30 pmPortland

31h 30m

2 stops

BKK8:00 pmBangkok Suvarnabhumi

Mar 17

BKK8:00 pmBangkok Suvarnabhumi

31h 50m

2 stops

PDX1:50 pmPortland

$823

Find similar

Singapore Airlines

Feb 10

PDX5:50 pmPortland

29h 45m

2 stops

BKK2:35 pmBangkok Suvarnabhumi

Feb 24

BKK12:00 pmBangkok Suvarnabhumi

36h 35m

2 stops

PDX9:35 amPortland

$836

Find similar

STARLUX Airlines flights from Portland to Thailand

Our best STARLUX Airlines deals on Portland to Thailand flight tickets

STARLUX Airlines

Jan 18

PDX5:35 pmPortland

31h 55m

2 stops

BKK4:30 pmBangkok Suvarnabhumi

Feb 5

BKK5:40 pmBangkok Suvarnabhumi

42h 07m

2 stops

PDX8:47 pmPortland

$811

Find similar

STARLUX Airlines

Jan 12

PDX5:35 pmPortland

31h 55m

2 stops

BKK4:30 pmBangkok Suvarnabhumi

Jan 24

BKK5:40 pmBangkok Suvarnabhumi

42h 07m

2 stops

PDX8:47 pmPortland

$826

Find similar

STARLUX Airlines

Jan 18

PDX5:35 pmPortland

31h 55m

2 stops

BKK4:30 pmBangkok Suvarnabhumi

Jan 31

BKK5:40 pmBangkok Suvarnabhumi

42h 07m

2 stops

PDX8:47 pmPortland

$830

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 3/31

6:00 am-8:00 pm

2 stops24h 00m

Bangkok Suvarnabhumi

Tue 4/14

8:10 pm-1:50 pm

2 stops31h 40m

$793

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sun 1/18

5:35 pm-4:30 pm

2 stops31h 55m

Bangkok Suvarnabhumi

Thu 2/5

5:40 pm-8:47 pm

2 stops42h 07m

$811

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Mon 2/9

9:50 am-11:05 pm

2 stops22h 15m

Bangkok Suvarnabhumi

Mon 2/16

10:40 am-6:30 pm

2 stops22h 50m

$817

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Thu 2/19

7:15 am-12:55 am

2 stops26h 40m

Bangkok Suvarnabhumi

Sun 2/22

2:05 am-12:42 pm

2 stops25h 37m

$821

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sat 4/18

5:49 pm-12:00 pm

2 stops28h 11m

Bangkok Suvarnabhumi

Sat 4/25

5:50 pm-9:30 am

2 stops29h 40m

$822

PortlandPhuket City

PDX - HKT

PDXHKT

Portland

Sun 3/1

9:30 pm-5:35 pm

2 stops53h 05m

Phuket City

Mon 3/9

12:20 pm-11:42 pm

2 stops25h 22m

$901

PortlandPhuket City

PDX - HKT

PDXHKT

Portland

Tue 3/10

5:39 pm-11:20 am

2 stops27h 41m

Phuket City

Thu 3/19

12:20 pm-11:58 pm

2 stops25h 38m

$922

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 1/12

10:33 am-10:25 am

2 stops32h 52m

Chiang Mai

Tue 1/20

11:25 am-10:46 pm

2 stops26h 21m

$922

PortlandPhuket City

PDX - HKT

PDXHKT

Portland

Wed 4/1

10:42 am-10:10 pm

2 stops21h 28m

Phuket City

Wed 4/15

11:25 pm-10:43 pm

2 stops37h 18m

$963

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 2/26

10:48 am-10:35 am

2 stops32h 47m

Chiang Mai

Sun 3/8

11:50 am-9:41 pm

2 stops24h 51m

$993

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 Thailand

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 Thailand?

The month of October is, on average, the cheapest month to fly to Thailand from Portland, with most prices found around $957. If you are unable to visit Thailand during the month of October, then departing from Portland during the month August is also very affordable. Most momondo users find prices during this month for around $958.

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

The cheapest day to depart on your flight to Thailand is on a Monday when prices can be found for as low as $1,127. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Thailand is Friday, with ticket prices averaging around $1,440.

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

Flying to Thailand from Portland in the evening is the least expensive time of day to depart. momondo users have found prices as low as $1,137 when looking at flights departing in the evening. In contrast, the most expensive time of day to depart to Thailand is at noon when prices are around $1,989.

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

You are more likely to see cheaper flights to Thailand from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Thailand for around $1,098 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Thailand from Portland for as low as $932 on momondo.

Cheap Portland to Thailand flight deals and tips

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

Fastest flight time	21h 15m
Direct flights	None

The fastest flight from Portland to Thailand takes 21h 15m

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

Search flight deals

When did momondo last update prices for flights from Portland Airport to Thailand?
Prices for flights from Portland Airport to Thailand are updated daily.
How many operators does momondo search for flights from Portland Airport to Thailand?
As of December 2025, there are 12 operators available to choose from for flights from Portland Airport to Thailand.
How old do you have to be to fly from Portland Airport to Thailand?
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 Thailand.
What documentation or ID do you need to fly to Thailand?
The travel and health documents required for your trip to Thailand 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 Thailand. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Portland to Thailand

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $202	Free Cancellation	Rating 7.9 8,014 reviews	Search Delta flights
Singapore Airlines	PriceFrom $759	Free Cancellation	Rating 8.1 1,415 reviews	Search Singapore Airlines flights
STARLUX Airlines	PriceFrom $775	Free Cancellation	Rating 8.9 248 reviews	Search STARLUX Airlines flights
Japan Airlines	PriceFrom $776	Free Cancellation	Rating 8.3 1,660 reviews	Search Japan Airlines flights
China Airlines	PriceFrom $781	Free Cancellation	Rating 8.3 792 reviews	Search China Airlines flights
ANA	PriceFrom $785	Free Cancellation	Rating 8.4 1,034 reviews	Search ANA flights
Korean Air	PriceFrom $795	Free Cancellation	Rating 8.4 1,185 reviews	Search Korean Air flights
United Airlines	PriceFrom $821	Free Cancellation	Rating 7.4 9,105 reviews	Search United Airlines flights
Qatar Airways	PriceFrom $864	Free Cancellation	Rating 7.4 3,686 reviews	Search Qatar Airways flights
EVA Air	PriceFrom $920	Free Cancellation	Rating 8.4 1,298 reviews	Search EVA Air flights

Why use momondo?

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

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

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

Flights from Portland to Thailand with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search for Portland to Thailand flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are simply researching potential flights to Thailand, momondo offers a useful price alert feature which will track prices for flights to Thailand from Portland and alert you when they change.