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

Philippine Airlines, Korean Air, and China Eastern are the most popular carriers 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.

$337 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.

1:38 pm - 4:30 pm

PDX

BKK

35h 52m2 stops

1:45 pm - 8:47 pm

BKK

PDX

22h 02m2 stops

$811STARLUX Airlines

Sun, Jan 18 - Thu, Feb 5

5:35 pm - 4:30 pm

PDX

BKK

31h 55m2 stops

5:40 pm - 8:47 pm

BKK

PDX

42h 07m2 stops

$827STARLUX Airlines

Wed, Jan 14 - Wed, Feb 4

5:39 pm - 2:05 pm

PDX

HKT

29h 26m2 stops

8:15 pm - 1:37 pm

HKT

PDX

31h 22m2 stops

$912Singapore Airlines

Mon, Mar 2 - Mon, Mar 16

2:30 pm - 5:35 pm

PDX

HKT

36h 05m2 stops

12:20 pm - 9:35 am

HKT

PDX

36h 15m2 stops

$915Cathay Pacific

Mon, Jan 26 - Mon, Feb 2

2:30 pm - 10:10 am

PDX

HKT

28h 40m2 stops

2:55 pm - 9:35 am

HKT

PDX

32h 40m2 stops

$929Singapore Airlines

Mon, Mar 2 - Thu, Mar 12

9:48 pm - 11:20 am

PDX

HKT

46h 32m2 stops

12:20 pm - 11:42 pm

HKT

PDX

25h 22m2 stops

$932Cathay Pacific

Sun, Mar 1 - Mon, Mar 9

7:10 am - 10:10 pm

PDX

HKT

24h 00m2 stops

11:40 pm - 12:44 pm

HKT

PDX

28h 04m2 stops

$959Korean Air

Mon, Jan 19 - Wed, Jan 28

10:42 am - 10:10 pm

PDX

HKT

21h 28m2 stops

11:25 pm - 5:03 pm

HKT

PDX

31h 38m2 stops

$963Korean Air

Wed, Apr 1 - Wed, Apr 15

9:30 pm - 10:35 am

PDX

CNX

46h 05m2 stops

11:50 am - 9:42 am

CNX

PDX

36h 52m2 stops

$980EVA Air

Mon, Jan 12 - Mon, Feb 16

2:47 pm - 10:35 am

PDX

CNX

28h 48m2 stops

11:50 am - 9:41 pm

CNX

PDX

24h 51m2 stops

$993EVA Air

Thu, Feb 26 - Sun, Mar 8

Delta flights from Portland to Thailand

Our best Delta deals on Portland to Thailand flight tickets

Delta

Mar 4

PDX5:30 amPortland

26h 50m

2 stops

BKK11:20 pmBangkok Suvarnabhumi

Mar 16

BKK2:05 amBangkok Suvarnabhumi

28h 51m

2 stops

PDX4:56 pmPortland

$858

Find similar

Delta

Jan 30

PDX7:10 amPortland

26h 35m

2 stops

BKK12:45 amBangkok Suvarnabhumi

Feb 15

BKK12:55 amBangkok Suvarnabhumi

32h 53m

2 stops

PDX6:48 pmPortland

$888

Find similar

Delta

Feb 28

PDX9:20 amPortland

23h 00m

2 stops

BKK11:20 pmBangkok Suvarnabhumi

Mar 18

BKK9:40 amBangkok Suvarnabhumi

21h 16m

2 stops

PDX4:56 pmPortland

$898

Find similar

Korean Air flights from Portland to Thailand

Our best Korean Air deals on Portland to Thailand flight tickets

Korean Air

Jan 29

PDX7:10 amPortland

39h 15m

2 stops

BKK1:25 pmBangkok Suvarnabhumi

Feb 15

BKK9:30 pmBangkok Suvarnabhumi

30h 12m

2 stops

PDX12:42 pmPortland

$859

Find similar

Korean Air

Mar 5

PDX7:15 amPortland

23h 15m

2 stops

BKK9:30 pmBangkok Suvarnabhumi

Mar 17

BKK2:05 amBangkok Suvarnabhumi

28h 51m

2 stops

PDX4:56 pmPortland

$863

Find similar

Korean Air

Jan 31

PDX7:10 amPortland

26h 35m

2 stops

BKK12:45 amBangkok Suvarnabhumi

Feb 17

BKK2:05 amBangkok Suvarnabhumi

31h 43m

2 stops

PDX6:48 pmPortland

$893

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sun 1/18

1:38 pm-4:30 pm

2 stops35h 52m

Bangkok Suvarnabhumi

Thu 2/5

1:45 pm-8:47 pm

2 stops22h 02m

$811

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 1/14

5:35 pm-4:30 pm

2 stops31h 55m

Bangkok Suvarnabhumi

Wed 2/4

5:40 pm-8:47 pm

2 stops42h 07m

$827

PortlandPhuket City

PDX - HKT

PDXHKT

Portland

Mon 3/2

5:39 pm-2:05 pm

2 stops29h 26m

Phuket City

Mon 3/16

8:15 pm-1:37 pm

2 stops31h 22m

$912

PortlandPhuket City

PDX - HKT

PDXHKT

Portland

Mon 1/26

2:30 pm-5:35 pm

2 stops36h 05m

Phuket City

Mon 2/2

12:20 pm-9:35 am

2 stops36h 15m

$915

PortlandPhuket City

PDX - HKT

PDXHKT

Portland

Mon 3/2

2:30 pm-10:10 am

2 stops28h 40m

Phuket City

Thu 3/12

2:55 pm-9:35 am

2 stops32h 40m

$929

PortlandPhuket City

PDX - HKT

PDXHKT

Portland

Sun 3/1

9:48 pm-11:20 am

2 stops46h 32m

Phuket City

Mon 3/9

12:20 pm-11:42 pm

2 stops25h 22m

$932

PortlandPhuket City

PDX - HKT

PDXHKT

Portland

Mon 1/19

7:10 am-10:10 pm

2 stops24h 00m

Phuket City

Wed 1/28

11:40 pm-12:44 pm

2 stops28h 04m

$959

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-5:03 pm

2 stops31h 38m

$963

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 1/12

9:30 pm-10:35 am

2 stops46h 05m

Chiang Mai

Mon 2/16

11:50 am-9:42 am

2 stops36h 52m

$980

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 2/26

2:47 pm-10:35 am

2 stops28h 48m

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 $1,097 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 28m
Direct flights	None

The fastest flight from Portland to Thailand takes 21h 28m

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 $192	Free Cancellation	Rating 7.9 8,019 reviews	Search Delta flights
Singapore Airlines	PriceFrom $759	Free Cancellation	Rating 8.1 1,421 reviews	Search Singapore Airlines flights
STARLUX Airlines	PriceFrom $774	Free Cancellation	Rating 8.9 250 reviews	Search STARLUX Airlines flights
Japan Airlines	PriceFrom $776	Free Cancellation	Rating 8.3 1,662 reviews	Search Japan Airlines flights
China Airlines	PriceFrom $781	Free Cancellation	Rating 8.3 793 reviews	Search China Airlines flights
ANA	PriceFrom $785	Free Cancellation	Rating 8.4 1,049 reviews	Search ANA flights
Korean Air	PriceFrom $795	Free Cancellation	Rating 8.4 1,184 reviews	Search Korean Air flights
United Airlines	PriceFrom $817	Free Cancellation	Rating 7.4 9,113 reviews	Search United Airlines flights
Qatar Airways	PriceFrom $864	Free Cancellation	Rating 7.4 3,697 reviews	Search Qatar Airways flights
EVA Air	PriceFrom $915	Free Cancellation	Rating 8.4 1,304 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.