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

Cathay Pacific 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 January 2026, 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.

$358 Cheap Flights from Portland to Thailand in 2026

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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.

3:52 pm - 3:55 pm

PDX

CNX

33h 03m

2 stops

4:55 pm - 10:41 pm

CNX

PDX

43h 46m

2 stops

$878STARLUX Airlines

Thu, Mar 5 - Thu, Mar 12

7:20 am - 5:05 am

PDX

BKK

30h 45m

2 stops

8:05 am - 4:44 pm

BKK

PDX

23h 39m

2 stops

$889Japan Airlines

Mon, Jan 26 - Wed, Feb 4

7:45 am - 11:25 am

PDX

BKK

36h 40m

2 stops

4:55 pm - 2:46 pm

BKK

PDX

36h 51m

2 stops

$891United Airlines

Wed, Jan 28 - Mon, Feb 2

7:51 pm - 12:20 am

PDX

BKK

37h 29m

2 stops

4:55 pm - 6:55 pm

BKK

PDX

41h 00m

2 stops

$892United Airlines

Mon, Jan 26 - Sun, Mar 1

7:20 am - 4:25 pm

PDX

BKK

42h 05m

2 stops

8:05 am - 4:44 pm

BKK

PDX

23h 39m

2 stops

$893Japan Airlines

Thu, Jan 29 - Wed, Feb 4

3:52 pm - 1:05 pm

PDX

BKK

31h 13m

2 stops

2:40 am - 9:35 am

BKK

PDX

44h 55m

2 stops

$905China Airlines

Mon, Mar 16 - Sun, Apr 5

2:45 pm - 10:20 am

PDX

CNX

29h 35m

2 stops

11:20 am - 9:38 am

CNX

PDX

36h 18m

2 stops

$931China Airlines

Sat, Apr 25 - Sun, May 10

2:47 pm - 10:35 am

PDX

CNX

28h 48m

2 stops

11:50 am - 7:49 am

CNX

PDX

34h 59m

2 stops

$1,000EVA Air

Thu, Feb 26 - Sun, Mar 8

2:55 pm - 5:20 pm

PDX

HKT

36h 25m

2 stops

6:20 pm - 9:38 am

HKT

PDX

29h 18m

2 stops

$1,037Cathay Pacific

Sat, Apr 25 - Sun, May 3

5:49 pm - 5:20 pm

PDX

HKT

33h 31m

2 stops

11:50 am - 4:30 pm

HKT

PDX

42h 40m

2 stops

$1,047Cathay Pacific

Wed, Apr 1 - Wed, Apr 15

Japan Airlines flights from Portland to Thailand

Our best Japan Airlines deals on Portland to Thailand flight tickets

Japan Airlines

Jan 26

PDX7:20 amPortland

30h 45m

2 stops

BKK5:05 amBangkok Suvarnabhumi

Feb 4

BKK8:05 amBangkok Suvarnabhumi

23h 39m

2 stops

PDX4:44 pmPortland

$889

Japan Airlines

Jan 29

PDX7:20 amPortland

42h 05m

2 stops

BKK4:25 pmBangkok Suvarnabhumi

Feb 4

BKK8:05 amBangkok Suvarnabhumi

23h 39m

2 stops

PDX4:44 pmPortland

$893

Japan Airlines

Jan 25

PDX6:22 pmPortland

43h 38m

2 stops

BKK5:00 amBangkok Suvarnabhumi

Feb 4

BKK8:05 amBangkok Suvarnabhumi

23h 39m

2 stops

PDX4:44 pmPortland

$902

EVA Air flights from Portland to Thailand

Our best EVA Air deals on Portland to Thailand flight tickets

EVA Air

Feb 18

PDX7:05 amPortland

27h 20m

2 stops

BKK1:25 amBangkok Suvarnabhumi

Feb 24

BKK2:15 amBangkok Suvarnabhumi

26h 22m

2 stops

PDX1:37 pmPortland

$889

EVA Air

Feb 10

PDX7:20 amPortland

25h 20m

2 stops

BKK11:40 pmBangkok Suvarnabhumi

Apr 29

BKK1:35 amBangkok Suvarnabhumi

25h 51m

2 stops

PDX1:26 pmPortland

$907

EVA Air

Feb 10

PDX7:20 amPortland

25h 20m

2 stops

BKK11:40 pmBangkok Suvarnabhumi

Feb 23

BKK2:15 amBangkok Suvarnabhumi

26h 10m

2 stops

PDX1:25 pmPortland

$937

Fly from

Fly to

Route

Depart

Return

Price

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 3/5

3:52 pm-3:55 pm

2 stops33h 03m

Chiang Mai

Thu 3/12

4:55 pm-10:41 pm

2 stops43h 46m

$878

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Mon 1/26

7:20 am-5:05 am

2 stops30h 45m

Bangkok Suvarnabhumi

Wed 2/4

8:05 am-4:44 pm

2 stops23h 39m

$889

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 1/28

7:45 am-11:25 am

2 stops36h 40m

Bangkok Suvarnabhumi

Mon 2/2

4:55 pm-2:46 pm

2 stops36h 51m

$891

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Mon 1/26

7:51 pm-12:20 am

2 stops37h 29m

Bangkok Suvarnabhumi

Sun 3/1

4:55 pm-6:55 pm

2 stops41h 00m

$892

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Thu 1/29

7:20 am-4:25 pm

2 stops42h 05m

Bangkok Suvarnabhumi

Wed 2/4

8:05 am-4:44 pm

2 stops23h 39m

$893

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Mon 3/16

3:52 pm-1:05 pm

2 stops31h 13m

Bangkok Suvarnabhumi

Sun 4/5

2:40 am-9:35 am

2 stops44h 55m

$905

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 4/25

2:45 pm-10:20 am

2 stops29h 35m

Chiang Mai

Sun 5/10

11:20 am-9:38 am

2 stops36h 18m

$931

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-7:49 am

2 stops34h 59m

$1,000

PortlandPhuket City

PDX - HKT

PDXHKT

Portland

Sat 4/25

2:55 pm-5:20 pm

2 stops36h 25m

Phuket City

Sun 5/3

6:20 pm-9:38 am

2 stops29h 18m

$1,037

PortlandPhuket City

PDX - HKT

PDXHKT

Portland

Wed 4/1

5:49 pm-5:20 pm

2 stops33h 31m

Phuket City

Wed 4/15

11:50 am-4:30 pm

2 stops42h 40m

$1,047

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 August is, on average, the cheapest month to fly to Thailand from Portland, with most prices found around $953. If you are unable to visit Thailand during the month of August, then departing from Portland during the month October is also very affordable. Most momondo users find prices during this month for around $958.

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 $1,090 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 $931 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 January 2026, 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 $139	Free Cancellation	Rating 7.9 8,088 reviews	Search Delta flights
Singapore Airlines	PriceFrom $759	Free Cancellation	Rating 8.1 1,434 reviews	Search Singapore Airlines flights
STARLUX Airlines	PriceFrom $772	Free Cancellation	Rating 8.9 268 reviews	Search STARLUX Airlines flights
Japan Airlines	PriceFrom $776	Free Cancellation	Rating 8.3 1,688 reviews	Search Japan Airlines flights
China Airlines	PriceFrom $781	Free Cancellation	Rating 8.3 799 reviews	Search China Airlines flights
ANA	PriceFrom $785	Free Cancellation	Rating 8.4 1,076 reviews	Search ANA flights
Korean Air	PriceFrom $795	Free Cancellation	Rating 8.4 1,187 reviews	Search Korean Air flights
United Airlines	PriceFrom $817	Free Cancellation	Rating 7.4 9,191 reviews	Search United Airlines flights
Qatar Airways	PriceFrom $864	Free Cancellation	Rating 7.4 3,718 reviews	Search Qatar Airways flights
EVA Air	PriceFrom $896	Free Cancellation	Rating 8.4 1,327 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.