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

China Airlines is the most popular carrier operating from Portland to Thailand

What airlines fly to Thailand?

Air Canada, STARLUX Airlines and United Airlines 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 11 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 March 2026, there are 11 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.

$387 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.

7:00 am - 9:45 am

PDX

BKK

36h 45m

2 stops

2:40 am - 10:25 am

BKK

PDX

45h 45m

2 stops

$826Multiple Airlines

Sun, Sep 13 - Fri, Oct 2

5:55 pm - 10:20 am

PDX

CNX

26h 25m

2 stops

11:20 am - 9:46 am

CNX

PDX

36h 26m

2 stops

$828Multiple Airlines

Tue, Sep 1 - Thu, Sep 10

2:50 pm - 12:10 pm

PDX

BKK

31h 20m

2 stops

2:40 am - 9:24 am

BKK

PDX

44h 44m

2 stops

$831Multiple Airlines

Wed, May 6 - Mon, Jun 8

5:49 pm - 9:45 am

PDX

BKK

25h 56m

2 stops

2:40 am - 9:47 am

BKK

PDX

45h 07m

2 stops

$838Multiple Airlines

Wed, May 6 - Sun, May 17

2:50 pm - 4:20 pm

PDX

BKK

35h 30m

2 stops

1:20 pm - 9:29 am

BKK

PDX

34h 09m

2 stops

$847China Airlines

Wed, May 6 - Mon, May 18

5:35 pm - 10:20 am

PDX

CNX

26h 45m

2 stops

11:20 am - 8:31 pm

CNX

PDX

47h 11m

2 stops

$951China Airlines

Sat, Aug 15 - Sun, Aug 30

1:52 pm - 10:25 am

PDX

CNX

30h 33m

2 stops

11:35 am - 8:01 am

CNX

PDX

34h 26m

2 stops

$981EVA Air

Thu, Apr 23 - Thu, May 7

5:00 am - 7:15 pm

PDX

HKT

24h 15m

2 stops

6:00 pm - 12:22 pm

HKT

PDX

32h 22m

2 stops

$1,038Singapore Airlines

Tue, Aug 4 - Wed, Sep 2

10:30 am - 7:40 pm

PDX

USM

43h 10m

2 stops

11:55 am - 9:50 am

USM

PDX

35h 55m

2 stops

$1,539Cathay Pacific

Sun, Apr 12 - Sun, Apr 19

10:30 am - 7:40 pm

PDX

USM

43h 10m

2 stops

11:55 am - 4:30 pm

USM

PDX

42h 35m

2 stops

$1,563Cathay Pacific

Sun, Apr 12 - Sun, Apr 19

EVA Air flights from Portland to Thailand

Our best EVA Air deals on Portland to Thailand flight tickets

EVA Air

Apr 6

PDX9:30 pmPortland

36h 00m

2 stops

BKK11:30 pmBangkok Suvarnabhumi

May 7

BKK3:10 pmBangkok Suvarnabhumi

21h 43m

2 stops

PDX10:53 pmPortland

$933

EVA Air

Mar 30

PDX7:05 amPortland

26h 25m

2 stops

BKK11:30 pmBangkok Suvarnabhumi

Apr 29

BKK1:35 amBangkok Suvarnabhumi

25h 51m

2 stops

PDX1:26 pmPortland

$934

EVA Air

Apr 13

PDX5:45 pmPortland

27h 10m

2 stops

BKK10:55 amBangkok Suvarnabhumi

Apr 20

BKK3:10 pmBangkok Suvarnabhumi

36h 27m

2 stops

PDX1:37 pmPortland

$963

China Airlines flights from Portland to Thailand

Our best China Airlines deals on Portland to Thailand flight tickets

China Airlines

May 6

PDX2:50 pmPortland

35h 30m

2 stops

BKK4:20 pmBangkok Suvarnabhumi

May 18

BKK1:20 pmBangkok Suvarnabhumi

34h 09m

2 stops

PDX9:29 amPortland

$847

China Airlines

Apr 13

PDX1:35 pmPortland

30h 10m

2 stops

BKK9:45 amBangkok Suvarnabhumi

May 15

BKK5:30 pmBangkok Suvarnabhumi

30h 17m

2 stops

PDX9:47 amPortland

$864

China Airlines

May 12

PDX2:50 pmPortland

35h 30m

2 stops

BKK4:20 pmBangkok Suvarnabhumi

Jun 8

BKK5:30 pmBangkok Suvarnabhumi

30h 17m

2 stops

PDX9:47 amPortland

$874

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sun 9/13

7:00 am-9:45 am

2 stops36h 45m

Bangkok Suvarnabhumi

Fri 10/2

2:40 am-10:25 am

2 stops45h 45m

$826

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 9/1

5:55 pm-10:20 am

2 stops26h 25m

Chiang Mai

Thu 9/10

11:20 am-9:46 am

2 stops36h 26m

$828

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 5/6

2:50 pm-12:10 pm

2 stops31h 20m

Bangkok Suvarnabhumi

Mon 6/8

2:40 am-9:24 am

2 stops44h 44m

$831

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 5/6

5:49 pm-9:45 am

2 stops25h 56m

Bangkok Suvarnabhumi

Sun 5/17

2:40 am-9:47 am

2 stops45h 07m

$838

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 5/6

2:50 pm-4:20 pm

2 stops35h 30m

Bangkok Suvarnabhumi

Mon 5/18

1:20 pm-9:29 am

2 stops34h 09m

$847

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 8/15

5:35 pm-10:20 am

2 stops26h 45m

Chiang Mai

Sun 8/30

11:20 am-8:31 pm

2 stops47h 11m

$951

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 4/23

1:52 pm-10:25 am

2 stops30h 33m

Chiang Mai

Thu 5/7

11:35 am-8:01 am

2 stops34h 26m

$981

Quickest round-trip

PortlandPhuket City

PDX - HKT

PDXHKT

Portland

Tue 8/4

5:00 am-7:15 pm

2 stops24h 15m

Phuket City

Wed 9/2

6:00 pm-12:22 pm

2 stops32h 22m

$1,038

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Sun 4/12

10:30 am-7:40 pm

2 stops43h 10m

Ko Samui

Sun 4/19

11:55 am-9:50 am

2 stops35h 55m

$1,539

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Sun 4/12

10:30 am-7:40 pm

2 stops43h 10m

Ko Samui

Sun 4/19

11:55 am-4:30 pm

2 stops42h 35m

$1,563

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 September is, on average, the cheapest month to fly to Thailand from Portland, with most prices found around $904. If you are unable to visit Thailand during the month of September, then departing from Portland during the month March is also very affordable. Most momondo users find prices during this month for around $927.

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 $1,060 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 $929 on momondo.

Can stopping save me money on Portland to Thailand flights?

You could potentially save up to 16% on your flight if you consider stops on a Portland to Thailand flight.

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	22h 15m
Direct flights	None

The fastest flight from Portland to Thailand takes 22h 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 March 2026, there are 11 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 8,288 reviews	Search Delta flights
Cathay Pacific	PriceFrom $669	Free Cancellation	Rating 7.6 1,214 reviews	Search Cathay Pacific flights
Singapore Airlines	PriceFrom $759	Free Cancellation	Rating 8.2 1,480 reviews	Search Singapore Airlines flights
STARLUX Airlines	PriceFrom $770	Free Cancellation	Rating 8.9 285 reviews	Search STARLUX Airlines flights
Japan Airlines	PriceFrom $776	Free Cancellation	Rating 8.3 1,740 reviews	Search Japan Airlines flights
China Airlines	PriceFrom $781	Free Cancellation	Rating 8.3 814 reviews	Search China Airlines flights
ANA	PriceFrom $785	Free Cancellation	Rating 8.4 1,129 reviews	Search ANA flights
Korean Air	PriceFrom $795	Free Cancellation	Rating 8.4 1,202 reviews	Search Korean Air flights
United Airlines	PriceFrom $821	Free Cancellation	Rating 7.4 9,437 reviews	Search United Airlines flights
EVA Air	PriceFrom $896	Free Cancellation	Rating 8.4 1,377 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.