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

Qatar Airways and United Airlines are the most popular carriers 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 49% 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 July 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.

$425 Cheap Flights from Portland to Thailand in 2026

Discover deals from 900+ travel sites with momondo.

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.

2:53 pm - 12:00 pm

PDX

BKK

31h 07m

2 stops

5:50 pm - 9:25 am

BKK

PDX

29h 35m

2 stops

$943Multiple Airlines

Sat, Sep 5 - Mon, Sep 21

8:18 pm - 12:00 pm

PDX

BKK

25h 42m

2 stops

5:50 pm - 9:25 am

BKK

PDX

29h 35m

2 stops

$953STARLUX Airlines

Tue, Sep 1 - Wed, Sep 16

8:18 pm - 12:00 pm

PDX

BKK

25h 42m

2 stops

5:50 pm - 9:25 am

BKK

PDX

29h 35m

2 stops

$963STARLUX Airlines

Wed, Sep 2 - Mon, Sep 7

1:53 pm - 12:00 pm

PDX

BKK

32h 07m

2 stops

5:50 pm - 10:50 am

BKK

PDX

31h 00m

2 stops

$975Multiple Airlines

Tue, Sep 8 - Sun, Sep 13

5:00 pm - 12:00 pm

PDX

BKK

29h 00m

2 stops

1:10 pm - 9:31 am

BKK

PDX

34h 21m

2 stops

$976Multiple Airlines

Mon, Oct 5 - Tue, Oct 20

5:00 pm - 12:00 pm

PDX

BKK

29h 00m

2 stops

5:40 pm - 9:31 am

BKK

PDX

29h 51m

2 stops

$977Multiple Airlines

Thu, Oct 15 - Thu, Oct 29

6:00 pm - 12:00 pm

PDX

BKK

28h 00m

2 stops

1:45 pm - 9:25 am

BKK

PDX

34h 40m

2 stops

$978Multiple Airlines

Thu, Oct 15 - Mon, Jan 25

8:18 pm - 12:00 pm

PDX

BKK

25h 42m

2 stops

1:10 pm - 7:50 pm

BKK

PDX

20h 40m

2 stops

$984STARLUX Airlines

Wed, Sep 2 - Sun, Sep 27

10:28 am - 7:40 pm

PDX

USM

43h 12m

2 stops

11:55 am - 4:35 pm

USM

PDX

42h 40m

2 stops

$2,804Cathay Pacific

Sun, Oct 18 - Wed, Oct 21

10:28 am - 7:40 pm

PDX

USM

43h 12m

2 stops

11:55 am - 4:35 pm

USM

PDX

42h 40m

2 stops

$2,805Cathay Pacific

Sun, Oct 18 - Wed, Oct 21

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Korean Air flights from Portland to Thailand

Our best Korean Air deals on Portland to Thailand flight tickets

Korean Air

Aug 24

PDX11:22 amPortland

22h 13m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

Sep 9

BKK9:50 amBangkok Suvarnabhumi

26h 27m

2 stops

PDX10:17 pmPortland

$1,030

Korean Air

Aug 25

PDX5:35 pmPortland

30h 00m

2 stops

BKK1:35 pmBangkok Suvarnabhumi

Sep 1

BKK9:50 amBangkok Suvarnabhumi

26h 22m

2 stops

PDX10:12 pmPortland

$1,040

Korean Air

Jul 20

PDX6:30 amPortland

27h 05m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

Aug 30

BKK2:35 amBangkok Suvarnabhumi

33h 37m

2 stops

PDX10:12 pmPortland

$1,050

Delta flights from Portland to Thailand

Our best Delta deals on Portland to Thailand flight tickets

Delta

Jan 5

PDX11:10 amPortland

43h 20m

2 stops

BKK9:30 pmBangkok Suvarnabhumi

Jan 24

BKK11:15 pmBangkok Suvarnabhumi

36h 35m

2 stops

PDX8:50 pmPortland

$1,090

Delta

Aug 13

PDX5:30 amPortland

28h 05m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

Aug 26

BKK11:30 pmBangkok Suvarnabhumi

34h 14m

2 stops

PDX7:44 pmPortland

$1,091

Delta

Jul 19

PDX8:44 pmPortland

38h 21m

2 stops

BKK1:05 amBangkok Suvarnabhumi

Jul 26

BKK2:35 amBangkok Suvarnabhumi

33h 25m

2 stops

PDX10:00 pmPortland

$1,096

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sat 9/5

2:53 pm-12:00 pm

2 stops31h 07m

Bangkok Suvarnabhumi

Mon 9/21

5:50 pm-9:25 am

2 stops29h 35m

$943

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 9/1

8:18 pm-12:00 pm

2 stops25h 42m

Bangkok Suvarnabhumi

Wed 9/16

5:50 pm-9:25 am

2 stops29h 35m

$953

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 9/2

8:18 pm-12:00 pm

2 stops25h 42m

Bangkok Suvarnabhumi

Mon 9/7

5:50 pm-9:25 am

2 stops29h 35m

$963

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 9/8

1:53 pm-12:00 pm

2 stops32h 07m

Bangkok Suvarnabhumi

Sun 9/13

5:50 pm-10:50 am

2 stops31h 00m

$975

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Mon 10/5

5:00 pm-12:00 pm

2 stops29h 00m

Bangkok Suvarnabhumi

Tue 10/20

1:10 pm-9:31 am

2 stops34h 21m

$976

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Thu 10/15

5:00 pm-12:00 pm

2 stops29h 00m

Bangkok Suvarnabhumi

Thu 10/29

5:40 pm-9:31 am

2 stops29h 51m

$977

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Thu 10/15

6:00 pm-12:00 pm

2 stops28h 00m

Bangkok Suvarnabhumi

Mon 1/25

1:45 pm-9:25 am

2 stops34h 40m

$978

Quickest round-trip

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 9/2

8:18 pm-12:00 pm

2 stops25h 42m

Bangkok Suvarnabhumi

Sun 9/27

1:10 pm-7:50 pm

2 stops20h 40m

$984

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Sun 10/18

10:28 am-7:40 pm

2 stops43h 12m

Ko Samui

Wed 10/21

11:55 am-4:35 pm

2 stops42h 40m

$2,804

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Sun 10/18

10:28 am-7:40 pm

2 stops43h 12m

Ko Samui

Wed 10/21

11:55 am-4:35 pm

2 stops42h 40m

$2,805

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 January is, on average, the cheapest month to fly to Thailand from Portland, with most prices found around $99. If you are unable to visit Thailand during the month of January, then departing from Portland during the month April is also very affordable. Most momondo users find prices during this month for around $139.

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

You are more likely to see cheaper flights to Thailand from Portland when booking week ahead of your departure date. In general, you can expect to find flights to Thailand for around $1,117 when searching week 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 $960 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 00m
Direct flights	None

The fastest flight from Portland to Thailand takes 22h 00m

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

Search flight deals

Frequently asked questions about flying from Portland to Thailand

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 July 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 $99	Free Cancellation	Rating 7.8 8,463 reviews	Search Delta flights
Cathay Pacific	PriceFrom $653	Free Cancellation	Rating 7.6 1,406 reviews	Search Cathay Pacific flights
STARLUX Airlines	PriceFrom $754	Free Cancellation	Rating 8.8 359 reviews	Search STARLUX Airlines flights
Singapore Airlines	PriceFrom $759	Free Cancellation	Rating 8.2 1,572 reviews	Search Singapore Airlines flights
China Airlines	PriceFrom $773	Free Cancellation	Rating 8.3 834 reviews	Search China Airlines flights
Japan Airlines	PriceFrom $776	Free Cancellation	Rating 8.3 1,871 reviews	Search Japan Airlines flights
United Airlines	PriceFrom $822	Free Cancellation	Rating 7.4 9,981 reviews	Search United Airlines flights
Korean Air	PriceFrom $845	Free Cancellation	Rating 8.4 1,221 reviews	Search Korean Air flights
ANA	PriceFrom $890	Free Cancellation	Rating 8.3 1,271 reviews	Search ANA flights
EVA Air	PriceFrom $896	Free Cancellation	Rating 8.5 1,498 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.