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

United Airlines and Qatar Airways 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 38% 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 February 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.

$331 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.

8:30 pm - 10:20 am

PDX

CNX

23h 50m

2 stops

11:20 am - 11:04 pm

CNX

PDX

25h 44m

2 stops

$807Multiple Airlines

Mon, May 4 - Mon, May 18

5:50 pm - 11:20 am

PDX

HKT

27h 30m

2 stops

6:35 pm - 9:42 am

HKT

PDX

29h 07m

2 stops

$820Multiple Airlines

Mon, Mar 9 - Mon, Mar 16

5:50 pm - 11:20 am

PDX

HKT

27h 30m

2 stops

6:35 pm - 9:42 am

HKT

PDX

29h 07m

2 stops

$824Multiple Airlines

Mon, Mar 9 - Mon, Mar 16

1:52 pm - 9:45 am

PDX

BKK

29h 53m

2 stops

10:50 am - 9:47 am

BKK

PDX

36h 57m

2 stops

$838China Airlines

Sun, May 10 - Sat, May 23

5:50 pm - 11:20 am

PDX

HKT

27h 30m

2 stops

12:20 pm - 9:50 am

HKT

PDX

35h 30m

2 stops

$840Cathay Pacific

Mon, Mar 9 - Tue, Mar 17

7:05 pm - 4:40 pm

PDX

BKK

31h 35m

2 stops

1:10 pm - 12:10 am

BKK

PDX

25h 00m

2 stops

$844STARLUX Airlines

Fri, Aug 14 - Sun, Aug 30

8:27 pm - 12:00 pm

PDX

BKK

25h 33m

2 stops

1:10 pm - 7:34 pm

BKK

PDX

20h 24m

2 stops

$849STARLUX Airlines

Tue, Apr 21 - Sun, May 3

5:30 am - 4:35 am

PDX

BKK

33h 05m

3 stops

9:35 am - 12:53 am

BKK

PDX

29h 18m

2 stops

$862United Airlines

Thu, Aug 20 - Wed, Sep 2

2:37 pm - 10:20 am

PDX

CNX

29h 43m

2 stops

11:20 am - 9:38 am

CNX

PDX

36h 18m

2 stops

$908China Airlines

Mon, Apr 20 - Mon, May 4

7:05 am - 11:20 am

PDX

HKT

38h 15m

2 stops

12:20 pm - 4:30 pm

HKT

PDX

42h 10m

2 stops

$969Cathay Pacific

Sun, Mar 8 - Mon, Mar 23

STARLUX Airlines flights from Portland to Thailand

Our best STARLUX Airlines deals on Portland to Thailand flight tickets

STARLUX Airlines

Aug 14

PDX7:05 pmPortland

31h 35m

2 stops

BKK4:40 pmBangkok Suvarnabhumi

Aug 30

BKK1:10 pmBangkok Suvarnabhumi

25h 00m

2 stops

PDX12:10 amPortland

$844

STARLUX Airlines

Mar 1

PDX9:48 pmPortland

51h 42m

2 stops

BKK4:30 pmBangkok Suvarnabhumi

Mar 12

BKK5:40 pmBangkok Suvarnabhumi

30h 02m

2 stops

PDX9:42 amPortland

$848

STARLUX Airlines

Apr 21

PDX8:27 pmPortland

25h 33m

2 stops

BKK12:00 pmBangkok Suvarnabhumi

May 3

BKK1:10 pmBangkok Suvarnabhumi

20h 24m

2 stops

PDX7:34 pmPortland

$849

United Airlines flights from Portland to Thailand

Our best United Airlines deals on Portland to Thailand flight tickets

United Airlines

Aug 20

PDX5:30 amPortland

33h 05m

3 stops

BKK4:35 amBangkok Suvarnabhumi

Sep 2

BKK9:35 amBangkok Suvarnabhumi

29h 18m

2 stops

PDX12:53 amPortland

$862

United Airlines

Apr 20

PDX7:15 amPortland

31h 20m

2 stops

BKK4:35 amBangkok Suvarnabhumi

May 3

BKK9:35 amBangkok Suvarnabhumi

44h 58m

2 stops

PDX4:33 pmPortland

$863

United Airlines

Aug 20

PDX5:30 amPortland

33h 05m

3 stops

BKK4:35 amBangkok Suvarnabhumi

Aug 31

BKK7:00 amBangkok Suvarnabhumi

31h 53m

2 stops

PDX12:53 amPortland

$865

Fly from

Fly to

Route

Depart

Return

Price

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 5/4

8:30 pm-10:20 am

2 stops23h 50m

Chiang Mai

Mon 5/18

11:20 am-11:04 pm

2 stops25h 44m

$807

PortlandPhuket City

PDX - HKT

PDXHKT

Portland

Mon 3/9

5:50 pm-11:20 am

2 stops27h 30m

Phuket City

Mon 3/16

6:35 pm-9:42 am

2 stops29h 07m

$820

PortlandPhuket City

PDX - HKT

PDXHKT

Portland

Mon 3/9

5:50 pm-11:20 am

2 stops27h 30m

Phuket City

Mon 3/16

6:35 pm-9:42 am

2 stops29h 07m

$824

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sun 5/10

1:52 pm-9:45 am

2 stops29h 53m

Bangkok Suvarnabhumi

Sat 5/23

10:50 am-9:47 am

2 stops36h 57m

$838

PortlandPhuket City

PDX - HKT

PDXHKT

Portland

Mon 3/9

5:50 pm-11:20 am

2 stops27h 30m

Phuket City

Tue 3/17

12:20 pm-9:50 am

2 stops35h 30m

$840

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Fri 8/14

7:05 pm-4:40 pm

2 stops31h 35m

Bangkok Suvarnabhumi

Sun 8/30

1:10 pm-12:10 am

2 stops25h 00m

$844

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 4/21

8:27 pm-12:00 pm

2 stops25h 33m

Bangkok Suvarnabhumi

Sun 5/3

1:10 pm-7:34 pm

2 stops20h 24m

$849

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Thu 8/20

5:30 am-4:35 am

3 stops33h 05m

Bangkok Suvarnabhumi

Wed 9/2

9:35 am-12:53 am

2 stops29h 18m

$862

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 4/20

2:37 pm-10:20 am

2 stops29h 43m

Chiang Mai

Mon 5/4

11:20 am-9:38 am

2 stops36h 18m

$908

PortlandPhuket City

PDX - HKT

PDXHKT

Portland

Sun 3/8

7:05 am-11:20 am

2 stops38h 15m

Phuket City

Mon 3/23

12:20 pm-4:30 pm

2 stops42h 10m

$969

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 $927. If you are unable to visit Thailand during the month of September, then departing from Portland during the month August is also very affordable. Most momondo users find prices during this month for around $945.

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 $1,071 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.

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 10m
Direct flights	None

The fastest flight from Portland to Thailand takes 22h 10m

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 February 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 8,238 reviews	Search Delta flights
Cathay Pacific	PriceFrom $653	Free Cancellation	Rating 7.6 1,179 reviews	Search Cathay Pacific flights
STARLUX Airlines	PriceFrom $757	Free Cancellation	Rating 8.9 275 reviews	Search STARLUX Airlines flights
Singapore Airlines	PriceFrom $759	Free Cancellation	Rating 8.2 1,463 reviews	Search Singapore Airlines flights
Japan Airlines	PriceFrom $776	Free Cancellation	Rating 8.3 1,714 reviews	Search Japan Airlines flights
China Airlines	PriceFrom $781	Free Cancellation	Rating 8.3 807 reviews	Search China Airlines flights
ANA	PriceFrom $785	Free Cancellation	Rating 8.4 1,100 reviews	Search ANA flights
Korean Air	PriceFrom $795	Free Cancellation	Rating 8.4 1,195 reviews	Search Korean Air flights
United Airlines	PriceFrom $821	Free Cancellation	Rating 7.4 9,345 reviews	Search United Airlines flights
EVA Air	PriceFrom $896	Free Cancellation	Rating 8.4 1,359 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.