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

Cathay Pacific, Korean Air, and Qatar Airways 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 47% 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 November 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.

$389 Cheap Flights from Portland to Thailand in 2025/26

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Find the cheapest flights from Portland to Thailand

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

9:19 pm - 8:00 pmPDX-BKK

31h 41m2 stops

9:10 pm - 1:34 pmBKK-PDX

31h 24m2 stops

$794Singapore Airlines

Find Deal

Wed, Feb 18 - Wed, Feb 25

5:50 pm - 1:05 pmPDX-BKK

28h 15m2 stops

2:35 am - 9:35 amBKK-PDX

46h 00m2 stops

$815Multiple Airlines

Find Deal

Mon, Jan 19 - Mon, Feb 9

1:24 pm - 9:50 amPDX-BKK

29h 26m2 stops

5:50 pm - 6:18 amBKK-PDX

27h 28m2 stops

$826China Airlines

Find Deal

Sun, Nov 23 - Tue, Dec 23

1:24 pm - 9:50 amPDX-BKK

29h 26m2 stops

5:50 pm - 9:38 amBKK-PDX

30h 48m2 stops

$827China Airlines

Find Deal

Mon, Nov 24 - Wed, Dec 24

5:25 pm - 10:55 pmPDX-CNX

38h 30m2 stops

12:15 am - 4:30 pmCNX-PDX

31h 15m2 stops

$940Korean Air

Find Deal

Sun, Jan 18 - Tue, Jan 27

3:22 pm - 5:35 pmPDX-HKT

59h 13m2 stops

12:20 pm - 2:48 pmHKT-PDX

41h 28m2 stops

$961Cathay Pacific

Find Deal

Tue, Jan 13 - Tue, Jan 27

5:10 pm - 10:10 pmPDX-HKT

39h 00m2 stops

11:25 pm - 1:14 pmHKT-PDX

27h 49m2 stops

$962Korean Air

Find Deal

Thu, Mar 19 - Mon, Mar 30

5:51 pm - 5:35 pmPDX-HKT

56h 44m2 stops

11:50 am - 11:24 pmHKT-PDX

25h 34m2 stops

$975Cathay Pacific

Find Deal

Sun, Jan 18 - Thu, May 7

5:50 pm - 10:35 amPDX-CNX

49h 45m2 stops

11:50 am - 11:32 pmCNX-PDX

26h 42m2 stops

$980EVA Air

Find Deal

Wed, Jan 7 - Wed, Feb 11

10:52 am - 10:35 amPDX-CNX

56h 43m2 stops

11:50 am - 11:32 pmCNX-PDX

26h 42m2 stops

$981EVA Air

Find Deal

Wed, Jan 7 - Wed, Feb 11

China Airlines flights from Portland to Thailand

Our best China Airlines deals on Portland to Thailand flight tickets

China Airlines

Nov 23

PDX1:24 pmPortland

29h 26m

2 stops

BKK9:50 amBangkok Suvarnabhumi

Dec 23

BKK5:50 pmBangkok Suvarnabhumi

27h 28m

2 stops

PDX6:18 amPortland

$826

Find similar

China Airlines

Nov 24

PDX1:24 pmPortland

29h 26m

2 stops

BKK9:50 amBangkok Suvarnabhumi

Dec 24

BKK5:50 pmBangkok Suvarnabhumi

30h 48m

2 stops

PDX9:38 amPortland

$827

Find similar

China Airlines

Jan 18

PDX5:50 pmPortland

31h 55m

2 stops

BKK4:45 pmBangkok Suvarnabhumi

Feb 5

BKK10:55 amBangkok Suvarnabhumi

26h 51m

2 stops

PDX10:46 pmPortland

$828

Find similar

Singapore Airlines flights from Portland to Thailand

Our best Singapore Airlines deals on Portland to Thailand flight tickets

Singapore Airlines

Feb 25

PDX9:19 pmPortland

31h 41m

2 stops

BKK8:00 pmBangkok Suvarnabhumi

Mar 15

BKK12:00 pmBangkok Suvarnabhumi

35h 35m

2 stops

PDX9:35 amPortland

$790

Find similar

Singapore Airlines

Feb 18

PDX9:19 pmPortland

31h 41m

2 stops

BKK8:00 pmBangkok Suvarnabhumi

Feb 25

BKK9:10 pmBangkok Suvarnabhumi

31h 24m

2 stops

PDX1:34 pmPortland

$794

Find similar

Singapore Airlines

Mar 31

PDX6:00 amPortland

24h 00m

2 stops

BKK8:00 pmBangkok Suvarnabhumi

Apr 14

BKK6:30 pmBangkok Suvarnabhumi

35h 58m

2 stops

PDX4:28 pmPortland

$799

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 2/18

9:19 pm-8:00 pm

2 stops31h 41m

Bangkok Suvarnabhumi

Wed 2/25

9:10 pm-1:34 pm

2 stops31h 24m

$794

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Mon 1/19

5:50 pm-1:05 pm

2 stops28h 15m

Bangkok Suvarnabhumi

Mon 2/9

2:35 am-9:35 am

2 stops46h 00m

$815

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sun 11/23

1:24 pm-9:50 am

2 stops29h 26m

Bangkok Suvarnabhumi

Tue 12/23

5:50 pm-6:18 am

2 stops27h 28m

$826

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Mon 11/24

1:24 pm-9:50 am

2 stops29h 26m

Bangkok Suvarnabhumi

Wed 12/24

5:50 pm-9:38 am

2 stops30h 48m

$827

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sun 1/18

5:25 pm-10:55 pm

2 stops38h 30m

Chiang Mai

Tue 1/27

12:15 am-4:30 pm

2 stops31h 15m

$940

PortlandPhuket City

PDX - HKT

PDXHKT

Portland

Tue 1/13

3:22 pm-5:35 pm

2 stops59h 13m

Phuket City

Tue 1/27

12:20 pm-2:48 pm

2 stops41h 28m

$961

PortlandPhuket City

PDX - HKT

PDXHKT

Portland

Thu 3/19

5:10 pm-10:10 pm

2 stops39h 00m

Phuket City

Mon 3/30

11:25 pm-1:14 pm

2 stops27h 49m

$962

PortlandPhuket City

PDX - HKT

PDXHKT

Portland

Sun 1/18

5:51 pm-5:35 pm

2 stops56h 44m

Phuket City

Thu 5/7

11:50 am-11:24 pm

2 stops25h 34m

$975

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 1/7

5:50 pm-10:35 am

2 stops49h 45m

Chiang Mai

Wed 2/11

11:50 am-11:32 pm

2 stops26h 42m

$980

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 1/7

10:52 am-10:35 am

2 stops56h 43m

Chiang Mai

Wed 2/11

11:50 am-11:32 pm

2 stops26h 42m

$981

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 $949. If you are unable to visit Thailand during the month of September, then departing from Portland during the month October is also very affordable. Most momondo users find prices during this month for around $957.

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 $1,093 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 $925 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

Direct flights	None

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 November 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 $227	Free Cancellation	Rating 7.9 8,002 reviews	Search Delta flights
Japan Airlines	PriceFrom $776	Free Cancellation	Rating 8.3 1,624 reviews	Search Japan Airlines flights
STARLUX Airlines	PriceFrom $777	Free Cancellation	Rating 8.9 232 reviews	Search STARLUX Airlines flights
ANA	PriceFrom $793	Free Cancellation	Rating 8.4 1,009 reviews	Search ANA flights
Korean Air	PriceFrom $795	Free Cancellation	Rating 8.4 1,170 reviews	Search Korean Air flights
United Airlines	PriceFrom $817	Free Cancellation	Rating 7.4 9,029 reviews	Search United Airlines flights
Singapore Airlines	PriceFrom $820	Free Cancellation	Rating 8.1 1,407 reviews	Search Singapore Airlines flights
China Airlines	PriceFrom $835	Free Cancellation	Rating 8.3 782 reviews	Search China Airlines flights
Qatar Airways	PriceFrom $864	Free Cancellation	Rating 7.4 3,664 reviews	Search Qatar Airways flights
Air Canada	PriceFrom $928	Free Cancellation	Rating 7.1 10,463 reviews	Search Air Canada 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.