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 39% 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.

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

Philippine Airlines and EVA Air are the most popular carriers operating 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 December 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.

$368 Cheap Flights from Portland to Thailand in 2025/26

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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.

7:10 am - 12:45 am

PDX

BKK

26h 35m2 stops

12:55 am - 12:44 pm

BKK

PDX

26h 49m2 stops

$784Korean Air

Thu, Jan 22 - Wed, Feb 4

9:19 pm - 8:00 pm

PDX

BKK

31h 41m2 stops

12:00 pm - 8:35 am

BKK

PDX

35h 35m2 stops

$786Singapore Airlines

Wed, Feb 25 - Sun, Mar 8

9:19 pm - 8:00 pm

PDX

BKK

31h 41m2 stops

3:50 pm - 9:35 am

BKK

PDX

32h 45m2 stops

$787Singapore Airlines

Wed, Feb 25 - Wed, Mar 4

5:35 pm - 9:50 am

PDX

BKK

25h 15m2 stops

5:50 pm - 10:46 pm

BKK

PDX

19h 56m2 stops

$828China Airlines

Sun, Jan 18 - Thu, Feb 5

10:52 am - 1:35 am

PDX

BKK

47h 43m2 stops

5:50 pm - 8:35 am

BKK

PDX

29h 45m2 stops

$829China Airlines

Fri, Jan 23 - Sat, Mar 7

1:38 pm - 10:35 am

PDX

CNX

29h 57m2 stops

11:50 am - 10:56 am

CNX

PDX

38h 06m2 stops

$961EVA Air

Thu, Jan 15 - Wed, Feb 25

9:30 pm - 10:35 am

PDX

CNX

46h 05m2 stops

11:50 am - 11:44 pm

CNX

PDX

26h 54m2 stops

$974EVA Air

Mon, Jan 12 - Mon, Feb 16

7:00 am - 5:20 pm

PDX

HKT

44h 20m2 stops

11:50 am - 10:31 pm

HKT

PDX

24h 41m2 stops

$1,019Cathay Pacific

Fri, Apr 24 - Thu, May 7

9:30 pm - 7:35 pm

PDX

USM

55h 05m2 stops

11:40 am - 1:41 pm

USM

PDX

41h 01m2 stops

$1,390Cathay Pacific

Thu, Jan 22 - Tue, Jan 27

1:38 pm - 4:50 pm

PDX

UTP

36h 12m3 stops

1:00 pm - 4:50 pm

UTP

PDX

42h 50m3 stops

$2,074Qatar Airways

Tue, Feb 3 - Sat, Feb 28

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 10

BKK12:00 pmBangkok Suvarnabhumi

35h 35m

2 stops

PDX9:35 amPortland

$786

Find similar

Singapore Airlines

Feb 25

PDX9:19 pmPortland

31h 41m

2 stops

BKK8:00 pmBangkok Suvarnabhumi

Mar 4

BKK3:50 pmBangkok Suvarnabhumi

32h 45m

2 stops

PDX9:35 amPortland

$787

Find similar

Singapore Airlines

Feb 25

PDX9:19 pmPortland

31h 41m

2 stops

BKK8:00 pmBangkok Suvarnabhumi

Mar 5

BKK8:00 pmBangkok Suvarnabhumi

29h 46m

2 stops

PDX10:46 amPortland

$799

Find similar

United Airlines flights from Portland to Thailand

Our best United Airlines deals on Portland to Thailand flight tickets

United Airlines

Feb 22

PDX7:57 pmPortland

42h 13m

2 stops

BKK5:10 amBangkok Suvarnabhumi

Mar 12

BKK7:10 amBangkok Suvarnabhumi

29h 54m

2 stops

PDX11:04 pmPortland

$867

Find similar

United Airlines

Feb 2

PDX7:52 pmPortland

37h 28m

2 stops

BKK12:20 amBangkok Suvarnabhumi

Feb 10

BKK4:55 pmBangkok Suvarnabhumi

34h 38m

3 stops

PDX12:33 pmPortland

$883

Find similar

United Airlines

Feb 22

PDX7:57 pmPortland

42h 13m

2 stops

BKK5:10 amBangkok Suvarnabhumi

Mar 10

BKK4:55 pmBangkok Suvarnabhumi

20h 09m

2 stops

PDX11:04 pmPortland

$884

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Thu 1/22

7:10 am-12:45 am

2 stops26h 35m

Bangkok Suvarnabhumi

Wed 2/4

12:55 am-12:44 pm

2 stops26h 49m

$784

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 2/25

9:19 pm-8:00 pm

2 stops31h 41m

Bangkok Suvarnabhumi

Sun 3/8

12:00 pm-8:35 am

2 stops35h 35m

$786

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 2/25

9:19 pm-8:00 pm

2 stops31h 41m

Bangkok Suvarnabhumi

Wed 3/4

3:50 pm-9:35 am

2 stops32h 45m

$787

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sun 1/18

5:35 pm-9:50 am

2 stops25h 15m

Bangkok Suvarnabhumi

Thu 2/5

5:50 pm-10:46 pm

2 stops19h 56m

$828

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Fri 1/23

10:52 am-1:35 am

2 stops47h 43m

Bangkok Suvarnabhumi

Sat 3/7

5:50 pm-8:35 am

2 stops29h 45m

$829

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 1/15

1:38 pm-10:35 am

2 stops29h 57m

Chiang Mai

Wed 2/25

11:50 am-10:56 am

2 stops38h 06m

$961

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 1/12

9:30 pm-10:35 am

2 stops46h 05m

Chiang Mai

Mon 2/16

11:50 am-11:44 pm

2 stops26h 54m

$974

PortlandPhuket City

PDX - HKT

PDXHKT

Portland

Fri 4/24

7:00 am-5:20 pm

2 stops44h 20m

Phuket City

Thu 5/7

11:50 am-10:31 pm

2 stops24h 41m

$1,019

PortlandKo Samui

PDX - USM

PDXUSM

Portland

Thu 1/22

9:30 pm-7:35 pm

2 stops55h 05m

Ko Samui

Tue 1/27

11:40 am-1:41 pm

2 stops41h 01m

$1,390

PortlandRayong

PDX - UTP

PDXUTP

Portland

Tue 2/3

1:38 pm-4:50 pm

3 stops36h 12m

Utapao Rayong Pattaya

Sat 2/28

1:00 pm-4:50 pm

3 stops42h 50m

$2,074

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 October is, on average, the cheapest month to fly to Thailand from Portland, with most prices found around $957. If you are unable to visit Thailand during the month of October, then departing from Portland during the month August is also very affordable. Most momondo users find prices during this month for around $958.

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 $1,100 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.

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 00m
Direct flights	None

The fastest flight from Portland to Thailand takes 21h 00m

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 December 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 8,007 reviews	Search Delta flights
Japan Airlines	PriceFrom $776	Free Cancellation	Rating 8.3 1,653 reviews	Search Japan Airlines flights
STARLUX Airlines	PriceFrom $776	Free Cancellation	Rating 8.9 243 reviews	Search STARLUX Airlines flights
China Airlines	PriceFrom $781	Free Cancellation	Rating 8.2 788 reviews	Search China Airlines flights
ANA	PriceFrom $785	Free Cancellation	Rating 8.4 1,021 reviews	Search ANA flights
Korean Air	PriceFrom $795	Free Cancellation	Rating 8.4 1,184 reviews	Search Korean Air flights
United Airlines	PriceFrom $817	Free Cancellation	Rating 7.4 9,094 reviews	Search United Airlines flights
Singapore Airlines	PriceFrom $820	Free Cancellation	Rating 8.1 1,412 reviews	Search Singapore Airlines flights
Qatar Airways	PriceFrom $864	Free Cancellation	Rating 7.4 3,677 reviews	Search Qatar Airways flights
EVA Air	PriceFrom $920	Free Cancellation	Rating 8.4 1,296 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.