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

United Airlines, ANA, and Delta 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 58% of people opting to fly with this airline when traveling to Thailand. Keep in mind that there are 13 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 August 2025, there are 13 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.

$363 Cheap Flights from Portland to Thailand in 2025

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Find the cheapest flights from Portland to Thailand

Round-trip

One-way

Last minute

Cheap round-trip flights

7:45 pm - 3:55 pmPDX-CNX

29h 10m2 stops

4:55 pm - 6:53 pmCNX-PDX

40h 58m2 stops

$802STARLUX Airlines

Find Deal

Sun, Jan 11 - Sat, Jan 24

4:00 pm - 3:55 pmPDX-CNX

32h 55m2 stops

4:55 pm - 9:35 amCNX-PDX

31h 40m2 stops

$835

Find Deal

Thu, Jan 22 - Tue, Feb 24

9:17 am - 12:45 amPDX-BKK

24h 28m2 stops

11:15 pm - 7:11 pmBKK-PDX

34h 56m2 stops

$840Delta

Find Deal

Sun, Nov 2 - Thu, Mar 5

6:00 am - 11:20 pmPDX-BKK

27h 20m2 stops

9:30 pm - 7:29 pmBKK-PDX

36h 59m2 stops

$846Korean Air

Find Deal

Sat, Nov 1 - Thu, Mar 5

5:01 pm - 9:55 pmPDX-CNX

38h 54m2 stops

11:15 pm - 2:52 pmCNX-PDX

29h 37m2 stops

$846Korean Air

Find Deal

Sat, Sep 13 - Sun, Sep 21

7:45 am - 11:55 pmPDX-BKK

26h 10m2 stops

9:35 am - 2:42 pmBKK-PDX

43h 07m2 stops

$849United Airlines

Find Deal

Sun, Aug 31 - Sun, Sep 7

1:25 pm - 12:15 pmPDX-BKK

32h 50m2 stops

1:30 pm - 12:18 amBKK-PDX

24h 48m2 stops

$850

Find Deal

Sun, Oct 12 - Wed, Oct 22

7:30 am - 12:05 amPDX-BKK

25h 35m2 stops

7:10 am - 6:41 pmBKK-PDX

26h 31m2 stops

$852United Airlines

Find Deal

Mon, Dec 1 - Thu, Dec 11

8:00 am - 5:05 amPDX-BKK

30h 05m2 stops

8:05 am - 1:46 pmBKK-PDX

20h 41m2 stops

$901Japan Airlines

Find Deal

Tue, Dec 2 - Fri, Jan 16

7:40 pm - 7:35 pmPDX-HKT

33h 55m2 stops

12:20 pm - 6:30 pmHKT-PDX

20h 10m2 stops

$2,318Air Canada

Find Deal

Fri, Oct 10 - Sun, Oct 26

China Airlines flights from Portland to Thailand

Our best China Airlines deals on Portland to Thailand flight tickets

China Airlines

Nov 1

PDX5:55 pmPortland

25h 55m

2 stops

BKK9:50 amBangkok Suvarnabhumi

Dec 8

BKK2:05 pmBangkok Suvarnabhumi

31h 13m

2 stops

PDX6:18 amPortland

$861

Find similar

China Airlines

Nov 3

PDX5:30 pmPortland

32h 15m

2 stops

BKK4:45 pmBangkok Suvarnabhumi

Nov 16

BKK5:50 pmBangkok Suvarnabhumi

27h 27m

2 stops

PDX6:17 amPortland

$870

Find similar

China Airlines

Nov 4

PDX5:30 pmPortland

28h 35m

2 stops

BKK1:05 pmBangkok Suvarnabhumi

Mar 3

BKK2:35 amBangkok Suvarnabhumi

46h 12m

2 stops

PDX9:47 amPortland

$881

Find similar

United Airlines flights from Portland to Thailand

Our best United Airlines deals on Portland to Thailand flight tickets

United Airlines

Aug 31

PDX7:45 amPortland

26h 10m

2 stops

BKK11:55 pmBangkok Suvarnabhumi

Sep 7

BKK9:35 amBangkok Suvarnabhumi

43h 07m

2 stops

PDX2:42 pmPortland

$849

Find similar

United Airlines

Dec 1

PDX7:30 amPortland

25h 35m

2 stops

BKK12:05 amBangkok Suvarnabhumi

Dec 11

BKK7:10 amBangkok Suvarnabhumi

26h 31m

2 stops

PDX6:41 pmPortland

$852

Find similar

United Airlines

Dec 29

PDX7:45 pmPortland

48h 40m

2 stops

BKK11:25 amBangkok Suvarnabhumi

Jan 27

BKK9:25 amBangkok Suvarnabhumi

29h 54m

3 stops

PDX12:19 amPortland

$859

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sun 1/11

7:45 pm-3:55 pm

2 stops29h 10m

Chiang Mai

Sat 1/24

4:55 pm-6:53 pm

2 stops40h 58m

$802

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 1/22

4:00 pm-3:55 pm

2 stops32h 55m

Chiang Mai

Tue 2/24

4:55 pm-9:35 am

2 stops31h 40m

$835

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sun 11/2

9:17 am-12:45 am

2 stops24h 28m

Bangkok Suvarnabhumi

Thu 3/5

11:15 pm-7:11 pm

2 stops34h 56m

$840

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sat 11/1

6:00 am-11:20 pm

2 stops27h 20m

Bangkok Suvarnabhumi

Thu 3/5

9:30 pm-7:29 pm

2 stops36h 59m

$846

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 9/13

5:01 pm-9:55 pm

2 stops38h 54m

Chiang Mai

Sun 9/21

11:15 pm-2:52 pm

2 stops29h 37m

$846

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sun 8/31

7:45 am-11:55 pm

2 stops26h 10m

Bangkok Suvarnabhumi

Sun 9/7

9:35 am-2:42 pm

2 stops43h 07m

$849

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sun 10/12

1:25 pm-12:15 pm

2 stops32h 50m

Bangkok Suvarnabhumi

Wed 10/22

1:30 pm-12:18 am

2 stops24h 48m

$850

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Mon 12/1

7:30 am-12:05 am

2 stops25h 35m

Bangkok Suvarnabhumi

Thu 12/11

7:10 am-6:41 pm

2 stops26h 31m

$852

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 12/2

8:00 am-5:05 am

2 stops30h 05m

Bangkok Suvarnabhumi

Fri 1/16

8:05 am-1:46 pm

2 stops20h 41m

$901

PortlandPhuket City

PDX - HKT

PDXHKT

Portland

Fri 10/10

7:40 pm-7:35 pm

2 stops33h 55m

Phuket City

Sun 10/26

12:20 pm-6:30 pm

2 stops20h 10m

$2,318

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 August is, on average, the cheapest month to fly to Thailand from Portland, with most prices found around $958. If you are unable to visit Thailand during the month of August, then departing from Portland during the month September is also very affordable. Most momondo users find prices during this month for around $961.

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 $1,118 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 $1,036 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

Best Price Found	$363
Fastest flight time	20h 30m
Direct flights	None
Airports in Thailand	5 airports

The best one-way flight to Thailand from Portland in the past 72 hours is $363. The best round-trip flight deal from Portland to Thailand found on momondo in the last 72 hours is $802.

The fastest flight from Portland to Thailand takes 20h 30m

There are no direct flights from Portland to Thailand. Popular non-direct routes for this connection are Portland Airport - Bangkok Don Mueang Intl Airport, Portland Airport - Bangkok Suvarnabhumi Airport and Portland Airport - Phuket City Airport.

There are 5 airports near Thailand: Phuket City (HKT), Bangkok Suvarnabhumi (BKK), Bangkok Don Mueang Intl (DMK), Chiang Mai (CNX), Ko Samui (USM)

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 August 2025, there are 13 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 8.0 7,981 reviews	Search Delta flights
China Eastern	PriceFrom $750	Free Cancellation	Rating 7.2 160 reviews	Search China Eastern flights
Korean Air	PriceFrom $789	Free Cancellation	Rating 8.4 1,131 reviews	Search Korean Air flights
ANA	PriceFrom $796	Free Cancellation	Rating 8.4 934 reviews	Search ANA flights
Singapore Airlines	PriceFrom $820	Free Cancellation	Rating 8.1 1,347 reviews	Search Singapore Airlines flights
China Airlines	PriceFrom $837	Free Cancellation	Rating 8.3 764 reviews	Search China Airlines flights
STARLUX Airlines	PriceFrom $845	Free Cancellation	Rating 9.0 206 reviews	Search STARLUX Airlines flights
United Airlines	PriceFrom $852	Free Cancellation	Rating 7.4 8,925 reviews	Search United Airlines flights
Qatar Airways	PriceFrom $864	Free Cancellation	Rating 7.4 3,609 reviews	Search Qatar Airways flights
Japan Airlines	PriceFrom $924	Free Cancellation	Rating 8.3 1,549 reviews	Search Japan Airlines 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.