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

United Airlines, Korean Air, and Air Canada 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 51% 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 August 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.

$452 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.

10:10 am - 11:35 pm

PDX

BKK

23h 25m

2 stops

7:05 am - 7:11 pm

BKK

PDX

26h 06m

1 stop

$874Air Canada

Mon, Sep 7 - Mon, Sep 21

3:30 pm - 5:05 am

PDX

BKK

23h 35m

1 stop

7:05 am - 7:11 pm

BKK

PDX

26h 06m

1 stop

$895Air Canada

Wed, Sep 16 - Wed, Sep 30

5:56 pm - 1:25 pm

PDX

CNX

53h 29m

2 stops

2:55 pm - 5:11 pm

CNX

PDX

64h 16m

3 stops

$902Multiple Airlines

Fri, Aug 28 - Fri, Sep 4

6:08 am - 11:35 pm

PDX

BKK

27h 27m

2 stops

2:35 am - 5:10 pm

BKK

PDX

28h 35m

2 stops

$906Korean Air

Tue, Sep 15 - Mon, Sep 21

12:20 pm - 1:25 pm

PDX

CNX

59h 05m

3 stops

2:55 pm - 5:11 pm

CNX

PDX

64h 16m

3 stops

$910Multiple Airlines

Fri, Aug 28 - Fri, Sep 4

6:35 am - 11:00 pm

PDX

BKK

26h 25m

2 stops

9:40 pm - 11:59 pm

BKK

PDX

40h 19m

2 stops

$949Japan Airlines

Mon, Aug 31 - Mon, Sep 7

7:03 am - 11:00 pm

PDX

BKK

25h 57m

2 stops

7:55 am - 4:50 pm

BKK

PDX

22h 55m

2 stops

$974Japan Airlines

Thu, Aug 27 - Thu, Sep 10

2:53 pm - 12:00 pm

PDX

BKK

31h 07m

2 stops

5:50 pm - 9:25 am

BKK

PDX

29h 35m

2 stops

$978STARLUX Airlines

Wed, Sep 2 - Fri, Sep 18

2:53 pm - 4:40 pm

PDX

BKK

35h 47m

2 stops

5:50 pm - 9:25 am

BKK

PDX

29h 35m

2 stops

$978STARLUX Airlines

Sat, Sep 5 - Fri, Sep 18

6:08 am - 10:10 pm

PDX

HKT

50h 02m

2 stops

11:25 pm - 5:09 pm

HKT

PDX

31h 44m

2 stops

$995Korean Air

Wed, Sep 16 - Wed, Sep 23

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Delta flights from Portland to Thailand

Our best Delta deals on Portland to Thailand flight tickets

Delta

Nov 2

PDX9:31 amPortland

22h 49m

2 stops

BKK11:20 pmBangkok Suvarnabhumi

Nov 19

BKK9:40 amBangkok Suvarnabhumi

27h 16m

2 stops

PDX9:56 pmPortland

$991

Delta

Nov 1

PDX3:31 pmPortland

40h 49m

2 stops

BKK11:20 pmBangkok Suvarnabhumi

Nov 19

BKK9:40 amBangkok Suvarnabhumi

29h 16m

2 stops

PDX11:56 pmPortland

$997

Delta

Oct 13

PDX7:00 amPortland

25h 10m

2 stops

HKT10:10 pmPhuket City

Oct 19

HKT11:25 pmPhuket City

38h 34m

2 stops

PDX11:59 pmPortland

$1,091

United Airlines flights from Portland to Thailand

Our best United Airlines deals on Portland to Thailand flight tickets

United Airlines

Dec 3

PDX5:35 amPortland

32h 35m

2 stops

BKK5:10 amBangkok Suvarnabhumi

Dec 9

BKK9:10 amBangkok Suvarnabhumi

30h 44m

2 stops

PDX12:54 amPortland

$1,006

United Airlines

Aug 17

PDX7:00 amPortland

31h 35m

2 stops

BKK4:35 amBangkok Suvarnabhumi

Sep 2

BKK9:35 amBangkok Suvarnabhumi

27h 10m

2 stops

PDX10:45 pmPortland

$1,007

United Airlines

Aug 19

PDX7:00 amPortland

31h 35m

2 stops

BKK4:35 amBangkok Suvarnabhumi

Sep 17

BKK7:00 amBangkok Suvarnabhumi

27h 59m

2 stops

PDX8:59 pmPortland

$1,008

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Mon 9/7

10:10 am-11:35 pm

2 stops23h 25m

Bangkok Suvarnabhumi

Mon 9/21

7:05 am-7:11 pm

1 stop26h 06m

$874

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 9/16

3:30 pm-5:05 am

1 stop23h 35m

Bangkok Suvarnabhumi

Wed 9/30

7:05 am-7:11 pm

1 stop26h 06m

$895

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Fri 8/28

5:56 pm-1:25 pm

2 stops53h 29m

Chiang Mai

Fri 9/4

2:55 pm-5:11 pm

3 stops64h 16m

$902

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 9/15

6:08 am-11:35 pm

2 stops27h 27m

Bangkok Suvarnabhumi

Mon 9/21

2:35 am-5:10 pm

2 stops28h 35m

$906

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Fri 8/28

12:20 pm-1:25 pm

3 stops59h 05m

Chiang Mai

Fri 9/4

2:55 pm-5:11 pm

3 stops64h 16m

$910

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Mon 8/31

6:35 am-11:00 pm

2 stops26h 25m

Bangkok Suvarnabhumi

Mon 9/7

9:40 pm-11:59 pm

2 stops40h 19m

$949

Quickest round-trip

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Thu 8/27

7:03 am-11:00 pm

2 stops25h 57m

Bangkok Suvarnabhumi

Thu 9/10

7:55 am-4:50 pm

2 stops22h 55m

$974

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 9/2

2:53 pm-12:00 pm

2 stops31h 07m

Bangkok Suvarnabhumi

Fri 9/18

5:50 pm-9:25 am

2 stops29h 35m

$978

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sat 9/5

2:53 pm-4:40 pm

2 stops35h 47m

Bangkok Suvarnabhumi

Fri 9/18

5:50 pm-9:25 am

2 stops29h 35m

$978

PortlandPhuket City

PDX - HKT

PDXHKT

Portland

Wed 9/16

6:08 am-10:10 pm

2 stops50h 02m

Phuket City

Wed 9/23

11:25 pm-5:09 pm

2 stops31h 44m

$995

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 April is, on average, the cheapest month to fly to Thailand from Portland, with most prices found around $914. If you are unable to visit Thailand during the month of April, then departing from Portland during the month January is also very affordable. Most momondo users find prices during this month for around $983.

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 weeks ahead of your departure date. In general, you can expect to find flights to Thailand for around $1,129 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 $977 on momondo.

Can stopping save me money on Portland to Thailand flights?

You could potentially save up to 29% 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	23h 25m
Direct flights	None

The fastest flight from Portland to Thailand takes 23h 25m

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 August 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 8,481 reviews	Search Delta flights
Cathay Pacific	PriceFrom $653	Free Cancellation	Rating 7.6 1,436 reviews	Search Cathay Pacific flights
STARLUX Airlines	PriceFrom $753	Free Cancellation	Rating 8.8 363 reviews	Search STARLUX Airlines flights
Singapore Airlines	PriceFrom $759	Free Cancellation	Rating 8.2 1,584 reviews	Search Singapore Airlines flights
China Airlines	PriceFrom $773	Free Cancellation	Rating 8.3 838 reviews	Search China Airlines flights
Japan Airlines	PriceFrom $776	Free Cancellation	Rating 8.3 1,889 reviews	Search Japan Airlines flights
United Airlines	PriceFrom $822	Free Cancellation	Rating 7.4 10,059 reviews	Search United Airlines flights
Korean Air	PriceFrom $845	Free Cancellation	Rating 8.4 1,222 reviews	Search Korean Air flights
ANA	PriceFrom $861	Free Cancellation	Rating 8.3 1,289 reviews	Search ANA flights
EVA Air	PriceFrom $896	Free Cancellation	Rating 8.5 1,511 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.