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Cheap flights from Portland to Bangkok from $344

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Bangkok departing on 8/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Portland to Bangkok

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:00 am - 9:45 am
PDX
-
BKK
36h 45m
2 stops
Multiple Airlines Logo
2:40 am - 10:25 am
BKK
-
PDX
45h 45m
2 stops
$826Multiple Airlines
Sun, Sep 13 - Fri, Oct 2
Multiple Airlines Logo
2:50 pm - 12:10 pm
PDX
-
BKK
31h 20m
2 stops
Multiple Airlines Logo
2:40 am - 9:24 am
BKK
-
PDX
44h 44m
2 stops
$831Multiple Airlines
Wed, May 6 - Mon, Jun 8
Multiple Airlines Logo
5:51 pm - 12:10 pm
PDX
-
BKK
28h 19m
2 stops
Multiple Airlines Logo
2:40 am - 9:24 am
BKK
-
PDX
44h 44m
2 stops
$833Multiple Airlines
Tue, May 5 - Mon, Jun 8
Multiple Airlines Logo
2:50 pm - 9:45 am
PDX
-
BKK
28h 55m
2 stops
Multiple Airlines Logo
2:40 am - 9:47 am
BKK
-
PDX
45h 07m
2 stops
$838Multiple Airlines
Wed, May 6 - Sun, May 17
Multiple Airlines Logo
2:50 pm - 9:45 am
PDX
-
BKK
28h 55m
2 stops
Multiple Airlines Logo
2:40 am - 9:47 am
BKK
-
PDX
45h 07m
2 stops
$841Multiple Airlines
Wed, May 6 - Tue, May 12
Multiple Airlines Logo
5:51 pm - 9:45 am
PDX
-
BKK
25h 54m
2 stops
Multiple Airlines Logo
2:40 am - 9:47 am
BKK
-
PDX
45h 07m
2 stops
$845Multiple Airlines
Tue, May 12 - Sun, Jun 7
China Airlines Logo
2:50 pm - 4:20 pm
PDX
-
BKK
35h 30m
2 stops
China Airlines Logo
1:20 pm - 9:29 am
BKK
-
PDX
34h 09m
2 stops
$847China Airlines
Wed, May 6 - Mon, May 18
Multiple Airlines Logo
2:50 pm - 9:45 am
PDX
-
BKK
28h 55m
2 stops
Multiple Airlines Logo
5:30 pm - 9:47 am
BKK
-
PDX
30h 17m
2 stops
$848Multiple Airlines
Tue, May 5 - Sat, Jun 6
China Airlines Logo
2:50 pm - 4:20 pm
PDX
-
BKK
35h 30m
2 stops
China Airlines Logo
10:50 am - 9:29 am
BKK
-
PDX
36h 39m
2 stops
$850China Airlines
Wed, May 6 - Mon, May 18
Singapore Airlines Logo
5:40 pm - 8:05 am
PDX
-
BKK
24h 25m
2 stops
Singapore Airlines Logo
3:30 pm - 9:25 am
BKK
-
PDX
31h 55m
2 stops
$851Singapore Airlines
Fri, Aug 21 - Fri, Aug 28

China Airlines flights from Portland to Bangkok

Our best China Airlines deals on Portland to Bangkok flight tickets
China Airlines
May 6
PDX2:50 pmPortland
35h 30m
2 stops
BKK4:20 pmBangkok Suvarnabhumi
May 18
BKK1:20 pmBangkok Suvarnabhumi
34h 09m
2 stops
PDX9:29 amPortland
$847
China Airlines
May 6
PDX2:50 pmPortland
35h 30m
2 stops
BKK4:20 pmBangkok Suvarnabhumi
May 18
BKK10:50 amBangkok Suvarnabhumi
36h 39m
2 stops
PDX9:29 amPortland
$850
China Airlines
May 5
PDX2:50 pmPortland
35h 30m
2 stops
BKK4:20 pmBangkok Suvarnabhumi
Jun 6
BKK10:50 amBangkok Suvarnabhumi
36h 57m
2 stops
PDX9:47 amPortland
$865

United Airlines flights from Portland to Bangkok

Our best United Airlines deals on Portland to Bangkok flight tickets
United Airlines
Mar 30
PDX3:30 pmPortland
28h 05m
3 stops
BKK9:35 amBangkok Suvarnabhumi
Apr 30
BKK3:45 pmBangkok Suvarnabhumi
47h 14m
2 stops
PDX12:59 amPortland
$1,429
United Airlines
Mar 29
PDX7:14 pmPortland
48h 21m
3 stops
BKK9:35 amBangkok Suvarnabhumi
Apr 30
BKK3:45 pmBangkok Suvarnabhumi
47h 14m
2 stops
PDX12:59 amPortland
$1,444
United Airlines
Mar 29
PDX7:14 pmPortland
48h 21m
3 stops
BKK9:35 amBangkok Suvarnabhumi
Apr 22
BKK9:35 amBangkok Suvarnabhumi
49h 13m
2 stops
PDX8:48 pmPortland
$1,473

momondo Fare Finder

 
Customize your flight search to find flights from Portland to Bangkok that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 19, 2026.
Use the filters below to find and compare flights from Portland to Bangkok that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sun 9/13

7:00 am-9:45 am

2 stops36h 45m

Bangkok Suvarnabhumi

Fri 10/2

2:40 am-10:25 am

2 stops45h 45m

$826

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 5/6

2:50 pm-12:10 pm

2 stops31h 20m

Bangkok Suvarnabhumi

Mon 6/8

2:40 am-9:24 am

2 stops44h 44m

$831

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 5/5

5:51 pm-12:10 pm

2 stops28h 19m

Bangkok Suvarnabhumi

Mon 6/8

2:40 am-9:24 am

2 stops44h 44m

$833

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 5/6

2:50 pm-9:45 am

2 stops28h 55m

Bangkok Suvarnabhumi

Sun 5/17

2:40 am-9:47 am

2 stops45h 07m

$838

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 5/6

2:50 pm-9:45 am

2 stops28h 55m

Bangkok Suvarnabhumi

Tue 5/12

2:40 am-9:47 am

2 stops45h 07m

$841

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 5/12

5:51 pm-9:45 am

2 stops25h 54m

Bangkok Suvarnabhumi

Sun 6/7

2:40 am-9:47 am

2 stops45h 07m

$845

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 5/6

2:50 pm-4:20 pm

2 stops35h 30m

Bangkok Suvarnabhumi

Mon 5/18

1:20 pm-9:29 am

2 stops34h 09m

$847

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 5/5

2:50 pm-9:45 am

2 stops28h 55m

Bangkok Suvarnabhumi

Sat 6/6

5:30 pm-9:47 am

2 stops30h 17m

$848

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 5/6

2:50 pm-4:20 pm

2 stops35h 30m

Bangkok Suvarnabhumi

Mon 5/18

10:50 am-9:29 am

2 stops36h 39m

$850
Quickest round-trip

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Fri 8/21

5:40 pm-8:05 am

2 stops24h 25m

Bangkok Suvarnabhumi

Fri 8/28

3:30 pm-9:25 am

2 stops31h 55m

$851

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Bangkok from

How to get the cheapest flight ticket from Portland to Bangkok

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

What is the typical price of a round-trip flight between Portland and Bangkok?

What is the cheapest month to fly to Bangkok?

If you aren’t able to travel during the month of September, then book flights to Bangkok from Portland during March instead. Flights to Bangkok in March, while not as cheap as those in September, still average around $927.

How far in advance should I book a flight to Bangkok?

You are more likely to see cheaper flights to Bangkok from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok for around $1,060 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok from Portland for as low as $929 on momondo.

Cheap Portland to Bangkok flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Bangkok

Fastest flight time

22h 10m

Direct flights

None
The fastest flight from Portland to Bangkok takes 22h 10m
There are no direct flights from Portland to Bangkok. There are no popular flight routes from Portland to Bangkok.
Search flight deals

  • How far is Portland to Bangkok by plane?

    The distance between Portland and Bangkok is about 7529.0 mi. 22h 10m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Portland Airport to Bangkok?

    Prices for flights from Portland Airport to Bangkok are updated daily.

  • How many operators does momondo search for flights from Portland Airport to Bangkok?

  • How old do you have to be to fly from Portland Airport to Bangkok?

    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 Bangkok.

  • What documentation or ID do you need to fly to Bangkok?

    The travel and health documents required for your trip to Bangkok 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 Bangkok. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Portland to Bangkok

Compare and see reviews for airlines that fly from Portland to Bangkok with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $139Free CancellationRating
7.9
8,303 reviews
Search Delta flights
Cathay PacificPriceFrom $669Free CancellationRating
7.6
1,217 reviews
Search Cathay Pacific flights
Singapore AirlinesPriceFrom $759Free CancellationRating
8.2
1,480 reviews
Search Singapore Airlines flights
STARLUX AirlinesPriceFrom $770Free CancellationRating
8.9
287 reviews
Search STARLUX Airlines flights
Japan AirlinesPriceFrom $776Free CancellationRating
8.3
1,741 reviews
Search Japan Airlines flights
China AirlinesPriceFrom $781Free CancellationRating
8.3
814 reviews
Search China Airlines flights
ANAPriceFrom $785Free CancellationRating
8.4
1,133 reviews
Search ANA flights
Korean AirPriceFrom $795Free CancellationRating
8.4
1,205 reviews
Search Korean Air flights
United AirlinesPriceFrom $821Free CancellationRating
7.4
9,444 reviews
Search United Airlines flights
EVA AirPriceFrom $896Free CancellationRating
8.4
1,379 reviews
Search EVA Air flights

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Bangkok?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Portland to Bangkok. momondo saves you time and could save you money on your trip.

Can I find flights from Portland to Bangkok with flexible booking policies on momondo?

All flight searches from Portland to Bangkok on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Portland to Bangkok?

Once all potential Portland to Bangkok flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Portland to Bangkok right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Portland to Bangkok flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to Thailand

Fly into one of these airports located in Bangkok

Airports listed have a maximum distance of 15.4 mi from Bangkok
Bangkok Suvarnabhumi Airport
Bangkok Don Mueang Intl Airport