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Cheap flights from Portland to Bangkok from $331

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 3/5. 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
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.
China Airlines Logo
10:45 am - 9:45 am
PDX
-
BKK
33h 00m
2 stops
China Airlines Logo
5:30 pm - 8:02 am
BKK
-
PDX
28h 32m
2 stops
$838China Airlines
Sat, May 9 - Mon, May 25
Multiple Airlines Logo
5:40 pm - 9:45 am
PDX
-
BKK
26h 05m
2 stops
Multiple Airlines Logo
5:30 pm - 9:29 am
BKK
-
PDX
29h 59m
2 stops
$841Multiple Airlines
Thu, May 14 - Wed, May 27
Multiple Airlines Logo
7:18 pm - 9:45 am
PDX
-
BKK
24h 27m
2 stops
Multiple Airlines Logo
5:30 pm - 11:04 pm
BKK
-
PDX
19h 34m
2 stops
$842Multiple Airlines
Sat, May 9 - Mon, May 25
Multiple Airlines Logo
5:50 pm - 12:35 pm
PDX
-
BKK
27h 45m
2 stops
Multiple Airlines Logo
1:45 pm - 9:38 pm
BKK
-
PDX
21h 53m
2 stops
$843Multiple Airlines
Wed, Mar 4 - Tue, Mar 24
STARLUX Airlines Logo
7:05 pm - 4:40 pm
PDX
-
BKK
31h 35m
2 stops
STARLUX Airlines Logo
1:10 pm - 12:10 am
BKK
-
PDX
25h 00m
2 stops
$844STARLUX Airlines
Fri, Aug 14 - Sun, Aug 30
Multiple Airlines Logo
7:00 am - 1:20 am
PDX
-
BKK
28h 20m
2 stops
Multiple Airlines Logo
12:25 pm - 8:50 pm
BKK
-
PDX
22h 25m
2 stops
$846Multiple Airlines
Wed, May 13 - Wed, May 27
Multiple Airlines Logo
5:45 pm - 12:00 pm
PDX
-
BKK
28h 15m
2 stops
Multiple Airlines Logo
5:50 pm - 9:35 am
BKK
-
PDX
29h 45m
2 stops
$855Multiple Airlines
Wed, Apr 1 - Sun, Apr 19
Multiple Airlines Logo
5:49 pm - 12:00 pm
PDX
-
BKK
28h 11m
2 stops
Multiple Airlines Logo
5:50 pm - 9:29 am
BKK
-
PDX
29h 39m
2 stops
$861Multiple Airlines
Wed, May 6 - Sun, May 17
United Airlines Logo
5:30 am - 4:35 am
PDX
-
BKK
33h 05m
3 stops
United Airlines Logo
9:35 am - 12:53 am
BKK
-
PDX
29h 18m
2 stops
$862United Airlines
Thu, Aug 20 - Wed, Sep 2
China Eastern Logo
6:15 am - 12:40 am
PDX
-
BKK
28h 25m
2 stops
China Eastern Logo
2:10 am - 4:43 pm
BKK
-
PDX
28h 33m
2 stops
$864China Eastern
Mon, Mar 30 - Thu, Apr 2

EVA Air flights from Portland to Bangkok

Our best EVA Air deals on Portland to Bangkok flight tickets
EVA Air
Mar 31
PDX7:05 amPortland
26h 25m
2 stops
BKK11:30 pmBangkok Suvarnabhumi
Apr 29
BKK1:35 amBangkok Suvarnabhumi
25h 51m
2 stops
PDX1:26 pmPortland
$892
EVA Air
Mar 31
PDX7:05 amPortland
26h 25m
2 stops
BKK11:30 pmBangkok Suvarnabhumi
Apr 29
BKK1:35 amBangkok Suvarnabhumi
25h 51m
2 stops
PDX1:26 pmPortland
$893
EVA Air
Mar 31
PDX7:05 amPortland
26h 25m
2 stops
BKK11:30 pmBangkok Suvarnabhumi
Apr 14
BKK4:45 pmBangkok Suvarnabhumi
20h 59m
2 stops
PDX11:44 pmPortland
$931

United Airlines flights from Portland to Bangkok

Our best United Airlines deals on Portland to Bangkok flight tickets
United Airlines
Aug 20
PDX5:30 amPortland
33h 05m
3 stops
BKK4:35 amBangkok Suvarnabhumi
Sep 2
BKK9:35 amBangkok Suvarnabhumi
29h 18m
2 stops
PDX12:53 amPortland
$862
United Airlines
Aug 20
PDX5:30 amPortland
33h 05m
3 stops
BKK4:35 amBangkok Suvarnabhumi
Aug 31
BKK7:00 amBangkok Suvarnabhumi
31h 53m
2 stops
PDX12:53 amPortland
$865
United Airlines
May 6
PDX7:15 amPortland
36h 20m
3 stops
BKK9:35 amBangkok Suvarnabhumi
May 20
BKK9:35 amBangkok Suvarnabhumi
49h 19m
2 stops
PDX8:54 pmPortland
$866

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 February 23, 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

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sat 5/9

10:45 am-9:45 am

2 stops33h 00m

Bangkok Suvarnabhumi

Mon 5/25

5:30 pm-8:02 am

2 stops28h 32m

$838

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Thu 5/14

5:40 pm-9:45 am

2 stops26h 05m

Bangkok Suvarnabhumi

Wed 5/27

5:30 pm-9:29 am

2 stops29h 59m

$841

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sat 5/9

7:18 pm-9:45 am

2 stops24h 27m

Bangkok Suvarnabhumi

Mon 5/25

5:30 pm-11:04 pm

2 stops19h 34m

$842

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 3/4

5:50 pm-12:35 pm

2 stops27h 45m

Bangkok Suvarnabhumi

Tue 3/24

1:45 pm-9:38 pm

2 stops21h 53m

$843

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Fri 8/14

7:05 pm-4:40 pm

2 stops31h 35m

Bangkok Suvarnabhumi

Sun 8/30

1:10 pm-12:10 am

2 stops25h 00m

$844

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 5/13

7:00 am-1:20 am

2 stops28h 20m

Bangkok Suvarnabhumi

Wed 5/27

12:25 pm-8:50 pm

2 stops22h 25m

$846

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 4/1

5:45 pm-12:00 pm

2 stops28h 15m

Bangkok Suvarnabhumi

Sun 4/19

5:50 pm-9:35 am

2 stops29h 45m

$855

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Wed 5/6

5:49 pm-12:00 pm

2 stops28h 11m

Bangkok Suvarnabhumi

Sun 5/17

5:50 pm-9:29 am

2 stops29h 39m

$861

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Thu 8/20

5:30 am-4:35 am

3 stops33h 05m

Bangkok Suvarnabhumi

Wed 9/2

9:35 am-12:53 am

2 stops29h 18m

$862

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Mon 3/30

6:15 am-12:40 am

2 stops28h 25m

Bangkok Suvarnabhumi

Thu 4/2

2:10 am-4:43 pm

2 stops28h 33m

$864

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 August instead. Flights to Bangkok in August, while not as cheap as those in September, still average around $945.

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 $1,071 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 $932 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
8,234 reviews
Search Delta flights
Cathay PacificPriceFrom $653Free CancellationRating
7.6
1,178 reviews
Search Cathay Pacific flights
STARLUX AirlinesPriceFrom $757Free CancellationRating
8.9
274 reviews
Search STARLUX Airlines flights
Singapore AirlinesPriceFrom $759Free CancellationRating
8.2
1,463 reviews
Search Singapore Airlines flights
Japan AirlinesPriceFrom $776Free CancellationRating
8.3
1,714 reviews
Search Japan Airlines flights
China AirlinesPriceFrom $781Free CancellationRating
8.3
807 reviews
Search China Airlines flights
ANAPriceFrom $785Free CancellationRating
8.4
1,099 reviews
Search ANA flights
Korean AirPriceFrom $795Free CancellationRating
8.4
1,195 reviews
Search Korean Air flights
United AirlinesPriceFrom $821Free CancellationRating
7.4
9,342 reviews
Search United Airlines flights
EVA AirPriceFrom $896Free CancellationRating
8.4
1,359 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