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Cheap flights from Portland to Bangkok from $455

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 8/3. 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
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
5:55 pm - 9:45 am
PDX
-
BKK
25h 50m
2 stops
Multiple Airlines Logo
5:30 pm - 9:25 am
BKK
-
PDX
29h 55m
2 stops
$843Multiple Airlines
Tue, Sep 1 - Sun, Sep 20
Singapore Airlines Logo
5:40 pm - 12:20 pm
PDX
-
BKK
28h 40m
2 stops
Singapore Airlines Logo
3:30 pm - 9:25 am
BKK
-
PDX
31h 55m
2 stops
$852Singapore Airlines
Tue, Aug 25 - Fri, Aug 28
Multiple Airlines Logo
5:40 pm - 9:45 am
PDX
-
BKK
26h 05m
2 stops
Multiple Airlines Logo
5:30 pm - 12:15 am
BKK
-
PDX
20h 45m
2 stops
$855Multiple Airlines
Sat, Sep 5 - Thu, Oct 1
Multiple Airlines Logo
5:49 pm - 9:45 am
PDX
-
BKK
25h 56m
2 stops
Multiple Airlines Logo
5:30 pm - 9:47 am
BKK
-
PDX
30h 17m
2 stops
$861Multiple Airlines
Mon, May 4 - Tue, Jun 2
Multiple Airlines Logo
5:49 pm - 12:10 pm
PDX
-
BKK
28h 21m
2 stops
Multiple Airlines Logo
1:20 pm - 9:30 am
BKK
-
PDX
34h 10m
2 stops
$862Multiple Airlines
Mon, May 4 - Mon, May 11
Singapore Airlines Logo
5:40 pm - 12:20 pm
PDX
-
BKK
28h 40m
2 stops
Singapore Airlines Logo
3:30 pm - 9:25 am
BKK
-
PDX
31h 55m
2 stops
$873Singapore Airlines
Thu, Aug 27 - Thu, Sep 10
Multiple Airlines Logo
2:50 pm - 9:45 am
PDX
-
BKK
28h 55m
2 stops
Multiple Airlines Logo
10:50 am - 9:29 am
BKK
-
PDX
36h 39m
2 stops
$874Multiple Airlines
Tue, May 5 - Tue, May 26
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
$882Multiple Airlines
Tue, May 5 - Fri, Jun 5
China Airlines Logo
5:49 pm - 9:45 am
PDX
-
BKK
25h 56m
2 stops
China Airlines Logo
10:50 am - 9:30 am
BKK
-
PDX
36h 40m
2 stops
$889China Airlines
Mon, May 4 - Mon, May 11

Singapore Airlines flights from Portland to Bangkok

Our best Singapore Airlines deals on Portland to Bangkok flight tickets
Singapore Airlines
Aug 25
PDX5:40 pmPortland
28h 40m
2 stops
BKK12:20 pmBangkok Suvarnabhumi
Aug 28
BKK3:30 pmBangkok Suvarnabhumi
31h 55m
2 stops
PDX9:25 amPortland
$852
Singapore Airlines
Aug 27
PDX5:40 pmPortland
28h 40m
2 stops
BKK12:20 pmBangkok Suvarnabhumi
Sep 10
BKK3:30 pmBangkok Suvarnabhumi
31h 55m
2 stops
PDX9:25 amPortland
$873

China Airlines flights from Portland to Bangkok

Our best China Airlines deals on Portland to Bangkok flight tickets
China Airlines
May 4
PDX5:49 pmPortland
25h 56m
2 stops
BKK9:45 amBangkok Suvarnabhumi
May 11
BKK10:50 amBangkok Suvarnabhumi
36h 40m
2 stops
PDX9:30 amPortland
$889
China Airlines
May 3
PDX7:00 amPortland
36h 45m
2 stops
BKK9:45 amBangkok Suvarnabhumi
May 9
BKK2:40 amBangkok Suvarnabhumi
44h 58m
2 stops
PDX9:38 amPortland
$895
China Airlines
Apr 28
PDX5:51 pmPortland
32h 29m
2 stops
BKK4:20 pmBangkok Suvarnabhumi
May 30
BKK2:40 amBangkok Suvarnabhumi
45h 07m
2 stops
PDX9:47 amPortland
$940

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 24, 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

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 9/1

5:55 pm-9:45 am

2 stops25h 50m

Bangkok Suvarnabhumi

Sun 9/20

5:30 pm-9:25 am

2 stops29h 55m

$843

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 8/25

5:40 pm-12:20 pm

2 stops28h 40m

Bangkok Suvarnabhumi

Fri 8/28

3:30 pm-9:25 am

2 stops31h 55m

$852
Quickest round-trip

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Sat 9/5

5:40 pm-9:45 am

2 stops26h 05m

Bangkok Suvarnabhumi

Thu 10/1

5:30 pm-12:15 am

2 stops20h 45m

$855

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Mon 5/4

5:49 pm-9:45 am

2 stops25h 56m

Bangkok Suvarnabhumi

Tue 6/2

5:30 pm-9:47 am

2 stops30h 17m

$861

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Mon 5/4

5:49 pm-12:10 pm

2 stops28h 21m

Bangkok Suvarnabhumi

Mon 5/11

1:20 pm-9:30 am

2 stops34h 10m

$862

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Thu 8/27

5:40 pm-12:20 pm

2 stops28h 40m

Bangkok Suvarnabhumi

Thu 9/10

3:30 pm-9:25 am

2 stops31h 55m

$873

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 5/5

2:50 pm-9:45 am

2 stops28h 55m

Bangkok Suvarnabhumi

Tue 5/26

10:50 am-9:29 am

2 stops36h 39m

$874

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Tue 5/5

5:51 pm-9:45 am

2 stops25h 54m

Bangkok Suvarnabhumi

Fri 6/5

2:40 am-9:47 am

2 stops45h 07m

$882

PortlandBangkok

PDX - BKK

PDXBKK

Portland

Mon 5/4

5:49 pm-9:45 am

2 stops25h 56m

Bangkok Suvarnabhumi

Mon 5/11

10:50 am-9:30 am

2 stops36h 40m

$889

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 15m

Direct flights

None
The fastest flight from Portland to Bangkok takes 22h 15m
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 15m 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
8,324 reviews
Search Delta flights
Cathay PacificPriceFrom $653Free CancellationRating
7.6
1,228 reviews
Search Cathay Pacific flights
Singapore AirlinesPriceFrom $759Free CancellationRating
8.2
1,484 reviews
Search Singapore Airlines flights
STARLUX AirlinesPriceFrom $770Free CancellationRating
9.0
292 reviews
Search STARLUX Airlines flights
Japan AirlinesPriceFrom $776Free CancellationRating
8.3
1,748 reviews
Search Japan Airlines flights
China AirlinesPriceFrom $781Free CancellationRating
8.3
817 reviews
Search China Airlines flights
ANAPriceFrom $785Free CancellationRating
8.4
1,142 reviews
Search ANA flights
Korean AirPriceFrom $795Free CancellationRating
8.4
1,202 reviews
Search Korean Air flights
United AirlinesPriceFrom $821Free CancellationRating
7.4
9,471 reviews
Search United Airlines flights
EVA AirPriceFrom $896Free CancellationRating
8.5
1,390 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