$344 Find Cheap Flights from Portland to Bangkok

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Bangkok departing on 3/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Bangkok

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Bangkok.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Bangkok.
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Everything you should know

Cheapest round-trip
$887
Overall average: $1,063
United Airlines
Mon 3/9Thu 3/12
PDX - BKK • 2 stops
Cheapest one-way
$344
Typical prices: $432-$574
Philippine Airlines
Thu 3/5
PDX - BKK • 2 stops
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Top airlines
United Airlines
Cheapest • from $887 (round-trip)
STARLUX Airlines
Best reviews • 8.9 score
Airline reviews
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Portland to Bangkok (PDX-BKK)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Bangkok that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Bangkok

Mon, Mar 9 - Thu, Mar 12
United Airlines Logo
5:30 am - 12:20 am
PDX
-
BKK
28h 50m
2 stops
United Airlines Logo
4:55 pm - 11:04 pm
BKK
-
PDX
20h 09m
2 stops
$887United Airlines
Thu, Feb 19 - Wed, Mar 11
United Airlines Logo
7:30 am - 11:25 am
PDX
-
BKK
36h 55m
2 stops
United Airlines Logo
4:55 pm - 11:04 pm
BKK
-
PDX
20h 09m
2 stops
$888United Airlines
Mon, Mar 9 - Thu, Mar 12
STARLUX Airlines Logo
5:40 pm - 12:35 pm
PDX
-
BKK
28h 55m
2 stops
STARLUX Airlines Logo
5:40 pm - 10:41 pm
BKK
-
PDX
43h 01m
2 stops
$889STARLUX Airlines
Mon, Mar 9 - Thu, Mar 12
STARLUX Airlines Logo
5:40 pm - 4:30 pm
PDX
-
BKK
32h 50m
2 stops
STARLUX Airlines Logo
5:40 pm - 10:41 pm
BKK
-
PDX
43h 01m
2 stops
$890STARLUX Airlines
Mon, May 11 - Wed, Jun 10
Multiple Airlines Logo
7:00 am - 11:30 pm
PDX
-
BKK
26h 30m
2 stops
Multiple Airlines Logo
12:25 pm - 8:42 pm
BKK
-
PDX
22h 17m
2 stops
$892Multiple Airlines
Sat, Mar 14 - Tue, Mar 24
Multiple Airlines Logo
7:05 am - 11:40 pm
PDX
-
BKK
26h 35m
2 stops
Multiple Airlines Logo
12:45 pm - 8:32 pm
BKK
-
PDX
21h 47m
2 stops
$893Multiple Airlines
Mon, May 11 - Mon, Jun 8
ANA Logo
7:45 pm - 5:05 am
PDX
-
BKK
19h 20m
1 stop
ANA Logo
7:05 am - 7:05 pm
BKK
-
PDX
26h 00m
1 stop
$894ANA
Mon, Jun 1 - Mon, Nov 30
Air Canada Logo
7:45 pm - 5:05 am
PDX
-
BKK
19h 20m
1 stop
Air Canada Logo
7:10 am - 6:30 pm
BKK
-
PDX
26h 20m
2 stops
$896Air Canada
Wed, Apr 8 - Wed, Apr 22
Air Canada Logo
9:50 am - 5:05 am
PDX
-
BKK
29h 15m
1 stop
Air Canada Logo
8:15 pm - 9:10 am
BKK
-
PDX
26h 55m
2 stops
$898Air Canada
Sun, Feb 15 - Thu, Feb 26
China Airlines Logo
1:36 pm - 9:50 am
PDX
-
BKK
29h 14m
2 stops
China Airlines Logo
10:55 am - 11:44 pm
BKK
-
PDX
27h 49m
2 stops
$899China Airlines
Booking Insights

KAYAK's insights & trends for Portland to Bangkok flights

Get data-powered insights and trends into flights from Portland to Bangkok to help you find the cheapest flights, the best time to fly and much more.

Find cheap flights to Bangkok
Find cheap flights to Bangkok

Planning a trip from Portland to Bangkok? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

What is the cheapest month to fly from Portland to Bangkok?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Bangkok, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to Bangkok is August, where tickets cost $947 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,660 and $1,404 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Portland to Bangkok, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Portland to Bangkok, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Cheapest flight$344
Flight from Portland to Bangkok Suvarnabhumi Airport

When to book flights from Portland to Bangkok

Are your dates flexible? Find out the best times to travel from Portland to Bangkok based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Portland to Bangkok

  • Can I bring liquids in my carry-on baggage on a United Airlines flight to Bangkok?

    You can bring liquids onboard your United Airlines flight to Bangkok, provided they comply with the Transportation Security Administration (TSA) regulations. All liquids must be in containers of 3.4 ounces (100 ml) or less and should be placed in a clear, resealable plastic bag with a maximum capacity of one quart (one liter).

  • Which airline promotes eco-friendliness for flights from Portland to Bangkok?

    United Airlines stands out for its commitment to environmental sustainability. They have invested in fuel-efficient aircraft, supported sustainable aviation fuel development, and collaborated with Carbon Zero to offer carbon offset credits. Through these initiatives, United Airlines actively reduces its carbon footprint, making it an eco-friendly choice for this route.

  • What are the public transportation options from Bangkok Suvarnabhumi Airport (BKK) to downtown Bangkok?

    BKK is well-connected to downtown Bangkok by various means of public transportation. The Airport Rail Link is a fast and convenient way to reach the city center. The train departs from the basement of the airport and connects to the BTS Skytrain, allowing you to access various parts of the city. Alternatively, taxis and ride-hailing services are readily accessible at the airport, providing a convenient and direct transportation option to your downtown destination.

  • Which airlines have lounges at Portland International Airport?

    PDX is home to lounges operated by Alaska Airlines, Delta Air Lines, and United Airlines. Access to these lounges varies based on membership or ticket class. Alaska Lounge welcomes Alaska Airlines and its partner airline passengers, while Delta Sky Club offers access to Delta Air Lines and SkyTeam members. United Club grants entry to United Airlines and Star Alliance members.

  • What is the cheapest flight from Portland to Bangkok?

    In the last 3 days, the lowest price for a flight from Portland to Bangkok was $344 for a one-way ticket and $887 for a round-trip.

  • Do I need a passport to fly between Portland and Bangkok?

    Yes, you’ll need a passport to travel to Bangkok from Portland.

  • Which airports will I be using when flying from Portland to Bangkok?

    On your way to Bangkok, you’ll fly out from Portland. You’ll be landing in one of Bangkok’s 2 airports: Bangkok Suvarnabhumi or Bangkok Don Mueang Intl.

  • Which aircraft models fly most regularly from Portland to Bangkok?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Portland to Bangkok?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Portland and Bangkok, with oneworld being the most commonly used for this route.

  • What is the most popular layover when flying to Bangkok from Portland?

    Seattle is the most popular layover city among KAYAK users traveling from Portland to Bangkok.

  • How does KAYAK find such low prices on flights from Portland to Bangkok?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Bangkok.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Bangkok?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bangkok from Portland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Bangkok?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Bangkok with an airline and back to Portland with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Bangkok?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Bangkok from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Portland to Bangkok

  • When embarking on a one-stop flight from Portland to Bangkok, your layover destination will depend on the airline you choose. If you travel with Delta Air Lines, you'll layover at Seoul (ICN). In contrast, if you journey with United Airlines, your layover will be at Tokyo (NRT).
  • Portland International Airport (PDX) consists of a single terminal building with five concourses: A, B, C, D, and E. The concourse you'll depart from will depend on the airline you choose. For instance, if you opt for Air Canada, your departure will be from Concourse E, while United Airlines departures are typically from Concourse C.
  • If you're driving to PDX and require long-term parking, the airport offers a hassle-free solution. The Economy Parking Lot is an affordable option, providing ample secure parking spaces. The lot is conveniently connected to the terminal complex via a shuttle service, ensuring a convenient transition from your vehicle to the airport.
  • If you're traveling with young children, consider United Airlines for a family-friendly experience. United Airlines provides priority boarding for families with young kids, ensuring a smooth and stress-free embarkation process. Additionally, they boast of an onboard entertainment system, including a diverse selection of kid-friendly content, ensuring an enjoyable journey for your little ones.
  • Suppose you choose to fly with Air Canada. In that case, it's important to familiarize yourself with their carry-on baggage policy. You are allowed to bring one carry-on bag onboard, which should fit in the overhead bin. Ensure it does not exceed the dimensions of 9 x 15.5 x 21.5 inches and weighs no more than 25 lbs. In addition, you may also bring one personal item which should be small enough to fit comfortably under the seat in front of you.

Reviews of the top 5 airlines serving from Portland to Bangkok

 
See real verified KAYAK customer reviews for airlines flying from Portland to Bangkok. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Bangkok? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.9
STARLUX AirlinesOverall score based on 268 reviews
8.8Entertainment
8.9Boarding
8.6Food
8.8Comfort
9.1Crew
Airline reviews

Th tray was dirty when pulled it out. Still oily and food stains can clearly see last trip cleaner did not clean well. The toilet sink water did not drain quickly enough.

10.0 ExcellentAnonymous, Jan 2026
TPE - SFO
Read more STARLUX Airlines reviews

Th tray was dirty when pulled it out. Still oily and food stains can clearly see last trip cleaner did not clean well. The toilet sink water did not drain quickly enough.

Majority of the movie entertainment loaded in the aircraft were quite old.

Crew is very attentive. Another new airbus 350-900 plane. Very modern.

Passengers were confused and freaking out coz the flight information wasn’t showing on the board that was running with all the departing flights. B9 gate was still showing Cathay Pacific bound for HK 15:50 was on until 22:07. STARLUX staff cameater but didn’t let the passengers go in to pre departure area until 22:45 for the 23:30 boarding time

The aircraft is fairly new. The screen is big and it's great to enjoy movies on a long haul flight. However, the food quality , and drink and snack selections, have room for improvement.

Preboarding food selection is an excellent idea. On the other end I did know the choice. People in my area know the choice. It ends with I got my meal till most of them are half way to finish their meal.

Overall it’s good . However the food quality can be improved .

My luggage was forced open and broke the zipper. I received it in a huge STARLUX plastic bag. Unfortunately, I have a round trip ticket but might be my first and last with this airline

I went to the gate that showed on the flight board but they changed gates at the last minute and I missed my flight. I had to buy new ticket from EVA air to Manila and take 3 hour bus ride back to my home. Will never fly Starlux again!

Starlux was great service and awesome food and drinks👍🏼 will take starlux again for my next vacation👍🏼

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

Flight crew was fantastic. The aircraft was meticulously cleaned at all times. The crew was continuously checking to see if the passengers were ok.

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

I was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

Not many people, so you can lay down on two seats

They did an excellent job helping me with a wheelchair. I couldn’t have asked for any better help.

Flight attendants. Food, entertainment and most of all, be on time.

Delayed. Not a full flight and whole rows left open with the paid seating. Food was ok. My beef meal only had one cube of beef the rest carrot cubes. Entertainment on personal device but didn’t know about it until the flight was almost done.

We are glad to have used China Airlines for our trip. Continue the good service! Thank you!

The flat bed full lying position is not comfortable at all, this could be improved, it is at an awkward position which i dont have the same issues with other airlines business class.

The flight was uneventful and the crew was kind and professional. Really appreciate the option to order a vegan meal for the flight!

I love my Delta crew, they were so welcoming and helpful.

I absolutely loved my flight from Taipei to LAX. I was originally assigned to a different seat, however one of the stewardess noticed I was uncomfortable in my seat. She offered to move me to a more comfortable setting. Although she didn’t have to do what she did, I am more than grateful and thankful for her doing so. My longer flight felt much more comfortable, just by her taking notice. I really appreciate her.

Overall was a lovely experience. The crew were kind and courteous throughout the entire flight.

Better organization of boarding procedures. Terrible leadership guiding people to gates.

They need to improve on how the plane lands cause it was not smooth at all.

The attendant on board was amazing. She should be doing business/first international long haul.

Although our flight was delayed the overall boarding process was very smooth and the crew was accommodating.

I was fully checked in the prior night and i was unchecked and then didn’t have a seat when I boarded. Instead of an aisle seat, I was out in the middle seat of the very last row of the plane.

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

The food was terrible this time. Otherwise pleasant, quiet, on-time.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Was delayed at every point/ connection. Luggages missing for 5days. Had no medications for diabetes and high B/p. when bags where finally delivered on the 30th, the insulin and ozempic were no longer patent, as the ice pack had since dissolved and the authenticity of the med is now questionable, since they must be refrigerated. Please have them refund my bag fees. I should sue them for all the inconveniences caused to me.

The plane was delayed substantially due to a mechanical problem, that being said, the airline was very fair with providing a meal coupon for us. I would rather arrive late on a mechanically sound plane than the alternative. The food served in the plane was just awful, however and I recommend a new catering company.

I waiting for 2 hrs to retrieve my luggage. Didn't get home till 3am.

The flight left late and I didn’t get a glass of bubbly upon boarding (which I’m used to when booking business class on other flights), but otherwise it was a pleasant flight with lovely, helpful crew members and I enjoyed my meal.

Flight cancellations, delays, mass confusion and disorganization! That’s Air Canada for you, nothing new. I would have chosen a different airline if it were an option, and Air Canada continues to prove they don’t care about their customers.

everything was fine. but paying for 1 piece of check-in luggage and denying passengers to board with carry-on luggage which by air line's standards does not fit is not acceptable. when one travels for a longer time one needs to have some essentials

Couldn't fit knees, only 1 toilet working, didn't get anything to drink cause the stewards were not able to get to us

Flight was canceled for a reason they knew hours before but did not mention. Next the gate chnage from 37 to 38 at least 10 times. Ridiculous.

The flight from SFO to YVR was delayed and my bag did not make it to my next flight from YVR to SYD. It took almost 3 days after I landed to get my bag and when I got it, it was filled with dust

Our biggest complaint about Air Canada is that if you don’t like your seat during check-in, there’s a fee to move elsewhere. On our flight from YUL to FFL, we were charged to change seats—just regular seats. What’s maddening is that the plane wasn’t even full; there were even a few people sleeping in the middle row sections (entire rows, completely empty), using them as beds. In my opinion, charging passengers for seat changes is a cash grab by Air Canada. They are definitely not the airline they were back in the day. I suppose they need to gouge the consumer now that they pay their attendants while on ground. One out of 10.

Everything you need to know for your flight from Portland to Bangkok

Information on your arrival and departure airports