$445 Find Cheap Flights from Portland to Thailand - Compare and Save

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Cheap Flights from Portland to Thailand

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Phuket City
Phuket City2 stops$1,042
Chiang Mai
Chiang Mai2 stops$962
Ko Samui
Ko Samui2 stops$1,159
Krabi
Krabi3 stops$1,286
Phuket City
Phuket City2 stops$1,042
Chiang Mai
Chiang Mai2 stops$962
Ko Samui
Ko Samui2 stops$1,159
Krabi
Krabi3 stops$1,286

Price, demand and travel trends for Portland to Thailand flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Are flights from Portland to Thailand cheaper or more expensive than last year?

Fares from Portland to Thailand are running about 4% lower than they were around this time last year, averaging $1,062 round-trip.

What are the cheapest fares from Portland to Thailand right now?

Here are the cheapest round-trip fares from Portland to Thailand on KAYAK in the last week:

• Bangkok Suvarnabhumi (BKK) from $886
• Chiang Mai (CNX) from $962
• Phuket City (HKT) from $1,042
• Ko Samui (USM) from $1,159
• Krabi (KBV) from $1,286

What’s the cheapest month to fly from Portland to Thailand?

May is the cheapest time of year to fly, with average fares of $961. Prices are highest in December, when average flight costs increase to around $1,728.

When is the best time to book flights from Portland to Thailand?

Book your flights 25 weeks before your trip. KAYAK data collected over the past 12 months shows that booking in this window can save you around 17% compared to booking last-minute (within 2 weeks of departure).

Which airport in Thailand is the cheapest to fly to from Portland?

Based on KAYAK data from the past 12 months, the cheapest airports to fly into Thailand are:

• Bangkok Suvarnabhumi (BKK) from $1,093
• Phuket City (HKT) from $1,119
• Chiang Mai (CNX) from $1,175

What’s the cheapest day to fly from Portland to Thailand?

Tuesday tends to be the cheapest day to fly from Portland to Thailand, while Saturday is the most expensive. Fares run about 16% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from Portland to Thailand?

Data from the past 12 months shows it's cheapest to fly to Thailand during the night with average prices of $1,082. The afternoon is the most expensive time to fly, with average prices of $1,141.

Key details for Portland to Thailand flights

Low season

May

Cheapest flight

$445
Beat the crowds with an average 34% drop in travelers.
The most popular month to fly with an average 32% increase in travelers.
One-way flight from Portland to Bangkok Suvarnabhumi Airport

Your Portland to Thailand flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Portland to Thailand?

    Yes. Fares from Portland to Thailand are low right now. As a rule of thumb, a round-trip under $927 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from Portland to Thailand?

    Over the past 12 months, round-trip fares from Portland to Thailand have ranged from $927 to $1,352.

  • What are the main airports serving Thailand?

    Thailand has 33 airports. The three busiest are Bangkok Suvarnabhumi (BKK) (82% of arrivals), Chiang Mai (CNX) (10%) and Phuket City (HKT) (7%).

  • Which cabin classes are available on flights from Portland to Thailand?

    On flights from Portland to Thailand you can book Economy Class, Premium Economy Class, Business Class or First Class.

  • What are some popular landmarks in Thailand?

    KAYAK travelers' favorite landmarks in Thailand include:

    • Lamai Beach
    • Pratunam
    • Chaweng Beach
    • Phuket Old Town

  • What is the most efficient means of transport to the city center from Suvarnabhumi Airport?

    The Airport Rail Link is the most convenient and economical method to go from the airport to the central business district. When you get there, follow the signs that are pointing toward the railway station, which is at the basement of the building. In around 30 minutes, the train will arrive at Makkasan Station and transport you there immediately.

  • Are there rental cars near Suvarnabhumi Airport?

    Yes. The rental car companies include Europe car, Sixt and Bizcar. These vehicle rental agencies provide pick-up or shuttle services from Bangkok Suvarnabhumi Airport to off-airport locations where customers may hire automobiles.

  • Are there hotels near Portland International Airport?

    On the premises of Portland International Airport is the Sheraton Portland Airport Hotel. This is the hotel that is located closest to the airport terminal, and it offers a shuttle service to and from the airport that is available around the clock and is free of charge. They provide free Wi-Fi, a pool, room service that is available around the clock, and a fitness facility that is open around the clock.

  • Are there parking lots located at Portland International Airport?

    At Portland International Airport, those who need parking for an extended period of time may choose between the Daily Parking Garage or the Economy Parking Lot. The Daily Parking Garage is located immediately to the east of the Daily Parking Garage, and it is easily accessible on foot from the main terminal building.

Your guide to booking Portland to Thailand flights

Get tips on when to book, when to fly and what to know before your trip.
  • If you can plan ahead, the sweet spot for booking your flight is 25 weeks before your trip. KAYAK data shows fares in this window are around 17% lower than last-minute bookings (made within 2 weeks of departure). Not ready to commit? Set a Price Alert and we'll let you know when prices change.
  • If your travel dates are flexible, book your trip for May when flights are typically cheapest and avoid December when prices are at their highest.
  • Flying on Tuesday is usually the cheapest. Flights on Saturday cost about 16% more on average, so being flexible with your travel dates could help you save.
  • If you're looking to save, Bangkok Suvarnabhumi (BKK) is the cheapest airport to fly into from Portland. If you have onward travel, don't forget to factor in the cost of your journey by train, bus or domestic flight.
  • Start your trip in Bangkok, which is the most popular destination in Thailand. From there, it's easy to continue on to other popular destinations such as Pattaya, Phuket City and Chiang Mai.
  • If you are traveling to Thailand, you can choose to arrive at either Suvarnabhumi Airport (BKK), Chiang Mai International Airport (CNX) or Don Mueang International Airport (DMK). These airports serve both domestic and international flights in Thailand.
  • The Portland International Airport (PDX) in the state of Oregon is home to a number of enticing airport lounges, including four sites of Priority Pass. Its club list includes the Delta Sky Club and the United Club, although entrance to these clubs is only granted to passengers who are qualified for membership.
  • Located on the Concourse Level between Gates 5 and 6 at Portland International Airport is the airport's nursing room. Each lactation room is equipped with a chair, a large sink, power outlets, and lighting that may be adjusted.
  • Pets traveling through Portland International Airport have access to designated areas for bathroom breaks both within and outside the airport. Those traveling with assistance animals may unwind in designated areas after passing through security on either Concourse C, near the Alaska Lounge, or Concourse D, across from Gate D5.
  • Airports in Thailand (BKK, SNX, and DMK), in addition to PDX, provide a comprehensive range of services geared at assisting passengers with disabilities. You will be able to obtain assistance renting a wheelchair and navigating the airport terminal when you arrive at the airport, when you depart from the airport, or even if you have already been at the airport. This assistance may be available to you when you leave the airport, when you arrive at the airport, or even when you have already been at the airport. You should not feel hesitant to make use of this aid anytime you believe that doing so may be to your advantage.

Reviews of the top 5 airlines serving from Portland to Thailand

 
Need help choosing which airline to fly with from Portland to Thailand? 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.
8.7
STARLUX AirlinesOverall score based on 400 reviews
8.8Comfort
8.7Entertainment
8.6Food
8.8Boarding
9.1Crew
Airline reviews

Has a major issue with my seat that I paid a premium price for. On the airline website, it showed the seat as the front row. In reality, there was another row in front of me. When I asked the company about it they told me that the front row was reserved for children with bassinets. On both the going and coming back, there were adults in the row in front of me. Coming back, there was a young child in the row to my right with a bassinet who cried constantly, so kept me awake during the long trip back. So I paid for a premium seat that was not premium! Needless to say I will not fly Starlux again.

6.0 GoodThomas, Aug 2026
Read more STARLUX Airlines reviews

Has a major issue with my seat that I paid a premium price for. On the airline website, it showed the seat as the front row. In reality, there was another row in front of me. When I asked the company about it they told me that the front row was reserved for children with bassinets. On both the going and coming back, there were adults in the row in front of me. Coming back, there was a young child in the row to my right with a bassinet who cried constantly, so kept me awake during the long trip back. So I paid for a premium seat that was not premium! Needless to say I will not fly Starlux again.

Counter personnel were friendly and professional. Assured me my bag would reach Bangkok without having to get it and recheck it for my international flight from Seattle. Also printed out all of my boarding passes for my trip.

The seats weren’t comfortable and the foot rest was broken.

I liked the space of the bathroom. The seats were not as comfortable for such an expensive cost the the foot rest was broken. A small child cried for several hours and I thought the FA would have assisted the family to calm the child.

STARLUX Airlines has great staff and crew. Well organized for quick boarding of such a large plane out of Phoenix to Taipei. Interior of the aircraft was that of deluxe aircraft.

Hostesses were very nice I am disappointed that I paid extra 900$for premium economy which wasn't much upgraded from regular economy, I have wasted my money on this trip 😫

amazing and great food. everything was smooth from start to finished

love this boutique luxury airline. crew was nice and attentive. Lounge is too small , i think they should have more area for relaxing and lounging not just to sit and eat .. feels like a cafeteria more than a lounge. overall i enjoy it. food on the plane LAX to Teipei should inprove a bit. no flavor and more drinks pls

Excellent. Airline was very clean, staff was excellent, very professional. Economy seats were still large and comfortable. Meals were included and with good options. We were given a blanket and pillow as well as a comfort kit including an eye mask, ear plugs, and tooth brush. Would highly recommend.

Everything was smooth and professional. They could improve the raw vegan meal with fresher offerings, but otherwise they are now my favorite way to fly to Asia.

I put the review all together for the first review

I liked that they gave us a couple of meals and drinks but the meal was not good and not many options especially if we are seated in the back of the plane.

Again on this leg the WiFi wouldn't work. The seats were comfortable with adequate cushion and space between seats for my legs. Very nice 3-hour flight.

Everything was great, however the seats in the back are very small. Not as Comfortable as I would have liked.

Excellent food. Good service. Crammed Premium Economy seats. I Asked to change seats during check in. They told me the flight was fully booked. But on board I saw empty seats where I could have been easily relocated.

Good. Please add a non- applicable category to your questions.

Amazing crew, excellent food, business class seats seem a bit dated but are super comfy even for a very tall person. If continuing onto Taipei, the stopover in Bangkok is a bit annoying (queue at security) though the lounge is decent.

Boarding is fast and easy for economy class, food was ok baggage policies are good

Everything was fantastic! It was a short flight but the crew really went above and beyond to make it a great flight. I felt cared for with EVA.

Delayed due to no fault of flight crew. Efficient and worked well together.

I purchased my two tickets on February 2025. Tickets were by each other, aisle and window. However, when we were boarded the assigned seats were one by the window and the other one in the middle of the four seated row. It was a horrible experience and we had to tolerate 17 hours of flight seating by different people. If the airline changes the seat arrangement, it should have the decency to notify the passengers in advance. I have checked my return tickets to Los Angeles, and I have noticed that they are not by each other and I don’t know what to do. I hope someone contacts me and rectify this mistake.

I had selected seats together for my family of three when I first booked my tickets in February. However, I realized only when I checked in at the airport that the seats I had selected were no longer assigned to us and we were completely scattered across three different middle seats instead of being seated together! After requesting the Singapore staff to have us seated together on a full flight, they managed to find something but it was right next to the rest rooms and the whole journey of 15+ hours was really unpleasant. They said that the seat selection isn't locked and the airline can reallocate the seats anytime. No one ever told us this and it was a terribly unpleasant surprise. Will avoid Kayak/underpricer and Singapore in future

The friendliness of the attendants, and the quality of the service.

Flight attendants were awesome! Very helpful and patients. Some food were good but maybe not serving fish that kinda make the whole aircraft smell fishy. The “fried pork” was tasty but too much skin so it doesnt taste that great.

Very concerned with guest comforts going out of their way to accommodate special dietary needs when the guests hadn’t pre-ordered.

Clean modern comfortable. Food could have been better, I only ate breakfast I wish they wouldn’t wake sleeping passengers who would rather sleep through dinner. No tea or coffee for breakfast

Food was terrible , uncomfortable seats, WiFi did not work, will never fly Singapore again.

No frills airline with minimal leg room and no entertainment

Construction at PDX resulting in very lung walk from the rental car to the gate. SFO, extremely long walk between terminals to get to connecting Singapore airlines flight. My smart watch recorded a total of 3 miles.

Airport lounge for business class is too crowded and not comfortable. Poor foods and facilities. Boarding was delayed. A lot of coughing people in the flight even in the business class, which indicated poor screening and health risks.

It was serviceable, nothing special but nothing awful on this leg.

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

This was a very average flight. The seat was out of alignment so more uncomfortable than usual. The cabin felt not well maintained. But I safely got where I needed to go.

We had a 90 minute delay due to equipment failure that was detected just before we took off. United rebooked my connecting flight.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

Poor seating comfort, seat cushion too thin, very uncomfortable. My luggage didi not make the flight due to equipment change. At least. United had it delivered the next day. I was without my toilet items for one day.

Flight cancelled because of the grounded 737s. United was good about it and got us onto a later Alaska Airlines flight to Oakland (not San Francisco as originally intended). Had to go through security again and my wife dropped her MacBook Pro, which broke, a $2,500 whoopsie. But we made it home.

Warning- Air Canada makes it almost impossible to get a refund if a flight is cancelled. My flight was cancelled due to a damaged plane. This airline then rebooked me for a later flight. I went on line and tried to navigate their site to rebook to another within my original itinerary and I had thought I had changed it the first time, but since their site is nothing like our sites here in the states, you had to closely look for the links to complete the process. Then came the other problem. Trying to get a $45 refund on check in baggage, that I had paid for one day in advance. I tried calling the airline's customer service. They stated they are unable to process refunds for this. They then referred me to an on line site. This site required you to answer a multitude of drop down questions that are not applicable to a simple flight cancelation. Then right when I think I am done, it asks for an "incident number". I then eventually fly into Vancouver BC International Airport and speak to 3 Air Canada employees. They then tell me they cannot refund me my check in bagge fee. Once again, they refer me to this ridiculous site . They then give me a code to list and tell me to use the airport code, plus the letters AC followed by the flight # to list as an incident #. I tried this and guess what, it failed. Kayak, if you're listening. Something is very ethically wrong with Air Canada's refund process, especially when one of their planes is damaged and a flight is canceled. I have flown for many years, every week for a long time period with many airlines. Please post this so the public can see this accurate assessment of their airline customer service failure.

Great flight attendants, great luggage tracking, pretty good trans-pacific business class setup, food was modest. Only paid WiFi in business class unless you enter an Air Canada member number at the time of booking (e.g., no Star Alliance member number). Vegetarian food was tasty but had no protein. Overall, a good mainstream North American carrier flight experience. Acceptable if the price is right. Otherwise, I might choose an Asian carrier for elevated experience.

It was pretty straight forward, no glitches or hidden costs

The whole plane smelled and felt old. The seats were very uncomfortable. Multiple delays. Extra fees.

For goodness sake, board from the back of the plane to the front and assign overhead space. It would fix everything. Seriously.

Aircraft had technical issues. After 3 hours of trying to resolve, flight was cancelled. Was booked on a flight leaving 12 hours after intended departure. Now on 4 flights instead of 2 and a day late to my destination.

PDX staff was great and we arrived on time in YVR.

Horrible I had a health emergency and couldn’t go Air Canada refused to allow me to reschedule

Really poor travel experience. My first flight was cancelled, which cut my international trip short and threw off my schedule. I will not be flying Air Canada again if I can so help it. The crew and in-flight experience was pleasant and enjoyable but the consistent delays and cancellations are not worth it.

Economy middle seat was so narrow that I could not sit back comfortably with passengers on either side of me. Over the 9-hour flight, with my body slightly twisted most of that time, my previously-healthy left knee became very painful, even though I got up to walk multiple times. The knee is still painful 3 weeks later. Otherwise, it was a nice flight, but I was crippled over my entire vacation.

More options for your flight from Portland to Thailand

Complete your trip to Thailand with a hotel stay or car rental