Find cheap flights from Boston to Southeast Asia - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 26% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals
Booking Insights
Flight Deals
Booking Insights

Price, demand and travel trends for Boston to Southeast Asia flights

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

Are flights from Boston to Southeast Asia cheaper or more expensive than last year?

Fares from Boston to Southeast Asia are about 16% higher than they were in November last year, averaging $1,138 round-trip.

What's the cheapest month to fly from Boston to Southeast Asia?

March is typically the cheapest month to fly from Boston to Southeast Asia, with round-trip fares averaging $1,054. December and June are usually the most expensive, averaging $1,807 and $1,528, respectively.

How do fares from Boston to Southeast Asia vary by day of the week?

On average, Monday is the cheapest day to fly from Boston to Southeast Asia and Friday is the most expensive. Looking at the past 12 months of KAYAK data, it's 12% more expensive to fly on a Friday compared to Monday.

What's the best time of day to fly from Boston to Southeast Asia?

It's cheapest to fly to Southeast Asia in the afternoon with average prices of $1,198. The evening is the most expensive time to fly, with average prices of $1,385.

What's the best time to book a flight from Boston to Southeast Asia?

Book your flights 22 weeks before your trip. KAYAK data collected over the past 12 months shows that booking in this window can save you around 24% compared to booking at the last minute (within 2 weeks of departure).

Key details for Boston to Southeast Asia flights

Low season

October
Beat the crowds with an average 22% drop in travelers.
The most popular month to fly with an average 27% increase in travelers.

Your Boston to Southeast Asia flight questions, answered

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

  • How much should I budget for a flight from Boston to Southeast Asia?

    Over the past 12 months, round-trip fares from Boston to Southeast Asia have typically cost between $1,009 and $1,540.

  • Which airlines fly nonstop from Boston to Southeast Asia?

    Based on the flight schedule for the next 3 months, no airline regularly operates nonstop flights from Boston to Southeast Asia. One-stop options include:

    • Korean Air
    • Cathay Pacific
    • Delta

  • Which cabin classes are available from Boston to Southeast Asia?

    On flights from Boston to Southeast Asia you can book Economy Class, Premium Economy Class, Business Class or First Class.

  • What are some popular landmarks around Southeast Asia?

    Southeast Asia is home to many popular sights. KAYAK travelers' favorites include:

    • Patong Beach
    • Pattaya Beach
    • Kata Beach
    • Railay Beach

Your guide to booking Boston to Southeast Asia 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 22 weeks before your trip. KAYAK data shows fares in this window are around 24% 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.
  • Flexible with your dates? Fly in March to save some money. It's typically the cheapest month on this route, while flights in December will cost you the most.
  • Fly out on a Monday to get the cheapest fares. Avoid Friday flights, which are about 12% more expensive.
  • Start your trip in Bangkok, the most popular destination in Southeast Asia. From there, it's easy to continue on to other popular spots such as Singapore, Ho Chi Minh City and Manila.

Reviews of the top 5 airlines serving from Boston to Southeast Asia

 
Need help choosing which airline to fly with from Boston to Southeast Asia? 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.
8.4
Korean AirOverall score based on 1218 reviews
8.5Boarding
8.1Food
8.3Comfort
8.2Entertainment
8.7Crew
Airline reviews

The crew was great. There was no wifi The cabin temperature got very hot Seat was uncomfortable

6.0 GoodAnonymous, Oct 2026
Read more Korean Air reviews

The crew was great. There was no wifi The cabin temperature got very hot Seat was uncomfortable

AAAAHHHH... It was shocking in a very positive way, the attention to detail, the courtesy, the manners of all personnel on board, the constant honest smiling. You can see and feel they take pride in all they do no matter how trivial. The plane in general was very comfortable. I can't wait to do it again

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!

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

not too bad but not too great either. Service on all airlines declined ever since covid. Your Delta Stewardess are not that friendly at all. :-(

Always fly with Korean Airlines. Best service great food. Nice and clean as always.

Great to have economy + on JAL. Economy + has their own designated check in. You are also able to use their lounge which is very relaxing. There is food, desserts and drinks available as well. The seats on the plane don’t recline very much and the isle way is narrow when you need to use the restroom. The food was just ok, typical airplane food taste. The stewardesses were very nice and helpful. Two meals were provided, and the last meal was a fish sandwich. Too bad I don’t eat seafood. The smell of fish was not a welcoming odor in a confined airplane. Overall, I would recommend JAL, (LAX to Tokyo)

Fine. I like the attendant hospitality from Tokyo to Seattle bettet

They moved my seat without my consent and they won’t refund the money I spent on it. I paid for a front row aisle seat and they moved me to a center seat in the last row of premium economy. They were very rude about everything and nothing like Singapore Airlines or Korean Airways which I flown before.

My experience with KAYAK was an absolute nightmare!!! I will never use your stinking company again, and I have been spreading the word. You stole over $1,000 from me. For the rest of my life, I will always steer people away from your dirty company.

Communication about delays was not very good. Crew and staff were excellent!

If they can provide a direct luggage transit line at JFK airport for all connecting flights, that would be prefect,

I was so hungry , from Boston to Tokyo, only 2 big food .

We ordered for non vegetarian Hindu meal but instead they served us vegetarian Hindu meal. That was also not good. It was very annoying and aggravating. Hope our return from Tokyo to jfk on March 27 same is not repeated. Caterar should understand difference between non vegetarian Hindu meal and vegetarian Hindu meal.

Food was great, Entertainment was bad, movies were not current and just did not have good variety. Granted I was tired so cranky might have played into my evaluation. Overall based on cost I definitely would fly them again. I am a million mile flyer on another airline, the service on JAL really beats all airlines.

Other than needing a bit more content on the IFE, Japan Air Premium Economy is amazing! It includes lounge access, and other than not having lay flat seats, felt better than some business cabins I’ve been on.

Packed flight and not sure why dinner service would start at midnight while passengers we’re trying to sleep

Travelling with 2 others for work. Delta asked to check their carry ons due to the fullness of the plane. This was all good until the next leg of the flight. One of the 3 had their carry on checked through to the final destination but their passport on in their checked bag. Which they could not get to and he was not allowed on to the plane. Even though Delta had to retrieve his bag, because he was not allowed on. So they got his bag and he was in the terminal, but even when the flight was delayed, due to mechanical issues, he was not allowed to come onto the plane. Since the delay was nearly 2 hours, he was finally allowed back on the plane.

Boarding was delayed by an hour and then we proceeded to sit on the tarmac for another 30-40 minutes. No clear explanation was ever given and the delay caused me to miss my connecting flight home. Was forced to stay the night in the connecting city which impacted my following workday and cause personal issues at home as well.

Good flight — left on time due to on time arrival of Pittsburgh flight

Delta keep on impressing me. Right now Delta airline is the best of them all

Good but since we got in early we had to wait on runway for our gate. That was kind of a bummer but we still got in earlier than planned For entertainment I was watching a movie and getting close to the end of it with 15 min left but it kept jumping automatically to the next movie before finishing.

13 hour delay stuck in Detroit and missed a day of meetings. It was terrible

Great crew. Comfortable seating. Nice overhead bin space. My app didn't allow me to check in for my flight to BOS. When I called Support, they didn't fix it, but just told me to check in at the airport. Seat back entertainment was great. Could be better if the audio could connect to Bluetooth.

The cabin was definitely dated, but that's about par for the course. The flight crew were wonderful as always (always a Delta highlight), but the boarding process was slow with little direction or encouragement to get people in their seats quickly since we were already delayed.

Totally organized, quick boarding, professional staff and ON TIME! Good size seats in the cabin Wonderful experience

Great flight. I should have figured out the bed situation in biz class earlier. Confusing in dark. My bad.

Business class check-in was flawless; was automatically given a lounge voucher. Flight attendants were helpful and professional. There was a purser who introduced herself at the beginning of the flight but then I never saw her again.

For a 17hr economy flight it wasn’t bad at all, thankfully it wasn’t a narrow body plane.

Simplicity of boarding and corporate interactions were all totally positive and simple, brief, organized and clear. No regrets at all. I will favor flights with Cathay Pacific in the future.

Big selection and great food and beverages in business class with good service. Full recline but less privacy compared with Qatar.

Really impressed with the Airline and much with the Crew. The crew was amazingggg, changed seats very easily, provided a lot of snacks on demand, the plane is nice and clean, the menu is well presented; unfortunately, the food is not fantastic, but it's not bad either but nothing to rave about. I am still rating it as excellent because I loved everything else; food improvement will be great!

My flight was delayed by 8 hours I arrived at airport 4hrs earlier but to see if they can reroute me to get my connecting flt to Hong Kong. They auto rebooked my flt. With no chance. Which I missed this entire reservation through kayak. My next flt they got me on was at 6 am. Misses an entire day of my trip abroad all my accommodations seat assignments were missed and missed adding my TSA precheck to my ticket as well as my vegan meal request so I didnt have meals on any of the flight....so not a comfortable experience. Please help me with accommodations upon my return.

Seats in the absolute back row of the plane even though we booked ages ago :( Crew was awesome though

From BOS to HK, the crew had pushed me to choose the pasta for meal multiple times. It was a bad experience. Without this, everything was good.

The overall flight went well and the aircrew was pleasant.

⭐ Absolutely AWFUL Experience with United Airlines! If I could give United Airlines ZERO stars, I would. The seats have practically NO legroom, making the flight feel like being crammed into a tin can with nowhere to move. Comfort? Forget about it! And the fees? Absolutely ridiculous! They seem to charge you for EVERYTHING. You pay for your ticket, then get hit with extra charges for things that should be part of a decent flying experience. What’s next, charging passengers for breathing? Flying with United feels less like being a valued customer and more like being a walking wallet. The seats are uncomfortable, the legroom is pathetic, and the constant nickel-and-diming is infuriating. For the price you pay, you would think they could at least provide a little space to stretch your legs and a travel experience that doesn’t leave you feeling ripped off. Do yourself a favor and look at other airlines before booking with United. I certainly won’t be rushing to fly with them again. Absolutely disappointing from start to finish!

Flight was very smooth from Boston. But when we got to Houston, the gate was not open and we waited on the runway for over 30 min!!

My flight from Boston to SFO was fine. Crew was friendly and helpful. Food was mediocre. Fright from SFO to MNL was not as good. My flight attendant was friendly but didn’t seem to have a lot of experience. She seemed overwhelmed. Also, this was the only red eye business class flight I’ve flown which only served dinner 2 hours after takeoff in a 13 hr flight. When I woke up 1 hr before landing, everyone was eating so I assumed bkft was being served. I pushed my button for help and no one came so I approached my flight attendant and she said they don’t serve bkft but she gave me choices for lunch or dinner. I routinely fly business class but I was disappointed with the lack of service and attention I was given on this flight. Also, most airlines will offer a snack or coffee before bkft is served but this was not offered during this flight. Overall, it was disappointing.

Horrible on the chicago end. They change hates then there is a plane at the new gate so we can’t pull in. Then that plane has mechanical issue and needs to be pulled back to the gate but we can’t get to another new gate due the other plane being in the way. Horrible gate management which will cause many customers to miss connections.

Very disappointing that on an international business class flight they would not give me access to the lounge in Boston. They said it was because it was a codeshare flight. International business class should include lounge access regardless of codeshare.

Great, except the canon was so cold. Even the flight attendants put jackets on

The app logs you out right when you are boarding requiring all passwords and reservation number for the flight. Super annoying

The pre-order only approach for fresh food is really challenging

Flight was 2.5 late. Maybe not United’s fault but late none the less. We were late as well on the first leg. WiFi quit working with an hour left.

I would have preferred a flight voucher and to hop on a different flight. Delayed over 6 hours.

More options for your flight to Southeast Asia

Complete your trip to Southeast Asia with a hotel stay or car rental