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KAYAK's insights & trends for flights to Southeast Asia

Get data-powered insights and trends for flights to Southeast Asia to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to Southeast Asia?

The cheapest ticket to Southeast Asia from Belgium found in the last 5 days was to Singapore, at ₱55,071 round-trip. The most popular route is Brussels Bruxelles-National Airport (BRU) to Bangkok Suvarnabhumi Airport (BKK) and the cheapest round-trip airline ticket found on this route in the last 5 days was ₱133,613.

What is the cheapest month to fly from Belgium to Southeast Asia?

The cheapest month for flights from Belgium to Southeast Asia is November, when tickets cost ₱28,884 (return) on average. On the other hand, the most expensive months are July and December, when the average cost of round-trip tickets is ₱45,589 and ₱42,656 respectively.

How far in advance should I book a flight from Belgium to Southeast Asia?

To get a below average price on the flight from Belgium to Southeast Asia, you should book around 3 weeks before departure, which saves you about 21% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low season

September
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly (20% more expensive on average)

FAQs for booking flights from Belgium to Southeast Asia

  • How does KAYAK find such low prices on flights from Belgium to Southeast Asia?

    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 Belgium to Southeast Asia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Belgium to Southeast Asia 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 Belgium to Southeast Asia?

    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 from Belgium to Southeast Asia with an airline and back with another airline.

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

    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 from Belgium to Southeast Asia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to Southeast Asia?

    Based on KAYAK data, the cheapest day to fly to Southeast Asia is Monday where round-trip tickets can be as cheap as ₱52,160. On the other hand, the most expensive day to fly is Thursday, where round-trip prices are ₱59,843 on average.

Reviews of the top 5 airlines flying from Belgium to Southeast Asia

 
Need help choosing which airline to fly with from Belgium 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.
8.2
Singapore AirlinesOverall score based on 1630 reviews
8.0Comfort
7.8Food
8.1Entertainment
8.3Boarding
8.6Crew
Airline reviews

This is THE BEST airline. I can see why they consistently win awards!

10.0 ExcellentWilliam, Oct 2026
Read more Singapore Airlines reviews

This is THE BEST airline. I can see why they consistently win awards!

The quality and the quantity of food was terrible. I was starving to death at the end of the flight. Used serve 3 meals long time ago, now reduced to 2 meals during the 17 hours flight. Never offered wine or tea to us. We have to ask . Extremely hard to get the attention of the flight attendants. They intentionally ignore us to minimize the service. Bathrooms were dirty

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 crew was very courteous and professional. the flight is relatively clean and comfortable.

a completely full flight - felt quite carmped in, despite being on the window seat. Meal served could better. Surely different from pre-covid trips I used to take to and from Bangkok.

The food wasn’t good at all. I skipped meals .

Very good flight from Boarding to landing -efficient and comfortable with decent entertainment options

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.

I had a great experience with Singapore airlines as always. The partner airline, Scoot was fine except my bag was misplaced during the shuffle. Ultimately, my baggage arrived intact. Attempting to inquire about my baggage was impossible.

Flying with Singapore airlines is always excelllent - the crew are lovely and the food too is great. It’s my number 1 airline

Better food quality and suggest using the 777 for the HKG-BOS leg instead of the A330 since the seat pitch seems better on the Boeing.

I liked the service. The touch screen needs improvement as well as movie choices.

great experience. better than all other airlines flying this route.

I didn't have much experience with Cathay Pacific airlines because of delay and missed connections, the bulk of the trip was on Japan Airlines.

Flight delayed first from bad weather, then after boarding there was a problem with the plane. We had to get off and onto another plane...connections were missed and the trip took an additional 10 hours!! Pre-paid seatting was not honored due ro last minute carrier changes. Most of the trip was on Japan Airline.

I have a Peanut Allergy and the Steward staff were very accommodating in ensuring my safety as my allergy is life threatening. Very professional and so vested in their profession.

Highly impressive. On time. Smooth and fast boarding and disembarkment. Really great service

Customer service was exceptional. I heard it wasn’t a great airline, my opinion has changed after flying with them

I like the paper menu with lists of food, so that I don’t need worry about to pick up the food I don’t like, because crews are busy to do food service, mostly not enough food information they can tell. Well, one of the lady was not friendly at all, I asked three times my daughter wants a cup noodle during the flight, she gave me the reason is they have half an hour for serving food three times. There are more than 200 people on the flight, it takes them more than hour and half to do food serving, think about it, how long we can get food, around two hours. I don’t like she gave a stupid reason other than to make a cup noodle right away. Unfriendly and lazy.

Not good. Flight was purchased for my father who needed medical assistance to board and transfer due to a heart condition. No one at Hong Kong from Cathay was there to assist and he barely made the connection. When I talked to him he could barely breath and was not sure he was going to make it. Really poor service even though the ticket stated he needed a wheelchair assistance.

The meals were not the greatest and lacking of appetite but everything else was spot on

Your staff was exceptional. Could teach the other airlines-rules on etiquette, and service. Excellent landings on flights, carried out by your pilots. Only complaint is long delay on return flight in Beijing, onto Vancouver.

Worst than I expected, crew was not attentive, meal was as disgusting , they didn’t even drink selections as they would to other passengers. I felt discriminated

UA is ok. But check in was a very bad experience

I hate that you cannot check in online and when you are at the airport, there aren't any aisle seats left. Also, they could work a little on subtitles for their movies (not everyone is a native English speaker).

Nothing to complain of, the only reason I am not giving better marks is that I am used to flying with ANA and they are the top.

I wish I had been able to choose a vegetarian meal. Crew friendly and helpful. Seat was ok. All quite efficient and pleasant. Would recommend for inner China travel for sure.

The flight is not bad, but the Business Lounge is not big enough for the quantity of people they accept and there is a limited options for food and beverages.

It was simply bad and on top of that my luggage hasn't been delivered until now. They can't even localize it which is just unacceptable when they are supposed to scan the bar code they put when we check in

We bought premium Economy, thinking it would be more comfortable, but the seat is so narrow ,that my legs and feet are swollen , I can't wear shoes !

Flew first class. Was excellent. Lovely crew. Seats were amazing and could convert to flat bed on the A320 we Flew. Good food and drinks choices.

This flight was a very good trip for us. The crew were very friendly and helpful. They made arrangements for my husband to have assistance in boarding. We were not expecting a meal, so it was a pleasant surprise on this short flight to have a meal and beverage from a very courteous crew.

The Qatar Airways staff pre-boarding and also on the flight from Dallas to Doha were incredibly mediocre and arrogant. Consider retraining these individuals Other flights were ok.

The rows of seats in economy class are seriously close to one another making eating and resting just about impossible - there is hardly any legroom. Anyone larger than average size would have an incredibly uncomfortable flight. I had to basically share my seat with the lady passenger next to me as she was too big to fit into her allotted seat.

After going through security and waiting for the flight at the gate, there was no access to bathrooms and no place to charge a phone while waiting for the flight. But once I was on the plane, everything was very good.

Very very poor service. Authorities must take action against this airline immediately. Total failure to follow the rules and regulations of an international airline

Service and boarding is good in brussels But in Qatar, boarding needs to be improved and waiting in very big queue for boarding. Parents with kids needs to be given some priority also.

Privacy and comfort of the QSuites is wonderful. The boarding process in Doha is cumbersome and confusing. As transfer passengers, traveling in Business Class, we went through security twice, including one at the gate requiring all electronic devices removed from bags and watches off, which are a great way to lose belongings as a few hundred people rush through to board the plane.

QSuites in Business Class are wonderful for long trips, providing privacy and comfort you have to experience to believe.

I moved to H row in the economy class. There was a crew member who's name might be shanya. She was not at all respectful for me. She was arrogant. While I was leaving the plane. The pilots and crew meter were saying Thank you and good bye to the passengers before and after me. And ignored Me.

Awful , hidden charges for the luggage was a very awful thing, very much a scam , booking the flight thinking the luggage was included was definitely a scam , then the girl that was taking my luggage Ayrlease the airport was an absolute awful , telling me if I don’t have money to take my luggage with me I can just throw it away , how professional, NEVER AGAIN .

1 hour delay meant missed my connecting flight and 1st day of holiday

It was mediocre. Honestly, the flight was late but that didn’t bother me as I had plenty of time. The only thing that bothered me is that the crew never asked to make the beds for us in business class. Maybe the crew was exhausted and that just didn’t occur to them.

From the start of my vacation at Logan Airport, Boston it was chaotic. I'm praying my flight home is better .I'm grateful that we landed safe

Nice crew , clean cabin , food was delayed due to problem with the quantity .

Kayak and Aran grant issuing business class tickets without lounge access and sometimes 1 or 2 connections in economy class. It’s very disappointing to find out that after buying the ticket. Never buy tickets on kayak and Aran grant again

It’s a business class ticket but they didn’t give a lounge access

Very delayed and uncomfortable seats. Nothing written in Urdu for Pakistanis. Tons of Pakistanis use the airline they should ensure the airline is accommodating them properly.

The food is good, but i am nit used to those foods so I can’t really be more detailed.

I could not book in online at all which is what I always do to secure a window seat which is my preference.

More options for your flight to Southeast Asia

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