฿10,749 Find Cheap Flights from the United Kingdom to Southeast Asia – Compare and Save

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KAYAK's insights & trends for flights to Southeast Asia

Get data-powered insights and trends into 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 the United Kingdom found in the last 5 days was to Bangkok Suvarnabhumi Airport, at ฿26,644 return. The most popular route is London Gatwick Airport (LGW) to Bangkok Suvarnabhumi Airport (BKK) and the cheapest return ticket found on this route in the last 5 days was ฿26,644.

What is the cheapest month to fly from the United Kingdom to Southeast Asia?

The cheapest month for flights from the United Kingdom to Southeast Asia is November, when tickets cost ฿17,094 (return) on average. On the other hand, the most expensive months are July and December, when the average cost of round-trip tickets is ฿28,007 and ฿26,890 respectively.

What is the cheapest time of day to fly to Southeast Asia?

The cheapest time of day to fly to Southeast Asia is generally at night, when retur flights cost ฿35,585 on average. The most expensive time of day to fly to Southeast Asia is generally in the morning, which is peak travel time and where the average cost of a ticket is ฿44,145.

How far in advance should I book a flight from the United Kingdom to Southeast Asia?

To get a below-average price on a flight from the United Kingdom to Southeast Asia, you should book around 2 weeks before departure, which saves you about 6% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Which is the cheapest airport to fly into in Southeast Asia?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Southeast Asia is Bangkok Suvarnabhumi Airport (BKK), with an average flight price of ฿24,526.

Good to know

Low season

August

Cheapest flight

฿10,749
Best time to beat the crowds but there is an average 11% increase in price.
Most popular time to fly (31% more expensive on average)
Flight from London Luton Airport to Bangkok Suvarnabhumi Airport

Flights from the United Kingdom to Southeast Asia: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from the United Kingdom to Southeast Asia 
MartinFlew with Singapore Airlines-Jan 2025
It’s a long time sitting in that seat so sit on a cushion!
Verified travelerFlew with แควนตัสแอร์เวย์-Sep 2024
Unless you’re flying Business or First Class, definitely take your own travel pillow - they make a difference.
OmarFlew with แควนตัสแอร์เวย์-May 2024
Qantas lounge was crowded. try other One World lounges
Verified travelerFlew with Singapore Airlines-Feb 2024
Flew with Singapore Airlines great experience and efficient transfer to next flight at Changi . Premium economy was worth the extra giving easier boarding and comfortable seats with more room.

FAQs for booking flights from the United Kingdom to Southeast Asia

  • How does KAYAK find such low prices on flights from the United Kingdom 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 the United Kingdom to Southeast Asia.

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

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

  • What is the Hacker Fare option on flights from the United Kingdom to Southeast Asia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from the United Kingdom 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 the United Kingdom 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 the United Kingdom 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 Wednesday when return tickets can be as cheap as ฿32,621. On the other hand, the most expensive day to fly is Thursday, when return prices are ฿38,276 on average.

Reviews of the top airline flying from the United Kingdom to Southeast Asia

 
Need help choosing which airline to fly with from the United Kingdom 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.
7.3
เอทิฮัดแอร์เวย์Overall score based on 1533 reviews
7.6Boarding
7.1Food
7.2Entertainment
7.3Comfort
7.8Crew
Airline reviews

Connection booked by Etihad was delayed and upon arrival to counter they closed it and denied boarding although there was still 15 minutes to go . Manager Karen was very rude and did not want to listen seems there as overbooking and canceling boarding was the only solution..

2.0 MediocreAmr, Jul 2026
Read more เอทิฮัดแอร์เวย์ reviews

Connection booked by Etihad was delayed and upon arrival to counter they closed it and denied boarding although there was still 15 minutes to go . Manager Karen was very rude and did not want to listen seems there as overbooking and canceling boarding was the only solution..

I booked tickets for a family of five and specifically paid extra to select our seats together. We spent nearly $1,000 extra (around $100 per seat) for extra legroom so we could sit near each other. However, despite paying for this, we ended up being separated on the flight. This caused a major issue for our family because my parents do not speak English and rely on me to translate and assist them during the journey. I do not understand why Etihad changed our reserved seats without explanation. I am extremely dissatisfied with this experience. I expect the airline to do better, and I am requesting a full refund for the seat selection fees we paid.

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

Etihad Check In counter/Station manager in Heathrow was bothering and not helpful at all. They are rude and not customer oriented

1 hour flight. No complaints. Some drinks would have been nice.

I am a larger than average person and in my opinion i don't think it's fair to allocate a window seat to anyone who is my size or larger, i was seated between 2 large passengers on a full aircraft. The guy in the window seat also occupied a portion of the middle seat (my seat) which made my experience of flying with etihad very cramped and uncomfortable, i was flying from Abu Dhabi to Bangkok. Had this been a airbus 380 it would have been better as the seats are larger but unfortunately it wasn't so i had to endure the 6+hrs unable to get any rest

It was worst flight ever of 26h. Poor service and seating. Flight from Abu Dhabi to Islamabad service and seating was worst ever. No tv extra.

Needs better seat for business class. My seat was falling apart. Also no WiFi on that flight

The business class experience is fantastic. The crew were polite but often unavailable even when I tried to call them! I even found myself bringing my used dishes and cutlery up to the crew because no one had come to collect it after over an hour.

Very very bad service very tight seats never ever flying with Etihad again

More options for your flight to Southeast Asia

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