S$ 337 Find Cheap Flights from the United Kingdom to Southeast Asia

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

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Southeast Asia
These are the airlines KAYAK users have selected most often from within our search results for flights to Southeast Asia
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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?

These are the best return prices found by users searching on KAYAK in the last 72 hours.
The cheapest ticket to Southeast Asia from the United Kingdom found in the last 72 hours was to Singapore, at S$ 359 return. The most popular route is London Gatwick Airport (LGW) to Singapore (SIN) and the cheapest return airline ticket found on this route in the last 72 hours was S$ 359.

What is the cheapest day to fly to Southeast Asia?

The average price of all flights from the United Kingdom to Southeast Asia clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to Southeast Asia is Tuesday when return tickets can be as cheap as S$ 1,185. On the other hand, the most expensive day to fly is Thursday, when return prices are S$ 1,396 on average.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from the United Kingdom to Southeast Asia, 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 the United Kingdom to Southeast Asia is June, when tickets cost S$ 1,417 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of round-trip tickets is S$ 2,378 and S$ 1,990 respectively.

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

The average price for all round-trip flights from the United Kingdom to Southeast Asia depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to Southeast Asia is generally in the evening, when round-trip flights cost S$ 871 on average. Morning departures are around 12% more expensive than evening flights, on average. The most expensive time of day to fly to Southeast Asia is generally in the afternoon, which is peak travel time and where the average cost of a ticket is S$ 1,008.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Southeast Asia, 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 the United Kingdom to Southeast Asia, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 21 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 S$ 594.

Good to know

Low season

June

High season

December

Cheapest flight

S$ 337
Best time to beat the crowds (9% less expensive on average)
Most popular time to fly (29% more expensive on average)
Flight from London Luton Airport to Singapore

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 AirlinesLHR-SINJan 2025
It’s a long time sitting in that seat so sit on a cushion!
Verified travelerFlew with Qantas AirwaysLHR-SINSept 2024
Unless you’re flying Business or First Class, definitely take your own travel pillow - they make a difference.
NorhayatiFlew with Malaysia AirlinesLHR-KULMar 2024
Take MH (Malaysia Airline) coz they are good
OmarFlew with Qantas AirwaysLHR-SINMay 2024
Qantas lounge was crowded. try other One World lounges
Verified travelerFlew with Singapore AirlinesLHR-SINFeb 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.

See more FAQs

Top 5 airlines serving from the United Kingdom to Southeast Asia

 
See real verified KAYAK customer reviews for airlines flying to Southeast Asia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from the United Kingdom to Southeast Asia. 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 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.
8.1
Singapore AirlinesOverall score based on 1288 reviews
8.0Entertainment
7.7Food
8.2Boarding
7.9Comfort
8.6Crew
Airline reviews

Horrendous. We upgraded and they took the money but cancelled one of our tickets. The recline action didn’t work on the seats for the flight from Singapore to London, pre booked meals but they seemed to have disappeared as well.. Phone customer service was horrendous. Took 5 phone calls and no fix. Craig at the airport was the only one who seemed to be able to get the ticket back.

2.0 MediocreKylie, Apr 2025CNS - SIN
Read more Singapore Airlines reviews

Horrendous. We upgraded and they took the money but cancelled one of our tickets. The recline action didn’t work on the seats for the flight from Singapore to London, pre booked meals but they seemed to have disappeared as well.. Phone customer service was horrendous. Took 5 phone calls and no fix. Craig at the airport was the only one who seemed to be able to get the ticket back.

The seat in economy class and legroom in Singapore airline are narrower than Korean airlines! I don’t have that comforting feeling flying with Singapore air as in the past!

Everything was great keep up the good work 😁, can't ask for more.

Really enjoyed the flight. Our flight attendant on the way back SIN-LAX was exceptional I didn’t get her name but she was so kind and went above and beyond to make sure I was comfortable. I had a bit of a panic attack and she checked on me a few times to make sure I was ok. Really appreciated her attention and service. Thank u

Timing very good from sfo to Singapore and service was awesome and economy class seats are great overall very good experience thanks

The seats were more narrow than at other lines. Food was mediocre (economy class)

The crew have great customer service but their economy seating isn’t the most comfortable for a 220lbs+ guy and the food wasn’t bad, but wasn’t exceptional, either.

Food option Hindu veg to Hindu non veg request was unheard

This flight was 16 hours and they made it very tolerable. Seats were comfortable and the staff very accommodating. I had plenty of inflight entertainment. Food was very good.

Service excellent would chose Singapore airlines as my first choice

The cushion of the seats are old and very thin. The food can be more tasty or come with salt packages

I haven't flown Swiss in a long time. I was disappointed that after paying $14,907 for 3 business class seats, we still had to pay another $200 for a single business class seat. All the window seats used to be single seats. Now it's every other one and if you want a single seat it's extra. Also, The double seats do not have pods or any privacy. We landed in Chicago after a long 10 hour flight and our connecting flight was on United. Because we do not have status on Swiss, we were not allowed to use the United lounge, even with business class seats. My father is on crutches and we had a 4 hour layover. No lounge was also disappointing. All of my status is on British Airways so I will go back to flying BA. We flew Swiss because my father did not want to go through Heathrow. On a positive, the crew were super nice and accommodating for my father who had recently had hip replacement surgery. Food was okay. I"m not a good person to critique the food, I never like airplane food.

My luggage did not make the connection and 4 days later I still have not received it.

I took this flight to be able to fly with Swiss instead of Air Canada from Geneva.. The AC planes have a better outfit in Business class than Swiss, but the service aboard Swiss is really best, first-class, as is the food and beverages. Though using the same plane model (A330-300), the interior setup of the cabin starts to show its age, but IMO the planes are better serviced by Swiss than AC. I had in my recent trips with AC way too many technical problems that led to delays or even complete cancellation of my flight.. Their fleet is aging (average 20+ years) and the maintenance has taken a toll compared to years ago. Cutting costs in every corner has to be paid sometime by someone, and it's the travelers at the end that pays for it. Unfortunately for me, flying directly to Zurich puts a much longer after-fly trip on me than Geneva.. so I might go back to direct flight YUL-GVA, even if I don't like flying with AC.

We are flying with Swiss for a long time but this time was terrible do to are flight cancellations we are in some bad hotel with out normal food

Terrible plane small airbus good for a 1 hr trip I booked business as it is. A night flight and 4hrs trip it was an ordinary economy seat with no one next to me what a joke what a stupid decision to buy business

For the price of the ticket it's probably the best service in the world

Everything was great except food . It as okay not good not bad

Seats are too cramped, but that is a problem with every airline. I actually enjoyed the meal served.

better announcing at the gate prior to boarding and better organization of various gps

Did not have to leave plane. However found the wait tiring with nearly a full plane boarding at Male and being unable to get out of seat due to cleaners security and a full plane boarding with hand luggage. Staff were excellent despite a long and tiring flight due to stopover.

Everything about our return trip from Colombo to Manchester was excellent. Staff were brilliant all flights. Return flights on time and all staff were brilliant. The outbound journey however was marred by cancellation of Man to Bahrain flight. No information or staff assistance. Customer Service none existent. Told to make own arrangements by none interested or understanding telephone staff who said to make own hotel arrangements and be reimbursed. CS refused to reimburse hotel or lost lounge booking or taxi fees.

The boarding was late. The check-in board said boarding closed but the boarding hadn't even started. I have spine issue but not eligible for wheelchair since I can walk. But we were taken to a plane with stairs to climb. I requested support with the handcarry and was told that I shouldn't have booked this flight without wheelchair. Instead this information should be public if this plane has sky bridge or stairs. The infotainment system did not work either. And the plane was very loud with very less legroom in economy.

Very poor experience, passengers and were not social and started a troubled with other passengers and a fight erupted

Worst flight ever.service was extremely poor and food taste was horrible.Served me mashed potatoes and chicken calling it Briyani.

From the start of the check-in process, the associate was unprofessional and claimed that my ticket was incorrect, attributing the issue to Gulf Air. However, they failed to provide any clear explanation of what was wrong. After an extended wait of 45 minutes, the issue was resolved, and we were finally issued our boarding passes. Upon arrival in Paris, we faced further delays as the stairs to deplane were not functioning, resulting in an additional 45-minute wait onboard. This delay posed a significant risk of missing my connecting flight.

Had to discuss more than 15 min regarding wheelchair they gave only at the start location. No food serv in 1 st flight. Considering flight started at 10:00 pm so had to starve for dinner. Checkin screw was polite. Food in 2 nd and 3 rd flights was not good. It was too cold in the flights. Had to ask for blankets. Missed quality all thru, though the fare was on higher side

Food could have been better Entertainment was absent even in Business Class

I like it very much. Gulf Air is always the topper rank of the world. I love it very much.

The drinks should come before food. Unable to have any fluid unless after food. Thanks

Smooth Flight, Friendly crew, food offering on board was limited.

When we went to the lounge they told us to go into the main lounge and not the full business class section, later they told me that Lufthansa wont pay the full fee to alloq the business class passengers entry to the nicer sectikn where all the other airlines nusiness class passengers go into. Very poor arrangement.

Not what I expected for the last leg of a $5100 business class experience. Boarding was a nightmare. The flight was delayed and I had to keep checking my email to ensure I was at the right gate since the airline or the terminal had no clue until 15 mins prior to boarding. Food was gross, limited drink options.

Flights scheduled with impossible connections - Lufthansa apparently believes it takes 7mins to change terminals, go through passport control, re-clear security and walk 1.8kms…..and everything will work perfectly (which it never does at Frankfurt). No staff on hand to assist with transfers on delayed flights. No transfer guidance provided by app. No compensation offered for 6hr delay to connecting flight.

Crew were friendly and very helpful Plane was clean and the legroom is standard. Overall a good flight, no complaints.

Had to put carry ons under seat and had no legroom!!!

It was a very full flight, makes it harder for flight crew.

My mother is 87 years old and has knee problems. I have reserved a wheelchair indicating that she is immobile. For her it is very difficult to walk short distances. On arrival in Frankfurt, I was called via my mother's phone, by the female employee who had my mother in a wheelchair. She asked me how many and what color suitcases she has, which I explained. I was very surprised when 15 minutes later my mother walked out with her cane and balancing with great difficulties assisted by a young couple who were pushing her suitcase. Where was the wheelchair and the airport employee? I find this to be a disrespectful and abusive behavior of elderly people. It also raises the question of professional misconduct of the airport personnel in Frankfurt i.e. the female employee who abandoned an 87 year old immobile person by the luggage lane. I would like to inquire about the details i.e. name of that employee.

Flight from Washington to Munich it was disappointing. I do not get the seat for what i pay. And the crew were rude with people which speaks other languages than german!

Well,I miss a flight to Stl with United,they send me to Stl with a different airline, but same day,which was great

I have noticed that the airlines, including this flight, pretend there is going to be turbulence, announce such, and say they can’t do beverage service. There is no turbulence and the seat belt light goes off 10 minutes before they ask for tray tables up and seat belts back on. They are just trying to spend less money and it’s quite transparent

Very quick boarding. I was surprised we only got a small water and small thing of cookies, everything else was for purchase. No entertainment. Crew was excellent though.

Flight delayed in terms of boarding and Kayak was great in updating but the team on the groping at British Airways were really poor

A basic tea/ coffee and a snack could be provided especially for long distance flyers.

The information in the airport, and the app was different. Be aware. Different terminals in Stuttgart, so we had to walk a lot. It's a small airport so it wasn't a big deal, but it was ludicrous to see the error in the app.

Flight was delayed and there was boarding pass and flight information errors resulting in confusion and stress

Food was terrible , crew were excellent , IFE was dire . Overall comfortable seat and cabin. Nothing special .

No longer a premium carrier and no better than the low cost .

If my tv wasn’t broken and I wasn’t in a seat that didn’t allow for sleeping

Very long and took extra push back to BA staff to get a realistic flight after they made me miss my original direct flight. Eventually landed 9 hours late and incurred many extra costs with other missed bookings

Book cheap flights from the United Kingdom to Southeast Asia

Recent return flight deals

 
These are the cheapest return flights to Southeast Asia found on KAYAK in the last 72 hours.
7-5Wed
1 stopShenzhen Airlines
21h 35mLHR-SIN
27-5Tue
1 stopShenzhen Airlines
23h 20mSIN-LHR
S$ 695
30-5Fri
1 stopShenzhen Airlines
30h 50mLHR-SIN
6-6Fri
1 stopShenzhen Airlines
32h 40mSIN-LHR
S$ 701
30-5Fri
1 stopShenzhen Airlines
21h 35mLHR-SIN
5-6Thu
1 stopShenzhen Airlines
23h 20mSIN-LHR
S$ 703
7-5Wed
1 stopGulf Air
17h 55mLGW-SIN
15-5Thu
1 stopGulf Air
17h 55mSIN-LGW
S$ 707
29-4Tue
1 stopGulf Air
19h 20mLHR-SIN
14-5Wed
1 stopGulf Air
26h 20mSIN-LHR
S$ 728
15-9Mon
1 stopSWISS
20h 25mMAN-SIN
28-9Sun
1 stopSWISS
20h 30mSIN-MAN
S$ 790
1-6Sun
1 stopSWISS
25h 20mMAN-SIN
12-6Thu
1 stopSWISS
15h 35mSIN-MAN
S$ 794
9-5Fri
directBritish Airways
13h 30mLHR-SIN
25-5Sun
directBritish Airways
14h 10mSIN-LHR
S$ 840
9-5Fri
directBritish Airways
13h 30mLHR-SIN
25-5Sun
directBritish Airways
14h 10mSIN-LHR
S$ 844
2-9Tue
directSingapore Airlines
13h 10mLHR-SIN
8-10Wed
directSingapore Airlines
13h 35mSIN-LHR
S$ 916

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to Southeast Asia found on KAYAK in the last 72 hours.
6-5Tue
1 stop
36h 00mLTN-SIN
S$ 337
29-4Tue
1 stop
29h 40mLGW-SIN
S$ 342
30-4Wed
1 stopGulf Air
17h 55mLGW-SIN
S$ 482
20-4Sun
1 stopGulf Air
17h 55mLGW-SIN
S$ 499
29-5Thu
directSingapore Airlines
13h 05mLGW-SIN
S$ 507
26-5Mon
directSingapore Airlines
13h 05mLHR-SIN
S$ 516
26-8Tue
1 stopLufthansa
15h 55mMAN-SIN
S$ 643
25-8Mon
1 stopLufthansa
26h 50mMAN-SIN
S$ 645
29-5Thu
1 stopSWISS
25h 15mMAN-SIN
S$ 654
14-5Wed
1 stopSWISS
15h 25mMAN-SIN
S$ 686

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Last minute flights to Southeast Asia

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to Southeast Asia that are departing in the next 10 days.
16-4Wed
multi-stopChina Eastern
20h 30mLGW-SIN
9-5Fri
multi-stopChina Eastern
21h 05mSIN-LGW
S$ 756
18-4Fri
multi-stopChina Eastern
21h 00mLGW-SIN
3-5Sat
multi-stopChina Eastern
36h 45mSIN-LGW
S$ 757
20-4Sun
multi-stopGulf Air
17h 55mLGW-SIN
6-5Tue
multi-stopGulf Air
17h 55mSIN-LGW
S$ 886
20-4Sun
multi-stopGulf Air
19h 20mLHR-SIN
30-5Fri
multi-stopGulf Air
26h 20mSIN-LHR
S$ 924
19-4Sat
multi-stopBritish Airways
24h 10mMAN-SIN
13-5Tue
multi-stopBritish Airways
20h 50mSIN-MAN
S$ 1,073
20-4Sun
directBritish Airways
13h 30mLHR-SIN
6-5Tue
directBritish Airways
14h 10mSIN-LHR
S$ 1,261
16-4Wed
directSingapore Airlines
13h 05mLGW-SIN
10-5Sat
directSingapore Airlines
13h 30mSIN-LGW
S$ 1,326
20-4Sun
directSingapore Airlines
13h 05mLGW-SIN
6-5Tue
directSingapore Airlines
13h 30mSIN-LGW
S$ 1,720
20-4Sun
multi-stopSWISS
14h 45mLCY-SIN
6-5Tue
multi-stopSWISS
16h 20mSIN-LCY
S$ 1,995
20-4Sun
multi-stopSWISS
14h 45mLCY-SIN
6-5Tue
multi-stopSWISS
16h 20mSIN-LCY
S$ 1,996

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Everything you need to know for your flight to Southeast Asia

Cabin class types available on flights to Southeast Asia

Cabin classes available on flights to Southeast Asia. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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