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Cheap flights from the United Kingdom to Southeast Asia from £270

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to Southeast Asia departing on 2/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from the United Kingdom to Southeast Asia

Recent return flight deals from the United Kingdom to Southeast Asia

Enter your travel dates to find the best prices.
Hainan Airlines Logo
22:00 - 10:00
LHR
-
BKK
30h 00m
2 stops
Hainan Airlines Logo
19:20 - 19:30
BKK
-
LHR
30h 10m
2 stops
£412Hainan Airlines
Mon, 1 Jun - Sun, 5 Jul
Shenzhen Airlines Logo
21:10 - 11:10
LHR
-
BKK
31h 00m
1 stop
Shenzhen Airlines Logo
19:30 - 19:10
BKK
-
LHR
30h 40m
1 stop
£412Shenzhen Airlines
Fri, 6 Mar - Fri, 13 Mar
Air China Logo
12:35 - 18:20
LGW
-
BKK
23h 45m
1 stop
Air China Logo
19:35 - 06:35
BKK
-
LGW
17h 00m
1 stop
£413Air China
Thu, 21 May - Thu, 4 Jun
Shenzhen Airlines Logo
22:05 - 02:15
LHR
-
BKK
22h 10m
1 stop
Shenzhen Airlines Logo
19:30 - 19:50
BKK
-
LHR
30h 20m
1 stop
£413Shenzhen Airlines
Fri, 1 May - Fri, 8 May
Air China Logo
11:05 - 01:30
LGW
-
BKK
31h 25m
1 stop
Air China Logo
02:30 - 06:55
BKK
-
LGW
35h 25m
1 stop
£415Air China
Tue, 10 Mar - Wed, 25 Mar
China Southern Logo
22:10 - 16:45
LHR
-
MNL
35h 35m
1 stop
China Southern Logo
11:55 - 16:15
MNL
-
LHR
35h 20m
2 stops
£499China Southern
Wed, 8 Apr - Sat, 2 May
China Southern Logo
21:00 - 16:45
LHR
-
MNL
36h 45m
2 stops
China Southern Logo
11:55 - 19:00
MNL
-
LHR
38h 05m
1 stop
£501China Southern
Fri, 8 May - Thu, 4 Jun
Kuwait Airways Logo
15:45 - 17:20
LHR
-
MNL
17h 35m
1 stop
Kuwait Airways Logo
22:00 - 09:00
MNL
-
LHR
19h 00m
1 stop
£503Kuwait Airways
Wed, 4 Mar - Tue, 24 Mar
Etihad Airways Logo
20:55 - 19:35
LHR
-
KUL
14h 40m
1 stop
Etihad Airways Logo
09:35 - 14:30
KUL
-
LHR
36h 55m
1 stop
£518Etihad Airways
Thu, 5 Mar - Sun, 8 Mar
Etihad Airways Logo
21:45 - 19:45
LHR
-
KUL
15h 00m
1 stop
Etihad Airways Logo
09:50 - 18:45
KUL
-
LHR
15h 55m
1 stop
£521Etihad Airways
Wed, 29 Apr - Wed, 13 May

Hainan Airlines flights from United Kingdom to Southeast Asia

Our best Hainan Airlines deals on United Kingdom to Southeast Asia flight tickets
Hainan Airlines
1 Jun
LHR22:00London Heathrow
30h 00m
2 stops
BKK10:00Bangkok Suvarnabhumi
5 Jul
BKK19:20Bangkok Suvarnabhumi
30h 10m
2 stops
LHR19:30London Heathrow
£412
Hainan Airlines
2 Mar
LHR21:00London Heathrow
30h 05m
1 stop
BKK10:05Bangkok Suvarnabhumi
15 Mar
BKK19:10Bangkok Suvarnabhumi
29h 45m
1 stop
LHR17:55London Heathrow
£413
Hainan Airlines
6 May
LHR22:00London Heathrow
30h 00m
1 stop
BKK10:00Bangkok Suvarnabhumi
31 May
BKK11:05Bangkok Suvarnabhumi
38h 25m
2 stops
LHR19:30London Heathrow
£417

Shenzhen Airlines flights from United Kingdom to Southeast Asia

Our best Shenzhen Airlines deals on United Kingdom to Southeast Asia flight tickets
Shenzhen Airlines
6 Mar
LHR21:10London Heathrow
31h 00m
1 stop
BKK11:10Bangkok Suvarnabhumi
13 Mar
BKK19:30Bangkok Suvarnabhumi
30h 40m
1 stop
LHR19:10London Heathrow
£412
Shenzhen Airlines
1 May
LHR22:05London Heathrow
22h 10m
1 stop
BKK02:15Bangkok Suvarnabhumi
8 May
BKK19:30Bangkok Suvarnabhumi
30h 20m
1 stop
LHR19:50London Heathrow
£413
Shenzhen Airlines
24 Apr
LHR22:05London Heathrow
38h 25m
1 stop
BKK18:30Bangkok Suvarnabhumi
1 May
BKK03:15Bangkok Suvarnabhumi
22h 35m
1 stop
LHR19:50London Heathrow
£415

momondo Fare Finder

 
Customise your flight search to find flights from United Kingdom to Southeast Asia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 22 February 2026.
Use the filters below to find and compare flights from the United Kingdom to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 1/6

22:00-10:00

2 stops30h 00m

Bangkok Suvarnabhumi

Sun 5/7

19:20-19:30

2 stops30h 10m

£412

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 6/3

21:10-11:10

1 stop31h 00m

Bangkok Suvarnabhumi

Fri 13/3

19:30-19:10

1 stop30h 40m

£412

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Thu 21/5

12:35-18:20

1 stop23h 45m

Bangkok Suvarnabhumi

Thu 4/6

19:35-06:35

1 stop17h 00m

£413

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 1/5

22:05-02:15

1 stop22h 10m

Bangkok Suvarnabhumi

Fri 8/5

19:30-19:50

1 stop30h 20m

£413

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Tue 10/3

11:05-01:30

1 stop31h 25m

Bangkok Suvarnabhumi

Wed 25/3

02:30-06:55

1 stop35h 25m

£415

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Wed 8/4

22:10-16:45

1 stop35h 35m

Manila Ninoy Aquino Intl

Sat 2/5

11:55-16:15

2 stops35h 20m

£499

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Fri 8/5

21:00-16:45

2 stops36h 45m

Manila Ninoy Aquino Intl

Thu 4/6

11:55-19:00

1 stop38h 05m

£501

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Wed 4/3

15:45-17:20

1 stop17h 35m

Manila Ninoy Aquino Intl

Tue 24/3

22:00-09:00

1 stop19h 00m

£503

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Thu 5/3

20:55-19:35

1 stop14h 40m

Kuala Lumpur Intl

Sun 8/3

09:35-14:30

1 stop36h 55m

£518

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Wed 29/4

21:45-19:45

1 stop15h 00m

Kuala Lumpur Intl

Wed 13/5

09:50-18:45

1 stop15h 55m

£521

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Southeast Asia from

How to get the cheapest flight ticket from United Kingdom to Southeast Asia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Southeast Asia?

The month of May is, on average, the cheapest month to fly to Southeast Asia from United Kingdom, with most prices found around £383. If you are unable to visit Southeast Asia during the month of May, then departing from United Kingdom during the month September is also very affordable. Most momondo users find prices during this month for around £538.

What is the cheapest day to depart on your flight to Southeast Asia?

Our data shows that Tuesday is the least expensive day to fly to Southeast Asia. Tickets to fly out on this day can be as low as £716. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Southeast Asia on Saturday is £772.

What is the cheapest time of day to depart on your flight to Southeast Asia?

In the evening is the cheapest time of day to fly from United Kingdom to Southeast Asia when you can find flight prices for as low as £734. Flying to Southeast Asia in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around £742. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest United Kingdom to Southeast Asia flight route?

Fly from London Gatwick to Bangkok Suvarnabhumi for the best United Kingdom - Southeast Asia flight prices

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

You are more likely to see cheaper flights to Southeast Asia from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around £696 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southeast Asia from United Kingdom for as low as £655 on momondo.

What cabin class options are available on United Kingdom to Southeast Asia flights?

There are 4 cabin classes available to choose from on United Kingdom to Southeast Asia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on United Kingdom to Southeast Asia flights?

No. A direct flight is the cheapest option for a flight between United Kingdom to Southeast Asia.

Cheap United Kingdom to Southeast Asia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United Kingdom to Southeast Asia

Fastest flight time

11h 15m

Direct flights

Mon, Wed, Thu and Sat

Airports in Southeast Asia

295 airports
The fastest flight from United Kingdom to Southeast Asia takes 11h 15m
Direct flights go from United Kingdom to Southeast Asia on Monday, Wednesday, Thursday and Saturday. There are no airlines offering direct flights..
There are 295 airports in Southeast Asia. From United Kingdom there are direct flights to Bangkok Suvarnabhumi (BKK).
Search flight deals

  • When did momondo last update prices for flights from United Kingdom to Southeast Asia?

    Prices for flights from United Kingdom to Southeast Asia were last updated today.

  • How many operators does momondo search for flights from United Kingdom to Southeast Asia?

  • How old do you have to be to fly from United Kingdom to Southeast Asia?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United Kingdom to Southeast Asia.

  • What documentation or ID do you need to fly to Southeast Asia?

    The travel and health documents you'll need for your trip to Southeast Asia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Southeast Asia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from United Kingdom to Southeast Asia?

Best airlines flying from United Kingdom to Southeast Asia

Compare and see reviews for airlines that fly from United Kingdom to Southeast Asia with momondo
Airline
Rating
Free Cancellation
Price
Turkmenistan AirlinesPriceFrom £267Free CancellationRating
0.0
0 reviews
Search Turkmenistan Airlines flights
Hahn AirPriceFrom £273Free CancellationRating
0.0
Search Hahn Air flights
Scandinavian AirlinesPriceFrom £282Free CancellationRating
7.3
1,697 reviews
Search Scandinavian Airlines flights
China AirlinesPriceFrom £338Free CancellationRating
8.3
807 reviews
Search China Airlines flights
ITA AirwaysPriceFrom £364Free CancellationRating
6.7
1,151 reviews
Search ITA Airways flights
Royal JordanianPriceFrom £406Free CancellationRating
6.7
454 reviews
Search Royal Jordanian flights
Royal Brunei AirlinesPriceFrom £425Free CancellationRating
0.0
0 reviews
Search Royal Brunei Airlines flights
CondorPriceFrom £433Free CancellationRating
6.5
401 reviews
Search Condor flights
A.P.G.PriceFrom £465Free CancellationRating
0.0
Search A.P.G. flights
Air ArabiaPriceFrom £468Free CancellationRating
7.7
56 reviews
Search Air Arabia flights

Why use momondo?

Why should I use momondo to find a flight deal from United Kingdom to Southeast Asia?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from United Kingdom to Southeast Asia. momondo saves you time and could save you money on your trip.

Can I find flights from United Kingdom to Southeast Asia with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for United Kingdom to Southeast Asia flights to just show those with flexible booking policies.

How can momondo help me find flights from United Kingdom to Southeast Asia?

momondo provides multiple filters to help you find the best flight to Southeast Asia from United Kingdom. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from United Kingdom to Southeast Asia right now. Can momondo alert me if prices change?

If you are not ready to book a flight from United Kingdom to Southeast Asia now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Southeast Asia and let you know when they change.

An easier way to manage your Southeast Asia trip

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