Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from the United Kingdom to Southeast Asia from £281

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 2/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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.
Multiple Airlines Logo
17:00 - 02:35LGW-BKK
26h 35m1 stop
Multiple Airlines Logo
04:35 - 16:20BKK-LGW
18h 45m1 stop
£432Multiple Airlines
Find Deal
Tue, 18 Nov - Wed, 3 Dec
Hainan Airlines Logo
21:00 - 10:05LHR-BKK
30h 05m2 stops
Hainan Airlines Logo
01:35 - 17:55BKK-LHR
23h 20m2 stops
£432Hainan Airlines
Find Deal
Mon, 17 Nov - Sun, 7 Dec
Multiple Airlines Logo
17:00 - 02:35LGW-BKK
26h 35m1 stop
Multiple Airlines Logo
04:35 - 16:20BKK-LGW
18h 45m1 stop
£432Multiple Airlines
Find Deal
Tue, 18 Nov - Wed, 3 Dec
China Southern Logo
22:00 - 12:55LHR-BKK
31h 55m1 stop
China Southern Logo
13:55 - 18:35BKK-LHR
35h 40m1 stop
£433China Southern
Find Deal
Thu, 20 Nov - Mon, 8 Dec
China Southern Logo
22:00 - 17:05LHR-BKK
36h 05m1 stop
China Southern Logo
15:45 - 18:35BKK-LHR
33h 50m1 stop
£434China Southern
Find Deal
Sun, 2 Nov - Tue, 11 Nov
Air China Logo
22:10 - 01:25LHR-MNL
19h 15m1 stop
Air China Logo
06:20 - 17:50MNL-LHR
19h 30m1 stop
£436Air China
Find Deal
Tue, 11 Nov - Tue, 9 Dec
Air China Logo
22:10 - 01:25LHR-MNL
19h 15m1 stop
Air China Logo
06:20 - 17:50MNL-LHR
19h 30m1 stop
£437Air China
Find Deal
Tue, 4 Nov - Tue, 11 Nov
Etihad Airways Logo
13:55 - 19:35LHR-KUL
21h 40m1 stop
Etihad Airways Logo
21:40 - 14:30KUL-LHR
24h 50m1 stop
£481Etihad Airways
Find Deal
Mon, 3 Nov - Thu, 4 Dec
Etihad Airways Logo
13:55 - 08:05LHR-KUL
34h 10m1 stop
Etihad Airways Logo
09:35 - 12:05KUL-LHR
34h 30m1 stop
£487Etihad Airways
Find Deal
Thu, 6 Nov - Thu, 27 Nov
Cathay Pacific Logo
10:25 - 10:40MAN-BKK
17h 15m1 stop
Cathay Pacific Logo
15:05 - 07:55BKK-MAN
23h 50m1 stop
£556Cathay Pacific
Find Deal
Tue, 25 Nov - Tue, 9 Dec

Hainan Airlines flights from United Kingdom to Southeast Asia

Our best Hainan Airlines deals on United Kingdom to Southeast Asia flight tickets
Hainan Airlines
17 Nov
LHR21:00London Heathrow
30h 05m
2 stops
BKK10:05Bangkok Suvarnabhumi
7 Dec
BKK01:35Bangkok Suvarnabhumi
23h 20m
2 stops
LHR17:55London Heathrow
£432
Find similar
Hainan Airlines
31 Oct
LHR21:00London Heathrow
38h 05m
1 stop
BKK18:05Bangkok Suvarnabhumi
22 Nov
BKK01:35Bangkok Suvarnabhumi
23h 20m
1 stop
LHR17:55London Heathrow
£438
Find similar
Hainan Airlines
31 Oct
LHR21:00London Heathrow
38h 05m
2 stops
BKK18:05Bangkok Suvarnabhumi
13 Nov
BKK01:35Bangkok Suvarnabhumi
23h 00m
2 stops
LHR17:35London Heathrow
£441
Find similar

Norse Atlantic UK flights from United Kingdom to Southeast Asia

Our best Norse Atlantic UK deals on United Kingdom to Southeast Asia flight tickets
Norse Atlantic UK
23 Nov
LGW16:10London Gatwick
11h 15m
BKK10:25Bangkok Suvarnabhumi
15 Dec
BKK12:30Bangkok Suvarnabhumi
13h 00m
LGW18:30London Gatwick
£439
Find similar
Norse Atlantic UK
23 Nov
LGW16:10London Gatwick
11h 15m
BKK10:25Bangkok Suvarnabhumi
22 Dec
BKK12:30Bangkok Suvarnabhumi
13h 00m
LGW18:30London Gatwick
£458
Find similar
Norse Atlantic UK
25 Feb
MAN23:30Manchester
11h 30m
BKK18:00Bangkok Suvarnabhumi
12 Mar
BKK20:00Bangkok Suvarnabhumi
13h 15m
MAN02:15Manchester
£558
Find similar

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 3 October 2025.
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

LGW - BKK

LGWBKK

London Gatwick

Tue 18/11

17:00-02:35

1 stop26h 35m

Bangkok Suvarnabhumi

Wed 3/12

04:35-16:20

1 stop18h 45m

£432

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 17/11

21:00-10:05

2 stops30h 05m

Bangkok Suvarnabhumi

Sun 7/12

01:35-17:55

2 stops23h 20m

£432

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Tue 18/11

17:00-02:35

1 stop26h 35m

Bangkok Suvarnabhumi

Wed 3/12

04:35-16:20

1 stop18h 45m

£432

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 20/11

22:00-12:55

1 stop31h 55m

Bangkok Suvarnabhumi

Mon 8/12

13:55-18:35

1 stop35h 40m

£433

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 2/11

22:00-17:05

1 stop36h 05m

Bangkok Suvarnabhumi

Tue 11/11

15:45-18:35

1 stop33h 50m

£434

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Tue 11/11

22:10-01:25

1 stop19h 15m

Manila Ninoy Aquino Intl

Tue 9/12

06:20-17:50

1 stop19h 30m

£436

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Tue 4/11

22:10-01:25

1 stop19h 15m

Manila Ninoy Aquino Intl

Tue 11/11

06:20-17:50

1 stop19h 30m

£437

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Mon 3/11

13:55-19:35

1 stop21h 40m

Kuala Lumpur Intl

Thu 4/12

21:40-14:30

1 stop24h 50m

£481

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Thu 6/11

13:55-08:05

1 stop34h 10m

Kuala Lumpur Intl

Thu 27/11

09:35-12:05

1 stop34h 30m

£487

ManchesterBangkok

MAN - BKK

MANBKK

Manchester

Tue 25/11

10:25-10:40

1 stop17h 15m

Bangkok Suvarnabhumi

Tue 9/12

15:05-07:55

1 stop23h 50m

£556

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 £403. 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 £544.

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

Our data shows that Wednesday is the least expensive day to fly to Southeast Asia. Tickets to fly out on this day can be as low as £725. 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 £774.

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

At midday is the cheapest time of day to fly from United Kingdom to Southeast Asia when you can find flight prices for as low as £644. Flying to Southeast Asia at midday is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the evening because they tend to be around £755. 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 Manchester 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 £702 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 £648 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, Tue, Wed and Thu

Airports in Southeast Asia

1 airport
The fastest flight from United Kingdom to Southeast Asia takes 11h 15m
Direct flights go from United Kingdom to Southeast Asia on Monday, Tuesday, Wednesday and Thursday. There are no airlines offering direct flights..
There is 1 airport near Southeast Asia: 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
Hahn AirPriceFrom £273Free CancellationRating
2.5
4 reviews
Search Hahn Air flights
Norse Atlantic UKPriceFrom £287Free CancellationRating
7.2
50 reviews
Search Norse Atlantic UK flights
Turkmenistan AirlinesPriceFrom £290Free CancellationRating
10.0
2 reviews
Search Turkmenistan Airlines flights
IndiGoPriceFrom £422Free CancellationRating
6.9
485 reviews
Search IndiGo flights
Royal Brunei AirlinesPriceFrom £426Free CancellationRating
5.7
7 reviews
Search Royal Brunei Airlines flights
Juneyao AirlinesPriceFrom £439Free CancellationRating
8.0
4 reviews
Search Juneyao Airlines flights
Austrian AirlinesPriceFrom £440Free CancellationRating
7.6
851 reviews
Search Austrian Airlines flights
A.P.G.PriceFrom £466Free CancellationRating
0.0
Search A.P.G. flights
Royal JordanianPriceFrom £493Free CancellationRating
6.8
429 reviews
Search Royal Jordanian flights
TUI AirwaysPriceFrom £494Free CancellationRating
6.4
17 reviews
Search TUI Airways 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

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 2/11
Sun 9/11
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Southeast Asia

Popular Cities in Southeast Asia

Popular flights according to clicks in the last 7 days on momondo
Flights to Londonfrom £28
Flights to Bangkokfrom £315
Flights to New Yorkfrom £239
Flights to Dubaifrom £223
Flights to Manchesterfrom £28
Flights to Istanbulfrom £54
Flights to Islamabadfrom £333
Flights to Jeddahfrom £134
Flights to Manilafrom £426
Flights to New Delhifrom £296
Flights to Mumbaifrom £280
Flights to Lisbonfrom £31