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£244+ Cheap flights to Southeast Asia

— BKK
30 Sep — 7 Oct1
1 adult
1 adult, Economy, 0 bags

Flights to Southeast Asia in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Southeast Asia

Mon 7/922:40 -
1 stop18h 40m
Fri 2/1006:25 -
1 stop18h 15m
Deal found 29/8£423
Tue 15/922:00 -
1 stop20h 30m
Wed 30/906:25 -
1 stop18h 15m
Deal found 30/8£423
Wed 2/922:40 -
1 stop18h 40m
Wed 9/906:25 -
1 stop21h 00m
Deal found 27/8£424
Tue 22/922:40 -
1 stop18h 40m
Fri 2/1006:25 -
1 stop18h 15m
Deal found 26/8£425
Fri 4/1221:10 -
1 stop20h 30m
Sat 26/1202:55 -
1 stop24h 15m
Deal found 28/8£425
Sat 19/922:40 -
1 stop18h 40m
Wed 30/906:25 -
1 stop18h 15m
Deal found 27/8£428
Thu 3/922:40 -
1 stop18h 40m
Wed 30/906:25 -
1 stop18h 15m
Deal found 30/8£428
Thu 12/1121:20 -
Nonstop11h 45m
Tue 15/1223:05 -
Nonstop13h 20m
Deal found 28/8£428
Fri 20/1122:00 -
1 stop20h 05m
Sun 6/1211:25 -
1 stop38h 10m
Deal found 31/8£428
Mon 21/920:35 -
2 stops34h 00m
Tue 29/922:35 -
2 stops22h 00m
Deal found 29/8£428
Tue 22/908:15 -
2 stops22h 20m
Tue 29/922:35 -
2 stops24h 05m
Deal found 30/8£428
Tue 1/922:00 -
1 stop20h 30m
Thu 1/1006:25 -
1 stop18h 15m
Deal found 29/8£429

Find flights to Southeast Asia

Explore Southeast Asia
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Find flight deals to Southeast Asia

Return from

£428

One-way from

£244

Popular in

December

Cheapest in

September

Average price

£691
British Airways
  • British Airways
  • 12/11-15/12
  • Nonstop
  • 25h 05m total
  • London to Bangkok
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Air China
  • Air China
  • 20/9
  • 1 total stop
  • 39h 30m total
  • London to Southeast Asia
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£49 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£22 potential savings vs. average return price).
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Average for return flights in August 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights to Southeast Asia that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

LondonKuala Lumpur

LHR London Heathrow - KUL Kuala Lumpur Intl

LHRKUL

London Heathrow

Tue 22/9

22:00-02:05

1 stop21h 05m

Kuala Lumpur Intl

Thu 22/10

03:05-20:00

1 stop23h 55m

£510

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Mon 2/11

13:20-17:05

2 stops20h 45m

Bangkok Suvarnabhumi

Tue 1/12

07:30-21:25

2 stops20h 55m

£541
Fastest return journey

LondonBangkok

LGW London Gatwick - BKK Bangkok Suvarnabhumi

LGWBKK

London Gatwick

Tue 1/12

12:40-07:20

Nonstop11h 40m

Bangkok Suvarnabhumi

Tue 15/12

14:50-21:05

Nonstop13h 15m

£543

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Thu 15/10

22:00-11:10

1 stop31h 10m

Bangkok Suvarnabhumi

Sun 6/12

02:20-19:10

1 stop23h 50m

£559

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Sat 5/12

17:30-10:35

2 stops34h 05m

Bangkok Suvarnabhumi

Sun 17/1

12:35-09:20

1 stop27h 45m

£582

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Wed 6/1

13:20-17:05

2 stops20h 45m

Bangkok Suvarnabhumi

Sun 24/1

18:20-13:45

2 stops26h 25m

£589

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Wed 30/9

19:25-16:10

Nonstop13h 45m

Singapore Changi

Wed 21/10

23:25-06:35

Nonstop14h 10m

£591

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Fri 11/9

19:25-16:10

Nonstop13h 45m

Singapore Changi

Fri 25/9

23:25-06:35

Nonstop14h 10m

£592

LondonSingapore

LHR London Heathrow - SIN Singapore Changi

LHRSIN

London Heathrow

Sat 31/10

18:45-16:05

Nonstop13h 20m

Singapore Changi

Sun 15/11

23:05-05:25

Nonstop14h 20m

£594

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Thu 21/1

14:20-18:00

2 stops20h 40m

Bangkok Suvarnabhumi

Mon 22/2

16:20-10:45

2 stops25h 25m

£598

Flights are sorted by cheapest return flights first.

Deals found on 28/8

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight to Southeast Asia

How long is the flight to Southeast Asia?

On average, a flight from London to Southeast Asia takes 23 hours 25 minutes. Flights to Southeast Asia from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

Weekly flight availability to Southeast Asia

The most flights from London to Southeast Asia are scheduled on a Tuesday (11 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).

What are the most popular airlines that fly to Southeast Asia?

The most popular airlines flying from London to Southeast Asia are Etihad Airways, Qatar Airways and Singapore Airlines.

Etihad Airways
Etihad Airways
From £315
Qatar Airways
Qatar Airways
From £436
Emirates
Emirates
From £342
Singapore Airlines
Singapore Airlines
From £186

What are the cheapest airlines that fly to Southeast Asia?

The cheapest airlines flying from London to Southeast Asia are HK Express, AirAsia X and Bangkok Airways.

Rainfall in Southeast Asia by month

In terms of precipitation, rainfall in Southeast Asia ranges from 10.0 - 320.0 inches per month. September is typically the wettest month, when rainfall can reach 320.0 mm. January is typically the driest time to visit Southeast Asia when rainfall is around 10.0 mm.

Temperature in Southeast Asia by month

If weather is an important factor for your trip to Southeast Asia, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 30.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.0 C).

When is the best time to book a flight to Southeast Asia?

Booking 45 days in advance of your planned departure date is, on average, the best time to get cheap flights to Southeast Asia. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

When is the cheapest time to fly to Southeast Asia?

Users looking for the lowest fares to Southeast Asia should consider flying on Tuesday at midday, when prices are typically cheapest. Budget-minded travellers will want to avoid Friday at midday, when prices are usually at their highest.

Reviews of airlines servicing Southeast Asia

Read through reviews of airlines serving Southeast Asia, such as Singapore Airlines,Cathay Pacific, andQatar Airways. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.2
Very Good
1,591 reviews
Check prices

Comfort

8.0

Overall

8.2

Crew

8.6

Food

7.8

Boarding

8.3

Entertainment

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Singapore Airlines
8.2
Very Good
1,591 reviews
Singapore Airlines
8.2
Very Good
1,591 reviews
Check prices

Comfort

8.0

Overall

8.2

Crew

8.6

Food

7.8

Boarding

8.3

Entertainment

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Cathay Pacific
7.6
Good
1,466 reviews
Singapore Airlines
8.2
Very Good
1,591 reviews
Check prices

Comfort

8.0

Overall

8.2

Crew

8.6

Food

7.8

Boarding

8.3

Entertainment

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Qatar Airways
7.4
Good
3,722 reviews
Singapore Airlines
8.2
Very Good
1,591 reviews
Check prices

Comfort

8.0

Overall

8.2

Crew

8.6

Food

7.8

Boarding

8.3

Entertainment

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Air China
7.4
Good
163 reviews
Singapore Airlines
8.2
Very Good
1,591 reviews
Check prices

Comfort

8.0

Overall

8.2

Crew

8.6

Food

7.8

Boarding

8.3

Entertainment

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Etihad Airways
7.3
Good
1,529 reviews
Singapore Airlines
8.2
Very Good
1,591 reviews
Check prices

Comfort

8.0

Overall

8.2

Crew

8.6

Food

7.8

Boarding

8.3

Entertainment

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered

FAQs about flying to Southeast Asia

  • Can I find cheaper flights to Southeast Asia if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Southeast Asia on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Southeast Asia?

    Based on reviews from Cheapflights users, HK Express is rated the highest out of the airlines that fly to Southeast Asia.

  • How much is a return flight to Southeast Asia?

    A return flight to Southeast Asia will typically cost around £262, however they can be found for as little as £35.

  • Where does the fastest flight to Southeast Asia depart from?

    For those looking to save time traveling to Southeast Asia, London offers the quickest one-way flight (11 hours 20 minutes).

  • Does Bangkok Suvarnabhumi have car hire?

    Yes. Those touching down at Bangkok Suvarnabhumi can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Bangkok Suvarnabhumi?

    Yes. Bangkok Suvarnabhumi has hotels nearby for those requiring accommodations. Louis Tavern Dayrooms At Suvarnabhumi Airport is the closest property to Bangkok Suvarnabhumi (0.0 mi away from Bangkok Suvarnabhumi).

See more FAQs

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Users can book flights with no change fees policies with our dedicated filters. Book flights to Southeast Asia flexibly with Cheapflights today.

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Not ready to book yet? You can track prices for flights to Southeast Asia on Cheapflights with our Price Alerts feature and get notified when better prices are available.

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