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£242+ Cheap flights to Southeast Asia

— BKK
5 Oct — 12 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

Sun 13/922:10 -
1 stop35h 35m
Mon 28/908:20 -
1 stop18h 00m
Deal found 2/9£408
Sun 6/920:25 -
1 stop20h 55m
Fri 25/902:55 -
1 stop24h 20m
Deal found 2/9£409
Mon 23/1122:00 -
1 stop28h 50m
Wed 2/1217:55 -
1 stop32h 40m
Deal found 3/9£410
Sun 13/922:10 -
1 stop18h 05m
Mon 28/911:55 -
1 stop33h 35m
Deal found 5/9£410
Sun 6/922:40 -
1 stop18h 40m
Wed 30/906:25 -
1 stop18h 15m
Deal found 4/9£410
Fri 13/1110:40 -
1 stop31h 30m
Tue 1/1202:55 -
1 stop22h 15m
Deal found 3/9£410
Wed 9/920:25 -
1 stop20h 55m
Sun 27/906:25 -
1 stop21h 00m
Deal found 2/9£411
Tue 22/920:20 -
1 stop21h 00m
Wed 21/1006:25 -
1 stop31h 10m
Deal found 1/9£411
Sun 6/922:40 -
1 stop18h 40m
Mon 28/906:25 -
1 stop18h 15m
Deal found 3/9£412
Tue 15/911:15 -
1 stop17h 40m
Sat 26/906:25 -
1 stop31h 10m
Deal found 3/9£412
Sun 6/922:40 -
1 stop18h 40m
Sun 27/906:25 -
1 stop18h 15m
Deal found 2/9£413
Wed 28/1019:10 -
1 stop22h 15m
Fri 6/1103:10 -
1 stop35h 45m
Deal found 2/9£413

Find flights to Southeast Asia

Explore Southeast Asia
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Find flight deals to Southeast Asia

Return from

£418

One-way from

£242

Popular in

December

Cheapest in

September

Average price

£532
Air China
  • Air China
  • 1/12-21/1
  • 2 total stops
  • 60h 15m total
  • London to Bangkok
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Air China
  • Air China
  • 10/9-31/12
  • 1 total stop
  • 23h 45m 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 September 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

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Mon 14/9

18:10-18:20

3 stops42h 10m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£253

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Wed 14/10

20:35-07:50

3 stops29h 15m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£259

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Sat 10/10

06:30-07:50

2 stops43h 20m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£260

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Sun 15/11

20:00-12:30

3 stops33h 30m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£262

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Wed 2/12

15:05-17:15

2 stops19h 10m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£265

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Mon 5/10

08:55-10:20

3 stops43h 25m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£268

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Mon 30/11

06:00-00:55

3 stops35h 55m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£270

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Fri 27/11

20:05-06:45

1 stop27h 40m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£310

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Fri 18/9

08:25-06:50

1 stop16h 25m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£311

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Mon 5/10

08:25-07:10

1 stop16h 45m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£312

Flights are sorted by cheapest return flights first.

Deals found on 4/9

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 27 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, andAir China. 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
1,593 reviews
Check prices

Comfort

8.0

Food

7.8

Overall

8.2

Entertainment

8.1

Boarding

8.3

Crew

8.6

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
1,593 reviews
Singapore Airlines
8.2
Very Good
1,593 reviews
Check prices

Comfort

8.0

Food

7.8

Overall

8.2

Entertainment

8.1

Boarding

8.3

Crew

8.6

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
1,471 reviews
Singapore Airlines
8.2
Very Good
1,593 reviews
Check prices

Comfort

8.0

Food

7.8

Overall

8.2

Entertainment

8.1

Boarding

8.3

Crew

8.6

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
7.5
Good
164 reviews
Singapore Airlines
8.2
Very Good
1,593 reviews
Check prices

Comfort

8.0

Food

7.8

Overall

8.2

Entertainment

8.1

Boarding

8.3

Crew

8.6

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
3,731 reviews
Singapore Airlines
8.2
Very Good
1,593 reviews
Check prices

Comfort

8.0

Food

7.8

Overall

8.2

Entertainment

8.1

Boarding

8.3

Crew

8.6

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
1,532 reviews
Singapore Airlines
8.2
Very Good
1,593 reviews
Check prices

Comfort

8.0

Food

7.8

Overall

8.2

Entertainment

8.1

Boarding

8.3

Crew

8.6

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 £263, 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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