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£233+ Cheap flights to Southeast Asia

— BKK
17 Oct — 24 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 30/1110:40 -
1 stop31h 50m
Sun 28/219:30 -
1 stop17h 50m
Deal found 13/9£373
Sun 25/1022:00 -
1 stop30h 25m
Wed 18/1102:10 -
1 stop23h 25m
Deal found 14/9£376
Thu 19/1110:40 -
1 stop31h 50m
Sun 13/1202:30 -
1 stop35h 40m
Deal found 13/9£383
Fri 20/1119:10 -
1 stop34h 20m
Sun 20/1219:30 -
1 stop17h 50m
Deal found 14/9£384
Thu 19/1122:00 -
1 stop20h 05m
Mon 14/1219:55 -
1 stop29h 40m
Deal found 13/9£387
Thu 5/1121:30 -
1 stop32h 00m
Wed 2/1201:30 -
1 stop23h 20m
Deal found 14/9£396
Fri 18/912:35 -
1 stop22h 05m
Tue 20/1012:15 -
1 stop24h 20m
Deal found 14/9£397
Sun 25/1011:35 -
1 stop23h 30m
Thu 19/1119:30 -
1 stop17h 50m
Deal found 14/9£398
Fri 25/912:35 -
1 stop15h 50m
Sat 10/1012:40 -
1 stop24h 55m
Deal found 16/9£401
Sun 20/922:05 -
1 stop20h 35m
Mon 5/1002:55 -
1 stop23h 55m
Deal found 15/9£402
Thu 26/1122:00 -
1 stop34h 50m
Thu 10/1212:00 -
1 stop38h 35m
Deal found 16/9£402
Tue 22/922:00 -
1 stop20h 40m
Mon 5/1002:55 -
1 stop23h 55m
Deal found 15/9£403

Find flights to Southeast Asia

Explore Southeast Asia
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Find flight deals to Southeast Asia

Return from

£373

One-way from

£233

Popular in

December

Cheapest in

September

Average price

£535
Air China
  • Air China
  • 30/11-28/2
  • 2 total stops
  • 49h 40m total
  • London to Bangkok
Search Deals
27/9-31/12
  • 27/9-31/12
  • 2 total stops
  • 54h 40m total
  • London to Southeast Asia
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£50 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£22 potential savings vs. average return price).
Search Deals
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 30/11

19:10-14:20

2 stops36h 10m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£267

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Fri 25/9

05:40-12:30

2 stops24h 50m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£269

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Wed 30/9

13:35-17:25

2 stops21h 50m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£269

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Tue 3/11

20:00-07:20

3 stops28h 20m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£271

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Tue 20/10

06:20-17:25

2 stops29h 05m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£277

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Wed 30/9

22:05-18:15

1 stop38h 10m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£289

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Sat 17/10

20:35-06:50

2 stops52h 15m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£289

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Thu 8/10

21:50-10:20

3 stops54h 30m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£295

LondonManila

LHR London Heathrow - MNL Manila Ninoy Aquino Intl

LHRMNL

London Heathrow

Thu 26/11

22:30-01:40

1 stop19h 10m

Manila Ninoy Aquino Intl

Wed 31/12

00:00-17:00

Nonstop0h 00m

£297

LondonKuala Lumpur

LHR London Heathrow - KUL Kuala Lumpur Intl

LHRKUL

London Heathrow

Mon 2/11

17:45-16:00

1 stop38h 15m

Kuala Lumpur Intl

Wed 31/12

00:00-17:30

Nonstop0h 00m

£338

Flights are sorted by cheapest return flights first.

Deals found on 14/9

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 41 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 £277
Qatar Airways
Qatar Airways
From £439
Emirates
Emirates
From £368
Singapore Airlines
Singapore Airlines
From £187

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 Sunday 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
1,602 reviews
Check prices

Overall

8.2

Food

7.8

Crew

8.6

Boarding

8.3

Entertainment

8.1

Comfort

8.0

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
1,602 reviews
Singapore Airlines
8.2
Very Good
1,602 reviews
Check prices

Overall

8.2

Food

7.8

Crew

8.6

Boarding

8.3

Entertainment

8.1

Comfort

8.0

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
1,487 reviews
Singapore Airlines
8.2
Very Good
1,602 reviews
Check prices

Overall

8.2

Food

7.8

Crew

8.6

Boarding

8.3

Entertainment

8.1

Comfort

8.0

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
166 reviews
Singapore Airlines
8.2
Very Good
1,602 reviews
Check prices

Overall

8.2

Food

7.8

Crew

8.6

Boarding

8.3

Entertainment

8.1

Comfort

8.0

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
3,732 reviews
Singapore Airlines
8.2
Very Good
1,602 reviews
Check prices

Overall

8.2

Food

7.8

Crew

8.6

Boarding

8.3

Entertainment

8.1

Comfort

8.0

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
1,536 reviews
Singapore Airlines
8.2
Very Good
1,602 reviews
Check prices

Overall

8.2

Food

7.8

Crew

8.6

Boarding

8.3

Entertainment

8.1

Comfort

8.0

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 £68, however they can be found for as little as £20.

  • 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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