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£236+ Cheap flights to Southeast Asia

— BKK
10 Oct — 17 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 stop21h 15m
Mon 28/917:45 -
1 stop32h 35m
Deal found 10/9£403
Sat 19/920:25 -
1 stop20h 55m
Fri 25/902:55 -
1 stop24h 20m
Deal found 9/9£404
Sun 27/922:10 -
1 stop35h 35m
Wed 21/1017:45 -
1 stop32h 35m
Deal found 10/9£406
Sat 3/1022:00 -
1 stop37h 05m
Thu 3/1219:30 -
1 stop27h 25m
Deal found 10/9£407
Sun 13/922:10 -
1 stop21h 15m
Mon 12/1008:20 -
1 stop18h 00m
Deal found 8/9£409
Mon 2/1120:25 -
1 stop34h 15m
Mon 23/1115:15 -
1 stop31h 40m
Deal found 10/9£409
Mon 14/922:10 -
1 stop29h 25m
Tue 13/1011:55 -
1 stop38h 25m
Deal found 8/9£409
Wed 25/1122:00 -
1 stop28h 50m
Sun 6/1217:55 -
1 stop32h 40m
Deal found 9/9£410
Tue 15/922:00 -
1 stop20h 30m
Mon 12/1002:55 -
1 stop24h 20m
Deal found 7/9£411
Sat 3/1022:00 -
1 stop37h 05m
Fri 16/1014:50 -
1 stop35h 35m
Deal found 10/9£411
Wed 16/922:40 -
1 stop18h 40m
Wed 30/906:25 -
1 stop18h 15m
Deal found 9/9£412
Sat 12/920:20 -
1 stop21h 50m
Fri 9/1019:35 -
1 stop17h 00m
Deal found 10/9£412

Find flights to Southeast Asia

Explore Southeast Asia
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Find flight deals to Southeast Asia

Return from

£412

One-way from

£236

Popular in

December

Cheapest in

September

Average price

£532
Air China
  • Air China
  • 28/10-1/12
  • 2 total stops
  • 54h 45m total
  • London to Bangkok
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Air China
  • Air China
  • 20/9-31/12
  • 1 total stop
  • 21h 20m 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

Tue 20/10

06:20-07:50

2 stops43h 30m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£254

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Thu 3/12

08:00-17:15

2 stops26h 15m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£259

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Sun 28/2

07:45-04:00

2 stops37h 15m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£266

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Fri 6/11

13:20-05:30

2 stops33h 10m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£267

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Mon 2/11

20:25-10:25

3 stops31h 00m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£276

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Wed 21/10

21:50-07:50

3 stops28h 00m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£294

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Mon 5/10

20:50-06:55

1 stop28h 05m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£310

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

Wed 4/11

08:25-06:45

1 stop15h 20m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£310

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Thu 29/10

20:05-17:15

1 stop14h 10m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£315

Flights are sorted by cheapest return flights first.

Deals found on 8/9

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 45 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 Monday (9 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 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
1,599 reviews
Check prices

Overall

8.2

Crew

8.6

Entertainment

8.1

Food

7.8

Comfort

8.0

Boarding

8.3

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
1,599 reviews
Singapore Airlines
8.2
Very Good
1,599 reviews
Check prices

Overall

8.2

Crew

8.6

Entertainment

8.1

Food

7.8

Comfort

8.0

Boarding

8.3

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
1,480 reviews
Singapore Airlines
8.2
Very Good
1,599 reviews
Check prices

Overall

8.2

Crew

8.6

Entertainment

8.1

Food

7.8

Comfort

8.0

Boarding

8.3

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
1,599 reviews
Check prices

Overall

8.2

Crew

8.6

Entertainment

8.1

Food

7.8

Comfort

8.0

Boarding

8.3

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
3,734 reviews
Singapore Airlines
8.2
Very Good
1,599 reviews
Check prices

Overall

8.2

Crew

8.6

Entertainment

8.1

Food

7.8

Comfort

8.0

Boarding

8.3

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
1,535 reviews
Singapore Airlines
8.2
Very Good
1,599 reviews
Check prices

Overall

8.2

Crew

8.6

Entertainment

8.1

Food

7.8

Comfort

8.0

Boarding

8.3

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 £67, however they can be found for as little as £19.

  • 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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