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£249+ Cheap flights to Southeast Asia

— BKK
17 Sep — 24 Sep1
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

Thu 29/1009:50 -
1 stop25h 05m
Thu 12/1118:55 -
1 stop18h 35m
Deal found 18/8£443
Mon 2/1121:00 -
2 stops45h 20m
Mon 16/1101:55 -
1 stop22h 35m
Deal found 18/8£443
Sat 14/1109:50 -
1 stop20h 05m
Tue 24/1120:10 -
1 stop17h 20m
Deal found 18/8£443
Mon 31/822:05 -
1 stop38h 10m
Mon 28/903:15 -
1 stop22h 35m
Deal found 18/8£443
Sat 19/922:00 -
2 stops21h 25m
Fri 2/1003:00 -
2 stops22h 10m
Deal found 17/8£444
Wed 16/921:20 -
1 stop21h 20m
Sat 3/1009:50 -
1 stop38h 50m
Deal found 18/8£444
Sun 23/822:00 -
1 stop35h 50m
Thu 15/1009:50 -
1 stop35h 10m
Deal found 18/8£445
Sat 7/1121:35 -
1 stop36h 05m
Sat 28/1115:15 -
1 stop31h 40m
Deal found 18/8£445
Sat 26/920:20 -
1 stop21h 50m
Tue 29/901:30 -
1 stop22h 35m
Deal found 17/8£446
Sun 20/912:40 -
2 stops29h 30m
Mon 5/1011:20 -
2 stops33h 15m
Deal found 18/8£446
Mon 28/922:05 -
1 stop22h 10m
Fri 9/1019:15 -
1 stop30h 35m
Deal found 17/8£446
Sat 26/918:10 -
1 stop16h 40m
Sun 11/1013:45 -
1 stop22h 45m
Deal found 18/8£446

Find flights to Southeast Asia

Explore Southeast Asia
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Find flight deals to Southeast Asia

Return from

£441

One-way from

£247

Popular in

December

Cheapest in

September

Average price

£692
Air China
  • Air China
  • 11/11-12/1
  • 2 total stops
  • 59h 50m total
  • London to Bangkok
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China Eastern
  • China Eastern
  • 29/8
  • 1 total stop
  • 22h 15m total
  • London to Southeast Asia
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£47 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£21 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
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

£493

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Sun 1/11

08:25-06:45

1 stop15h 20m

Bangkok Suvarnabhumi

Tue 1/12

09:00-05:55

1 stop27h 55m

£519

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Sat 12/9

08:25-06:55

1 stop16h 30m

Bangkok Suvarnabhumi

Sat 26/9

09:00-19:10

1 stop16h 10m

£520

LondonManila

LHR London Heathrow - MNL Manila Ninoy Aquino Intl

LHRMNL

London Heathrow

Mon 7/9

13:15-21:50

1 stop25h 35m

Manila Ninoy Aquino Intl

Sun 20/9

22:55-19:00

1 stop27h 05m

£544

LondonBangkok

LTN London Luton - BKK Bangkok Suvarnabhumi

LTNBKK

London Luton

Fri 27/11

15:05-17:15

2 stops19h 10m

Bangkok Suvarnabhumi

Fri 11/12

16:20-14:05

2 stops28h 45m

£545

LondonBangkok

LGW London Gatwick - DMK Bangkok Don Mueang Intl

LGWDMK

London Gatwick

Mon 7/12

17:35-00:35

1 stop24h 00m

Bangkok Don Mueang Intl

Fri 25/12

15:00-13:05

1 stop29h 05m

£548

LondonKuala Lumpur

LHR London Heathrow - KUL Kuala Lumpur Intl

LHRKUL

London Heathrow

Fri 12/2

21:10-02:05

1 stop20h 55m

Kuala Lumpur Intl

Sat 27/2

03:05-19:10

1 stop24h 05m

£581

LondonBangkok

STN London Stansted - BKK Bangkok Suvarnabhumi

STNBKK

London Stansted

Wed 2/9

06:55-05:05

1 stop16h 10m

Bangkok Suvarnabhumi

Wed 7/10

06:40-16:50

1 stop16h 10m

£591

LondonBangkok

LGW London Gatwick - BKK Bangkok Suvarnabhumi

LGWBKK

London Gatwick

Tue 8/9

22:15-16:05

Nonstop11h 50m

Bangkok Suvarnabhumi

Tue 27/10

23:05-05:25

Nonstop13h 20m

£600

LondonBangkok

STN London Stansted - BKK Bangkok Suvarnabhumi

STNBKK

London Stansted

Tue 22/9

17:35-05:10

1 stop29h 35m

Bangkok Suvarnabhumi

Sat 17/10

21:45-09:55

1 stop18h 10m

£603

Flights are sorted by cheapest return flights first.

Deals found on 17/8

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 36 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 £435
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 82 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
1,584 reviews
Check prices

Comfort

8.0

Entertainment

8.1

Boarding

8.3

Overall

8.2

Food

7.8

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
1,584 reviews
Singapore Airlines
8.2
Very Good
1,584 reviews
Check prices

Comfort

8.0

Entertainment

8.1

Boarding

8.3

Overall

8.2

Food

7.8

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
1,453 reviews
Singapore Airlines
8.2
Very Good
1,584 reviews
Check prices

Comfort

8.0

Entertainment

8.1

Boarding

8.3

Overall

8.2

Food

7.8

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
3,740 reviews
Singapore Airlines
8.2
Very Good
1,584 reviews
Check prices

Comfort

8.0

Entertainment

8.1

Boarding

8.3

Overall

8.2

Food

7.8

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
7.4
Good
160 reviews
Singapore Airlines
8.2
Very Good
1,584 reviews
Check prices

Comfort

8.0

Entertainment

8.1

Boarding

8.3

Overall

8.2

Food

7.8

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
1,504 reviews
Singapore Airlines
8.2
Very Good
1,584 reviews
Check prices

Comfort

8.0

Entertainment

8.1

Boarding

8.3

Overall

8.2

Food

7.8

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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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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