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£302+ Cheap flights to Southeast Asia

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/8. Fares are subject to change and may not be available on all flights or dates of travel.
— BKK
31 Aug — 7 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
Explore the most affordable flight options available to Southeast Asia. Find the lowest fares based on data from user searches, with prices last updated on 1 August 2026.

Wed 30/1217:00
LGW
-
BKK
2 stops41h 15m
China Eastern
Thu 21/101:55
BKK
-
LGW
1 stop19h 05m
China Eastern
Deal found 29/7£467
Tue 10/1121:00
LHR
-
BKK
3 stops42h 35m
China Eastern
Sun 22/1101:55
BKK
-
LHR
1 stop22h 35m
China Eastern
Deal found 28/7£467
Sun 18/1008:20
STN
-
BKK
3 stops21h 25m
Multiple Airlines
Sun 1/1114:55
BKK
-
STN
1 stop23h 50m
Multiple Airlines
Deal found 29/7£467
Thu 27/810:55
LGW
-
BKK
2 stops25h 25m
Multiple Airlines
Mon 14/909:15
BKK
-
LGW
2 stops28h 40m
Multiple Airlines
Deal found 29/7£468
Mon 16/1120:25
LHR
-
BKK
1 stop20h 45m
Air China
Wed 25/1101:30
BKK
-
LHR
1 stop21h 25m
Air China
Deal found 29/7£468
Fri 11/915:15
LTN
-
BKK
2 stops26h 55m
Multiple Airlines
Fri 18/903:15
BKK
-
LTN
2 stops35h 05m
Multiple Airlines
Deal found 29/7£468
Mon 7/905:55
STN
-
BKK
2 stops25h 40m
Multiple Airlines
Sun 13/903:15
BKK
-
STN
2 stops34h 40m
Multiple Airlines
Deal found 28/7£468
Thu 29/1010:30
LGW
-
BKK
2 stops26h 40m
China Eastern
Sat 7/1119:05
BKK
-
LGW
1 stop25h 55m
China Eastern
Deal found 30/7£469
Fri 4/920:25
LHR
-
BKK
1 stop21h 45m
Air China
Wed 9/919:35
BKK
-
LHR
1 stop28h 05m
Air China
Deal found 30/7£469
Mon 14/915:15
LTN
-
BKK
2 stops26h 55m
Multiple Airlines
Tue 13/1009:10
BKK
-
LTN
2 stops19h 40m
Multiple Airlines
Deal found 29/7£469
Mon 7/905:55
STN
-
BKK
2 stops25h 40m
Multiple Airlines
Wed 7/1020:45
BKK
-
STN
2 stops33h 25m
Multiple Airlines
Deal found 29/7£469
Wed 30/915:35
LGW
-
BKK
1 stop15h 00m
Condor
Fri 9/1022:35
BKK
-
LGW
1 stop16h 25m
Condor
Deal found 31/7£469

Find flights to Southeast Asia

Browse one-way and return flights deals to Southeast Asia on Cheapflights. Flight deals are based on user searches and were last updated on 1 August 2026
Explore Southeast Asia
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Find flight deals to Southeast Asia

Find the latest flights to Southeast Asia in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 1 August 2026.

Return from

£467

One-way from

£302

Popular in

December

Cheapest in

September

Average price

£711
China Eastern
  • China Eastern
  • 30/12-21/1
  • 3 total stops
  • 60h 20m total
  • London to Bangkok
Search Deals
China Eastern
  • China Eastern
  • 17/8
  • 1 total stop
  • 18h 55m total
  • London to Southeast Asia
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£44 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for return flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Locate flights to Southeast Asia that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 1 August 2026.
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

LGW - BKK

LGWBKK

London Gatwick

Wed 9/9

15:35-12:35

1 stop15h 00m

Bangkok Suvarnabhumi

Thu 17/9

22:35-14:45

1 stop22h 10m

£470

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Thu 1/10

19:35-12:35

1 stop35h 00m

Bangkok Suvarnabhumi

Wed 14/10

22:35-08:55

1 stop16h 20m

£480

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Mon 24/8

18:00-18:05

1 stop18h 05m

Bangkok Suvarnabhumi

Sun 6/9

21:55-19:10

1 stop27h 15m

£488

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 26/9

21:20-12:30

1 stop33h 10m

Bangkok Suvarnabhumi

Sun 11/10

03:00-18:40

2 stops21h 40m

£496

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 26/8

22:05-11:10

1 stop31h 05m

Bangkok Suvarnabhumi

Tue 1/9

03:15-20:00

1 stop22h 45m

£520

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Tue 3/11

12:40-07:20

Nonstop11h 40m

Bangkok Suvarnabhumi

Thu 19/11

14:50-21:05

Nonstop13h 15m

£524

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Fri 1/1

06:20-01:00

Nonstop11h 40m

Bangkok Suvarnabhumi

Thu 21/1

14:50-21:05

Nonstop13h 15m

£525

LondonBangkok

LTN - BKK

LTNBKK

London Luton

Mon 24/8

13:35-17:25

2 stops21h 50m

Bangkok Suvarnabhumi

Mon 31/8

08:00-22:50

3 stops44h 50m

£548

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Tue 1/9

11:35-01:25

3 stops31h 50m

Bangkok Suvarnabhumi

Mon 21/9

02:10-15:00

1 stop18h 50m

£567

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 27/8

11:45-09:30

1 stop15h 45m

Bangkok Suvarnabhumi

Mon 14/9

11:25-07:40

2 stops26h 15m

£606

Flights are sorted by cheapest return flights first.

Deals found on 31/7

Showing 1-10 of 60 resultsSorted by cheapest first
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6

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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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 14 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 £316
Qatar Airways
Qatar Airways
From £437
Emirates
Emirates
From £343
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 AirAsia X, Norse Atlantic UK and Bangkok Airways.

Rainfall in Southeast Asia by month

Plan your trip to Southeast Asia by taking into account the average rainfall totals 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

Plan your trip to Southeast Asia by taking into account the average temperature totals 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 50 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?

Use this chart to determine the cheapest time to fly return from London to Southeast Asia. Price data was last updated on 25 July 2026.

Users looking for the lowest fares to Southeast Asia should consider flying on Saturday 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

Get insights into the airlines that provide service to Southeast Asia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Southeast Asia. Reviews last updated 1 August 2026.
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

Overall

8.2

Boarding

8.3

Crew

8.6

Entertainment

8.1

Food

7.8

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

Overall

8.2

Boarding

8.3

Crew

8.6

Entertainment

8.1

Food

7.8

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
1,435 reviews
Singapore Airlines
8.2
Very Good
1,584 reviews
Check prices

Comfort

8.0

Overall

8.2

Boarding

8.3

Crew

8.6

Entertainment

8.1

Food

7.8

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
3,738 reviews
Singapore Airlines
8.2
Very Good
1,584 reviews
Check prices

Comfort

8.0

Overall

8.2

Boarding

8.3

Crew

8.6

Entertainment

8.1

Food

7.8

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

Comfort

8.0

Overall

8.2

Boarding

8.3

Crew

8.6

Entertainment

8.1

Food

7.8

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
1,499 reviews
Singapore Airlines
8.2
Very Good
1,584 reviews
Check prices

Comfort

8.0

Overall

8.2

Boarding

8.3

Crew

8.6

Entertainment

8.1

Food

7.8

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, Juneyao Airlines 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 £44.

  • 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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Millions of users choose and trust Cheapflights to book the best flight deals to Southeast Asia for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights to Southeast Asia with no change fees?

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

Can Cheapflights notify me if prices for flights to Southeast Asia become cheaper?

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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