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£299+ 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 27/8. Fares are subject to change and may not be available on all flights or dates of travel.
— BKK
23 Jul — 30 Jul1
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 23 June 2026.

Sat 31/1010:30
LGW
-
BKK
1 stop18h 50m
China Eastern
Sun 8/1101:55
BKK
-
LGW
1 stop19h 05m
China Eastern
Deal found 20/6£470
Fri 18/921:20
LHR
-
BKK
1 stop17h 35m
China Eastern
Sat 3/1002:10
BKK
-
LHR
1 stop22h 30m
China Eastern
Deal found 21/6£470
Tue 27/1013:45
STN
-
BKK
2 stops34h 35m
Multiple Airlines
Tue 3/1105:55
BKK
-
STN
1 stop19h 00m
Multiple Airlines
Deal found 21/6£470
Sat 31/1010:30
LGW
-
BKK
1 stop18h 50m
China Eastern
Sun 15/1101:55
BKK
-
LGW
1 stop19h 05m
China Eastern
Deal found 22/6£471
Sun 1/1117:40
LHR
-
BKK
1 stop17h 25m
Air China
Fri 13/1101:30
BKK
-
LHR
1 stop23h 20m
Air China
Deal found 21/6£471
Wed 28/1010:30
LGW
-
BKK
1 stop18h 50m
China Eastern
Thu 12/1113:35
BKK
-
LGW
1 stop31h 25m
China Eastern
Deal found 21/6£471
Sun 1/1117:40
LHR
-
BKK
1 stop17h 25m
Air China
Sun 15/1119:30
BKK
-
LHR
1 stop29h 20m
Air China
Deal found 21/6£471
Fri 6/1110:30
LGW
-
BKK
2 stops26h 40m
China Eastern
Sun 22/1107:50
BKK
-
LGW
2 stops37h 10m
China Eastern
Deal found 19/6£472
Mon 14/922:05
LHR
-
BKK
1 stop31h 05m
Shenzhen Airlines
Sun 20/903:15
BKK
-
LHR
1 stop22h 35m
Shenzhen Airlines
Deal found 19/6£472
Wed 28/1014:05
STN
-
BKK
1 stop30h 35m
Multiple Airlines
Fri 6/1106:00
BKK
-
STN
1 stop18h 15m
Multiple Airlines
Deal found 19/6£472
Mon 22/619:40
LGW
-
BKK
1 stop34h 55m
Condor
Wed 15/722:35
BKK
-
LGW
1 stop16h 20m
Condor
Deal found 21/6£473
Fri 27/1121:10
LHR
-
BKK
1 stop31h 00m
Shenzhen Airlines
Fri 11/1203:15
BKK
-
LHR
1 stop22h 55m
Shenzhen Airlines
Deal found 18/6£473

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 23 June 2026
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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 23 June 2026.

Return from

£470

One-way from

£299

Popular in

December

Cheapest in

September

Average price

£559
China Eastern
  • China Eastern
  • 31/10-25/11
  • 2 total stops
  • 42h 45m total
  • London to Bangkok
Search Deals
27/8
  • 27/8
  • 2 total stops
  • 41h 20m total
  • London to Southeast Asia
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£42 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for return flights in June 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 23 June 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 25/11

17:00-12:20

1 stop36h 20m

Bangkok Suvarnabhumi

Sun 29/11

15:55-06:30

2 stops45h 35m

£487

LondonBangkok

LTN - BKK

LTNBKK

London Luton

Tue 20/10

08:00-19:15

2 stops29h 15m

Bangkok Suvarnabhumi

Fri 6/11

05:55-07:35

2 stops32h 40m

£531

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 29/10

21:00-22:35

2 stops42h 35m

Bangkok Suvarnabhumi

Thu 12/11

01:55-17:30

1 stop22h 35m

£554

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 28/10

21:00-20:10

2 stops40h 10m

Bangkok Suvarnabhumi

Wed 11/11

01:55-17:30

1 stop22h 35m

£555

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Thu 12/11

10:30-12:20

1 stop18h 50m

Bangkok Suvarnabhumi

Fri 20/11

13:35-06:30

1 stop23h 55m

£556

LondonBangkok

LTN - BKK

LTNBKK

London Luton

Sun 13/9

05:40-12:10

2 stops24h 30m

Bangkok Suvarnabhumi

Wed 16/9

15:55-18:05

2 stops32h 10m

£578
Fastest return journey

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Tue 27/10

21:20-16:05

Nonstop11h 45m

Bangkok Suvarnabhumi

Tue 1/12

23:05-05:25

Nonstop13h 20m

£599

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Mon 2/11

21:20-16:05

Nonstop11h 45m

Bangkok Suvarnabhumi

Tue 17/11

23:05-05:25

Nonstop13h 20m

£600

LondonBangkok

LGW - BKK

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

LGW - BKK

LGWBKK

London Gatwick

Sat 7/11

21:20-16:05

Nonstop11h 45m

Bangkok Suvarnabhumi

Fri 13/11

23:05-05:25

Nonstop13h 20m

£606

Flights are sorted by cheapest return flights first.

Deals found on 21/6

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 24 hours 21 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 £322
Qatar Airways
Qatar Airways
From £446
Emirates
Emirates
From £350
Singapore Airlines
Singapore Airlines
From £190

What are the cheapest airlines that fly to Southeast Asia?

The cheapest airlines flying from London to Southeast Asia are Bangkok Airways, AirAsia X and Hainan Airlines.

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 85 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 20 June 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 23 June 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
1,549 reviews
Check prices

Crew

8.6

Overall

8.2

Entertainment

8.1

Boarding

8.3

Comfort

8.0

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Singapore Airlines
8.2
Very Good
1,549 reviews
Singapore Airlines
8.2
Very Good
1,549 reviews
Check prices

Crew

8.6

Overall

8.2

Entertainment

8.1

Boarding

8.3

Comfort

8.0

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Cathay Pacific
7.6
Good
1,388 reviews
Singapore Airlines
8.2
Very Good
1,549 reviews
Check prices

Crew

8.6

Overall

8.2

Entertainment

8.1

Boarding

8.3

Comfort

8.0

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Qatar Airways
7.3
Good
3,730 reviews
Singapore Airlines
8.2
Very Good
1,549 reviews
Check prices

Crew

8.6

Overall

8.2

Entertainment

8.1

Boarding

8.3

Comfort

8.0

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Etihad Airways
7.3
Good
1,461 reviews
Singapore Airlines
8.2
Very Good
1,549 reviews
Check prices

Crew

8.6

Overall

8.2

Entertainment

8.1

Boarding

8.3

Comfort

8.0

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Air China
7.3
Good
155 reviews
Singapore Airlines
8.2
Very Good
1,549 reviews
Check prices

Crew

8.6

Overall

8.2

Entertainment

8.1

Boarding

8.3

Comfort

8.0

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.

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 £76, however they can be found for as little as £25.

  • 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

Browse thousands of different options on Cheapflights for your next trip

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How does Cheapflights help users find flights to Southeast Asia?

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Why should you use Cheapflights to find cheap flight tickets to Southeast Asia?

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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