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£265+ 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 25/2. Fares are subject to change and may not be available on all flights or dates of travel.
— BKK
15 Feb — 22 Feb1
1 adult
1 adult, Economy, 0 bags

Flights to Southeast Asia in 2026

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 16 January 2026.

Return from

£403

One-way from

£265

Popular in

July

Cheapest in

May

Average price

£612
China Eastern
  • China Eastern
  • 4/5-16/5
  • 3 total stops
  • 48h 30m total
  • London to Bangkok
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19/2
  • 19/2
  • 2 total stops
  • 40h 10m total
  • London to Southeast Asia
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£87 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£19 potential savings vs. average return price).
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Average for return flights in January 2026
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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 16 January 2026
Explore Southeast Asia
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Flights to Davao City
Flights to Penang
Flights to Chiang Mai
Flights to Krabi
Flights to Da Nang
Flights to Kota Kinabalu
Flights to Boracay

Find flight deals to Southeast Asia

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 16 January 2026.

Mon 27/418:05
LGW
-
BKK
2 stops25h 10m
China Eastern
Sat 9/513:35
BKK
-
LGW
1 stop23h 05m
China Eastern
Deal found 15/1£403
Mon 26/121:00
LHR
-
BKK
2 stops38h 05m
Hainan Airlines
Tue 3/219:10
BKK
-
LHR
1 stop28h 10m
Hainan Airlines
Deal found 13/1£403
Tue 17/221:00
LHR
-
BKK
3 stops34h 05m
China Eastern
Tue 10/313:35
BKK
-
LHR
1 stop34h 55m
China Eastern
Deal found 15/1£404
Sat 7/320:20
LGW
-
BKK
1 stop22h 30m
China Southern
Mon 23/303:00
BKK
-
LGW
1 stop21h 20m
China Southern
Deal found 15/1£405
Wed 11/321:00
LHR
-
BKK
1 stop20h 55m
China Eastern
Sat 28/319:55
BKK
-
LHR
1 stop28h 45m
China Eastern
Deal found 14/1£405
Sat 28/220:20
LGW
-
BKK
1 stop22h 30m
China Southern
Fri 6/303:00
BKK
-
LGW
1 stop21h 20m
China Southern
Deal found 14/1£406
Wed 28/121:00
LHR
-
BKK
1 stop24h 05m
China Eastern
Wed 4/205:45
BKK
-
LHR
1 stop18h 45m
China Eastern
Deal found 14/1£406
Wed 11/321:00
LHR
-
BKK
1 stop20h 55m
China Eastern
Sat 4/421:55
BKK
-
LHR
1 stop26h 45m
China Eastern
Deal found 13/1£406
Sun 1/208:55
STN
-
BKK
2 stops31h 35m
Multiple Airlines
Fri 6/215:20
BKK
-
STN
2 stops31h 35m
Multiple Airlines
Deal found 15/1£406
Sat 14/320:20
LGW
-
BKK
1 stop22h 30m
China Southern
Fri 20/303:00
BKK
-
LGW
1 stop21h 20m
China Southern
Deal found 15/1£407
Tue 20/121:00
LHR
-
BKK
1 stop18h 25m
China Eastern
Mon 2/219:05
BKK
-
LHR
1 stop29h 25m
China Eastern
Deal found 15/1£407
Mon 27/418:05
LGW
-
BKK
2 stops36h 15m
China Eastern
Wed 6/520:50
BKK
-
LGW
2 stops39h 50m
China Eastern
Deal found 15/1£408

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 16 January 2026.
Use the filters below to find and compare flights to Southeast Asia that are best for you.

Fly from

London

Route

Depart

Return

Price

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Mon 4/5

11:35-22:15

3 stops28h 40m

Bangkok Suvarnabhumi

Sat 16/5

02:10-16:00

1 stop19h 50m

£403

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 26/1

21:00-22:25

1 stop18h 25m

Bangkok Suvarnabhumi

Tue 3/2

05:05-17:30

1 stop19h 25m

£416

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Thu 30/4

22:15-16:05

Nonstop11h 50m

Bangkok Suvarnabhumi

Sun 17/5

22:35-05:55

Nonstop13h 20m

£461

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Sat 16/5

22:15-16:05

Nonstop11h 50m

Bangkok Suvarnabhumi

Wed 27/5

22:35-05:55

Nonstop13h 20m

£461

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Tue 26/5

22:15-16:05

Nonstop11h 50m

Bangkok Suvarnabhumi

Sun 31/5

22:35-05:55

Nonstop13h 20m

£462

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Tue 14/4

22:15-16:05

Nonstop11h 50m

Bangkok Suvarnabhumi

Wed 6/5

22:35-05:55

Nonstop13h 20m

£462

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 3/6

14:45-11:50

1 stop15h 05m

Bangkok Suvarnabhumi

Sun 28/6

15:05-07:00

1 stop21h 55m

£470

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 1/5

09:30-11:50

1 stop20h 20m

Bangkok Suvarnabhumi

Mon 8/6

03:15-15:05

1 stop17h 50m

£470

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Wed 11/3

17:00-18:25

1 stop18h 25m

Bangkok Suvarnabhumi

Tue 24/3

19:05-14:00

1 stop25h 55m

£471

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 29/4

20:50-23:50

1 stop21h 00m

Bangkok Suvarnabhumi

Thu 14/5

09:45-07:00

1 stop27h 15m

£471

Flights are sorted by cheapest return flights first.

Deals found on 14/1

Showing 1-10 of 60 results
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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
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 19 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 (10 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (8 on average).

What are the most popular airlines that fly to Southeast Asia?

The most popular airlines flying from London to Southeast Asia are Thai Airways, Qatar Airways and Singapore Airlines.

Qatar Airways
Qatar Airways
From £436
Etihad Airways
Etihad Airways
From £330
Emirates
Emirates
From £293
Thai Airways
Thai Airways
From £377

What are the cheapest airlines that fly to Southeast Asia?

The cheapest airlines flying from London to Southeast Asia are Bangkok Airways, Oman Air and Malaysia 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).

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 16 January 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
8.1
Very Good
1,431 reviews
Check prices

Crew

8.6

Comfort

8.0

Overall

8.1

Entertainment

8.0

Boarding

8.3

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
8.1
Very Good
1,431 reviews
Singapore Airlines
8.1
Very Good
1,431 reviews
Check prices

Crew

8.6

Comfort

8.0

Overall

8.1

Entertainment

8.0

Boarding

8.3

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
1,130 reviews
Singapore Airlines
8.1
Very Good
1,431 reviews
Check prices

Crew

8.6

Comfort

8.0

Overall

8.1

Entertainment

8.0

Boarding

8.3

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
7.4
Good
3,715 reviews
Singapore Airlines
8.1
Very Good
1,431 reviews
Check prices

Crew

8.6

Comfort

8.0

Overall

8.1

Entertainment

8.0

Boarding

8.3

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
1,370 reviews
Singapore Airlines
8.1
Very Good
1,431 reviews
Check prices

Crew

8.6

Comfort

8.0

Overall

8.1

Entertainment

8.0

Boarding

8.3

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
7.2
Good
137 reviews
Singapore Airlines
8.1
Very Good
1,431 reviews
Check prices

Crew

8.6

Comfort

8.0

Overall

8.1

Entertainment

8.0

Boarding

8.3

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, Norse Atlantic UK 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 £53, 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

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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