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£274+ 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 20/1. Fares are subject to change and may not be available on all flights or dates of travel.
— BKK
5 Feb — 12 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 6 January 2026.

Return from

£406

One-way from

£273

Popular in

July

Cheapest in

May

Average price

£609
China Southern
  • China Southern
  • 24/1-6/2
  • 2 total stops
  • 44h 00m total
  • London to Bangkok
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17/1
  • 17/1
  • 3 total stops
  • 41h 35m total
  • London to Southeast Asia
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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 (£20 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 6 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 6 January 2026.

Sat 24/120:20LGW - BKK
1 stop22h 30mChina Southern
Fri 6/202:50BKK - LGW
1 stop21h 30mChina Southern
Deal found 5/1£406
Wed 25/220:30LHR - BKK
1 stop16h 05mAir India
Wed 11/320:50BKK - LHR
1 stop21h 15mAir India
Deal found 5/1£406
Wed 14/117:00LGW - BKK
1 stop24h 55mChina Eastern
Fri 30/119:55BKK - LGW
1 stop25h 05mChina Eastern
Deal found 5/1£407
Sun 1/221:00LHR - BKK
3 stops40h 10mChina Eastern
Sun 8/221:05BKK - LHR
2 stops27h 25mChina Eastern
Deal found 5/1£407
Thu 15/117:00LGW - BKK
1 stop17h 50mChina Eastern
Fri 30/110:45BKK - LGW
1 stop34h 15mChina Eastern
Deal found 5/1£407
Tue 20/121:00LHR - BKK
2 stops34h 55mChina Eastern
Tue 3/221:05BKK - LHR
2 stops27h 25mChina Eastern
Deal found 6/1£407
Fri 20/207:45STN - BKK
2 stops30h 20mMultiple Airlines
Wed 25/322:05BKK - STN
2 stops31h 30mMultiple Airlines
Deal found 6/1£407
Sat 28/220:20LGW - BKK
1 stop22h 30mChina Southern
Fri 20/303:00BKK - LGW
1 stop21h 20mChina Southern
Deal found 5/1£408
Wed 14/121:00LHR - BKK
1 stop21h 55mChina Eastern
Wed 28/109:25BKK - LHR
1 stop39h 05mChina Eastern
Deal found 6/1£408
Sun 18/107:40STN - BKK
2 stops32h 50mMultiple Airlines
Wed 28/115:20BKK - STN
2 stops35h 20mMultiple Airlines
Deal found 5/1£408
Sun 18/121:00LHR - BKK
1 stop21h 55mChina Eastern
Thu 5/205:45BKK - LHR
1 stop18h 45mChina Eastern
Deal found 6/1£409
Fri 20/207:45STN - BKK
2 stops30h 20mMultiple Airlines
Fri 6/322:05BKK - STN
2 stops32h 05mMultiple Airlines
Deal found 5/1£409

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 6 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

Wed 21/1

16:00-10:25

Nonstop11h 25m

Bangkok Suvarnabhumi

Thu 5/2

12:25-18:20

Nonstop12h 55m

£469

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sun 1/3

17:05-16:15

1 stop15h 10m

Singapore Changi

Sun 15/3

10:55-21:25

1 stop18h 30m

£483

LondonBangkok

LTN - BKK

LTNBKK

London Luton

Sun 22/2

21:30-14:30

3 stops34h 00m

Bangkok Suvarnabhumi

Sun 1/3

18:25-23:10

3 stops35h 45m

£485

LondonBangkok

LTN - BKK

LTNBKK

London Luton

Fri 6/3

06:15-09:50

2 stops20h 35m

Bangkok Suvarnabhumi

Sun 22/3

22:05-23:10

2 stops32h 05m

£496

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 5/2

09:30-12:30

1 stop19h 00m

Singapore Changi

Mon 16/2

20:00-06:35

1 stop18h 35m

£496

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Sun 1/3

21:50-12:30

1 stop30h 40m

Singapore Changi

Tue 10/3

20:00-14:45

1 stop26h 45m

£496

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 19/3

20:55-18:45

1 stop14h 50m

Bangkok Suvarnabhumi

Fri 15/5

15:05-07:00

1 stop21h 55m

£498

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 28/2

13:55-23:25

1 stop26h 30m

Bangkok Suvarnabhumi

Thu 12/3

02:55-18:10

1 stop22h 15m

£498

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 20/1

19:20-23:25

1 stop21h 05m

Bangkok Suvarnabhumi

Sat 31/1

09:15-06:40

1 stop28h 25m

£499

LondonBangkok

LTN - BKK

LTNBKK

London Luton

Mon 2/2

06:00-21:05

3 stops32h 05m

Bangkok Suvarnabhumi

Mon 23/2

20:40-23:10

3 stops33h 30m

£500

Flights are sorted by cheapest return flights first.

Deals found on 5/1

Showing 1-10 of 60 results
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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 12 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 (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, Singapore Airlines and Qatar Airways.

Qatar Airways
Qatar Airways
From £434
Emirates
Emirates
From £318
Etihad Airways
Etihad Airways
From £435
Thai Airways
Thai Airways
From £490

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 China Eastern.

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 6 January 2026.
Read through reviews of airlines serving Southeast Asia, such as Singapore Airlines, Cathay Pacific, andChina Southern. 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
1,427 reviews
Check prices

Overall

8.1

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.6

Entertainment

8.0

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
1,427 reviews
Singapore Airlines
8.1
Very Good
1,427 reviews
Check prices

Overall

8.1

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.6

Entertainment

8.0

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
1,121 reviews
Singapore Airlines
8.1
Very Good
1,427 reviews
Check prices

Overall

8.1

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
China Southern
7.5
Good
125 reviews
Singapore Airlines
8.1
Very Good
1,427 reviews
Check prices

Overall

8.1

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.6

Entertainment

8.0

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
3,698 reviews
Singapore Airlines
8.1
Very Good
1,427 reviews
Check prices

Overall

8.1

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.6

Entertainment

8.0

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
136 reviews
Singapore Airlines
8.1
Very Good
1,427 reviews
Check prices

Overall

8.1

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.6

Entertainment

8.0

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, Turkmenistan 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 £52, 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 (5 hours 35 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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Fly with Cheapflights

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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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