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£279+ 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 13/5. Fares are subject to change and may not be available on all flights or dates of travel.
— BKK
22 Apr — 29 Apr1
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 March 2026.

Mon 27/416:15
LHR
-
BKK
1 stop15h 30m
SAUDIA
Wed 13/515:20
BKK
-
LHR
1 stop35h 10m
SAUDIA
Deal found 22/3£425
Thu 11/610:20
LGW
-
BKK
1 stop20h 15m
Condor
Mon 22/622:35
BKK
-
LGW
1 stop16h 25m
Condor
Deal found 20/3£426
Wed 13/522:05
LHR
-
BKK
1 stop22h 10m
Shenzhen Airlines
Tue 19/503:15
BKK
-
LHR
1 stop22h 45m
Shenzhen Airlines
Deal found 20/3£426
Mon 26/1017:00
LGW
-
BKK
1 stop24h 55m
China Eastern
Mon 16/1113:35
BKK
-
LGW
1 stop23h 55m
China Eastern
Deal found 19/3£427
Fri 1/522:00
LHR
-
BKK
2 stops38h 15m
Hainan Airlines
Sun 10/511:05
BKK
-
LHR
2 stops38h 25m
Hainan Airlines
Deal found 21/3£427
Wed 10/615:35
LGW
-
BKK
1 stop15h 00m
Condor
Thu 25/622:35
BKK
-
LGW
1 stop16h 55m
Condor
Deal found 20/3£427
Fri 1/516:15
LHR
-
BKK
1 stop15h 30m
SAUDIA
Sun 17/515:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 22/3£427
Thu 10/915:40
LGW
-
BKK
1 stop14h 55m
Condor
Thu 24/922:35
BKK
-
LGW
1 stop16h 55m
Condor
Deal found 19/3£428
Wed 6/521:20
LHR
-
BKK
1 stop17h 35m
China Eastern
Tue 19/502:10
BKK
-
LHR
1 stop22h 30m
China Eastern
Deal found 20/3£428
Thu 18/615:40
LGW
-
BKK
1 stop14h 55m
Condor
Thu 2/722:35
BKK
-
LGW
1 stop16h 55m
Condor
Deal found 18/3£429
Mon 27/421:20
LHR
-
BKK
1 stop33h 10m
China Eastern
Wed 13/505:05
BKK
-
LHR
1 stop19h 35m
China Eastern
Deal found 18/3£429
Mon 7/915:35
LGW
-
BKK
1 stop15h 00m
Condor
Tue 22/922:35
BKK
-
LGW
1 stop16h 25m
Condor
Deal found 20/3£430

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 March 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 23 March 2026.

Return from

£425

One-way from

£279

Popular in

July

Cheapest in

May

Average price

£632
SAUDIA
  • SAUDIA
  • 27/4-13/5
  • 2 total stops
  • 50h 40m total
  • London to Bangkok
Search Deals
Turkmenistan Airlines
  • Turkmenistan Airlines
  • 13/5
  • 1 total stop
  • 17h 20m total
  • London to Southeast Asia
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£79 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for return flights in March 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 March 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

LHR - BKK

LHRBKK

London Heathrow

Sat 13/6

22:05-11:10

1 stop31h 05m

Bangkok Suvarnabhumi

Thu 18/6

03:15-20:00

1 stop22h 45m

£439

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 22/4

22:05-02:15

1 stop22h 10m

Bangkok Suvarnabhumi

Sun 17/5

03:15-19:50

1 stop22h 35m

£450

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Wed 15/4

18:00-01:35

2 stops25h 35m

Bangkok Suvarnabhumi

Wed 6/5

07:50-06:40

3 stops28h 50m

£477

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Wed 13/5

11:35-18:05

1 stop24h 30m

Bangkok Suvarnabhumi

Sun 17/5

16:50-15:00

1 stop28h 10m

£515

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Fri 12/6

18:00-18:05

1 stop18h 05m

Bangkok Suvarnabhumi

Mon 22/6

21:55-15:00

1 stop23h 05m

£540

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Wed 10/6

18:00-01:35

2 stops49h 35m

Bangkok Suvarnabhumi

Sun 21/6

15:55-15:00

3 stops53h 05m

£549

LondonKuala Lumpur

LHR - KUL

LHRKUL

London Heathrow

Wed 8/4

21:10-08:25

1 stop28h 15m

Kuala Lumpur Intl

Thu 23/4

09:50-18:45

1 stop15h 55m

£560

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Fri 29/5

09:45-21:50

1 stop29h 05m

Manila Ninoy Aquino Intl

Tue 16/6

22:55-19:00

1 stop27h 05m

£569

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Mon 14/9

08:10-07:15

1 stop17h 05m

Bangkok Suvarnabhumi

Thu 1/10

20:00-06:40

1 stop16h 40m

£572

LondonKuala Lumpur

LGW - KUL

LGWKUL

London Gatwick

Sun 23/8

10:25-09:55

Nonstop16h 30m

Kuala Lumpur Intl

Tue 1/9

22:00-07:25

Nonstop16h 25m

£579

Flights are sorted by cheapest return flights first.

Deals found on 22/3

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
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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 18 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 Qatar Airways, Etihad Airways and Singapore Airlines.

Etihad Airways
Etihad Airways
From £330
Qatar Airways
Qatar Airways
From £439
Emirates
Emirates
From £286
Singapore Airlines
Singapore Airlines
From £361

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 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 23 March 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
1,484 reviews
Check prices

Boarding

8.3

Overall

8.2

Entertainment

8.0

Comfort

8.0

Crew

8.6

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
1,484 reviews
Singapore Airlines
8.2
Very Good
1,484 reviews
Check prices

Boarding

8.3

Overall

8.2

Entertainment

8.0

Comfort

8.0

Crew

8.6

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
1,224 reviews
Singapore Airlines
8.2
Very Good
1,484 reviews
Check prices

Boarding

8.3

Overall

8.2

Entertainment

8.0

Comfort

8.0

Crew

8.6

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
3,732 reviews
Singapore Airlines
8.2
Very Good
1,484 reviews
Check prices

Boarding

8.3

Overall

8.2

Entertainment

8.0

Comfort

8.0

Crew

8.6

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
1,429 reviews
Singapore Airlines
8.2
Very Good
1,484 reviews
Check prices

Boarding

8.3

Overall

8.2

Entertainment

8.0

Comfort

8.0

Crew

8.6

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
142 reviews
Singapore Airlines
8.2
Very Good
1,484 reviews
Check prices

Boarding

8.3

Overall

8.2

Entertainment

8.0

Comfort

8.0

Crew

8.6

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, 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 £1,131, however they can be found for as little as £18.

  • 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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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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