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£275+ 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 15/3. Fares are subject to change and may not be available on all flights or dates of travel.
— BKK
4 Apr — 11 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 5 March 2026.

Fri 6/321:00
LHR
-
BKK
1 stop30h 05m
Hainan Airlines
Thu 19/319:10
BKK
-
LHR
1 stop29h 25m
Hainan Airlines
Deal found 1/3£424
Sat 16/515:40
LGW
-
BKK
1 stop14h 55m
Condor
Fri 29/522:35
BKK
-
LGW
1 stop16h 25m
Condor
Deal found 1/3£425
Sun 8/321:00
LHR
-
BKK
2 stops40h 10m
China Eastern
Wed 18/305:05
BKK
-
LHR
1 stop19h 25m
China Eastern
Deal found 1/3£425
Tue 1/915:35
LGW
-
BKK
1 stop15h 00m
Condor
Fri 25/922:35
BKK
-
LGW
1 stop16h 25m
Condor
Deal found 2/3£426
Fri 13/321:10
LHR
-
BKK
1 stop31h 00m
Shenzhen Airlines
Fri 27/319:30
BKK
-
LHR
1 stop30h 40m
Shenzhen Airlines
Deal found 2/3£426
Sun 10/515:35
LGW
-
BKK
1 stop15h 00m
Condor
Tue 19/522:35
BKK
-
LGW
1 stop16h 25m
Condor
Deal found 1/3£426
Fri 13/321:10
LHR
-
BKK
1 stop31h 00m
Shenzhen Airlines
Fri 3/403:15
BKK
-
LHR
1 stop22h 35m
Shenzhen Airlines
Deal found 1/3£426
Mon 1/615:35
LGW
-
BKK
1 stop15h 00m
Condor
Fri 12/622:35
BKK
-
LGW
1 stop16h 25m
Condor
Deal found 2/3£427
Mon 16/321:10
LHR
-
BKK
1 stop22h 05m
Shenzhen Airlines
Sun 17/503:15
BKK
-
LHR
1 stop22h 35m
Shenzhen Airlines
Deal found 4/3£427
Fri 1/515:45
LGW
-
BKK
1 stop14h 50m
Condor
Mon 25/522:35
BKK
-
LGW
1 stop16h 25m
Condor
Deal found 1/3£428
Fri 1/522:05
LHR
-
BKK
1 stop31h 05m
Shenzhen Airlines
Sun 10/503:15
BKK
-
LHR
1 stop22h 35m
Shenzhen Airlines
Deal found 4/3£428
Tue 26/506:55
STN
-
BKK
1 stop16h 15m
Turkish Airlines
Thu 11/606:40
BKK
-
STN
1 stop16h 00m
Turkish Airlines
Deal found 1/3£428

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 5 March 2026
Explore Southeast Asia
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Flights to Boracay

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 5 March 2026.

Return from

£424

One-way from

£275

Popular in

July

Cheapest in

May

Average price

£623
China Eastern
  • China Eastern
  • 15/3-25/3
  • 3 total stops
  • 40h 40m total
  • London to Bangkok
Search Deals
China Eastern
  • China Eastern
  • 15/3
  • 2 total stops
  • 22h 35m total
  • London to Southeast Asia
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£84 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% 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 5 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

Tue 26/5

21:20-21:55

1 stop18h 35m

Bangkok Suvarnabhumi

Wed 17/6

02:10-18:40

1 stop22h 30m

£430

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 8/5

22:05-02:15

1 stop22h 10m

Bangkok Suvarnabhumi

Sun 7/6

03:15-19:50

1 stop22h 35m

£444

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Fri 1/5

11:35-04:05

1 stop34h 30m

Bangkok Suvarnabhumi

Sun 31/5

21:55-15:10

1 stop23h 15m

£468

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Sun 3/5

19:00-18:05

1 stop17h 05m

Bangkok Suvarnabhumi

Sat 30/5

20:50-15:10

2 stops48h 20m

£472

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 11/4

20:50-17:45

1 stop14h 55m

Bangkok Suvarnabhumi

Sat 25/4

09:00-06:30

1 stop27h 30m

£511

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 13/4

20:50-17:45

1 stop14h 55m

Bangkok Suvarnabhumi

Fri 1/5

09:00-19:10

1 stop16h 10m

£513

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 16/4

20:50-06:50

1 stop28h 00m

Bangkok Suvarnabhumi

Sat 2/5

19:10-19:10

1 stop30h 00m

£513

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Mon 1/6

11:35-12:30

1 stop18h 55m

Bangkok Suvarnabhumi

Sun 5/7

19:10-15:10

1 stop26h 00m

£534

LondonSingapore

LHR - SIN

LHRSIN

London Heathrow

Thu 23/4

18:40-17:10

1 stop15h 30m

Singapore Changi

Wed 6/5

23:25-13:40

2 stops21h 15m

£537

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Fri 29/5

13:15-21:50

1 stop25h 35m

Manila Ninoy Aquino Intl

Tue 16/6

22:55-19:00

1 stop27h 05m

£548

Flights are sorted by cheapest return flights first.

Deals found on 3/3

Showing 1-10 of 60 resultsSorted by cheapest first
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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 29 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 £389

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 Oman Air.

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 5 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
1,468 reviews
Check prices

Comfort

8.0

Crew

8.6

Boarding

8.3

Overall

8.2

Food

7.8

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
8.2
Very Good
1,468 reviews
Singapore Airlines
8.2
Very Good
1,468 reviews
Check prices

Comfort

8.0

Crew

8.6

Boarding

8.3

Overall

8.2

Food

7.8

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
1,191 reviews
Singapore Airlines
8.2
Very Good
1,468 reviews
Check prices

Comfort

8.0

Crew

8.6

Boarding

8.3

Overall

8.2

Food

7.8

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
3,746 reviews
Singapore Airlines
8.2
Very Good
1,468 reviews
Check prices

Comfort

8.0

Crew

8.6

Boarding

8.3

Overall

8.2

Food

7.8

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.
Etihad Airways
7.3
Good
1,424 reviews
Singapore Airlines
8.2
Very Good
1,468 reviews
Check prices

Comfort

8.0

Crew

8.6

Boarding

8.3

Overall

8.2

Food

7.8

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
139 reviews
Singapore Airlines
8.2
Very Good
1,468 reviews
Check prices

Comfort

8.0

Crew

8.6

Boarding

8.3

Overall

8.2

Food

7.8

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 £75, however they can be found for as little as £43.

  • 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 15 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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