Find flights
Deals
Airlines

£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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
— BKK
15 Mar — 22 Mar1
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 13 February 2026.

Sat 7/320:20
LGW
-
BKK
1 stop22h 30m
China Southern
Mon 16/303:00
BKK
-
LGW
1 stop21h 20m
China Southern
Deal found 10/2£403
Wed 4/321:00
LHR
-
BKK
1 stop19h 55m
China Eastern
Sat 21/319:55
BKK
-
LHR
1 stop28h 35m
China Eastern
Deal found 10/2£403
Sun 1/1110:30
LGW
-
BKK
3 stops26h 40m
China Eastern
Sat 14/1101:55
BKK
-
LGW
1 stop35h 35m
China Eastern
Deal found 9/2£403
Thu 30/414:00
LHR
-
BKK
1 stop20h 55m
Air India
Sat 9/514:45
BKK
-
LHR
1 stop25h 30m
Air India
Deal found 11/2£403
Sat 31/1010:30
LGW
-
BKK
3 stops29h 05m
China Eastern
Sat 14/1101:55
BKK
-
LGW
1 stop35h 35m
China Eastern
Deal found 10/2£404
Mon 1/609:45
LHR
-
BKK
1 stop22h 30m
Air India
Sat 20/620:20
BKK
-
LHR
1 stop19h 55m
Air India
Deal found 11/2£404
Wed 18/311:05
LGW
-
BKK
1 stop31h 25m
Air China
Tue 12/519:35
BKK
-
LGW
1 stop17h 00m
Air China
Deal found 10/2£405
Tue 3/320:25
LHR
-
BKK
1 stop20h 45m
Air China
Wed 18/317:55
BKK
-
LHR
1 stop32h 45m
Air China
Deal found 11/2£405
Thu 12/311:05
LGW
-
BKK
1 stop31h 25m
Air China
Mon 23/302:30
BKK
-
LGW
1 stop35h 25m
Air China
Deal found 11/2£406
Thu 7/522:40
LHR
-
BKK
1 stop19h 30m
Air China
Wed 20/501:30
BKK
-
LHR
1 stop22h 10m
Air China
Deal found 10/2£406
Tue 10/311:05
LGW
-
BKK
1 stop31h 25m
Air China
Mon 23/302:30
BKK
-
LGW
1 stop35h 25m
Air China
Deal found 10/2£406
Tue 12/522:40
LHR
-
BKK
1 stop37h 40m
Air China
Fri 22/518:20
BKK
-
LHR
1 stop31h 55m
Air China
Deal found 13/2£406

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 13 February 2026
Explore Southeast Asia
Flights to Bangkok
Flights to Manila
Flights to Kuala Lumpur
Flights to Denpasar
Flights to Phuket City
Flights to Singapore
Flights to Ho Chi Minh City
Flights to Cebu City
Flights to Hanoi
Flights to Angeles City
Flights to Jakarta
Flights to Ko Samui
Flights to Davao City
Flights to Penang
Flights to Phnom Penh
Flights to Chiang Mai
Flights to Da Nang
Flights to Krabi
Flights to Kota Kinabalu
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 13 February 2026.

Return from

£403

One-way from

£265

Popular in

July

Cheapest in

May

Average price

£607
China Southern
  • China Southern
  • 7/3-16/3
  • 2 total stops
  • 43h 50m total
  • London to Bangkok
Search Deals
9/3
  • 9/3
  • 2 total stops
  • 24h 00m 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 February 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 13 February 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

LHR - BKK

LHRBKK

London Heathrow

Mon 9/3

21:00-22:25

1 stop18h 25m

Bangkok Suvarnabhumi

Thu 26/3

19:55-17:30

1 stop28h 35m

£413

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 2/3

21:10-11:10

1 stop31h 00m

Bangkok Suvarnabhumi

Fri 13/3

19:30-19:10

1 stop30h 40m

£427

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 4/3

21:10-18:30

1 stop38h 20m

Bangkok Suvarnabhumi

Tue 10/3

03:15-19:10

1 stop22h 55m

£427

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 1/5

22:05-18:30

1 stop38h 25m

Bangkok Suvarnabhumi

Sun 31/5

12:10-19:50

1 stop37h 40m

£438

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 24/4

22:05-18:30

1 stop38h 25m

Bangkok Suvarnabhumi

Sun 24/5

12:10-19:50

1 stop37h 40m

£439

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 19/4

22:05-02:15

1 stop22h 10m

Bangkok Suvarnabhumi

Tue 5/5

12:10-20:00

1 stop37h 50m

£448

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Sun 8/3

10:30-15:55

1 stop22h 25m

Bangkok Suvarnabhumi

Thu 19/3

19:55-14:00

1 stop25h 05m

£449

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Fri 6/3

10:30-12:20

1 stop18h 50m

Bangkok Suvarnabhumi

Tue 10/3

03:40-06:30

2 stops33h 50m

£453

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Tue 3/3

10:30-17:50

1 stop24h 20m

Bangkok Suvarnabhumi

Sun 22/3

02:35-14:00

3 stops42h 25m

£453

LondonBangkok

LGW - BKK

LGWBKK

London Gatwick

Fri 6/3

10:30-12:20

1 stop18h 50m

Bangkok Suvarnabhumi

Thu 12/3

15:55-14:00

2 stops29h 05m

£453

Flights are sorted by cheapest return flights first.

Deals found on 9/2

Showing 1-10 of 60 results
1
2
3
...
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 2 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, Thai Airways and Etihad Airways.

Etihad Airways
Etihad Airways
From £323
Qatar Airways
Qatar Airways
From £429
Emirates
Emirates
From £280
Singapore Airlines
Singapore Airlines
From £381

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 13 February 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
1,452 reviews
Check prices

Crew

8.6

Comfort

8.0

Overall

8.2

Entertainment

8.0

Food

7.8

Boarding

8.3

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
1,452 reviews
Singapore Airlines
8.2
Very Good
1,452 reviews
Check prices

Crew

8.6

Comfort

8.0

Overall

8.2

Entertainment

8.0

Food

7.8

Boarding

8.3

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
1,162 reviews
Singapore Airlines
8.2
Very Good
1,452 reviews
Check prices

Crew

8.6

Comfort

8.0

Overall

8.2

Entertainment

8.0

Food

7.8

Boarding

8.3

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
3,731 reviews
Singapore Airlines
8.2
Very Good
1,452 reviews
Check prices

Crew

8.6

Comfort

8.0

Overall

8.2

Entertainment

8.0

Food

7.8

Boarding

8.3

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
1,394 reviews
Singapore Airlines
8.2
Very Good
1,452 reviews
Check prices

Crew

8.6

Comfort

8.0

Overall

8.2

Entertainment

8.0

Food

7.8

Boarding

8.3

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
1,452 reviews
Check prices

Crew

8.6

Comfort

8.0

Overall

8.2

Entertainment

8.0

Food

7.8

Boarding

8.3

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 £62, however they can be found for as little as £40.

  • 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Search flights to Southeast Asia by cabin class

Find flights to Southeast Asia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Premium Economy Class
Economy class

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights to Southeast Asia?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Southeast Asia today with Cheapflights!

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.