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Cheap flights from London, ON to Southeast Asia from C$ 858

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 17/5. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — BKK
19 May — 26 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Southeast Asia

Enter your travel dates to find the best prices.

Cheapest flights from London to Southeast Asia
Explore the most affordable flight options available from London to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 April 2026.

Sun 20/93:30 p.m.
YXU
-
SIN
2 stops50h 45m
United Airlines
Thu 24/98:45 a.m.
SIN
-
YXU
2 stops36h 10m
United Airlines
Deal found 17/4C$ 1,622
Thu 10/95:40 a.m.
YXU
-
MNL
2 stops25h 20m
United Airlines
Mon 14/98:40 a.m.
MNL
-
YXU
2 stops45h 05m
United Airlines
Deal found 14/4C$ 1,666
Thu 10/99:30 a.m.
YXU
-
MNL
2 stops32h 50m
Air Canada
Mon 14/99:25 a.m.
MNL
-
YXU
2 stops24h 15m
Air Canada
Deal found 15/4C$ 1,732
Sun 20/95:40 a.m.
YXU
-
SIN
2 stops35h 35m
Air Canada
Thu 24/97:00 a.m.
SIN
-
YXU
2 stops22h 45m
Air Canada
Deal found 18/4C$ 1,864
Tue 2/612:20 p.m.
YXU
-
BKK
2 stops32h 40m
Emirates
Mon 22/63:40 a.m.
BKK
-
YXU
2 stops46h 17m
Emirates
Deal found 16/4C$ 1,866
Tue 2/63:30 p.m.
YXU
-
BKK
2 stops28h 20m
Multiple Airlines
Mon 22/62:30 a.m.
BKK
-
YXU
2 stops30h 07m
Multiple Airlines
Deal found 16/4C$ 1,899
Sat 16/56:10 p.m.
YXU
-
MNL
2 stops34h 20m
Multiple Airlines
Sat 6/69:10 p.m.
MNL
-
YXU
3 stops44h 10m
Multiple Airlines
Deal found 17/4C$ 1,930
Mon 18/56:10 a.m.
YXU
-
MNL
3 stops46h 20m
Multiple Airlines
Mon 25/512:30 p.m.
MNL
-
YXU
3 stops28h 50m
Multiple Airlines
Deal found 18/4C$ 2,015
Mon 18/56:10 a.m.
YXU
-
MNL
2 stops35h 35m
Philippine Airlines
Mon 25/58:40 p.m.
MNL
-
YXU
2 stops20h 40m
Philippine Airlines
Deal found 18/4C$ 2,016
Tue 2/612:20 p.m.
YXU
-
SIN
2 stops29h 10m
Multiple Airlines
Tue 9/67:00 a.m.
SIN
-
YXU
3 stops34h 20m
Multiple Airlines
Deal found 17/4C$ 2,130
Sat 16/56:10 a.m.
YXU
-
MNL
2 stops35h 35m
Philippine Airlines
Sat 6/68:40 p.m.
MNL
-
YXU
2 stops20h 40m
Philippine Airlines
Deal found 17/4C$ 2,130
Tue 2/66:10 p.m.
YXU
-
SIN
2 stops27h 10m
Multiple Airlines
Mon 22/63:15 a.m.
SIN
-
YXU
2 stops44h 27m
Multiple Airlines
Deal found 16/4C$ 2,248

Find flight deals from London to Southeast Asia

Keep the following information in mind while searching for London to Southeast Asia flight deals. Data was last updated 19 April 2026.

Round-trip from

C$ 1,622

One-way from

C$ 858
United Airlines
  • United Airlines
  • 20/9-24/9
  • 4 total stops
  • 86h 55m total
  • London to Southeast Asia
Search Deals
17/5
  • 17/5
  • 2 total stops
  • 40h 45m total
  • London to Southeast Asia
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to Southeast Asia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 19 April 2026.
Use the filters below to find and compare flights from London to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonSingapore

YXU - SIN

YXUSIN

London

Sun 20/9

3:30 p.m.-6:15 a.m.

2 stops50h 45m

Singapore Changi

Thu 24/9

8:45 a.m.-8:55 a.m.

2 stops36h 10m

C$ 1,622

LondonManila

YXU - MNL

YXUMNL

London

Thu 10/9

5:40 a.m.-7:00 p.m.

2 stops25h 20m

Manila Ninoy Aquino Intl

Mon 14/9

8:40 a.m.-5:45 p.m.

2 stops45h 05m

C$ 1,666

LondonManila

YXU - MNL

YXUMNL

London

Thu 10/9

9:30 a.m.-6:20 a.m.

2 stops32h 50m

Manila Ninoy Aquino Intl

Mon 14/9

9:25 a.m.-9:40 p.m.

2 stops24h 15m

C$ 1,732

LondonSingapore

YXU - SIN

YXUSIN

London

Sun 20/9

5:40 a.m.-5:15 a.m.

2 stops35h 35m

Singapore Changi

Thu 24/9

7:00 a.m.-5:45 p.m.

2 stops22h 45m

C$ 1,864

LondonBangkok

YXU - BKK

YXUBKK

London

Tue 2/6

3:30 p.m.-6:50 a.m.

2 stops28h 20m

Bangkok Suvarnabhumi

Mon 22/6

2:30 a.m.-9:37 p.m.

2 stops30h 07m

C$ 1,899

LondonManila

YXU - MNL

YXUMNL

London

Mon 18/5

6:10 a.m.-4:30 p.m.

3 stops46h 20m

Manila Ninoy Aquino Intl

Mon 25/5

12:30 p.m.-5:20 a.m.

3 stops28h 50m

C$ 2,015
Quickest round-trip

LondonManila

YXU - MNL

YXUMNL

London

Mon 18/5

6:10 a.m.-5:45 a.m.

2 stops35h 35m

Manila Ninoy Aquino Intl

Mon 25/5

8:40 p.m.-5:20 a.m.

2 stops20h 40m

C$ 2,016

LondonManila

YXU - MNL

YXUMNL

London

Sat 16/5

6:10 a.m.-10:55 p.m.

3 stops28h 45m

Manila Ninoy Aquino Intl

Sat 6/6

9:10 p.m.-5:20 a.m.

3 stops44h 10m

C$ 2,076

LondonManila

YXU - MNL

YXUMNL

London

Sat 16/5

6:10 a.m.-5:45 a.m.

2 stops35h 35m

Manila Ninoy Aquino Intl

Sat 6/6

8:40 p.m.-5:20 a.m.

2 stops20h 40m

C$ 2,130

LondonSingapore

YXU - SIN

YXUSIN

London

Tue 2/6

12:20 p.m.-5:30 a.m.

2 stops29h 10m

Singapore Changi

Tue 9/6

7:00 a.m.-5:20 a.m.

3 stops34h 20m

C$ 2,130

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/4

Showing 1-10 of 27 resultsSorted by cheapest first
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2
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Best time to book a flight from London to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from London with our price prediction graph.
Estimated round-trip 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 from London to Southeast Asia
No data available for this route at this time. Please check back soon.

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 19 April 2026.
Get a feel of what it's like to fly with United Airlines from London to Southeast Asia by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,604 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,604 reviews
United Airlines
7.4
Good
9,604 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Related info for your journey

Find useful and relevant information for your journey from London to Southeast Asia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from London to Southeast Asia?

    Located just 8.6 km from the city centre, London (YXU) is the airport most travellers will use when flying to Southeast Asia from London.

  • How long is the flight from London, Ontario to Southeast Asia?

    A quick flight from London, Ontario to Southeast Asia can take about 32h 40m. United Airlines provides one of the quickest options available for as low as C$ 1,866. There are 13696 km between London, Ontario and Southeast Asia. This flight may include one or multiple stops.

  • What are the most popular routes from London, Ontario to Southeast Asia?

    The most popular route from London, Ontario to Southeast Asia is London - Singapore Changi. You may also consider London - Manila Ninoy Aquino Intl or London - Bangkok Suvarnabhumi.

  • Can I find deals for flights from London to Southeast Asia that include hotel bookings?

    Yes. In addition to deals on London to Southeast Asia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from London to Southeast Asia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Southeast Asia.

  • Can I find deals for business class flights from London to Southeast Asia?

    Yes. Cheapflights offers flight deals from London to Southeast Asia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for London to Southeast Asia

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Top airline flying from London to Southeast Asia

Discover the top airline that operate flights from London to Southeast Asia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 19 April 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 1,171AverageC$ 1,650FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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

How does Cheapflights help users find flights from London to Southeast Asia?

When you search for this flight from London to Southeast Asia, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from London to Southeast Asia?

Cheapflights helps you find that perfect flight to Southeast Asia from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from London to Southeast Asia with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Southeast Asia flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from London to Southeast Asia become cheaper?

Yes! Start tracking prices for London to Southeast Asia flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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