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Cheap flights from London, ON to Southeast Asia from C$ 791

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 18/3. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — BKK
9 Mar — 16 Mar1
1 adult

Cheap 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 4 March 2025.

Round-trip from

C$ 1,593

One-way from

C$ 791
Air Canada
  • Air Canada
  • 18/4-25/4
  • 4 total stops
  • 86h 53m total
  • London to Southeast Asia
Search Deals
Air Canada
  • Air Canada
  • 18/3
  • 2 total stops
  • 32h 20m total
  • London to Southeast Asia
Search Deals

Find flight deals from London to Southeast Asia

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 4 March 2025.

Fri 18/43:25 p.m.YXU - BKK
2 stops50h 50mAir Canada
Fri 25/48:10 a.m.BKK - YXU
2 stops36h 03mAir Canada
Deal found 3/3C$ 1,593
Fri 18/49:55 a.m.YXU - SIN
2 stops44h 30mUnited Airlines
Fri 25/49:00 a.m.SIN - YXU
2 stops47h 19mUnited Airlines
Deal found 3/3C$ 1,636
Wed 5/39:55 a.m.YXU - MNL
2 stops55h 55mUnited Airlines
Mon 31/38:40 a.m.MNL - YXU
2 stops36h 33mUnited Airlines
Deal found 3/3C$ 1,915
Fri 18/49:55 a.m.YXU - BKK
2 stops34h 45mMultiple Airlines
Fri 25/41:30 p.m.BKK - YXU
3 stops30h 43mMultiple Airlines
Deal found 3/3C$ 1,980
Fri 18/43:25 p.m.YXU - SIN
2 stops35h 30mMultiple Airlines
Thu 24/43:10 a.m.SIN - YXU
2 stops42h 03mMultiple Airlines
Deal found 3/3C$ 2,628
Sun 15/69:55 a.m.YXU - BKK
2 stops40h 30mEmirates
Fri 20/61:35 a.m.BKK - YXU
2 stops48h 22mEmirates
Deal found 3/3C$ 2,731
Wed 5/35:15 a.m.YXU - MNL
2 stops40h 20mMultiple Airlines
Sun 30/312:40 a.m.MNL - YXU
2 stops31h 38mMultiple Airlines
Deal found 3/3C$ 2,950
Sun 15/66:00 a.m.YXU - BKK
2 stops30h 00mWestJet
Sat 21/611:30 p.m.BKK - YXU
3 stops40h 44mWestJet
Deal found 3/3C$ 3,212

Find flights from London to Southeast Asia within your budget

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 4 March 2025.

Fly from

London

Fly to

Southeast Asia

Route

Depart

Return

Price

LondonBangkok

YXU - BKK

YXUBKK

London

Fri 18/4

3:25 p.m.-5:15 a.m.

2 stops50h 50m

Bangkok Suvarnabhumi

Fri 25/4

8:10 a.m.-9:13 a.m.

2 stops36h 03m

C$ 1,593

LondonSingapore

YXU - SIN

YXUSIN

London

Fri 18/4

9:55 a.m.-6:25 p.m.

2 stops44h 30m

Singapore Changi

Fri 25/4

9:00 a.m.-8:19 p.m.

2 stops47h 19m

C$ 1,636

LondonBangkok

YXU - BKK

YXUBKK

London

Fri 18/4

9:55 a.m.-7:40 a.m.

2 stops34h 45m

Bangkok Suvarnabhumi

Fri 25/4

1:30 p.m.-9:13 a.m.

3 stops30h 43m

C$ 1,980

LondonSingapore

YXU - SIN

YXUSIN

London

Fri 18/4

3:25 p.m.-2:55 p.m.

2 stops35h 30m

Singapore Changi

Thu 24/4

3:10 a.m.-9:13 a.m.

2 stops42h 03m

C$ 2,628

LondonBangkok

YXU - BKK

YXUBKK

London

Sun 15/6

9:55 a.m.-1:25 p.m.

2 stops40h 30m

Bangkok Suvarnabhumi

Fri 20/6

1:35 a.m.-2:57 p.m.

2 stops48h 22m

C$ 2,731

LondonBangkok

YXU - BKK

YXUBKK

London

Sun 15/6

6:00 a.m.-11:00 p.m.

2 stops30h 00m

Bangkok Suvarnabhumi

Sat 21/6

11:30 p.m.-5:14 a.m.

3 stops40h 44m

C$ 3,212

LondonBangkok

YXU - BKK

YXUBKK

London

Tue 18/3

9:55 a.m.-5:15 a.m.

2 stops32h 20m

C$ 791

LondonBangkok

YXU - BKK

YXUBKK

London

Thu 17/4

5:15 a.m.-6:00 p.m.

2 stops25h 45m

C$ 1,204

LondonBangkok

YXU - BKK

YXUBKK

London

Thu 17/4

9:55 a.m.-4:35 a.m.

3 stops31h 40m

C$ 2,601

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

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.

Travel insights for flights from London to Southeast Asia

Get recent, data-driven insights about flights from London to Southeast Asia including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from London, Ontario to Southeast Asia?

Currently, September is the cheapest month in which you can book a flight from London, Ontario to Southeast Asia (average of C$ 965). Flying from London, Ontario to Southeast Asia in July is currently the most expensive (average of C$ 1,510). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 - 400.0 mm per month. July is typically the wettest month, when rainfall can reach 400.0 mm. February 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 29.0 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 4 March 2025.
Emirates
8.1
Very good
3,232 reviews
Check prices

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Food

7.8

Overall

8.1

Reviews

1 / 20

4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Emirates
8.1
Very good
3,232 reviews
Emirates
8.1
Very good
3,232 reviews
Check prices

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Food

7.8

Overall

8.1

Reviews

1 / 20

4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

United Airlines
7.4
Good
8,678 reviews
Emirates
8.1
Very good
3,232 reviews
Check prices

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Food

7.8

Overall

8.1

Reviews

1 / 20

4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

WestJet
7.2
Good
2,788 reviews
Emirates
8.1
Very good
3,232 reviews
Check prices

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Food

7.8

Overall

8.1

Reviews

1 / 20

4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Air Canada
7.0
Good
8,833 reviews
Emirates
8.1
Very good
3,232 reviews
Check prices

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Food

7.8

Overall

8.1

Reviews

1 / 20

4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

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.

  • 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.

  • What is the cheapest month to book a flight from London, Ontario to Southeast Asia?

    Currently, September is the cheapest month in which you can book a flight from London, Ontario to Southeast Asia (average of C$ 965). Flying from London, Ontario to Southeast Asia in July is currently the most expensive (average of C$ 1,510). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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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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