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Cheap flights from London, ON to Southeast Europe from C$ 935

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 18/9. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — ATH
10 Aug — 17 Aug1
1 adult

Cheap flight deals from London to Southeast Europe

Keep the following information in mind while searching for London to Southeast Europe flight deals. Data was last updated 5 August 2025.

Round-trip from

C$ 1,496

One-way from

C$ 935

Popular in

December

Cheapest in

May

Average price

C$ 1,690
Air Canada
  • Air Canada
  • 29/9-3/10
  • 4 total stops
  • 53h 17m total
  • London to Southeast Europe
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WestJet
  • WestJet
  • 18/9
  • 2 total stops
  • 34h 15m total
  • London to Southeast Europe
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 213 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 68 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
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Find flight deals from London to Southeast Europe

Cheapest flights from London to Southeast Europe
Explore the most affordable flight options available from London to Southeast Europe. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 August 2025.

Mon 29/910:00 a.m.YXU - SOF
2 stops19h 00mAir Canada
Fri 3/106:00 a.m.SOF - YXU
2 stops34h 17mAir Canada
Deal found 3/8C$ 1,496
Thu 16/103:40 p.m.YXU - DBV
2 stops18h 30mLufthansa
Mon 20/106:55 p.m.DBV - YXU
2 stops32h 32mLufthansa
Deal found 3/8C$ 1,543
Mon 29/910:00 a.m.YXU - SOF
2 stops25h 40mLufthansa
Fri 3/107:25 p.m.SOF - YXU
2 stops50h 37mLufthansa
Deal found 2/8C$ 1,638
Sat 23/85:55 p.m.YXU - ZAG
2 stops45h 30mSWISS
Tue 30/95:50 p.m.ZAG - YXU
2 stops33h 37mSWISS
Deal found 2/8C$ 2,055
Tue 19/83:40 p.m.YXU - CLJ
2 stops14h 25mAir Canada
Sat 23/86:00 a.m.CLJ - YXU
2 stops22h 27mAir Canada
Deal found 3/8C$ 2,338

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to Southeast Europe 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 5 August 2025.
Use the filters below to find and compare flights from London to Southeast Europe that are best for you.

Fly from

London

Fly to

Southeast Europe

Route

Depart

Return

Price

LondonSofia

YXU - SOF

YXUSOF

London

Mon 29/9

10:00 a.m.-12:00 p.m.

2 stops19h 00m

Sofia

Fri 3/10

6:00 a.m.-9:17 a.m.

2 stops34h 17m

C$ 1,496

LondonDubrovnik

YXU - DBV

YXUDBV

London

Thu 16/10

3:40 p.m.-4:10 p.m.

2 stops18h 30m

Dubrovnik

Mon 20/10

6:55 p.m.-9:27 p.m.

2 stops32h 32m

C$ 1,543

LondonSofia

YXU - SOF

YXUSOF

London

Mon 29/9

10:00 a.m.-6:40 p.m.

2 stops25h 40m

Sofia

Fri 3/10

7:25 p.m.-3:02 p.m.

2 stops50h 37m

C$ 1,638

LondonZagreb

YXU - ZAG

YXUZAG

London

Sat 23/8

5:55 p.m.-9:25 p.m.

2 stops45h 30m

Zagreb Franjo Tuđman

Tue 30/9

5:50 p.m.-9:27 p.m.

2 stops33h 37m

C$ 2,055

LondonCluj Napoca

YXU - CLJ

YXUCLJ

London

Tue 19/8

3:40 p.m.-1:05 p.m.

2 stops14h 25m

Cluj Napoca

Sat 23/8

6:00 a.m.-9:27 p.m.

2 stops22h 27m

C$ 2,338

LondonAthens

YXU - ATH

YXUATH

London

Thu 18/9

6:00 a.m.-11:15 p.m.

2 stops34h 15m

C$ 935

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/8

Best time to book a flight from London to Southeast Europe

Have a flexible travel schedule? Discover the best time to fly to Southeast Europe 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 Europe

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

Currently, November is the cheapest month in which you can book a flight from London, Ontario to Southeast Europe (average of C$ 694). Flying from London, Ontario to Southeast Europe in December is currently the most expensive (average of C$ 980). 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.

Reviews of airlines servicing Southeast Europe

Get insights into the airlines that provide service to Southeast Europe. 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 Europe. Reviews last updated 5 August 2025.
Read through reviews of airlines operating flights from London to Southeast Europe, such as SWISS,WestJet, andAir Canada. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
SWISS
7.6
Good
1,687 reviews
Check prices

Boarding

7.7

Comfort

7.4

Crew

8.2

Overall

7.6

Entertainment

6.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Elwyn,Feb 2025

MXP - ZRH

The crew and the entire experience was fantastic! Would highly recommend the company and the flight
SWISS
7.6
Good
1,687 reviews
SWISS
7.6
Good
1,687 reviews
Check prices

Boarding

7.7

Comfort

7.4

Crew

8.2

Overall

7.6

Entertainment

6.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Elwyn,Feb 2025

MXP - ZRH

The crew and the entire experience was fantastic! Would highly recommend the company and the flight
WestJet
7.2
Good
2,994 reviews
SWISS
7.6
Good
1,687 reviews
Check prices

Boarding

7.7

Comfort

7.4

Crew

8.2

Overall

7.6

Entertainment

6.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Elwyn,Feb 2025

MXP - ZRH

The crew and the entire experience was fantastic! Would highly recommend the company and the flight
Air Canada
7.1
Good
9,879 reviews
SWISS
7.6
Good
1,687 reviews
Check prices

Boarding

7.7

Comfort

7.4

Crew

8.2

Overall

7.6

Entertainment

6.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Elwyn,Feb 2025

MXP - ZRH

The crew and the entire experience was fantastic! Would highly recommend the company and the flight
Lufthansa
6.8
Okay
7,285 reviews
SWISS
7.6
Good
1,687 reviews
Check prices

Boarding

7.7

Comfort

7.4

Crew

8.2

Overall

7.6

Entertainment

6.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Elwyn,Feb 2025

MXP - ZRH

The crew and the entire experience was fantastic! Would highly recommend the company and the flight

Related info for your journey

Find useful and relevant information for your journey from London to Southeast Europe. 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 Europe?

    For a flight from London to Southeast Europe, you will be flying from London. London (YXU) is just 8.6 km from the centre of the city.

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

    While some choose either London - Sofia or London - Athens Eleftherios V., London - Dubrovnik is the most popular route from London, Ontario to Southeast Europe.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from London to Southeast Europe 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 Europe?

    Currently, November is the cheapest month in which you can book a flight from London, Ontario to Southeast Europe (average of C$ 694). Flying from London, Ontario to Southeast Europe in December is currently the most expensive (average of C$ 980). 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

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from London to Southeast Europe

Discover the top airline that operate flights from London to Southeast Europe. 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 5 August 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 1,126AverageC$ 1,418FlexibilityNo cancel feeOn-time67%
Search Air Canada 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 Europe?

Deals for London to Southeast Europe flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from London to Southeast Europe for you. Better yet — we are completely free to use.

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

Yes, we can. To see specific flights from London to Southeast Europe with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Southeast Europe from London today and book when prices fit your budget.

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