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Cheap flights from London Heathrow Airport to Slovenia from £82

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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LJU
18 Jun — 25 Jun1
1 adult

Cheap flight deals from Heathrow to Slovenia

Keep the following information in mind while searching for Heathrow to Slovenia flight deals. Data was last updated 13 June 2025.

Round-trip from

£152

One-way from

£82

Popular in

September

Cheapest in

March

Average price

£188

Good round-trip deal

£319 or less

Good one-way deal

£168 or less
Brussels Airlines
  • Brussels Airlines
  • 9/10-12/10
  • 2 total stops
  • 10h 20m total
  • London to Slovenia
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British Airways
  • British Airways
  • 6/10
  • Nonstop
  • 2h 15m total
  • London to Slovenia
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£27 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£6 potential savings vs. average return price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from London Heathrow to Slovenia.
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Price to beat on a one-way flight from London Heathrow to Slovenia.
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Find flight deals from Heathrow to Slovenia

Cheapest flights from Heathrow to Slovenia
Explore the most affordable flight options available from Heathrow to Slovenia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.

Thu 9/1007:25LHR - LJU
1 stop4h 10mMultiple Airlines
Sun 12/1011:55LJU - LHR
1 stop6h 10mMultiple Airlines
Deal found 10/6£152
Sun 5/1019:25LHR - LJU
1 stop12h 35mAir Serbia
Sat 11/1014:55LJU - LHR
1 stop22h 35mAir Serbia
Deal found 11/6£154
Wed 2/706:55LHR - LJU
1 stop4h 45mLufthansa
Thu 10/713:20LJU - LHR
1 stop7h 20mLufthansa
Deal found 12/6£156
Fri 5/918:40LHR - LJU
1 stop12h 35mSWISS
Wed 10/910:50LJU - LHR
1 stop8h 00mSWISS
Deal found 11/6£163
Mon 25/806:50LHR - LJU
1 stop9h 55mBrussels Airlines
Thu 4/918:35LJU - LHR
1 stop4h 00mBrussels Airlines
Deal found 12/6£169
Fri 1/818:10LHR - LJU
1 stop17h 25mLOT
Fri 8/813:25LJU - LHR
1 stop20h 55mLOT
Deal found 12/6£219
Fri 12/917:10LHR - LJU
Nonstop2h 10mBritish Airways
Fri 26/921:05LJU - LHR
Nonstop2h 20mBritish Airways
Deal found 10/6£234

Cheapflights Fare Finder

Customise your flight search to find flights from Heathrow to Slovenia 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 858,174 searches. Data last updated 13 June 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Slovenia that are best for you.

Fly from

Heathrow

Fly to

Slovenia

Route

Depart

Return

Price

LondonLjubljana

LHR - LJU

LHRLJU

London Heathrow

Wed 5/11

06:50-15:45

1 stop7h 55m

Ljubljana Joze Pucnik

Tue 11/11

10:35-17:50

1 stop8h 15m

£151

LondonLjubljana

LHR - LJU

LHRLJU

London Heathrow

Sun 5/10

19:25-09:00

1 stop12h 35m

Ljubljana Joze Pucnik

Sat 11/10

14:55-12:30

1 stop22h 35m

£154

LondonLjubljana

LHR - LJU

LHRLJU

London Heathrow

Wed 16/7

06:55-12:40

1 stop4h 45m

Ljubljana Joze Pucnik

Wed 23/7

20:00-08:15

1 stop13h 15m

£155

LondonLjubljana

LHR - LJU

LHRLJU

London Heathrow

Fri 5/9

18:40-08:15

1 stop12h 35m

Ljubljana Joze Pucnik

Wed 10/9

10:50-17:50

1 stop8h 00m

£163

LondonLjubljana

LHR - LJU

LHRLJU

London Heathrow

Mon 25/8

06:50-17:45

1 stop9h 55m

Ljubljana Joze Pucnik

Thu 4/9

18:35-21:35

1 stop4h 00m

£169

LondonLjubljana

LHR - LJU

LHRLJU

London Heathrow

Fri 1/8

18:10-12:35

1 stop17h 25m

Ljubljana Joze Pucnik

Fri 8/8

13:25-09:20

1 stop20h 55m

£219

LondonLjubljana

LHR - LJU

LHRLJU

London Heathrow

Wed 2/7

14:00-17:15

Nonstop2h 15m

Ljubljana Joze Pucnik

Wed 9/7

18:00-19:20

Nonstop2h 20m

£229

LondonLjubljana

LHR - LJU

LHRLJU

London Heathrow

Mon 25/8

20:55-11:35

2 stops13h 40m

Ljubljana Joze Pucnik

Fri 5/9

12:35-20:55

1 stop9h 20m

£269

LondonLjubljana

LHR - LJU

LHRLJU

London Heathrow

Mon 6/10

11:00-14:15

Nonstop2h 15m

£82

LondonLjubljana

LHR - LJU

LHRLJU

London Heathrow

Tue 24/6

08:05-13:55

1 stop4h 50m

£100

Flights are sorted by cheapest return flights first.

Deals found on 10/6

Showing 1-10 of 17 results
1
2

Best time to book a flight from Heathrow to Slovenia

Have a flexible travel schedule? Discover the best time to fly to Slovenia from Heathrow 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 from London Heathrow Airport to Slovenia

What is the cheapest month to book a flight from London Heathrow Airport to Slovenia?

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Slovenia (average of £103). Flying from London Heathrow Airport to Slovenia in July is currently the most expensive (average of £327). 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.

What is the cheapest time of day to fly from LHR to SI?

Find hourly flight availability from Heathrow to Slovenia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 June 2025.

One of the essential ways to save on airfare from London Heathrow Airport to Slovenia is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at midday could potentially save you up to 18% on airfare.

Rainfall in Slovenia by month

Plan your trip to Slovenia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Slovenia ranges from 40.0 - 70.0 inches per month. October is typically the wettest month, when rainfall can reach 70.0 mm. January is typically the driest time to visit Slovenia when rainfall is around 40.0 mm.

Temperature in Slovenia by month

Plan your trip to Slovenia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Slovenia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).

Reviews of airlines servicing Slovenia

Get insights into the airlines that provide service to Slovenia. 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 Slovenia. Reviews last updated 13 June 2025.
See what other customers who have flown with KLM, LOT and SWISS from London to Slovenia have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,358 reviews
Check prices

Crew

8.4

Overall

7.8

Food

7.2

Comfort

7.7

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
KLM
7.8
Good
1,358 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Crew

8.4

Overall

7.8

Food

7.2

Comfort

7.7

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
LOT
7.6
Good
1,077 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Crew

8.4

Overall

7.8

Food

7.2

Comfort

7.7

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
SWISS
7.5
Good
1,624 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Crew

8.4

Overall

7.8

Food

7.2

Comfort

7.7

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Brussels Airlines
7.4
Good
355 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Crew

8.4

Overall

7.8

Food

7.2

Comfort

7.7

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Eurowings
6.7
Okay
279 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Crew

8.4

Overall

7.8

Food

7.2

Comfort

7.7

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.

Related info for your journey

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

  • What are the cheapest airlines to fly from London Heathrow Airport to Slovenia one-way?

    The cheapest airline one-way is British Airways, with whom users have recently found tickets for as low as £82. However, be on the lookout for offers from Eurowings and KLM, as they are both options that can get you from London Heathrow Airport to Slovenia for a low price.

  • What are the cheapest flights from London Heathrow Airport to Slovenia?

    The cheapest flight price from London Heathrow Airport to Slovenia is £141. On average you can expect to pay £278. The most popular route, (London Heathrow - Ljubljana Joze Pucnik), can usually be booked for £138.

  • Can I find deals for flights from Heathrow to Slovenia that include hotel bookings?

    Yes. In addition to deals on Heathrow to Slovenia flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Slovenia?

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

  • Can I find deals for business class flights from Heathrow to Slovenia?

    Yes. Cheapflights offers flight deals from Heathrow to Slovenia 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 Heathrow Airport to Slovenia?

    Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Slovenia (average of £103). Flying from London Heathrow Airport to Slovenia in July is currently the most expensive (average of £327). 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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Alternative routes for Heathrow to Slovenia

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Top 6 airlines flying from Heathrow to Slovenia

Discover the top 6 airlines that operate flights from Heathrow to Slovenia. 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 858,174 searches. Data last updated 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£65Average£146FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£133Average£284FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£140Average£195FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Brussels AirlinesCheapest£144Average£231FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
LOTCheapest£145Average£227FlexibilityNo cancel feeOn-time81%
Search LOT flights
SWISSCheapest£149Average£197FlexibilityNo cancel feeOn-time79%
Search SWISS flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Heathrow to Slovenia?

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Can Cheapflights find flights from Heathrow to Slovenia with no change fees?

Certainly. Search results for flights to Slovenia from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Heathrow to Slovenia become cheaper?

Not ready to book yet? You can track prices for flights from Heathrow to Slovenia on Cheapflights with our Price Alert feature and get notified when better prices are available.

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