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

£60 is the cheapest one-way deal found within the past few days, from Air Serbia. You may also be able to find cheap deals on KLM and Air France, with prices starting from £108 and £109, respectively.

What is the cheapest day to fly from Slovenia to London Heathrow Airport?

Travellers seeking maximum savings on their Slovenia to London Heathrow Airport flight should consider departing on Friday evenings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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

If weather is an important factor for your trip to London Heathrow Airport, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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

While on average a flight from Slovenia to London Heathrow Airport is generally £225, our data shows the cheapest flight currently is £146. When looking at the most popular route, (Ljubljana Joze Pucnik - London Heathrow), you can expect to pay £152 for that flight.

What is the cheapest day to fly round-trip from Slovenia to London Heathrow Airport?

Departing on a Wednesday is a good option for securing a great price. You can expect to save up to 76% when planning your travel around this day of the week.

How far in advance should I book a flight from Slovenia to London Heathrow Airport?

Users have found that booking a flight from Slovenia to London Heathrow Airport at least 53 days early can save you up to 112% on average compared to booking a flight this week. If booking 53 days before your flight isn’t an option for you, users have found flights from Slovenia to London Heathrow Airport for as little as £166 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as £282 for flights departing within the next 3 days.

What is the cheapest month to fly from Slovenia to London Heathrow Airport?

Our data shows that March tends to be the cheapest month to fly to London Heathrow Airport from Slovenia. Users have commonly found prices around £165 for the month, but tickets can be as low as £55. Due to multiple factors, prepare for potentially higher prices in August.

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

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

How can I find direct flights from Slovenia to Heathrow?

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

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

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

£60+ Flights from Slovenia to London Heathrow Airport

Cheap flight deals from Slovenia to Heathrow

Round-trip from	£135
One-way from	£60
Popular in	August
Cheapest in	March
Average price	£227
Good one-way deal	£161 or less

Air Serbia
16/9-20/9
2 total stops
28h 50m total
Slovenia to London

Search Deals

Air Serbia
19/9
1 total stop
16h 45m total
Slovenia to London

Search Deals

Highest demand for flights based on searches. 23% potential increase in price (£38 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£5 potential savings vs. average return price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

Price to beat on a one-way flight from Slovenia to London Heathrow.

Search Deals

Find flight deals from Slovenia to Heathrow

Cheapest flights from Slovenia to Heathrow
Explore the most affordable flight options available from Slovenia to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

Tue 16/920:45LJU - LHR

1 stop16h 45mAir Serbia

Sat 20/919:55LHR - LJU

1 stop12h 05mAir Serbia

Deal found 9/7£135

Fri 14/1109:45LJU - LHR

1 stop12h 15mMultiple Airlines

Sun 16/1111:05LHR - LJU

1 stop3h 40mMultiple Airlines

Deal found 9/7£152

Tue 23/910:50LJU - LHR

1 stop6h 35mSWISS

Sat 27/917:10LHR - LJU

1 stop15h 55mSWISS

Deal found 9/7£157

Fri 24/1018:35LJU - LHR

1 stop4h 00mBrussels Airlines

Fri 31/1006:50LHR - LJU

1 stop7h 55mBrussels Airlines

Deal found 11/7£158

Mon 27/1020:05LJU - LHR

1 stop3h 50mLufthansa

Fri 31/1007:40LHR - LJU

1 stop10h 40mLufthansa

Deal found 10/7£164

Fri 25/721:05LJU - LHR

Nonstop2h 20mBritish Airways

Sun 27/717:25LHR - LJU

Nonstop2h 15mBritish Airways

Deal found 10/7£185

Best flights from Slovenia to Heathrow
Discover carefully curated flight deals from Slovenia to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 July 2025.

Tue 16/920:45LJU - LHR

1 stop16h 45mAir Serbia

Sat 20/919:55LHR - LJU

1 stop12h 05mAir Serbia

Deal found 9/7£135

Fri 14/1109:45LJU - LHR

1 stop12h 15mMultiple Airlines

Sun 16/1111:05LHR - LJU

1 stop3h 40mMultiple Airlines

Deal found 9/7£152

Tue 23/910:50LJU - LHR

1 stop6h 35mSWISS

Sat 27/917:10LHR - LJU

1 stop15h 55mSWISS

Deal found 9/7£157

Fri 24/1018:35LJU - LHR

1 stop4h 00mBrussels Airlines

Fri 31/1006:50LHR - LJU

1 stop7h 55mBrussels Airlines

Deal found 11/7£158

Mon 27/1020:05LJU - LHR

1 stop3h 50mLufthansa

Fri 31/1007:40LHR - LJU

1 stop10h 40mLufthansa

Deal found 10/7£164

Fri 25/721:05LJU - LHR

Nonstop2h 20mBritish Airways

Sun 27/717:25LHR - LJU

Nonstop2h 15mBritish Airways

Deal found 10/7£185

Last-minute flights from Slovenia to Heathrow
Discover last-minute flight deals from Slovenia to Heathrow. Data last updated 11 July 2025 and is based on user searches.

Wed 16/718:35LJU - LHR

1 stop4h 00mBrussels Airlines

Fri 25/707:45LHR - LJU

1 stop9h 00mBrussels Airlines

Deal found 10/7£205

Wed 16/720:00LJU - LHR

1 stop13h 15mLufthansa

Sat 26/719:10LHR - LJU

1 stop12h 50mLufthansa

Deal found 10/7£205

Wed 16/713:25LJU - LHR

1 stop9h 35mLOT

Sun 27/710:15LHR - LJU

1 stop5h 05mLOT

Deal found 10/7£293

Wed 16/718:00LJU - LHR

Nonstop2h 20mBritish Airways

Sun 27/717:25LHR - LJU

Nonstop2h 15mBritish Airways

Deal found 10/7£384

Sun 20/711:55LJU - LHR

1 stop10h 00mMultiple Airlines

Thu 24/719:10LHR - LJU

1 stop12h 45mMultiple Airlines

Deal found 10/7£212

Mon 21/719:20LJU - LHR

1 stop13h 35mSWISS

Mon 11/820:05LHR - LJU

1 stop13h 00mSWISS

Deal found 9/7£174

Mon 21/712:20LJU - LHR

2 stops20h 20mKLM

Mon 11/820:55LHR - LJU

2 stops24h 35mKLM

Deal found 9/7£301

Fri 25/721:05LJU - LHR

Nonstop2h 20mBritish Airways

Sun 27/717:25LHR - LJU

Nonstop2h 15mBritish Airways

Deal found 10/7£185

Fri 1/820:45LJU - LHR

1 stop16h 45mAir Serbia

Sun 3/819:25LHR - LJU

1 stop12h 35mAir Serbia

Deal found 10/7£174

Wed 6/810:50LJU - LHR

1 stop11h 55mSWISS

Wed 13/806:00LHR - LJU

1 stop11h 35mSWISS

Deal found 9/7£162

Thu 7/806:40LJU - LHR

1 stop10h 00mMultiple Airlines

Mon 11/820:05LHR - LJU

1 stop13h 00mMultiple Airlines

Deal found 10/7£169

Thu 7/806:40LJU - LHR

1 stop10h 00mLufthansa

Mon 11/819:10LHR - LJU

1 stop12h 50mLufthansa

Deal found 10/7£177

One-way flights from Slovenia to Heathrow
Search for one-way flight options from Slovenia to Heathrow. Find affordable one-way fares based on user searches. Data last updated 11 July 2025.

Fri 19/920:45LJU - LHR

1 stop16h 45mAir Serbia

Deal found 9/7£60

Tue 30/1212:50LJU - LHR

1 stop5h 10mKLM

Deal found 9/7£108

Tue 5/812:20LJU - LHR

1 stop10h 05mAir France

Deal found 9/7£109

Mon 3/1120:05LJU - LHR

1 stop3h 50mLufthansa

Deal found 8/7£116

Tue 23/910:50LJU - LHR

1 stop8h 00mSWISS

Deal found 10/7£116

Thu 11/918:35LJU - LHR

1 stop4h 00mBrussels Airlines

Deal found 9/7£120

Fri 25/721:05LJU - LHR

Nonstop2h 20mBritish Airways

Deal found 10/7£125

Tue 26/815:05LJU - LHR

1 stop4h 45mEurowings

Deal found 11/7£135

Mon 29/914:55LJU - LHR

2 stops8h 35mMultiple Airlines

Deal found 11/7£141

Wed 24/917:05LJU - LHR

1 stop17h 15mLOT

Deal found 9/7£152

Sat 30/809:30LJU - LHR

1 stop13h 40mFinnair

Deal found 10/7£160

Cheapflights Fare Finder

Use the filters below to find and compare flights from Slovenia to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Tue 16/9

20:45-12:30

1 stop16h 45m

London Heathrow

Sat 20/9

19:55-09:00

1 stop12h 05m

£135

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Fri 14/11

09:45-21:00

1 stop12h 15m

London Heathrow

Sun 16/11

11:05-15:45

1 stop3h 40m

£152

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Tue 23/9

10:50-16:25

1 stop6h 35m

London Heathrow

Sat 27/9

17:10-10:05

1 stop15h 55m

£157

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Fri 24/10

18:35-21:35

1 stop4h 00m

London Heathrow

Fri 31/10

06:50-15:45

1 stop7h 55m

£158

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Mon 27/10

20:05-22:55

1 stop3h 50m

London Heathrow

Fri 31/10

07:40-19:20

1 stop10h 40m

£164

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Fri 25/7

21:05-22:25

Nonstop2h 20m

London Heathrow

Sun 27/7

17:25-20:40

Nonstop2h 15m

£185

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Fri 19/9

20:45-12:30

1 stop16h 45m

£60

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Tue 30/12

12:50-17:00

1 stop5h 10m

£108

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Tue 5/8

12:20-21:25

1 stop10h 05m

£109

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Mon 3/11

20:05-22:55

1 stop3h 50m

£116

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Showing 1-10 of 17 results

Best time to book a flight from Slovenia to Heathrow

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

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

Currently, January is the cheapest month in which you can book a flight from Slovenia to London Heathrow Airport (average of £112). Flying from Slovenia to London Heathrow Airport in August is currently the most expensive (average of £164). 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 SI to LHR?

It’s typically best to fly out from Slovenia to London Heathrow Airport at midday. Doing so could potentially save you 5% on the flight price compared to flying in the morning, which is usually more expensive.

Reviews of airlines servicing Heathrow

See what other customers who have flown with KLM, LOT, andFinnair from Slovenia to London Heathrow Airport 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

1,372 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

KLM

7.8

Good

1,372 reviews

KLM

7.8

Good

1,372 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

LOT

7.6

Good

1,096 reviews

KLM

7.8

Good

1,372 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Finnair

7.6

Good

1,312 reviews

KLM

7.8

Good

1,372 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Air France

7.5

Good

1,467 reviews

KLM

7.8

Good

1,372 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

SWISS

7.5

Good

1,655 reviews

KLM

7.8

Good

1,372 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

What are the cheapest airlines to fly from Slovenia to London Heathrow Airport one-way?
£60 is the cheapest one-way deal found within the past few days, from Air Serbia. You may also be able to find cheap deals on KLM and Air France, with prices starting from £108 and £109, respectively.
What are the cheapest flights from Slovenia to London Heathrow Airport?
While on average a flight from Slovenia to London Heathrow Airport is generally £225, our data shows the cheapest flight currently is £146. When looking at the most popular route, (Ljubljana Joze Pucnik - London Heathrow), you can expect to pay £152 for that flight.
Can I find deals for flights from Slovenia to Heathrow that include hotel bookings?
Yes. In addition to deals on Slovenia to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Slovenia to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Slovenia to Heathrow.
Can I find deals for business class flights from Slovenia to Heathrow?
Yes. Cheapflights offers flight deals from Slovenia to Heathrow 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 Slovenia to London Heathrow Airport?
Currently, January is the cheapest month in which you can book a flight from Slovenia to London Heathrow Airport (average of £112). Flying from Slovenia to London Heathrow Airport in August is currently the most expensive (average of £164). 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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Deal

Northampton

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Slough

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Watford

Winchester

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

Cheapflights makes it easy to find Slovenia to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Slovenia to Heathrow?

Millions of users choose and trust Cheapflights to book the best flight deals from Slovenia to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes! Cheapflights helps users easily find flights from Slovenia to Heathrow with no change fees.

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

Yes, Cheapflights offers price alerts on Slovenia to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Slovenia to London Heathrow Airport from £60

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 19/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Slovenia to Heathrow

Keep the following information in mind while searching for Slovenia to Heathrow flight deals. Data was last updated 11 July 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good one-way deal

Find flight deals from Slovenia to Heathrow

Cheapest flights from Slovenia to HeathrowExplore the most affordable flight options available from Slovenia to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

Explore the most affordable flight options available from Slovenia to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Slovenia to London Heathrow Airport that are best for you.

Best time to book a flight from Slovenia to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Slovenia with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Slovenia to London Heathrow Airport

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

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

Find hourly flight availability from Slovenia to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 July 2025.

Reviews of airlines servicing Heathrow

See what other customers who have flown with KLM, LOT, andFinnair from Slovenia to London Heathrow Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Slovenia to Heathrow. 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 Slovenia to London Heathrow Airport one-way?

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

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

How can I find direct flights from Slovenia to Heathrow?

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

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

Travelling to a place near Slovenia?

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.

Alternative routes for Slovenia to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

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 from Slovenia to Heathrow?

Why should you use Cheapflights to find cheap flight tickets from Slovenia to Heathrow?

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

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

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Cheapest flights from Slovenia to Heathrow
Explore the most affordable flight options available from Slovenia to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.