How long is the flight from Slovenia to London Heathrow Airport?

Airlines like Air Serbia and SWISS fly from Slovenia to London Heathrow Airport in about 13h 45m. The time it takes to get you to your destination can typically vary by up to 3h. Airlines will cover a distance of 766 mi. Both multi-stop and direct flights can be found to your destination and back.

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 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 Wednesday afternoons when fares are most often at their lowest. Wednesday 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 £147, our data shows the cheapest flight currently is £103. When looking at the most popular route, (Ljubljana Joze Pucnik - London Heathrow), you can expect to pay £151 for that flight.

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

Departing on a Tuesday is a good option for securing a great price. You can expect to save up to 67% 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 £167 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 £256 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 £166 for the month, but tickets can be as low as £56. 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.

£59+ Cheap Flights from Slovenia to London Heathrow Airport

Cheap flight deals from Slovenia to Heathrow

Round-trip from	£141
One-way from	£59
Popular in	August
Cheapest in	March
Average price	£199
Good one-way deal	£147 or less

Air Serbia
24/10-2/11
2 total stops
22h 20m total
Slovenia to London

Search Deals

Air Serbia
19/10
1 total stop
27h 50m total
Slovenia to London

Search Deals

Highest demand for flights based on searches. 24% potential increase in price (£39 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (£6 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 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 1 September 2025.

Fri 24/1020:45LJU - LHR

1 stop16h 45mAir Serbia

Sun 2/1113:20LHR - LJU

1 stop5h 35mAir Serbia

Deal found 31/8£141

Fri 10/1018:35LJU - LHR

1 stop4h 00mMultiple Airlines

Fri 17/1006:00LHR - LJU

1 stop25h 15mMultiple Airlines

Deal found 1/9£149

Sat 22/1109:45LJU - LHR

1 stop7h 05mMultiple Airlines

Tue 25/1112:05LHR - LJU

1 stop9h 20mMultiple Airlines

Deal found 31/8£151

Sat 8/1109:45LJU - LHR

1 stop7h 05mMultiple Airlines

Wed 12/1112:05LHR - LJU

1 stop9h 20mMultiple Airlines

Deal found 31/8£152

Sat 29/1106:30LJU - LHR

1 stop13h 45mSWISS

Thu 4/1217:10LHR - LJU

1 stop4h 05mSWISS

Deal found 31/8£152

Wed 15/1019:25LJU - LHR

1 stop13h 30mMultiple Airlines

Wed 22/1009:00LHR - LJU

1 stop9h 25mMultiple Airlines

Deal found 31/8£155

Thu 16/1020:45LJU - LHR

1 stop16h 45mAir Serbia

Mon 20/1013:30LHR - LJU

1 stop18h 30mAir Serbia

Deal found 1/9£155

Wed 8/1010:50LJU - LHR

1 stop6h 35mSWISS

Tue 14/1006:00LHR - LJU

1 stop11h 35mSWISS

Deal found 30/8£157

Sat 27/917:10LJU - LHR

1 stop5h 25mMultiple Airlines

Sat 4/1008:45LHR - LJU

1 stop8h 50mMultiple Airlines

Deal found 30/8£158

Sat 27/917:10LJU - LHR

1 stop4h 45mMultiple Airlines

Tue 30/908:45LHR - LJU

1 stop8h 50mMultiple Airlines

Deal found 31/8£160

Fri 17/1018:35LJU - LHR

1 stop4h 00mBrussels Airlines

Sat 18/1011:05LHR - LJU

1 stop4h 20mBrussels Airlines

Deal found 31/8£161

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 1 September 2025.

Fri 24/1020:45LJU - LHR

1 stop16h 45mAir Serbia

Sun 2/1113:20LHR - LJU

1 stop5h 35mAir Serbia

Deal found 31/8£141

Fri 10/1018:35LJU - LHR

1 stop4h 00mMultiple Airlines

Fri 17/1006:00LHR - LJU

1 stop25h 15mMultiple Airlines

Deal found 1/9£149

Sat 29/1106:30LJU - LHR

1 stop13h 45mSWISS

Thu 4/1217:10LHR - LJU

1 stop4h 05mSWISS

Deal found 31/8£152

Sat 22/1109:45LJU - LHR

1 stop7h 05mMultiple Airlines

Tue 25/1112:05LHR - LJU

1 stop9h 20mMultiple Airlines

Deal found 31/8£151

Tue 18/1120:45LJU - LHR

1 stop16h 35mAir Serbia

Sat 22/1113:20LHR - LJU

1 stop18h 35mAir Serbia

Deal found 29/8£155

Sat 8/1109:45LJU - LHR

1 stop7h 05mMultiple Airlines

Wed 12/1112:05LHR - LJU

1 stop9h 20mMultiple Airlines

Deal found 31/8£152

Thu 23/1020:45LJU - LHR

1 stop16h 45mAir Serbia

Thu 30/1013:20LHR - LJU

1 stop18h 05mAir Serbia

Deal found 31/8£155

Wed 15/1019:25LJU - LHR

1 stop13h 30mMultiple Airlines

Wed 22/1009:00LHR - LJU

1 stop9h 25mMultiple Airlines

Deal found 31/8£155

Thu 16/1009:40LJU - LHR

1 stop27h 50mAir Serbia

Mon 20/1013:30LHR - LJU

1 stop18h 30mAir Serbia

Deal found 30/8£155

Sat 25/1014:55LJU - LHR

1 stop23h 25mAir Serbia

Fri 31/1013:20LHR - LJU

1 stop18h 35mAir Serbia

Deal found 31/8£155

Direct flights from Slovenia to Heathrow
Explore direct flight options from Slovenia to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 1 September 2025.

Wed 15/1018:00LJU - LHR

Nonstop2h 20mBritish Airways

Wed 22/1014:00LHR - LJU

Nonstop2h 15mBritish Airways

Deal found 31/8£195

Sat 18/1011:00LJU - LHR

Nonstop2h 25mBritish Airways

Mon 20/1011:00LHR - LJU

Nonstop2h 15mBritish Airways

Deal found 31/8£201

Fri 17/1021:05LJU - LHR

Nonstop2h 20mBritish Airways

Sat 18/1007:00LHR - LJU

Nonstop2h 10mBritish Airways

Deal found 31/8£208

Fri 10/1021:05LJU - LHR

Nonstop2h 20mBritish Airways

Fri 17/1017:10LHR - LJU

Nonstop2h 10mBritish Airways

Deal found 1/9£212

Sat 27/911:00LJU - LHR

Nonstop2h 25mBritish Airways

Sat 4/1007:00LHR - LJU

Nonstop2h 10mBritish Airways

Deal found 30/8£301

Mon 22/915:10LJU - LHR

Nonstop2h 25mBritish Airways

Fri 26/917:10LHR - LJU

Nonstop2h 10mBritish Airways

Deal found 31/8£320

Thu 18/919:00LJU - LHR

Nonstop2h 20mBritish Airways

Mon 29/911:00LHR - LJU

Nonstop2h 15mBritish Airways

Deal found 1/9£335

Tue 23/917:00LJU - LHR

Nonstop2h 25mBritish Airways

Fri 26/917:10LHR - LJU

Nonstop2h 10mBritish Airways

Deal found 30/8£343

Sat 27/911:00LJU - LHR

Nonstop2h 25mBritish Airways

Mon 29/911:00LHR - LJU

Nonstop2h 15mBritish Airways

Deal found 30/8£383

Mon 29/915:10LJU - LHR

Nonstop2h 25mBritish Airways

Mon 6/1011:00LHR - LJU

Nonstop2h 15mBritish Airways

Deal found 1/9£570

Last-minute flights from Slovenia to Heathrow
Discover last-minute flight deals from Slovenia to Heathrow. Data last updated 1 September 2025 and is based on user searches.

Tue 9/917:05LJU - LHR

1 stop25h 15mLOT

Thu 18/906:30LHR - LJU

1 stop5h 15mLOT

Deal found 30/8£210

Thu 18/919:20LJU - LHR

1 stop13h 35mSWISS

Mon 29/918:40LHR - LJU

1 stop14h 25mSWISS

Deal found 1/9£179

Mon 22/920:45LJU - LHR

1 stop16h 45mMultiple Airlines

Fri 26/920:05LHR - LJU

1 stop11h 10mMultiple Airlines

Deal found 31/8£206

Tue 23/920:45LJU - LHR

1 stop16h 45mMultiple Airlines

Fri 26/917:10LHR - LJU

Nonstop2h 10mMultiple Airlines

Deal found 30/8£181

Sat 27/917:10LJU - LHR

1 stop5h 25mMultiple Airlines

Sat 4/1008:45LHR - LJU

1 stop8h 50mMultiple Airlines

Deal found 30/8£158

Sat 27/917:10LJU - LHR

1 stop4h 45mMultiple Airlines

Tue 30/908:45LHR - LJU

1 stop8h 50mMultiple Airlines

Deal found 31/8£160

Sat 27/917:10LJU - LHR

1 stop4h 45mMultiple Airlines

Mon 29/908:40LHR - LJU

1 stop8h 55mMultiple Airlines

Deal found 30/8£171

Sun 28/920:45LJU - LHR

1 stop16h 45mAir Serbia

Sun 5/1019:25LHR - LJU

1 stop23h 35mAir Serbia

Deal found 31/8£192

Mon 29/919:20LJU - LHR

1 stop13h 35mSWISS

Mon 6/1006:00LHR - LJU

1 stop11h 35mSWISS

Deal found 1/9£162

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 1 September 2025.

Sun 19/1009:40LJU - LHR

1 stop27h 50mAir Serbia

Deal found 30/8£59

Mon 13/1020:45LJU - LHR

1 stop16h 45mAir Serbia

Deal found 31/8£61

Mon 6/1014:55LJU - LHR

1 stop22h 35mAir Serbia

Deal found 30/8£66

Thu 2/1020:45LJU - LHR

1 stop16h 45mAir Serbia

Deal found 31/8£67

Fri 19/920:45LJU - LHR

1 stop16h 45mAir Serbia

Deal found 1/9£72

Wed 18/209:45LJU - LHR

1 stop27h 35mAir Serbia

Deal found 1/9£80

Wed 1/1020:45LJU - LHR

1 stop16h 45mAir Serbia

Deal found 31/8£81

Wed 8/1020:45LJU - LHR

1 stop16h 45mAir Serbia

Deal found 31/8£82

Thu 18/920:45LJU - LHR

1 stop16h 45mAir Serbia

Deal found 1/9£83

Sat 25/1014:55LJU - LHR

1 stop23h 25mAir Serbia

Deal found 31/8£84

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

Fri 24/10

20:45-12:30

1 stop16h 45m

London Heathrow

Sun 2/11

13:20-19:55

1 stop5h 35m

£141

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Fri 10/10

18:35-21:35

1 stop4h 00m

London Heathrow

Fri 17/10

06:00-08:15

1 stop25h 15m

£149

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Sat 22/11

09:45-15:50

1 stop7h 05m

London Heathrow

Tue 25/11

12:05-22:25

1 stop9h 20m

£151

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Sat 8/11

09:45-15:50

1 stop7h 05m

London Heathrow

Wed 12/11

12:05-22:25

1 stop9h 20m

£152

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Sat 29/11

06:30-19:15

1 stop13h 45m

London Heathrow

Thu 4/12

17:10-22:15

1 stop4h 05m

£152

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Tue 18/11

20:45-12:20

1 stop16h 35m

London Heathrow

Sat 22/11

13:20-08:55

1 stop18h 35m

£155

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Wed 15/10

19:25-07:55

1 stop13h 30m

London Heathrow

Wed 22/10

09:00-19:25

1 stop9h 25m

£155

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Thu 23/10

20:45-12:30

1 stop16h 45m

London Heathrow

Thu 30/10

13:20-08:25

1 stop18h 05m

£155

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Thu 16/10

09:40-12:30

1 stop27h 50m

London Heathrow

Mon 20/10

13:30-09:00

1 stop18h 30m

£155

LjubljanaLondon

LJU - LHR

LJULHR

Ljubljana Joze Pucnik

Sat 25/10

14:55-13:20

1 stop23h 25m

London Heathrow

Fri 31/10

13:20-08:55

1 stop18h 35m

£155

Flights are sorted by cheapest return flights first.

Deals found on 30/8

Showing 1-10 of 19 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 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 1% on the flight price compared to flying in the morning, which is usually more expensive.

Related info for your journey

How long is the flight from Slovenia to London Heathrow Airport?
Airlines like Air Serbia and SWISS fly from Slovenia to London Heathrow Airport in about 13h 45m. The time it takes to get you to your destination can typically vary by up to 3h. Airlines will cover a distance of 766 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest flights from Slovenia to London Heathrow Airport?
While on average a flight from Slovenia to London Heathrow Airport is generally £147, our data shows the cheapest flight currently is £103. When looking at the most popular route, (Ljubljana Joze Pucnik - London Heathrow), you can expect to pay £151 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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Croydon

Hounslow

Gatwick

Slough

Northampton

Luton

Deal

Wembley

Ilford

Crawley

Hayes

Watford

Folkestone

Ipswich

Chichester

Winchester

Eastbourne

Swindon

Dartford

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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 £59

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 19/10. 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 1 September 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 1 September 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 1 September 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 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 1 September 2025.

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.

How long is the flight from Slovenia to London Heathrow Airport?

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 London Heathrow Airport?

Browse thousands of different options on Cheapflights for your next trip

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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 1 September 2025.