What is the cheapest way to get from Sofia Airport to the city centre?

Bus line 84 and the metro (line M2, Airport Station) both connect Sofia Airport to the city centre cheaply. The metro takes around 20 minutes to the central Serdika station and runs frequently. Bus 84 is slightly slower but also very affordable. A taxi from official ranks costs roughly 15–25 BGN to the centre.

Does Bulgaria use the Euro?

Bulgaria is an EU member but uses the Bulgarian Lev (BGN). The Lev is pegged to the Euro at a fixed rate of approximately 1.95 BGN per Euro. ATMs are widely available at SOF and across Sofia. Most restaurants and shops accept cards, but smaller markets and public transport often require cash.

Do I need Priority on Wizz Air to bring a carry-on to Sofia?

Only if your bag is larger than 40 × 30 × 20 cm. Wizz Air's free allowance is one underseat bag within those dimensions. Any larger bag — including a standard carry-on roller or 40-litre backpack — requires WIZZ Priority or a paid cabin bag add-on to travel in the overhead bin.

Can I hike on Vitosha Mountain from central Sofia?

Yes. Vitosha Mountain rises directly above Sofia's southern neighbourhoods and is accessible by cable car from the Simeonovo district, about 30 minutes from the city centre by bus or rideshare. Several well-marked trails are suitable for day hikes without specialist equipment. Wear layers — it is noticeably cooler than the city even in summer.

How far is Rila Monastery from Sofia?

Rila Monastery is approximately 120 km south of Sofia, about 2.5 hours by public bus from the Ovcha Kupel bus station. It is Bulgaria's most important Orthodox monastery and a UNESCO World Heritage Site. Day trips are feasible, though staying overnight lets you see the monastery in the morning light before the tour groups arrive.

Carry-On Only for Sofia: Wizz Air, Ryanair & SOF Tips

Sofia is one of the cheapest capital cities in the European Union. A restaurant meal can cost under €5, a beer under €1, and accommodation at a level that would be mid-range in Paris costs a fraction of the price in Bulgaria. As a carry-on destination, Sofia is manageable — the main challenge is Wizz Air's strict free-bag policy, which dominates routes from Central and Eastern Europe.

Airline Quick Reference

Airline	Free cabin bag	With add-on	Weight
Wizz Air	40 × 30 × 20 cm (underseat only)	55 × 40 × 23 cm (overhead)	10 kg with Priority
Ryanair	40 × 20 × 25 cm (underseat only)	55 × 40 × 20 cm (overhead)	10 kg with Priority
Bulgaria Air	55 × 40 × 20 cm	—	10 kg
Lufthansa/Austrian	55 × 40 × 23 cm	—	varies by fare

Wizz Air: The Dominant Carrier at SOF

Wizz Air operates a high volume of routes from Sofia to Western Europe, the UK, and Scandinavia. Its carry-on rules are strict: the free bag (40 × 30 × 20 cm) goes under the seat only. Any bag larger than this — a typical 40-litre travel backpack measures around 45 × 30 × 20 cm — requires WIZZ Priority to access the overhead bin.

Priority is worth buying when you book. At the airport or gate it costs significantly more. Wizz Air staff at SOF use bag sizers on busy routes, particularly those to London Luton and Vienna.

A compliant underseat bag option: soft-sided cubes or a well-compressed day pack can genuinely fit 40 × 30 × 20 cm for short trips of two to three nights.

Ryanair Rules at SOF

Ryanair serves Sofia from several European cities. Standard fares include one small personal bag (40 × 20 × 25 cm) in the cabin for free. A larger cabin bag (55 × 40 × 20 cm, 10 kg) requires Priority boarding or a fare bundle. Without Priority, your large bag will be taken at the gate and placed in the hold — free but not in the cabin.

Bulgaria Air: Simpler Rules

Bulgaria Air, the national carrier, operates with a conventional full-service cabin bag allowance: one bag up to 55 × 40 × 20 cm weighing no more than 10 kg, no add-ons required. Fares are generally higher than Wizz Air and Ryanair, but the bag policy removes the guesswork.

What to Pack for Sofia

Clothing by season:

Summer (June–August): Light clothes for hot days (30–35°C in the city), a packable layer for Vitosha Mountain where it is 5–8°C cooler
Winter (December–February): Cold and occasionally snowy — pack a warm coat, thermals, and waterproof boots; wear them on the plane
Spring/Autumn: A waterproof jacket and mid-layers work well

Packing list additions:

Comfortable walking shoes — Sofia's centre has mix of paved streets and uneven pavements
Type C/F European power adapter
Small cash float in BGN for markets, public transport, and smaller cafes
A daypack for the Rila Monastery trip or Vitosha hike — pack it flat inside your main bag

Getting from SOF to the City Centre

The metro is the fastest and cheapest route. Line M2 (blue line) connects the airport to Serdika and Obelya stations in central Sofia in about 20 minutes. Tickets are inexpensive and machines at the airport accept cards.

Bus line 84 runs less frequently but covers the same route. Official airport taxis charge a metered fare — insist on the meter. App-based services (Bolt) are reliable and transparent on pricing.

Alexander Nevsky Cathedral and City Highlights

The Alexander Nevsky Cathedral is one of the largest Orthodox cathedrals in the world and is free to enter. The surrounding square hosts an antiques and art market at weekends. The Roman Serdica ruins are visible through glass panels in the metro station beneath the NDK cultural centre. The city centre is compact and very walkable.

Two-Country Combo: Sofia to Bucharest

Bus routes connect Sofia to Bucharest in roughly 7 hours, making a two-capital Balkan trip viable on carry-on only. Cross-border buses depart from Sofia's central bus station. Both Bulgaria and Romania are EU members, so no additional documentation is required for EU/EEA passport holders beyond standard travel ID.

Bottom Line

Buy Wizz Air Priority when you book — it is the single action that makes carry-on travel to Sofia straightforward. With a 10 kg overhead allowance secured, you can pack comfortably for a week in Bulgaria including day trips to Rila Monastery and a Vitosha hike.