Bilbao Airport BIO to Sofia SOF Flights

Since both Bilbao Airport (BIO) and Sofia are in the Schengen Area, a passport is not required for European Union (EU) or Schengen-associated country citizens. A national ID card is sufficient.

There is a time difference of 1 h between Bilbao Airport (BIO) and Sofia all year round.

The best events to attend in Sofia include:

• Sofia International Film Festival, a prominent film festival showcasing international and Bulgarian cinema
• Sofia Music Weeks, an annual classical music festival featuring renowned orchestras and soloists
• Sofia Pride, a celebration of LGBTQ+ rights with a colorful parade and various events
• Christmas Market in Sofia, a festive market offering traditional crafts, food, and holiday entertainment.

The best holidays to experience in Sofia include:

• Easter, beautiful spring weather and traditional celebrations
• Labor Day, a public holiday with various outdoor activities and gatherings
• National Revival Day, cultural events celebrating Bulgarian heritage
• Unification Day, commemorating the unification of Bulgaria with festivities and parades.

The best seasons to visit Sofia are Spring or Fall. The best weather to explore Sofia is during May-June or September-October.

For international flights we recommend to arrive 2.5 to 3 hours before departure. Please check the website of your departure airport if in doubt. Some airports may offer booking time slots for security checks or offer additional information on when to get there based on time of day.

Most airlines permit carry-on bags that fit within specific dimensions (e. G. 22 x 14 x 9 inches or 56 x 36 x 23 cm), including handles and wheels. Bags must fit in the overhead bin or under the seat in front of you.

Many airlines impose weight limits, commonly ranging between 7 kg (15 lbs) and 12 kg (26 lbs).
Typically, passengers are allowed one carry-on bag and one personal item (for example a purse, laptop bag, or backpack). Personal items must fit under the seat in front of you.
Budget Airlines (like Ryanair or Wizz Air) have stricter size and weight limits, often requiring fees for larger carry-ons. Full-Service Airlines have more lenient policies, sometimes including more spacious dimensions or higher weight limits depending on your ticket class.

The list of items prohibited on an airplane varies by country and airline, but in general, the following items are not allowed in carry-on or checked baggage: Weapons and self-defence items, sharp objects, flammable materials, explosives, toxic substances, or liquids over 100ml (except for medications and baby essentials). In checked baggage, firearms (without authorization), explosives, large lithium batteries, and hazardous chemicals are prohibited. Electronic cigarettes must be in carry-on bags, while alcohol and dry ice have restrictions. Always check with your airline for specific regulations.