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Cheap Flights from Bilbao (BIO) to Sofia (SOF)

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      Compare Bilbao to Sofia flight deals

      Find the cheapest month or even day of the year to fly to Sofia

      Book the best Sofia fare with no extra fees

      Flight deals from Bilbao to Sofia

      Looking for a cheap last-minute deal or the best round-trip flight from Bilbao to Sofia? Find the lowest prices on one-way and round-trip tickets right here.
      Sofia.$43 per passenger.Departing Thu, Sep 25.One-way flight with Vueling Airlines.Outbound indirect flight with Vueling Airlines, departing from Bilbao on Thu, Sep 25, arriving in Sofia.Price includes taxes and charges.From $43, select.
      Sofia.$77 per passenger.Departing Thu, Aug 28.One-way flight with Vueling Airlines.Outbound indirect flight with Vueling Airlines, departing from Bilbao on Thu, Aug 28, arriving in Sofia.Price includes taxes and charges.From $77, select.
      Sofia.$81 per passenger.Departing Fri, Mar 13.One-way flight with Wizz Air Malta.Outbound indirect flight with Wizz Air Malta, departing from Bilbao on Fri, Mar 13, arriving in Sofia.Price includes taxes and charges.From $81, select.
      Sofia.$84 per passenger.Departing Fri, Oct 17.One-way flight with Vueling Airlines.Outbound indirect flight with Vueling Airlines, departing from Bilbao on Fri, Oct 17, arriving in Sofia.Price includes taxes and charges.From $84, select.
      Sofia.$89 per passenger.Departing Sat, Feb 7.One-way flight with Vueling Airlines.Outbound indirect flight with Vueling Airlines, departing from Bilbao on Sat, Feb 7, arriving in Sofia.Price includes taxes and charges.From $89, select.
      Sofia.$123 per passenger.Departing Wed, Dec 31.One-way flight with Vueling Airlines.Outbound indirect flight with Vueling Airlines, departing from Bilbao on Wed, Dec 31, arriving in Sofia.Price includes taxes and charges.From $123, select.
      Sofia.$127 per passenger.Departing Wed, Jul 16.One-way flight with Wizz Air Malta.Outbound indirect flight with Wizz Air Malta, departing from Bilbao on Wed, Jul 16, arriving in Sofia.Price includes taxes and charges.From $127, select.
      Sofia.$205 per passenger.Departing Fri, May 8.One-way flight with Iberia.Outbound indirect flight with Iberia, departing from Bilbao on Fri, May 8, arriving in Sofia.Price includes taxes and charges.From $205, select.

      Find the cheapest month to fly from Bilbao to Sofia

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Bilbao to Sofia flights are currently cheapest in September.
      Jul
      from $127
      Aug
      from $77
      Sep
      from $43
      Oct
      from $84
      Nov
      Find prices
      Dec
      from $123
      Jan
      Find prices
      Feb
      from $89
      Mar
      from $81
      Apr
      Find prices
      May
      from $205
      Jun
      Find prices

      Bilbao to Sofia: Alternative routes

      Compare routes from Bilbao to Sofia below. You may find an airport to fly into that's cheaper, faster, or easier than Sofia.

      Bilbao to Sofia: Flight information

      The things to know before you go.
      Cheapest flight found$43
      Cheapest month to flySeptember

      Finding cheap flights from Bilbao to Sofia: Frequently asked questions

      The best price we found for a round-trip flight from Bilbao to Sofia is $102. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      Currently, there are no airlines that fly direct from Bilbao to Sofia. But we found flights with one or more stops from $102.
      There are no flights flying from Bilbao to Sofia, as of July 2025.
      The cheapest month to fly from Bilbao to Sofia is usually October.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Bilbao Airport to Sofia Airport on Wednesday, October 1, 2025.
      No airlines currently offer direct flights between Bilbao Airport and Sofia Airport. Most routes have one or more stops.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Sofia but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
      We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Sofia is around 40 days in advance, so don’t leave your flight to the last minute.
      Currently, Vueling Airlines offers the cheapest flight tickets to Sofia.

      Traveling from Bilbao Airport (BIO) to Sofia Airport (SOF): what you need to know

      • Sofia's timezone is UTC+2, making Sofia one hour ahead of Bilbao.

      • Your BIO to SOF flight won't wait if you're running late, so get to the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead for international travel.

      • During popular months like July, it's a good idea to get to the airport earlier. Arrive two hours before a domestic departure and four hours ahead of international flights when you fly during a high season in general.

      • Think about adding a stopover when booking your ticket from Bilbao Airport to Sofia Airport. Just deselect 'Direct flights only' to break up your trip, or visit a new city along the way. Here's where you can stop between BIO and SOF:

        • Valencia Airport

        • Frankfurt Airport

        • Charles de Gaulle Airport

      How to find the cheapest flights from Bilbao Airport (BIO) to Sofia Airport (SOF)

      • At the moment, $43 is the cheapest price we've found for a one-way Bilbao Airport to Sofia Airport flight. The best price for a return ticket is $102. Bear in mind that fares may change due to availability when booking.

      • Don't leave things to the last moment. You're more likely to find cheap tickets from BIO to SOF if you book in advance. Airlines often have some terrific early bird rates.

      • The 'Whole month' tool shows you the cheapest flights from Bilbao Airport to Sofia Airport across the month. It's an easy way to find a bargain if your travel dates are flexible.

      • Picking up cheap flights from BIO to SOF is easy with Price Alerts. Simply set up one of these automatic alerts and we'll notify you as soon as there's a better deal.

      • Pick your ideal departure and arrival times, airlines and number of stops with the filters. Alternatively, sort your results by 'Cheapest' to find the best deals on flights from Bilbao Airport to Sofia Airport.

      Handy information about Bilbao Airport (BIO)

      • Bilbao Airport scores top marks for its on-time performance. 82.76% of flights that depart BIO land on time.

      • To get to Bilbao Airport from central Bilbao, it'll take around 10 minutes if you're going by car. Of course, this depends on traffic. It's approximately 4 miles from the airport to the city center.

      • You can expect a journey time of around 30 minutes on public transport.

      • Have an early flight from Bilbao Airport to Sofia Airport? Avoid the last-minute rush to the terminal (and get some extra shut-eye) by choosing one of these hotels close to BIO:

      Arriving at Sofia Airport (SOF)

      • The last thing you want is a long trip to your hotel if you're getting in late on a Bilbao Airport to Sofia Airport flight. Stay at one of these accommodation options near SOF instead:

      • Get on the fast track to adventure by picking up a Sofia Airport rental car. Grab your wheels from MEX, Surprice or NU Car Rentals and explore beyond Sofia's usual tourist stops.

      • Booking your ride from Sofia Airport about one week ahead gives you the best shot at securing a great deal.

      Getting from Sofia Airport (SOF) to central Sofia

      • Sofia Airport is approximately 7 miles from the center of Sofia. The drive time takes about 15 minutes.

      • Traveling on public transport takes roughly 35 minutes.

      When to fly to Sofia Airport (SOF)

      • The quietest month for a flight from Bilbao Airport to Sofia Airport is April, while August is the busiest. Choose the ideal time to go to Sofia based on whether you prefer a laid-back vibe or a more bustling atmosphere.

      • The warmest month in Sofia is August, with temperatures ranging between 57ºF and 86ºF. Lock in your flights from Bilbao Airport to Sofia Airport in this month if this is the type of weather you enjoy.

      • If you like cooler conditions, search for a cheap ticket from BIO to SOF in January. Temperatures average between 12ºF and 45ºF then.

      Explore more of Bulgaria

      • Sofia has its own special appeal, but there are so many other parts of Bulgaria just waiting to be discovered. Around 80 miles south-east of Sofia, a visit to Plovdiv will keep you on the go. Start with attractions like Plovdiv Old Town, Plovdiv Roman Theatre and Archaelogical Complex Nebet Tepe.

      • If you want to check out another major stop in Bulgaria, consider Varna, about 240 miles east of Sofia. Park Asparuhovo - Asparuhovo sea garden, Dormition of theotokos Cathedral and Sunset viewpoint (място за гледане на Залеза) are highlights.

      Plan the rest of your trip from Bilbao to Sofia

      Prices shown on this page are estimated lowest prices only. Found in the last 45 days.