Most popular routes from Barcelona Airport
1 Flag of the Netherlands.svg Amsterdam, Netherlands 491,979 EasyJet, KLM, Transavia.com, Vueling
2 Flag of France.svg Paris-Charles de Gaulle, France 409,068 Air France, EasyJet
3 Flag of France.svg Paris-Orly, France 324,380 Brit Air, Vueling
4 Flag of the United Kingdom.svg London-Heathrow, United Kingdom 288,048 British Airways
5 Flag of the United Kingdom.svg London-Gatwick, United Kingdom 284,399 Easyjet, Monarch
6 Flag of Italy.svg Rome-Fiumicino, Italy 283,281 Alitalia, Vueling
7 Flag of Germany.svg Frankfurt, Germany 258,936 Lufthansa
8 Flag of Germany.svg Munich, Germany 253,608 Lufthansa
9 Flag of Italy.svg Milan-Malpensa, Italy 251,873 Vueling, EasyJet
10 Flag of Portugal.svg Lisbon, Portugal 234,605 EasyJet, Portugália, TAP Portugal, Vueling
11 Flag of Switzerland.svg Zurich, Switzerland 222,030 Swiss International Airlines, Vueling
12 Flag of Switzerland.svg Geneva, Switzerland 210,842 Swiss International Airlines, Easyjet Switzerland
13 Flag of Belgium.svg Brussels-National, Belgium 197,852 Brussels Airlines, Vueling
14 Flag of Austria.svg Vienna, Austria 153,303 Austrian Airlines, Vueling, Niki
Busiest International Routes from Barcelona Airport
1 Flag of the United States.svg New York-JFK, United States 105,019 Delta Air Lines, American Airlines
2 Flag of Israel.svg Tel Aviv, Israel 103,687 Vueling, Sun d'Or International Airlines, Arkia Israel Airlines, Air Europa, El Al Israeli Airlines
3 Flag of Qatar.svg Doha, Qatar 66,331 Qatar Airways
4 Flag of the United States.svg Atlanta, United States 51,380 Delta Airlines
5 Flag of Morocco.svg Casablanca, Morocco 51,038 Royal Air Maroc, Jet4you, Air Arabia Maroc
6 Flag of Algeria.svg Algiers Houari Boumedien, Algiers 39,484 Air Algerie
7 Flag of Brazil.svg São Paulo-Guarulhos, Brazil 38,831 Singapore Airlines, Iberia
8 Flag of the United States.svg Newark, United States 38,217 United Airlines
9 Flag of Argentina.svg Buenos Aires-Ezeiza, Argentina 36,705 Aerolíneas Argentinas
10 Flag of Colombia.svg Bogota, Colombia 36,227 Avianca
11 Flag of Singapore.svg Singapore 26,012 Singapore Airlines
12 Flag of Morocco.svg Tangier, Morocco 34,759 Air Arabia Maroc, Royal Air Maroc, Jet4you
13 Flag of the United States.svg Miami, United States 27,918 American Airlines
14 Flag of the United States.svg Philadelphia, United States 26,528 US Airways
Where do these airlines fly to? Numbers mean which terminal
Adria Airways Seasonal: Ljubljana 1
Aegean Airlines Athens 1
Aer Lingus Dublin
Seasonal: Belfast-International, Cork 1
Aeroflot Moscow-Sheretmetyevo 1
Aerolineas Argentinas Buenos Aires-Ezeiza 2
Air Algerie Algiers, Oran 2
Air Arabia Maroc Casablanca, Nador, Tangier 2
Air Baltic Riga 1
Air Berlin Berlin-Tegel, Dusseldorf, Hamburg, Palma de Mallorca, Sttutgart 1
Air Canada Seasonal: Montreal-Trudeau, Toronto-Pearson 2
Air Europa Arrecife, Ibiza, Madrid, Minorca, Palma de Mallorca, Tenerife-North
Seasonal: Bari, Copenhagen, Fuerteventura, Tel Aviv-Ben Gurion 1
Air France Paris-Charles de Gaulle
Seasonal: Marseille 1
Air France operated by Brit Air Lyon, Paris-Orly 1
Air France operated by Régional Bordeaux 1
Air Transat Seasonal: Montréal-Trudeau, Toronto-Pearson 2
Alitalia Milan-Linate, Rome-Fiumicino 1
Alitalia operated by Air One Venice-Marco Polo 1
Alitalia operated by Alitalia CityLiner Rome-Fiumicino 1
Alitalia operated by Alitalia Express Milan-Linate 1
American Airlines Miami, New York-JFK 1
Arkia Israel Airlines Tel Aviv-Ben Gurion 1
Armavia Seasonal: Yerevan 2
Atlantic Airways Seasonal: Vágar 2
Austrian operated by Tyrolean Airways Vienna 1
Avianca Bogotá 1
Bmibaby Seasonal: Birmingham, Nottingham/East Midlands 1
British Airways London-Gatwick [resumes 23 February 2013][10], London-Heathrow 1
British Airways
operated by BA CityFlyer London-City 1
Brussels Airlines Brussels 1
Croatia Airlines Seasonal: Rijeka [begins 18 July 2012], Zagreb 1
Czech Airlines Prague 1
Delta Air Lines New York-JFK
Seasonal: Atlanta[11] 1
EasyJet Amsterdam, Belfast-International, Berlin-Schönefeld, Bristol, Dortmund, Lisbon, Liverpool, London-Gatwick, London-Luton, London-Southend, London-Stansted, Lyon, Milan-Malpensa, Newcastle upon Tyne, Nice, Paris-Charles de Gaulle 2
EasyJet Switzerland Basel/Mulhouse, Geneva 2
Egyptair Cairo 1
El Al Tel Aviv-Ben Gurion 1
Emirates Dubai 1
Europe Airpost Charter: Paris-Orly 2
Finnair Helsinki 1
Freebird Airlines Seasonal Charter: Istanbul-Ataturk 1
Germanwings Cologne/Bonn, Hanover, Stuttgart 2
Helitt Líneas Aéreas Badajoz, Málaga, Melilla 1
Iberia Madrid, São Paulo-Guarulhos 1
Iberia Regional
operated by Air Nostrum Almería, Bologna, Burgos, León, Marseille, Nantes, Nice, Salamanca, San Sebastián, Santander, Tangier, Valencia [begins 3 September 2012], Valladolid
Seasonal: Catania, Corfu, Melilla [begins 21 July 2012], Olbia [begins 20 July 2012] 1
Icelandair Seasonal: Reykjavik-Keflavík 2
Iceland Express operated by Holidays Czech Airlines Seasonal: Reykjavik-Keflavík 2
Israir Airlines Seasonal: Tel Aviv-Ben Gurion 1
I-Fly Seasonal: Moscow-Vnukovo 2
Jet2.com Glasgow-International, Leeds/Bradford, Manchester 2
Jetairfly Nador, Tangier 2
KLM Amsterdam 1
Kogalymavia Seasonal: Moscow-Domodedovo 2
LOT Polish Airlines Warsaw-Chopin 1
Lufthansa Berlin-Tegel, Düsseldorf, Frankfurt, Munich 1
Luxair Luxembourg 2
Monarch London-Gatwick, Manchester
Seasonal: Birmingham [begins 21 July 2012] 2
Niki Vienna 1
Nordwind Airlines Seasonal: Moscow, Novosibirsk, Irkutsk, Krasnoyarsk, Khabarovsk, Kemerovo 2
Norwegian Air Shuttle Bergen, Copenhagen, Gothenburg-Landvetter, Helsinki, Oslo-Gardermoen, Stockholm-Arlanda 2
OLT Express Łódź [begins 3 November 2012]
Onur Air Seasonal: Istanbul-Atatürk 1
Orbest Orizonia Airlines Seasonal: Arrecife, Cancun, Fuerteventura, Punta Cana 1
Pakistan International Airlines Islamabad, Karachi, Lahore 2
Qatar Airways Doha 1
Rossiya St Petersburg 2
Royal Air Maroc Casablanca, Tangier 1
Royal Jordanian Amman-Queen Alia 1
Ryanair Arrecife, Alicante, Asturias, Beauvais-Tillé, Bilbao, Birmingham [begins 7 November 2012], Brussels-Charleroi, Budapest, Dublin, Edinburgh, Fuerteventura, Glasgow-Prestwick, Ibiza, Jerez de la Frontera, Las Palmas de Gran Canaria, Lubeck, Leeds/Bradford, Liverpool, London-Stansted, Málaga, Memmingen, Milan-Orio al Serio, Minorca, Nottingham/East Midlands, Oslo-Rygge, Palma de Mallorca, Porto, Poznań, Rome-Ciampino, Santander, Santiago de Compostela, Seville, Stockholm-Skavsta, Tenerife-South, Treviso, Trieste, Valladolid, Vilnius, Warsaw-Modlin [begins 3 September 2012] 2
Scandinavian Airlines Copenhagen, Oslo-Gardermoen
Seasonal: Bergen [begins 28 June 2012], Stavanger [begins 28 June 2012], Stockholm-Arlanda, Trondheim [begins 2 July 2012] 1
Singapore Airlines São Paulo-Guarulhos, Singapore 1
Smart Wings Prague 2
Sky Work Airlines Berne 2
Sun d'Or operated by El Al Tel Aviv-Ben Gurion 1
Sunwing Airlines Seasonal: Toronto-Pearson 2
Swiss International Air Lines Geneva, Zürich 1
Swiss International Air Lines
operated by Swiss European Air Lines Basel/Mulhouse 1
TACV Seasonal: Sal 2
TAP Portugal Lisbon
Seasonal: Funchal [resumes 3 July 2012] 1
TAP Portugal
operated by Portugália Lisbon, Porto 1
TAROM Bucharest-Henri Coandă 1
Tatarstan Airlines Seasonal: Kazan, Moscow-Domodedovo 2
Transaero Airlines Moscow-Domodedovo
Seasonal: Novosibirsk, St Petersburg 2
Transavia Amsterdam, Eindhoven, Rotterdam 2
Tunisair Tunis 1
Turkish Airlines Istanbul-Atatürk 1
Ukraine International Airlines Kiev-Boryspil 1
Ural Airlines Yekaterinburg
Seasonal: Mineralnye Vody 2
United Airlines Newark 1
US Airways Seasonal: Philadelphia 1
VIM Airlines Seasonal: Moscow-Domodedovo 2
Vladivostok Air Charter: Moscow-Vnukovo 2
Vueling Airlines A Coruña, Alicante, Almeria, Amsterdam, Arrecife, Asturias, Athens, Berlin-Tegel, Bilbao, Bordeaux, Brest, Brussels, Cardiff, Copenhagen, Edinburgh, Florence, Genoa, Granada, Hamburg, Ibiza, Las Palmas de Gran Canaria, Lille, Lisbon, Lyon, Madrid, Málaga, Malta, Marrakech, Marseille, Milan-Malpensa, Minorca, Moscow-Domodedovo, Munich, Nantes, Naples, Nice, Nuremberg, Palermo, Palma de Mallorca, Paris-Orly, Pisa, Prague, Rome-Fiumicino, San Sebastian, Santander, Santiago de Compostela, Seville, Stockholm-Arlanda, Strasbourg, Tenerife-North, Toulouse, Venice-Marco Polo, Vienna, Vigo, Zürich
Seasonal: Aalborg, Cardiff, Dubrovnik, Groningen, Heraklion, Lourdes, Mykonos, Santorini, Southampton, Split, Stavanger, Tel Aviv-Ben Gurion, Tenerife-South, Verona, Zagreb 1
Wind Jet Seasonal: Catania 2
Wizz Air Bucharest-Henri Coanda, Budapest, Cluj-Napoca, Gdańsk, Katowice, Poznań, Prague, Sofia, Târgu Mureş, Timisoara, Vilnius, Warsaw-Chopin [ends 17 July 2012], Warsaw-Modlin [begins 19 July 2012] 2
This information came from Wikipedia 2012
Airlines flying in and out of Barcelona el Prat International Airport