is there a flight from belfast?

Answer 1

Yes, Belfast has an airport. Where do you want to go to? Not enough info.

Answer 2

Here's a list of airlines serving Belfast International Airport and routes served:

Air Transat (TS) to Toronto (YTO)
Bmibaby (WW) to Birmingham (BHX), Cardiff (CWL), Manchester (MAN) and Nottingham (NWT)
Continental Airlines (CO) to New York (NYC)
Easyjet (U2) to Alicante (ALC), Amsterdam (AMS), Berlin (BER), Bristol (BRS), Edinburgh (EDI), Faro (FAO), Gasgow (GLA), Inverness (INV), Liverpool (LPL), London (LON), Malaga (AGP), Newcastle (NCL), Nice (NCE), Palma Mallorca (PMI), Paris (PAR) and Rome (ROM)
Easyjet Switzerland (DS) to Geneva (GVA)
Jet2.com (LS) to Barcelona (BCN), Blackpool (BLK), Leeds Bradford (LBA), Murcia (MJV), Pisa (PSA) and Prague (PRG)
Kibris Turkish Airlines (YK) to Antalya (AYT)
Zoom Airlines (Z4) to Toronto (YTO) and Vancouver (YVR)

From Belfast George Best City Airport, you can take these airlines:

Aer Arann (RE) to Cork (ORK)
Air Berlin (AB) to London (LON)
Bmi british midland (BD) to London (LON)
British Airways (BA) to Birmingham (BHX) and Manchester (MAN)
EuroManx (3W) to Isle of Man (IOM)
Flybe British European (BE) to Aberdeen (ABZ), Birmingham (BHX), Bristol (BRS), Edinburgh (EDI), Exeter (EXT), Glasgow (GLA), Guernsey (GCI), Jersey (JER), Leeds Bradford (LBA), Liverpool (LPL), London (LON), Manchester (MAN), Newcastle (NCL) and Southampton (SOU)

Answer 3

lots - look at zoom airlines and airtransat