The data is a little old, but gives an indication of what the airport routes team are aiming at.
Short Haul
*Gdansk - Indirect traffic from MAN in 2011 to GDN was 5,000. Leakage from the MAN catchment was 81,000 (CAA 2011).
*Kaunas - Leakage from the MAN catchment was 46,000 (CAA 2011).
*Nuremberg - Indirect traffic from MAN in 2011 to NUE was 13,541 (MIDT 2011). Leakage from the MAN catchment was 4,000 (CAA 2011).
*Poznan - Indirect traffic from MAN in 2011 to POZ was 2,014. Leakage from the MAN catchment was 50,000 (CAA 2011).
*Riga - Indirect traffic from MAN in 2011 to RIX was 3,000. Leakage from the MAN catchment was 70,000 (CAA 2011).
*Vienna - Indirect traffic from MAN in 2011 to VIE was 34,493 (MIDT 2011). Leakage from the MAN catchment was 44,000 (CAA 2011).
*Vilnius - Indirect traffic from MAN in 2011 to VNO was 4,500. Leakage from the MAN catchment was 3,000 (CAA 2011).
*Wroclaw
Long Haul
*Guangzhou - Indirect traffic from MAN in 2011 to CAN was 18,637 (MIDT 2011). Leakage from the MAN catchment to London airports was zero as no direct services operated in 2011.
*Houston - Indirect traffic from MAN in 2011 to IAH was 16,000 (MIDT 2011). Leakage from the MAN catchment to London airports was 40,000 (CAA 2011).
*San Francisco - Indirect traffic from MAN in 2011 to SFO was 35,000 (MIDT 2011). Leakage from the MAN catchment to London airports was 45,000 (CAA 2011).
*Shanghai - Indirect traffic from MAN in 2011 to PVG was 47,000 (MIDT 2011). Leakage from the MAN catchment to London airports was 28,000 (CAA 2011).
Manchester Airport (MAN) | Unserved Routes in the Route Shop