What constitutes hand luggage? That depends on the airline. I've collated some of the information;
Airline Width Height Depth Linear Weight Width Height Depth Linear Weight
Aer Lingus 22'' 18'' 10'' 50'' 13.00 lbs 56 cm 46 cm 25 cm 127 cm 5.90 kgs
AeroMexico 22'' 14'' 9'' 46'' 22.00 lbs 56 cm 36 cm 23 cm 117 cm 9.98 kgs
Air Canada 22'' 16'' 9'' 46'' 22.00 lbs 55 cm 39 cm 23 cm 117 cm 9.98 kgs
Air France 22'' 14'' 10'' 46'' 26.00 lbs 56 cm 36 cm 25 cm 117 cm 11.79 kgs
Air India 22'' 16'' 8'' 46'' 18.00 lbs 56 cm 41 cm 20 cm 117 cm 8.16 kgs
Air New Zealand 22'' 15'' 8'' 45'' 15.00 lbs 56 cm 38 cm 20 cm 114 cm 6.80 kgs
Air Tahiti Nui 22'' 15'' 8'' 45'' 22.00 lbs 56 cm 38 cm 20 cm 114 cm 9.98 kgs
AirTran n/a n/a n/a 55'' n/a n/a n/a n/a 140 cm n/a
Alaska 24'' 17'' 10'' 51'' n/a 61 cm 43 cm 25 cm 130 cm n/a
Alitalia 18'' 14'' 10'' 42'' 11.00 lbs 46 cm 36 cm 25 cm 107 cm 4.99 kgs
All Nippon/ANA 22'' 15'' 8'' 45'' 22.00 lbs 56 cm 38 cm 20 cm 114 cm 9.98 kgs
Allegiant Air 22'' 14'' 9'' 45'' n/a 56 cm 36 cm 23 cm 114 cm n/a
American 22'' 14'' 9'' 45'' 40.00 lbs 56 cm 36 cm 23 cm 114 cm 18.14 kgs
Asiana 22'' 15'' 8'' 45'' 22.00 lbs 56 cm 38 cm 20 cm 114 cm 9.98 kgs
British Airways 22'' 16'' 8'' 46'' 26.00 lbs 56 cm 41 cm 20 cm 117 cm 11.79 kgs
British Midland/BMI 22'' 18'' 10'' 50'' n/a 56 cm 46 cm 25 cm 127 cm n/a
Cathay Pacific 22'' 14'' 9'' 45'' 15.00 lbs 56 cm 36 cm 23 cm 114 cm 6.80 kgs
China Airlines 22'' 14'' 9'' 45'' 15.00 lbs 56 cm 36 cm 23 cm 114 cm 6.80 kgs
Continental 22'' 14'' 9'' 45'' 40.00 lbs 56 cm 36 cm 23 cm 114 cm 18.14 kgs
Delta 22'' 14'' 9'' 45'' 40.00 lbs 56 cm 36 cm 23 cm 114 cm 18.14 kgs
EasyJet 22'' 16'' 8'' 46'' n/a 56 cm 41 cm 20 cm 117 cm n/a
El Al 22'' 18'' 10'' 50'' 17.00 lbs 56 cm 46 cm 25 cm 127 cm 7.71 kgs
Emirates 22'' 15'' 8'' 45'' 15.00 lbs 56 cm 38 cm 20 cm 114 cm 6.80 kgs
Etihad 22'' 15'' 8'' 45'' 15.00 lbs 56 cm 38 cm 20 cm 114 cm 6.80 kgs
Eva Air 22'' 15'' 8'' 45'' 22.00 lbs 56 cm 38 cm 20 cm 114 cm 9.98 kgs
Finnair 22'' 18'' 10'' 50'' 22.00 lbs 56 cm 46 cm 25 cm 127 cm 9.98 kgs
Gulf Air 17'' 15'' 12'' 44'' 19.75 lbs 43 cm 38 cm 30 cm 112 cm 8.96 kgs
Hainan Airlines 22'' 15'' 8'' 45'' 22.00 lbs 56 cm 38 cm 20 cm 114 cm 9.98 kgs
Hawaiian 22'' 14'' 9'' 45'' 25.00 lbs 56 cm 36 cm 23 cm 114 cm 11.34 kgs
Iberia 18'' 14'' 10'' 42'' 22.00 lbs 46 cm 36 cm 25 cm 107 cm 9.98 kgs
IndoGo 22'' 15'' 8'' 45'' 18.00 lbs 56 cm 38 cm 20 cm 114 cm 8.16 kgs
Japan Airlines/JAL 22'' 16'' 10'' 48'' 22.00 lbs 56 cm 41 cm 25 cm 122 cm 9.98 kgs
Jet Airways 22'' 15'' 8'' 45'' 15.00 lbs 56 cm 38 cm 20 cm 114 cm 6.80 kgs
JetBlue - Airbus 26'' 18'' 12'' 56'' n/a 66 cm 46 cm 30 cm 142 cm n/a
JetBlue - Embraer 24'' 16'' 10'' 50'' n/a 61 cm 41 cm 25 cm 127 cm n/a
JetStar 22'' 14'' 9'' 45'' 22.00 lbs 56 cm 36 cm 23 cm 114 cm 9.98 kgs
Kenya Airways 20'' 15'' 9'' 44'' 22.00 lbs 51 cm 38 cm 23 cm 112 cm 9.98 kgs
Kingfisher 22'' 15'' 8'' 45'' 15.00 lbs 56 cm 38 cm 20 cm 114 cm 6.80 kgs
KLM 22'' 14'' 10'' 46'' 26.00 lbs 56 cm 36 cm 25 cm 117 cm 11.79 kgs
Korean Air 22'' 14'' 9'' 45'' 25.00 lbs 56 cm 36 cm 23 cm 114 cm 11.34 kgs
LAN 22'' 14'' 10'' 46'' 18.00 lbs 56 cm 36 cm 25 cm 117 cm 8.16 kgs
Lufthansa 22'' 16'' 8'' 46'' 18.00 lbs 56 cm 41 cm 20 cm 117 cm 8.16 kgs
Malaysia Airlines 22'' 15'' 8'' 45'' 11.00 lbs 56 cm 38 cm 20 cm 114 cm 4.99 kgs
Mexicana 20'' 15'' 9'' 44'' 51.00 lbs 51 cm 38 cm 23 cm 112 cm 23.13 kgs
Middle East Airlines/MEA 22'' 18'' 10'' 50'' 17.50 lbs 56 cm 46 cm 25 cm 127 cm 7.94 kgs
OpenSkies 18'' 12'' 10'' 40'' 51.00 lbs 46 cm 30 cm 25 cm 102 cm 23.13 kgs
Philippine Airlines 22'' 15'' 8'' 45'' 15.00 lbs 56 cm 38 cm 20 cm 114 cm 6.80 kgs
Porter 22'' 16'' 10'' 48'' 20.00 lbs 56 cm 41 cm 25 cm 122 cm 9.07 kgs
Qantas 22'' 14'' 9'' 45'' 15.00 lbs 56 cm 36 cm 23 cm 114 cm 6.80 kgs
Qatar 20'' 15'' 10'' 44'' 33.00 lbs 50 cm 37 cm 25 cm 112 cm 14.97 kgs
Royal Jordanian 22'' 14'' 9'' 45'' 15.00 lbs 56 cm 36 cm 23 cm 114 cm 6.80 kgs
Ryanair 22'' 14'' 9'' 45'' 22.00 lbs 56 cm 36 cm 23 cm 114 cm 9.98 kgs
SAS 22'' 18'' 9'' 49'' 17.50 lbs 56 cm 46 cm 23 cm 124 cm 7.94 kgs
Singapore/SIA 22'' 14'' 9'' 45'' 15.00 lbs 56 cm 36 cm 23 cm 114 cm 6.80 kgs
South African Airways 22'' 15'' 8'' 45'' 18.00 lbs 56 cm 38 cm 20 cm 114 cm 8.16 kgs
Southwest 24'' 16'' 10'' 50'' n/a 61 cm 41 cm 25 cm 127 cm n/a
SpiceJet 22'' 15'' 8'' 45'' 22.00 lbs 56 cm 38 cm 20 cm 114 cm 9.98 kgs
SWISS 22'' 16'' 8'' 46'' 18.00 lbs 56 cm 41 cm 20 cm 117 cm 8.16 kgs
TACA 22'' 14'' 9'' 45'' 22.00 lbs 56 cm 36 cm 23 cm 114 cm 9.98 kgs
TAM 22'' 16'' 8'' 45'' 11.00 lbs 55 cm 40 cm 20 cm 115 cm 4.99 kgs
Thai 22'' 15'' 8'' 45'' 15.00 lbs 56 cm 38 cm 20 cm 114 cm 6.80 kgs
United 22'' 14'' 9'' 45'' n/a 56 cm 36 cm 23 cm 114 cm n/a
US Airways 22'' 14'' 9'' 45'' 40.00 lbs 56 cm 36 cm 23 cm 114 cm 18.14 kgs
V Australia 22'' 14'' 9'' 45'' 15.00 lbs 56 cm 36 cm 23 cm 114 cm 6.80 kgs
Virgin America 24'' 16'' 10'' 50'' 16.00 lbs 61 cm 41 cm 25 cm 127 cm 7.26 kgs
Virgin Atlantic 22'' 14'' 9'' 45'' 13.00 lbs 56 cm 36 cm 23 cm 114 cm 5.90 kgs
Virgin Blue 19'' 13'' 9'' 41'' 15.00 lbs 48 cm 33 cm 23 cm 104 cm 6.80 kgs
WestJet 22'' 16'' 9'' 46'' 22.00 lbs 55 cm 39 cm 23 cm 117 cm 9.98 kgs
Manufacturer Model Width Depth Height Weight
Lowepro Fastpack 100 22.0 cm 18.5 cm 41.0 cm 0.76 kgs
Lowepro Fastpack 200 31.5 cm 20.5 cm 46.0 cm 1.24 kgs
Lowepro Fastpack 250 31.5 cm 24.0 cm 46.0 cm 1.64 kgs
Lowepro Fastpack 350 31.5 cm 24.5 cm 49.0 cm 1.85 kgs
Lowepro Flipside 200 21.8 cm 15.7 cm 42.0 cm 1.00 kgs
Lowepro Flipside 300 25.8 cm 17.4 cm 44.5 cm 1.20 kgs
Lowepro Flipside 400 AW 30.3 cm 25.3 cm 46.0 cm 1.60 kgs
Lowepro LensTrekker 600 AW II 28.0 cm 32.0 cm 65.5 cm 2.80 kgs
Lowepro Micro Trekker 100 26.5 cm 20.5 cm 29.0 cm 0.79 kgs
Lowepro Micro Trekker 200 28.0 cm 21.5 cm 35.5 cm 1.05 kgs
Lowepro Mini Trekker AW 30.5 cm 32.0 cm 40.5 cm 1.16 kgs
Lowepro Nature Trekker AW II 37.0 cm 38.0 cm 48.5 cm 2.90 kgs
Lowepro Orion Mini 24.0 cm 21.5 cm 17.5 cm 0.45 kgs
Lowepro Orion AW 37.0 cm 24.0 cm 54.0 cm 1.70 kgs
Lowepro Photo Trekker AW II 37.0 cm 38.0 cm 54.5 cm 3.80 kgs
Lowepro Primus AW 33.5 cm 23.5 cm 51.0 cm 2.90 kgs
Lowepro Pro Trekker AW II 53.5 cm 38.0 cm 59.5 cm 4.30 kgs
Lowepro Rover AW II 34.0 cm 26.0 cm 52.0 cm 1.51 kgs
Lowepro Super Trekker AW II 59.5 cm 38.0 cm 70.0 cm 5.90 kgs
Lowepro Vertex 100 AW 30.0 cm 25.0 cm 42.0 cm 2.29 kgs
Lowepro Vertex 200 AW 32.0 cm 26.0 cm 47.0 cm 3.32 kgs
Lowepro Vertex 300 AW 33.0 cm 26.0 cm 55.0 cm 3.70 kgs
Lowepro CompuDaypack 35.0 cm 21.5 cm 44.5 cm 1.34 kgs
Lowepro CompuPrimus AW 36.5 cm 29.2 cm 59.7 cm 3.50 kgs
Lowepro CompuRover AW 34.0 cm 23.0 cm 55.0 cm 2.42 kgs
Lowepro CompuTrekker AW 34.0 cm 21.6 cm 45.0 cm 1.54 kgs
Lowepro CompuTrekker Plus AW 35.6 cm 23.1 cm 50.2 cm 2.75 kgs
Lowepro Rolling CompuTrekker AW 35.0 cm 24.0 cm 44.8 cm 3.95 kgs
Lowepro Rolling CompuTrekker Plus AW 35.5 cm 25.5 cm 53.2 cm 4.83 kgs
Lowepro DryZone 100 32.0 cm 20.5 cm 44.5 cm 2.36 kgs
Lowepro DryZone 200 37.0 cm 29.0 cm 48.5 cm 3.15 kgs
Lowepro DryZone Rover 33.0 cm 24.5 cm 53.5 cm 2.24 kgs
Lowepro Primus Minimus AW 29.0 cm 23.5 cm 50.5 cm 1.90 kgs
Lowepro Apex 100 AW 13.0 cm 11.5 cm 16.0 cm 0.24 kgs
Lowepro Apex 110 AW 17.0 cm 13.0 cm 16.5 cm 0.32 kgs
Lowepro Apex 120 AW 17.0 cm 13.5 cm 20.0 cm 0.36 kgs
Lowepro Apex 140 AW 20.5 cm 13.5 cm 20.5 cm 0.41 kgs
Lowepro Cirrus 100 17.5 cm 13.0 cm 18.0 cm 0.20 kgs
Lowepro Cirrus 110 20.5 cm 14.5 cm 19.0 cm 0.26 kgs
Lowepro Cirrus 120 23.5 cm 16.0 cm 20.0 cm 0.33 kgs
Lowepro Cirrus 140 26.0 cm 16.0 cm 21.0 cm 0.36 kgs
Lowepro Classified 140 AW 25.0 cm 22.0 cm 30.0 cm 1.00 kgs
Lowepro Classified 160 AW 34.0 cm 22.5 cm 35.5 cm 1.10 kgs
Lowepro Classified 200 AW 46.5 cm 25.0 cm 35.5 cm 1.60 kgs
Lowepro Classified 250 AW 46.5 cm 28.0 cm 35.5 cm 1.90 kgs
Lowepro Commercial AW 48.5 cm 32.0 cm 28.0 cm 2.85 kgs
Lowepro Compact AW 41.0 cm 28.0 cm 28.0 cm 2.10 kgs
Lowepro Elite AW 32.5 cm 28.5 cm 25.0 cm 1.60 kgs
Lowepro Magnum AW 43.0 cm 32.0 cm 25.5 cm 1.38 kgs
Lowepro Midtown 160 32.0 cm 14.5 cm 25.0 cm 0.60 kgs
Lowepro Mini Mag AW 29.0 cm 23.0 cm 28.0 cm 1.38 kgs
Lowepro Nova 140 AW 21.0 cm 17.0 cm 22.0 cm 0.44 kgs
Lowepro Nova 160 AW 24.0 cm 17.5 cm 22.0 cm 0.52 kgs
Lowepro Nova 170 AW 24.2 cm 18.0 cm 24.5 cm 0.58 kgs
Lowepro Nova 180 AW 28.0 cm 22.5 cm 24.0 cm 0.73 kgs
Lowepro Nova 190 AW 33.0 cm 23.5 cm 24.0 cm 0.84 kgs
Lowepro Nova 200 AW 38.0 cm 23.2 cm 25.8 cm 1.36 kgs
Lowepro Pro Mag 2 AW 35.6 cm 22.9 cm 35.6 cm 1.80 kgs
Lowepro Rezo 110 AW 17.8 cm 14.0 cm 16.5 cm 0.36 kgs
Lowepro Rezo 120 AW 17.8 cm 14.5 cm 20.0 cm 0.41 kgs
Lowepro Rezo 140 AW 20.5 cm 14.5 cm 20.5 cm 0.44 kgs
Lowepro Rezo 160 AW 24.0 cm 14.5 cm 21.5 cm 0.47 kgs
Lowepro Rezo 170 AW 24.5 cm 15.5 cm 23.5 cm 0.56 kgs
Lowepro Rezo 180 AW 27.5 cm 21.5 cm 22.5 cm 0.85 kgs
Lowepro Rezo 190 AW 31.0 cm 23.0 cm 22.5 cm 0.95 kgs
Lowepro Stealth Reporter D100 AW 28.5 cm 21.5 cm 19.5 cm 1.22 kgs
Lowepro Stealth Reporter D200 AW 28.0 cm 23.5 cm 23.5 cm 1.37 kgs
Lowepro Stealth Reporter D300 AW 31.5 cm 23.5 cm 23.5 cm 1.45 kgs
Lowepro Stealth Reporter D400 AW 36.5 cm 23.5 cm 28.0 cm 1.86 kgs
Lowepro Stealth Reporter D550 AW 41.0 cm 28.0 cm 30.0 cm 2.41 kgs
Lowepro Stealth Reporter D650 AW 43.5 cm 28.0 cm 32.0 cm 2.83 kgs
Lowepro Terraclime 100 27.5 cm 13.0 cm 18.0 cm 0.40 kgs
Lowepro Classified Sling 180 AW 27.0 cm 22.5 cm 42.0 cm 1.20 kgs
Lowepro Classified Sling 220 AW 33.0 cm 25.0 cm 46.0 cm 1.70 kgs
Lowepro SlingShot 100 AW 20.5 cm 17.0 cm 40.0 cm 0.72 kgs
Lowepro SlingShot 200 AW 24.0 cm 18.0 cm 44.0 cm 0.93 kgs
Lowepro SlingShot 300 AW 33.0 cm 23.0 cm 44.0 cm 1.40 kgs
Lowepro SlingShot 350 AW 33.0 cm 27.5 cm 44.0 cm 1.60 kgs
Lowepro Clips 100 17.0 cm 18.5 cm 13.0 cm 0.25 kgs
Lowepro Clips 110 22.5 cm 15.0 cm 16.5 cm 0.26 kgs
Lowepro Clips 120 25.0 cm 15.5 cm 19.0 cm 0.32 kgs
Lowepro Clips 140 28.0 cm 18.0 cm 19.0 cm 0.49 kgs
Lowepro Edit 100 13.0 cm 10.5 cm 16.5 cm 0.25 kgs
Lowepro Edit 110 19.0 cm 12.0 cm 14.5 cm 0.31 kgs
Lowepro Edit 120 23.0 cm 15.5 cm 21.0 cm 0.40 kgs
Lowepro Edit 120+ 23.0 cm 15.5 cm 26.0 cm 0.56 kgs
Lowepro Edit 130 23.5 cm 12.3 cm 14.5 cm 0.30 kgs
Lowepro Edit 140 28.0 cm 18.0 cm 19.0 cm 0.49 kgs
Lowepro Edit 160 30.0 cm 18.5 cm 23.0 cm 0.64 kgs
Lowepro Impulse 110 21.0 cm 12.5 cm 16.0 cm 0.30 kgs
Lowepro Magnum 200 AW 38.5 cm 24.5 cm 32.0 cm 3.80 kgs
Lowepro Magnum 400 AW 44.0 cm 34.0 cm 33.5 cm 5.30 kgs
Lowepro Magnum 650 AW 49.0 cm 36.0 cm 33.5 cm 7.70 kgs
Lowepro Pro Roller 1 35.5 cm 23.0 cm 54.0 cm 6.40 kgs
Lowepro Pro Roller 2 42.0 cm 28.0 cm 64.0 cm 8.33 kgs
Lowepro Inverse 100 AW 25.6 cm 20.1 cm 22.3 cm 0.79 kgs
Lowepro Inverse 200 AW 32.8 cm 21.8 cm 22.3 cm 0.96 kgs
Lowepro Off Trail 1 31.0 cm 16.0 cm 20.0 cm 0.51 kgs
Lowepro Off Trail 2 34.5 cm 21.0 cm 29.0 cm 0.96 kgs
Lowepro Photo Runner 33.0 cm 16.0 cm 19.0 cm 0.57 kgs
Lowepro Cirrus TLZ 15 18.0 cm 13.0 cm 22.0 cm 0.22 kgs
Lowepro Cirrus TLZ 25 18.0 cm 13.0 cm 26.6 cm 0.25 kgs
Lowepro Cirrus TLZ 5 11.5 cm 11.5 cm 17.0 cm 0.15 kgs
Lowepro Rezo TLZ 10 17.0 cm 12.0 cm 16.0 cm 0.24 kgs
Lowepro Rezo TLZ 20 18.0 cm 13.5 cm 19.5 cm 0.27 kgs
Lowepro Topload Zoom 1 21.0 cm 16.5 cm 22.0 cm 0.20 kgs
Lowepro Topload Zoom 2 21.0 cm 17.0 cm 27.5 cm 0.26 kgs
Lowepro Topload Zoom AW 21.5 cm 19.0 cm 30.5 cm 0.51 kgs
Lowepro Topload Zoom Mini 19.0 cm 15.0 cm 19.0 cm 0.26 kgs
Lowepro Toploader Pro 65 AW 20.3 cm 20.3 cm 22.0 cm 0.70 kgs
Lowepro Toploader Pro 70 AW 20.5 cm 20.3 cm 26.3 cm 0.80 kgs
Lowepro Toploader Pro 75 AW 20.3 cm 20.3 cm 32.5 cm 0.80 kgs
Ps, I'm planning on turning the above data into an online application of some sort which should find its way onto my website.
