Ship was fastest, usually with a Lisbon, Portugal stopover. Land route would usually head through france and germany, south through italy, and then by boat across the mediterranean, not unlike the crusaders.
via Constantinople would be excess travel.
here, this may help....
London to Port Said:
P&O mail steamer every Friday via Gibraltar and Marseilles, 12 days
British India Steam Navigation (3-4 times a month), 12 days
Orient Line (every other Sat, via Gibraltar, Toulon, and Naples); 12 days
Union-Castel Line, 1x a month via Marseilles and Genoa; 12 days
Nippon Yusen Kaisha; fortnightly in 13 days via Gibraltar, Marseilles, Naples
Southhampton to Port Said
Rotterdam Lloyd: via Tangier and Marseilles, 11 days (every other Fri)
Nederland Line: every other Thurs, via Algiers and Genoa, 12 days
German African Services, every 3 weeks; via Lisbon, Tangier, Malaga, Genoa; no note on time