Considering only comparable fare classifications, which classifications offer the greatest percentage difference between air travel and ship travel? Travel Type Sample Round-Trip Fares from New York to London First-Class Air Fare $754.30 First-Class Ship Fare $775.20 Regular Economy Air Fare $440.80 Tourist Class Ship Fare $408.00 Peak Season Economy Air Fare $526.30 Peak Season Tourist Class Ship Fare $470.25 14-to 21-Day Excursion Air Fare $331.00 30-Day Excursion Ship Fare $345.95 Charter Group (25 Persons or More) Air Fare $331.00 Charter Group (25 Persons or More) Ship Fare $306.00 Regular economy air fare - tourist class ship fare would be $ The percentage difference would be %. > Peak season economy air fare - peak season tourist ship fare = $ The percentage difference would be %. Charter group air fare - Charter group ship fare = $ The percentage difference would be %​