Delta Comfort+ is a Delta Air Lines’ enhanced economy class ticket for those who want to upgrade from its basic economy fares. Delta Comfort+ seats typically cost between $50 and $150 more than regular economy tickets for domestic flights and between $100 and $300 more for international flights. Delta Comfort+ is one of around a dozen classes offered on Delta flights (not all classes are offered on all flights). But are the benefits of Comfort+ and are they worth the increased fare?