First class offers more space, privacy, and service, while business class costs less and usually still has lie-flat seats on long flights.
Seats
Business class has lie-flat or angled seats, extra legroom and a 2-2 or 1-2-1 layout. First class offers larger private suites, more space, and top service on some airlines.
Service
First class has multi-course dining, premium alcohol and sometimes showers (like Emirates). Business class has good meals and lounge access.
Cost
First class often costs 20 to 50 percent more than business. Business class tickets cost 3 to 5 times economy.
Availability
Many US airlines have dropped first class on international flights. In the US, “first class” on domestic flights is similar to a premium seat.
Value
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Business class is often the best value for long-haul comfort.
Miles
Award rates differ.
Seats
Business class seats on long haul flights typically recline into a lie-flat bed, with direct aisle access in many modern layouts, and a pitch of 60 to 80 inches when reclined. First class, which has become rare on US airlines, offers a larger private suite, sometimes with a door, a separate bed and more space, up to 30 inches in width. Premium cabins on short flights have wider recliner seats with 36 to 40 inches of pitch.
Service

Business class typically includes priority check-in, lounge access, priority boarding, multi-course meals with better wine, amenity kits, noise cancelling headphones and more attentive service. First class adds a higher staff ratio, premium dining on demand, chauffeur service at some airlines, shower facilities and private check-in areas.
Cost
Business class fares are commonly 3 to 5 times the economy price, and first class is often 5 to 10 times or more. A transatlantic round trip in business class may cost $3,000 to $7,000, and first class $8,000 to $20,000 or more. Prices swing widely with route and time.
Availability
Most airlines have dropped first class on many routes in favor of premium economy and business. On domestic US flights, “first class” is actually a domestic business product. On international routes, first class is offered by airlines such as Emirates, Singapore Airlines, Qatar Airways, Lufthansa and Air France, but fewer than a dozen carriers still sell true first class.
Value
For many travelers, business class provides most of the comfort needed, especially a lie-flat bed on overnight flights. First class’s extra cost is hard to justify unless using miles or upgrading. Premium economy, at 1.5 to 2 times economy fare, is a mid-tier option with more legroom of around 38 inches.
Miles
Award tickets for business class cost between 50,000 and 100,000 miles one way on many international routes. First class can cost 80,000 to 200,000 miles. Look for transfer bonuses, sweet spots and partner airline awards. Taxes and fees on awards can be high on some airlines.
Typical differences in numbers
Business class seats on long haul flights are often lie-flat with about 75 to 80 inches of pitch and widths of 20 inches or more, while first class suites can have doors, a separate bed and more than 30 square feet of space. Domestic US first class is usually a larger recliner seat, similar to international premium economy. A transatlantic business class ticket often costs 3 to 5 times the price of economy, and first class may cost 10,000 USD or more. Many airlines such as United, Delta and British Airways have kept first class only on select aircraft, while Emirates, Singapore Airlines and Lufthansa still offer it. Access to lounges, priority boarding, extra baggage and multi-course meals are common in both. A frequent flyer program can lower the cost through points upgrades.
Based on data from airline published cabin descriptions and the US Department of Transportation






