American Airlines

• No free meals
  
• Beverages & pretzel service on most flights; biscotti on morning flights
  
• $4 Snack boxes on most flights over 3 hours
  
• $5 sandwiches & wraps on transcontinental, Alaska and Hawaii flights
  
• Credit cards accepted on most American flights, but not American Eagle and AmericanConnection

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• Free snacks and meals on flights over an hour after 10 a.m.
  
• Flights between two and three and half hours: deli sandwich, carrots, chips
  
• Flights over three and half hours: hot sandwich snack basket

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• One free snack like pretzels on flights less than 1.5 hours
  
• Between 1.5 and 3.5 hours: a choice from a snack basket like Ruffles potato chips, granola bar or cookies
  
• More than 3.5 hours: a choice from snack basket and a more substantial snack pack with items like crostini and cheese spread, raisins and shortbread

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• No free meals
  
• Choice of unlimited snacks on all flights, which range from Terra Blue chips to Pistachio Biscotti
  
• Free snack boxes on some flights more than four hours in length with items like raisins, cheese and crackers.

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• No free meals
  
• $1 snack mix: 3 oz of raisins, almonds, and cashews: available to buy on most flights over an hour with beverage service
  
• On flights over 2 hours, passengers can purchase $3 snack boxes available with boxed items such as granola bar, dried fruit, crackers and cheese spread
  
• Sandwiches available for $5 on flights to and from Hawaii, Alaska, Mexico and the Caribbean: but pre-ordering up to 13 hours before flight is required

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• No free meals
  
• Beverages and pretzels or peanuts on most flights
  
• Non-stops longer than 2 hours, passengers get a snack box with items such as crackers and peanut butter, graham crackers and shortbread

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• No Free Meals, but cocktail snacks complimentary
  
• Flights longer than 3.5 hours: Choice of four $5 snackboxes with items ranging from hickory smoked beef jerky to crackers and lemon and pepper tuna medley (Snackboxes are available on Ted flights longer than 2.5 hours)
  
• Flights over 5 hours: $5 sandwich like a chicken fajita wrap or oriental chicken salad available
  
• Cash only

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• No Free meals, free snacks eliminated
  
• $5 snack boxes available on flights over 2 hours with items like bagel chips, dried fruit, fruit bar, crackers and cheese in the morning; lunch/dinner snack box includes chips and salsa, fruit bowl, breadsticks and cheese
  
• $7 meals available on flight to/from Denver, Las Vegas, Los Angeles, Phoenix, San Francisco and Seattle with breakfast sandwich and breakfast cake in the morning; Deli-style panini sandwich, chips and cookie for lunch
  
• Cash only

Pan Am passengers in Clipper Class got special amenities such as meals with champagne in the late 1970s.