<human>:  What are the best credit cards for frequent travelers?
<bot>: The best credit cards for frequent travelers typically offer rewards for travel-related purchases, like airline and hotel stays, as well as other features, such as no foreign transaction fees, airline lounge access, and travel insurance. Credit cards from major airlines, such as American Airlines, Delta, and United, can offer several benefits for frequent flyers, including discounts on airfare and rewards for miles flown. Other cards, such as the Chase Sapphire Preferred and Citi Premier, offer more general rewards and bonuses for travel expenses.