The Citi® / AAdvantage® Executive World Elite™ Mastercard® is one of the top credit cards for airport lounge access. This card gives its cardholder a complimentary Admiral Club membership, as well as access for authorized users. There are more than 50 clubs worldwide. Plus, primary cardholders will also get access to more than 60 partner lounges in domestic and international destinations.
Currently, the card has a 50,000 miles sign-up bonus after $5,000 spent within the first 3 months of account opening. The annual fee for the card is quite high - $450 - but it's worth all the card's benefits.
If you do not fly with American Airlines, you may like the Barclays Arrival® Premier World Elite Mastercard® credit card that has Mastercard® Airport Experience provided by LoungeKey. This benefit will allow you to access more than 850 airport lounges at a discounted price - $27 per person. Other benefits the card offers are annual loyalty bonuses, miles rewards, and miles transfer to travel partners among the others. The annual fee for the card is rather low - $150 (waived first year).