When it comes to doing business in style, most of the North American corporate travelers seem to have clear preferences for Marriot for a decent stay, Delta for a comfortable flying experience, Avid Car Rental for a hassle-free transfer across the city and Starbucks for their cup of jo, according to a recent study conducted by Certify, a provider of expense management and travel booking software.

The study found Delta Air Lines Inc., Starbucks, Marriott and Avis Car Rental are the airline, restaurant, hotel and rental car companies most frequently expensed among North American business travelers.

Certify analyzed the travel expenses of some of the top enterprises and small businesses from January through March. The study revealed that when it comes to snacking in between work, most of the business travelers would love to head toward their nearby Starbucks. The average expense per traveler for Starbucks was estimated at $9.03, while with an average cost of $8.03 and $14.01, McDonald's and Subway trailed close behind.

The right corporate accommodation is not about just the luxury, it should have all the amenities to keep the executives at their productive best while traveling. According to the report, Marriot happens to be the favorite among today’s traveling executives. With an average cost of $238.29, Marriott was the most-expensed lodging.

Regarding air travel, Delta was the most-expensed carrier in the report. The average cost per traveler for Delta was estimated at $373.80, which is down 21.2 percent from $474.25 in the fourth quarter.

In the car rental sector, Avis was the most-expensed company with a $170.84 average reimbursement sought by each traveler.

Recently Howard Schultz, chairman, president and CEO of Starbucks, announced in its annual meeting a breakthrough innovation in Starbucks loyalty and rewards program, shared progress and future plans for its recent La Boulange, Evolution Fresh and Teavana acquisitions and offered a comprehensive overview of how Starbucks is using its global scale to create a positive, local impact in the communities where it operates and where its partners and customers live and work.