The Most and Least Stressful US Airports

Long check-in lines and distances between gates were the top factors that make airports stressful, according to a new study.

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A study released Wednesday by KRC Research on behalf of Concur, a provider of travel and expense management solutions, ranked the 16 most stressful U.S. airports based on interviews with 1,500 business travelers. The survey also revealed that availability of electrical outlets and Wi-Fi are important factors among road warriors.

So which airport ranked most stressful — and most hassle-free?

Most Stressful U.S. Airports

Here's the list of the most stressful U.S. airports according to business travelers:

1. Chicago O'Hare International Airport
2. Los Angeles International Airport
3. John F. Kennedy International Airport
4. Hartsfield-Jackson Atlanta International Airport
5. New York's LaGuardia Airport
6. Dallas-Fort Worth International Airport
7. Newark Liberty International Airport
8. George Bush Houston Intercontinental Airport
9. San Francisco International Airport
10. Miami International Airport
11. Washington Dulles International Airport
12. Charlotte/Douglas International Airport
13. Philadelphia International Airport
14. Orlando International Airport
15. Boston Logan International Airport
16. Las Vegas McCarran International Airport

Not surprisingly the most stressful locations — including Chicago O'Hare and Los Angeles International Airport — will be among the busiest next week during the peak Thanksgiving holiday travel period. (Read more: Which Airports Will Be Busiest This Thanksgiving?)

Stress-Inducing Factors

The majority of respondents (56 percent) found the vast distance between gates and terminals to be the biggest challenge at Chicago O'Hare, while nearly half (49 percent) agreed John F. Kennedy International Airport presents some of the longest lines.

Other factors that contribute to airport stress included:

• Confusing airport signs (28 percent)
• Poor service from airport staff (28 percent)
• Not enough or crowded bathrooms (19 percent)
• Poor Wi-Fi coverage (19 percent)
• Insufficient amount of electrical outlets (18 percent)

On the positive side, business travelers named Dallas-Fort Worth as the most hassle-free airport thanks to clear signage (42 percent), good Wi-Fi coverage (41 percent) and a variety of quality food options (41 percent).

For more results and tips to help sooth airport stress, click here.