Last updated: 05:00 PM ET, Thu June 18 2015

Chicago Owned Nine of 10 Most Delayed Flight Routes in 2014

Airlines & Airports | Patrick Clarke | June 18, 2015

Chicago Owned Nine of 10 Most Delayed Flight Routes in 2014

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Being the world's busiest airport is both a blessing and a curse.

Chicago O'Hare International Airport recently beat out Hartsfield-Jackson Atlanta International Airport for that title after boasting 881,933 flight operations in 2014. But as a result, passengers traveling to and from O'Hare last year saw an uptick in delays.

According to figures from the Bureau of Transportation obtained by the Wall Street Journal, nine of the 10 most delayed flight routes in the U.S. last year involved O'Hare.

Here's a look at the 10 worst routes for on-time arrivals, along with the percentage of flights that failed to arrive on time in 2014:

1. Chicago (ORD) to Knoxville, Tennessee (TYS) - 44.1 percent

2. Chicago (ORD) to Wichita, Kansas (ICT) - 43.9 percent

3. Denver (DEN) to Aspen, Colorado (ASE) - 43.1 percent

4. Chicago (ORD) to Birmingham, Alabama (BHM) - 43.1 percent

5. Des Moines, Iowa (DSM) to Chicago (ORD) - 43 percent

6. Chicago (ORD) to Lansing, Michigan (LAN) - 42.9 percent

7. Little Rock, Arkansas (LIT) to Chicago (ORD) - 42.6 percent

8. Chicago (ORD) to Colorado Springs (COS) - 42.6 percent

9. Chicago (ORD) to Lincoln, Nebraska (LNK) - 42.5 percent

10. Chicago (ORD) to Oklahoma City (OKC) - 42.3 percent 

Flights from O'Hare to Knoxville's McGhee Tyson Airport were delayed more than 44 percent of the time last year. Of the 2,371 flights, 901 arrived late, 140 were canceled and four were diverted. 

According to the Journal, United Airlines attributed its high volume of delays on the Chicago-Knoxville route to bad weather and an adverse schedule, with more than four-fifths of its departures scheduled after 2 p.m. and thus giving delays additional time to build up. 

Fortunately, adjustments have been made in 2015 and United spokeswoman Mary Clark told the Journal that the carrier has seen a 31 percent year-over-year improvement in flights operated on time between O'Hare and McGhee Tyson. 

Meanwhile, Denver to Aspen, Colorado, was the only flight route in the top 10 that didn't include Chicago. That route was delayed more than 43 percent of the time, in large part due to the troublesome weather conditions experienced over the Rocky Mountains.

As for the most canceled U.S. flight route in 2014, New York (LaGuardia Airport) to Washington, D.C. (Washington Dulles International Airport) was the one that caused the most headaches for air travelers, with flights being canceled nearly 12 percent of the time.

Of the 1,382 flights from LaGuardia to Dulles last year, 163 were canceled, while another 323 arrived late.

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