DOT: Average domestic airfare increased to $381 in 2013

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The average amount that was paid by U.S. airline passengers for domestic flights increased to $381 in 2013, the Department of Transportation said Tuesday. 

The transportation department said the 2013 ticket price was 0.1 percent higher than the 2012 average of $380. The agency added that the 2013 figure was 17 percent lower than the 2000 average when the amount was adjusted for inflation, which would've resulted in average ticket price then of $459.

The DOT said the 2013 figure was the highest average airfare amount not adjusted for inflation since the DOT began collecting fare data in 1995. 

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The most expensive U.S. airport to fly out of in the last quarter of 2013 was Huntsville International Airport in Alabama, which averaged $527.52. The Huntsville airport was followed by Cincinnati/Northern Kentucky International Airport and Washington, D.C.'s Dulles International Airport, which had average fourth quarter 2013 fares of $510.36 and $505.62 respectively.

The top five most expensive airports in the U.S. in the months between October and December 2013 were rounded by Newark, N.J.'s Liberty International and Houston's George Bush Intercontinental airports, which averaged fares of $498.71 and $497.61.

The least expensive airport in the DOT's rankings of the top 100 busiest U.S. airports was Long Beach, Calif.'s airport, which had average fares of $243.63 in the last quarter of 2013.

The Long Beach airport is only served by JetBlue Airlines and regional carriers for Delta and Alaska airlines and US Airways.

The full DOT study on airline fares can be read here.