Last year was a record one for international air travel in and out of the United States.

According to the U.S. Department of Commerce’s National Travel & Tourism Office, 185.4 million passengers arrived or departed from U.S. airports, a 4% increase over the previous year. Those passengers flew through a few key airports, both domestic and abroad.

Of the foreign airports funneling passengers in and out of the U.S. ten of them were responsible for 40% of all the traffic. London’s Heathrow Airport was the undisputed leader, with over 14 million passengers going to and from the U.S. It’s a good 30% greater than its nearest competitor, Toronto’s Pearson International. Two airports in Mexico — Cancun and Mexico City — saw the greatest increase in traffic in 2013, a good sign for tourism in the country.

Top 10 Foreign Airports:

RankAirportPassengers (millions)% Change YoY
1.London Heathrow (LHR)14.3572.1%
2.Toronto (YYZ)10.8754.5%
3.Tokyo Narita (NRT)9.597-0.1%
4.Frankfurt (FRT)6.6951.9%
5.Paris/de Gaulle (CDG)6.3834.7%
6.Cancun (CUN)6.1767.3%
7.Mexico City (MEX)5.9428.9%
8.Incheon (ICT)5.0355.7%
9.Amsterdam (AMS)4.6015.1%
10.Vancouver (YVR)4.4400.4%

Source: The National Travel & Tourism Office

Among U.S. airports, the top ten respresented a dominant share of the international traffic. From New York’s JFK, to Dallas-Fort Worth Airport, 129.9 million Passengers or 70% of the total air traffic, flowed through the leaders. Dallas, Chicago’s O’Hare, and JFK saw the greatest increase in traffic, while New York-Newark remained relatively flat.

Top 10 U.S. Airports:

RankAirportPassengers (millions)% Change YoY
1.New York (JFK)26.6625.4%
2.Miami (MIA)20.1184.7%
3.Los Angeles (LAX)17.7533.7%
4.Newark (EWR)11.5871.1%
5.Chicago (ORD)11.1835.1%
6.Atlanta (ATL)10.2284.0%
7.San Francisco (SFO)9.6983.7%
8.Houston (IAH)9.0303.5%
9.Washington Dulles (IAD)6.9314.2%
10.Dallas-Ft Worth (DFW)6.68611.3%

Source: The National Travel & Tourism Office

Photo Credit: Dallas-Fort Worth Airport saw the greatest increase in international travel of any U.S. airport. Joyce Marshall / Fort Worth Star-Telegram/MCT