This comes from the Bureau of Transportation Statistics (
https://www.transtats.bts.gov/Data_Elements.aspx?Data=1). It is a measure in 2017 of how many passengers arrived at each airport via an international flight.
2017, international arrivals by number of passengers
1. NY JFK: 16,281,108 passengers
2. Los Angeles: 12,012,484 passengers
3. Miami: 10,118,266 passengers
4. San Francisco: 6,564,588 passengers
5. Chicago O'Hare: 6,420,304 passengers
6. Newark: 6,241,804 passengers
7. Atanta: 5,915,672 passengers
8. Houston: 5,038,524 passengers
9. Dallas : 4,155,427 passengers
10. DC Dulles: 3,775,472 passengers
11. Fort Lauderdale: 3,573,448 passengers
12. Boston: 3,400,073 passengers
13. Orlando: 2,904,702 passengers
14. Seattle: 2,488,025 passengers
15. Honolulu: 2,320,237 passengers
Change in international arrivals by passenger, 2016 to 2017
1. Los Angeles: +967,744 passengers
2. Fort Lauderdale: +647,165 passengers
3. San Francisco: +418,936 passengers
4. NY JFK: +393,962 passengers
5. Chicago O'Hare: +389,217 passengers
6. Newark: +349,411 passengers
7. Atlanta: +324,851 passengers
8. Boston: +294,462 passengers
9. Miami: +261,604 passengers
10. Dallas DFW: +205,693 passengers
11. DC Dulles: +167,285 passengers
12. Orlando: +156,515 passengers
13. Denver: +148,130 passengers
14. Seattle: +117,786 passengers
15. Detroit: +80,139 passengers
Interestingly, Houston, Philadelphia, and Honolulu all declined in international passenger. Houston declined by the most: -276,640 passengers.