en.Wedoany.com Reported - According to the latest airport-level passenger traffic data covering February 2025 to January 2026, the route between New York's John F. Kennedy International Airport and London Heathrow Airport recorded a two-way passenger volume of 3,120,901, making it the busiest international route connected to the United States, with an average load factor of 80.7%.
Following closely is the JFK to Paris Charles de Gaulle Airport route, with a passenger volume of 1,734,567 and a load factor of 88.2%. The Los Angeles International Airport to London Heathrow route ranked third with 1,416,910 passengers and a load factor of 78.5%. On the Asian route front, the San Francisco International Airport to Taipei Airport route recorded 1,212,637 passengers, while the Los Angeles to Seoul Incheon route saw 1,168,959 passengers.
The data also reveals strong demand on leisure-oriented routes. The Los Angeles to Guadalajara route carried 1,105,257 passengers with an 84.1% load factor; the Dallas/Fort Worth to Cancun route recorded 1,077,781 passengers with an 84.5% load factor. Despite its shorter distance, the LaGuardia Airport to Toronto Pearson Airport route still reached 1,054,994 passengers, with Air Canada leading the market by carrying over 516,000 passengers and achieving an 83.7% load factor.
On the JFK to Heathrow route, competition among airlines is intense. British Airways carried nearly 1.2 million passengers with an 87.1% load factor; Virgin Atlantic transported over 925,000 passengers with a 77.6% load factor; American Airlines carried nearly 549,000 travelers with a 73.3% load factor; Delta Air Lines transported 284,921 passengers with an 80.5% load factor; and JetBlue carried 164,349 passengers with an 82.7% load factor.
On the San Francisco to Taipei route, EVA Air carried over 532,000 passengers, leading United Airlines, China Airlines, and STARLUX Airlines. Although the route's 74.4% average load factor is lower than some transatlantic markets, airlines continue to expand capacity, benefiting from business demand related to the semiconductor and technology sectors.
The above data includes local passengers and travelers transiting through the two airports. London Heathrow, Paris Charles de Gaulle, Seoul Incheon, and Taipei airports all serve as major international transit gateways, meaning many passengers on these routes are traveling for the purpose of connecting to secondary markets in Europe, Asia, or North America.
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