Airlines cannot charter flights between two countries unless they are based in one of them. That’s why you won’t find Delta offering trips from Canada to France, or Malaysia Airlines operating between the U.S. and the UK.
However, as the Wall Street Journal points out, a 1944 treaty makes exceptions. “Some airlines are permitted to transport passengers between two foreign countries, typically when a fuel stop is involved,” says Scott McCartney, Middle Seat columnist for the Journal. “This is called the fifth freedom, established by an international agreement in 1944. The treaty outlines nine aviation freedoms, defining what commercial airlines can and cannot do across the globe.”
The other aviation freedoms in the treaty address things like the right to fly over one country on the way to another. But the fifth freedom allows an airline to “sell tickets for direct flights between cities in countries where they would not normally operate,” as long as the journey starts or ends in the airline’s home nation, according to Airfare Watchdog. This loophole means you might score a great deal on a lesser-known airline.
Often, these airlines offer superior products, more convenient departure times, and better service compared to U.S.-based competitors on certain routes. Especially when you choose premium carriers like Singapore Airlines or Cathay Pacific, which regularly top global rankings, over a local option.
Flights from Hawaii to Japan are quite popular, though there are many other choices as noted by Airfare Watchdog. For instance, you can fly from Los Angeles to London or Tokyo with Air New Zealand, or from New York to Milan or Athens via Emirates. Singapore Airlines operates a “daily route from JFK to Frankfurt to Singapore and back,” according to the Journal. Singapore is the only airline offering direct flights from Texas to northern England.
These flights can be found on platforms like Airfare Watchdog, or directly through the airline websites, including Cathay Pacific, Emirates, Korean Air, and Singapore Airlines.
