Bouncing off of this thread about the longest flight, what is the longest domestic flight? Offshore possessions count as domestic to the owning country if flights between them are treated as domestic, e.g. no passport/visa controls.
For example, can you fly directly from Barrow, AK to San Juan, PR? How about all those far-flung French territories?
If a direct flight is available (big if, I know), my guess would be Puerto Rico to Guam. “Distance from x to y” websites list it at about 9400 miles, about a 19 or 20 hour flight. I would be surprised if you could get a direct flight, though. Maybe to Guam from NYC.
I’d say from Paris Charles de Gaulle to Papeete in Tahiti (part of French Polynesia) which is operated by Air France. This appears to be a direct flight.
Distance: 9761 miles.
I missed that you were talking worldwide and not just U.S. (with the tunnel vision so characteristic of my people). Air France has direct flights from Partiss to St. Martin at about 4200 miles, but the airport is on the Dutch half of the island so I’m not sure that counts.
ETA: Never mind, looks like Papeete is double that!
Correction: I looked up a flight on the Air France website and it looks as if Paris - Papeete is not a non-stop flight.
Other candidates:
St. Petersburg, Russia, to Vladivostok
Paris to Cayenne (French Guiana)
(to be verified)
What about Hawaii? How far away from it (in the US) can you get a direct flight to Honolulu?
The longest I’ve been able to find is Newark–Honolulu on United, 4962 miles. (So far as I can tell, the only U.S. destination you can get to from Guam non-stop is Honolulu.) Paris–Cayenne appears to be a non-stop flight on Air France and possibly Air Caraïbes, but is only 4401 miles. Moscow–Vladivostok is a non-stop flight on Aeroflot, but is only 3991 miles.