UA2840 distance and great-circle path
UA2840 covers 9,341 km, or 5,804 miles. That makes it an ultra-long-haul flight, near the limit of what most twinjets can fly non-stop. Of the 487 routes we track, it ranks 100 by distance.
Hagåtña to San Francisco crosses the international date line. The 9,341 km track runs north-east, and the calendar date at the gate in San Francisco will not be the one the cabin expects. It links GU with United States.
Our guide explains how the GUM-SFO route appears on a tracker map.
Can the Boeing 737-800 comfortably fly UA2840?
Yes. The route uses roughly 162% of what a Boeing 737-800 can fly. On a windy day the airline may carry less cargo to save fuel. Flights this close to the limit are the ones that sometimes make a fuel stop. The full numbers are on our aircraft page for the Boeing 737-800.
What to know about UA2840
- Time change: you land 18 hours behind the time you left. That is enough to cause jet lag. Here is how pilots handle it.
- Crosses the date line: the calendar date changes while you are in the air.