United Flight UA539 Deals & Information (2025/2026)

UA539 serves multiple routes, but the most common is between San Francisco Intl. Airport (SFO) and Kahului Airport. If you manage to score a direct flight, you’ll disembark the plane in approximately 5 hours and 25 minutes. Multi-stop flights can also travel under this number, as can flights on other routes.

You’ll likely board the plane from Terminal 3 if you’re booked on a flight out of San Francisco, CA Airport (SFO-San Francisco Intl.). UA539 serves a number of different routes, but the direct flight between San Francisco, CA Airport (SFO-San Francisco Intl.) and Kahului, HI Airport (OGG) is the most frequently traveled.

UA539 is a flight number that serves many different routes. If you’re booked on the most common route, San Francisco, CA Airport (SFO-San Francisco Intl.) to Kahului, HI Airport (OGG), you’ll likely be climbing aboard a Boeing 737-800.

For more info about changing your UA539 flight with Travelocity, please visit our Customer Service Portal.