United Flight 3578 Deals & Information (2025/2026)

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

United Flight 3578 Route Deals From $199

The cheapest prices found with in the last 7 days for return flights were $209 and $199 for one-way flights to Newark Liberty Intl. Airport for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

What route does flight number UA3578 take?
UA3578 takes a few routes. The most popular is between Chicago, IL Airport (ORD-O'Hare Intl.) and Ronald Reagan Washington National Airport (DCA), which flies direct. This service typically takes 1 hour and 59 minutes. However, you might find other flights with the same number that have one or more stops.
What terminal does UA3578 fly out of?
If you're booked on a flight from O'Hare Intl. Airport (ORD), there's a good chance you'll board from Terminal 2. The most frequented route for UA3578 is O'Hare Airport to Washington, DC Airport (DCA-Ronald Reagan Washington National), which is a nonstop flight.
What kind of plane is on flight number UA3578?
UA3578 is a flight number that serves several routes. If you're heading off on the most frequent route, O'Hare Airport to Washington, DC Airport (DCA-Ronald Reagan Washington National), chances are you'll be climbing on board the Embraer 175.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your UA3578 flight with Travelocity, please visit our Customer Service Portal.