United Flight AA5921 Deals & Information (2025/2026)

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United Flight 5921 Route Deals From $129

The cheapest prices found with in the last 7 days for return flights were $198 and $129 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

What route does flight number UA5921 take?
UA5921 operates from Hartsfield–Jackson Atlanta International Airport to ORD and flies direct. This service typically takes 2 hours and 9 minutes.
How often is UA5921 on time?
United Airlines flight number UA5921 from Atlanta, GA Airport (ATL-Hartsfield-Jackson Atlanta Intl.) to ORD takes off on time 97% of the time — so you can relax knowing that you will reach your destination ASAP. If the journey is late, you can expect to wait roughly 14 minutes. This route has a 4.1-star rating.
What terminal does UA5921 fly out of?
Flights to and from Hartsfield-Jackson Atlanta Intl. Airport (ATL) and O'Hare Intl. Airport (ORD) are served by flight number UA5921, and passengers who travel on this route typically depart from Terminal N.
What kind of plane is on flight number UA5921?
The Bombardier CRJ700 is the type of plane most often used for flight number UA5921. This flight nearly always leaves from Atlanta, GA Airport (ATL-Hartsfield-Jackson Atlanta Intl.) and comes in to land at O'Hare Airport.
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 UA5921 flight with Travelocity, please visit our Customer Service Portal.