United Flight UA2321 Deals & Information (2025/2026)

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United Flight 2321 Route Deals From $79

The cheapest prices found with in the last 7 days for return flights were and $79 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 UA2321 take?
UA2321 takes roughly 2 hours and 38 minutes to fly straight from Phoenix, AZ Airport (PHX-Sky Harbor Intl.) to George Bush Intercontinental Airport (IAH). Sure, there’s magic in the destination, but the journey is always half the fun!
How often is UA2321 on time?
United Airlines flight number UA2321 from Phoenix Sky Harbor Intl. Airport to Houston, TX Airport (IAH-George Bush Intercontinental) runs as scheduled 95% of the time — so you can relaxing knowing you’ll arrive at your destination ASAP. If this trip happens to be delayed, the average wait is approximately 4 minutes. This route has a 4.6-star rating.
What terminal does UA2321 fly out of?
Flights between Phoenix, AZ Airport (PHX-Sky Harbor Intl.) and Houston, TX Airport (IAH-George Bush Intercontinental) are served by UA2321, and passengers with a seat booked on this route usually jet off from Terminal 3.
What kind of plane is on flight number UA2321?
The route for UA2321 is predominantly Phoenix, AZ Airport (PHX-Sky Harbor Intl.) to Houston, TX Airport (IAH-George Bush Intercontinental), and the Boeing 737-800 is the aircraft model you’ll probably be traveling aboard.
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 UA2321 flight with Travelocity, please visit our Customer Service Portal.