United Flight WN573 Deals & Information (2024/2025)

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United Flight 573 Route Deals From $89

The cheapest prices found with in the last 7 days for return flights were $177 and $89 for one-way flights to San Francisco Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jun 25 - Tue, Jul 2
DEN
Denver Intl.
SFO
San Francisco Intl.
$177 Roundtrip, found 4 hours ago
$177
Roundtrip
found 4 hours ago
Select United flight, departing Tue, Jun 25 from Denver Intl. to San Francisco Intl., returning Tue, Jul 2, priced at $177 found 4 hours ago

Frequently asked questions

What route does flight number UA573 take?
UA573 takes a number of routes. The most frequently flown is between O’Hare Airport and Sky Harbor Intl. Airport (PHX), which flies direct. This service takes around 3 hours and 45 minutes. That said, there may be other flights with this number that are multi-stop.
What terminal does UA573 fly out of?
If you’re heading off from O’Hare Airport, you’ll probably board the plane from Terminal 1. The most traveled route for flight number UA573 is ORD to Sky Harbor Intl. Airport (PHX), which is a direct flight.
What kind of plane is on flight number UA573?
There’s a strong chance you’ll be on a Boeing 737-900 if you’re traveling from O’Hare Airport to Phoenix Sky Harbor Intl. Airport, a popular route for flight number UA573.
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 UA573 flight with Travelocity, please visit our Customer Service Portal.