United Flight WN720 Deals & Information (2025/2026)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

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

Change your flight without a fee on select flights

United Flight 720 Route Deals From $71

The cheapest prices found with in the last 7 days for return flights were $193 and $71 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, May 21 - Tue, May 27
SFO
San Francisco Intl.
DEN
Denver Intl.
$193 Roundtrip, just found
$193
Roundtrip
just found
Select United flight, departing Wed, May 21 from San Francisco Intl. to Denver Intl., returning Tue, May 27, priced at $193 just found

Frequently asked questions

What route does flight number UA720 take?
You’ll be landing at DIA airport from San Francisco, CA Airport (SFO-San Francisco Intl.) if you’re traveling on flight number UA720. You’ll be airborne for 2 hours and 35 minutes on this trip. What’s more, the flight conveniently operates non-stop.
What terminal does UA720 fly out of?
You’ll likely be departing from Terminal 3 if you’re traveling on flight number UA720 direct from San Francisco Intl. Airport (SFO) to DEN.
What kind of plane is on flight number UA720?
The Boeing 737-800 is the kind of plane that’s mostly used for flight number UA720. Typically, this flight takes off from SFO and comes in to land at DIA 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 UA720 flight with Travelocity, please visit our Customer Service Portal.