United Flight 720 Deals & Information (2025/2026)

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United Flight 720 Route Deals From $87

The cheapest prices found with in the last 7 days for return flights were $184 and $87 for one-way flights to Calgary Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Jul 26 - Wed, Jul 30
DEN
Denver Intl.
YYC
Calgary Intl.
$184 Roundtrip, found 1 day ago
$184
Roundtrip
found 1 day ago
Select United flight, departing Sat, Jul 26 from Denver Intl. to Calgary Intl., returning Wed, Jul 30, priced at $184 found 1 day ago
Sat, Jul 26 - Wed, Jul 30
DEN
Denver Intl.
YYC
Calgary Intl.
$207 Roundtrip, found 1 day ago
$207
Roundtrip
found 1 day ago
Select United flight, departing Sat, Jul 26 from Denver Intl. to Calgary Intl., returning Wed, Jul 30, priced at $207 found 1 day ago
Sat, Jul 5 - Sat, Jul 12
DEN
Denver Intl.
YYC
Calgary Intl.
$244 Roundtrip, just found
$244
Roundtrip
just found
Select United flight, departing Sat, Jul 5 from Denver Intl. to Calgary Intl., returning Sat, Jul 12, priced at $244 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.