United Flight WN1999 Deals & Information (2025/2026)

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United Flight 1999 Route Deals From $80

The cheapest prices found with in the last 7 days for return flights were $135 and $80 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Aug 4 - Wed, Aug 6
SNA
John Wayne
DEN
Denver Intl.
$135 Roundtrip, found 14 hours ago
$135
Roundtrip
found 14 hours ago
Select United flight, departing Mon, Aug 4 from John Wayne to Denver Intl., returning Wed, Aug 6, priced at $135 found 14 hours ago
Wed, Sep 24 - Wed, Oct 1
SNA
John Wayne
DEN
Denver Intl.
$157 Roundtrip, found 23 hours ago
$157
Roundtrip
found 23 hours ago
Select United flight, departing Wed, Sep 24 from John Wayne to Denver Intl., returning Wed, Oct 1, priced at $157 found 23 hours ago
Mon, Aug 4 - Wed, Aug 6
SNA
John Wayne
DEN
Denver Intl.
$160 Roundtrip, found 14 hours ago
$160
Roundtrip
found 14 hours ago
Select United flight, departing Mon, Aug 4 from John Wayne to Denver Intl., returning Wed, Aug 6, priced at $160 found 14 hours ago

Frequently asked questions

What route does flight number UA1999 take?
UA1999 jets between San Francisco Airport and Denver, CO Airport (DEN-Denver Intl.) and is a direct flight. This trip generally takes 2 hours and 34 minutes.
What terminal does UA1999 fly out of?
UA1999 runs between San Francisco, CA Airport (SFO-San Francisco Intl.) and Denver Intl. Airport (DEN), and those taking this flight commonly depart from Terminal 3.
What kind of plane is on flight number UA1999?
The Airbus A320 is the aircraft model most often used for flight UA1999. This flight typically departs from San Francisco, CA Airport (SFO-San Francisco Intl.) 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 UA1999 flight with Travelocity, please visit our Customer Service Portal.