United Flight 393 Deals & Information (2025/2026)

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United Flight 393 Route Deals From $39

The cheapest prices found with in the last 7 days for return flights were $77 and $39 for one-way flights to San Francisco Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Oct 23 - Mon, Oct 27
ONT
Los Angeles - Ontario Intl.
SFO
San Francisco Intl.
$77 Roundtrip, found 10 hours ago
$77
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Oct 23 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Mon, Oct 27, priced at $77 found 10 hours ago
Thu, Oct 23 - Mon, Oct 27
ONT
Los Angeles - Ontario Intl.
SFO
San Francisco Intl.
$85 Roundtrip, found 10 hours ago
$85
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Oct 23 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Mon, Oct 27, priced at $85 found 10 hours ago
Thu, Oct 23 - Mon, Oct 27
ONT
Los Angeles - Ontario Intl.
SFO
San Francisco Intl.
$108 Roundtrip, found 10 hours ago
$108
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Oct 23 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Mon, Oct 27, priced at $108 found 10 hours ago
Thu, Oct 23 - Mon, Oct 27
ONT
Los Angeles - Ontario Intl.
SFO
San Francisco Intl.
$109 Roundtrip, found 10 hours ago
$109
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Oct 23 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Mon, Oct 27, priced at $109 found 10 hours ago
Sat, Oct 18 - Tue, Oct 21
ONT
Los Angeles - Ontario Intl.
SFO
San Francisco Intl.
$114 Roundtrip, found 3 days ago
$114
Roundtrip
found 3 days ago
Select United flight, departing Sat, Oct 18 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Tue, Oct 21, priced at $114 found 3 days ago
Wed, Oct 1 - Fri, Oct 3
ONT
Los Angeles - Ontario Intl.
SFO
San Francisco Intl.
$119 Roundtrip, found 1 hour ago
$119
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Oct 1 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Fri, Oct 3, priced at $119 found 1 hour ago
Thu, Nov 27 - Tue, Dec 2
ONT
Los Angeles - Ontario Intl.
SFO
San Francisco Intl.
$134 Roundtrip, found 1 day ago
$134
Roundtrip
found 1 day ago
Select United flight, departing Thu, Nov 27 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Tue, Dec 2, priced at $134 found 1 day ago
Thu, Sep 25 - Sun, Sep 28
ONT
Los Angeles - Ontario Intl.
SFO
San Francisco Intl.
$135 Roundtrip, found 2 hours ago
$135
Roundtrip
found 2 hours ago
Select United flight, departing Thu, Sep 25 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Sun, Sep 28, priced at $135 found 2 hours ago
Thu, Oct 9 - Sun, Oct 12
ONT
Los Angeles - Ontario Intl.
SFO
San Francisco Intl.
$140 Roundtrip, found 1 hour ago
$140
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Oct 9 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Sun, Oct 12, priced at $140 found 1 hour ago

Frequently asked questions

What route does flight number UA393 take?
UA393 is used on a range of routes. More commonly, UA393 flies direct from Washington Dulles Intl. Airport (IAD) to DIA airport. If you have a ticket on this route, you'll be in the air for roughly 3 hours and 55 minutes.
What kind of plane is on flight number UA393?
It's likely you'll be taking off on a Boeing 737-800 if you've booked a seat from IAD to Denver, CO Airport (DEN-Denver Intl.), one of a few routes used for flight UA393.
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 UA393 flight with Travelocity, please visit our Customer Service Portal.