United Flight 863 Deals & Information (2025/2026)

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United Flight 863 Route Deals From $1,173

The cheapest prices found with in the last 7 days for return flights were $839 and $1,173 for one-way flights to Kingsford Smith Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Dec 8 - Fri, Dec 12
SFO
San Francisco Intl.
SYD
Kingsford Smith Intl.
$839 Roundtrip, found 1 day ago
$839
Roundtrip
found 1 day ago
Select United flight, departing Mon, Dec 8 from San Francisco Intl. to Kingsford Smith Intl., returning Fri, Dec 12, priced at $839 found 1 day ago
Sat, Mar 14 - Sat, Mar 21
SFO
San Francisco Intl.
SYD
Kingsford Smith Intl.
$842 Roundtrip, found 23 hours ago
$842
Roundtrip
found 23 hours ago
Select United flight, departing Sat, Mar 14 from San Francisco Intl. to Kingsford Smith Intl., returning Sat, Mar 21, priced at $842 found 23 hours ago
Mon, Dec 8 - Fri, Dec 12
SFO
San Francisco Intl.
SYD
Kingsford Smith Intl.
$844 Roundtrip, found 1 day ago
$844
Roundtrip
found 1 day ago
Select United flight, departing Mon, Dec 8 from San Francisco Intl. to Kingsford Smith Intl., returning Fri, Dec 12, priced at $844 found 1 day ago
Mon, Dec 8 - Fri, Dec 12
SFO
San Francisco Intl.
SYD
Kingsford Smith Intl.
$849 Roundtrip, found 1 day ago
$849
Roundtrip
found 1 day ago
Select United flight, departing Mon, Dec 8 from San Francisco Intl. to Kingsford Smith Intl., returning Fri, Dec 12, priced at $849 found 1 day ago
Wed, Mar 11 - Mon, Mar 16
SFO
San Francisco Intl.
SYD
Kingsford Smith Intl.
$851 Roundtrip, found 5 days ago
$851
Roundtrip
found 5 days ago
Select United flight, departing Wed, Mar 11 from San Francisco Intl. to Kingsford Smith Intl., returning Mon, Mar 16, priced at $851 found 5 days ago
Sat, Mar 14 - Sat, Mar 21
SFO
San Francisco Intl.
SYD
Kingsford Smith Intl.
$852 Roundtrip, found 23 hours ago
$852
Roundtrip
found 23 hours ago
Select United flight, departing Sat, Mar 14 from San Francisco Intl. to Kingsford Smith Intl., returning Sat, Mar 21, priced at $852 found 23 hours ago
Sat, Aug 1 - Sun, Aug 9
SFO
San Francisco Intl.
SYD
Kingsford Smith Intl.
$854 Roundtrip, found 2 days ago
$854
Roundtrip
found 2 days ago
Select United flight, departing Sat, Aug 1 from San Francisco Intl. to Kingsford Smith Intl., returning Sun, Aug 9, priced at $854 found 2 days ago
Sat, Mar 14 - Sat, Mar 21
SFO
San Francisco Intl.
SYD
Kingsford Smith Intl.
$857 Roundtrip, found 23 hours ago
$857
Roundtrip
found 23 hours ago
Select United flight, departing Sat, Mar 14 from San Francisco Intl. to Kingsford Smith Intl., returning Sat, Mar 21, priced at $857 found 23 hours ago

Frequently asked questions

What route does flight number UA863 take?
UA863 takes about 15 hours and 10 minutes to fly non-stop from San Francisco Intl. Airport (SFO) to SYD. We all know there's magic in the destination, but half the fun is in the journey!
What terminal does UA863 fly out of?
Passengers on flight number UA863 from San Francisco Airport to Mascot Airport normally board the plane from Terminal I.
What kind of plane is on flight number UA863?
The route for UA863 is most commonly SFO to Kingsford Smith Intl. Airport (SYD), and the Boeing 787-9 is the type of aircraft you're likely to be flying with.
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 UA863 flight with Travelocity, please visit our Customer Service Portal.