American Airlines Flight 857 Deals & Information (2025/2026)

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American Airlines Flight 857 Route Deals From $67

The cheapest prices found with in the last 7 days for return flights were $87 and $67 for one-way flights to San Francisco Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Dec 3 - Sat, Dec 6
PHX
Sky Harbor Intl.
SFO
San Francisco Intl.
$87 Roundtrip, found 3 days ago
$87
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Dec 3 from Sky Harbor Intl. to San Francisco Intl., returning Sat, Dec 6, priced at $87 found 3 days ago
Wed, Dec 3 - Sun, Dec 7
PHX
Sky Harbor Intl.
SFO
San Francisco Intl.
$91 Roundtrip, found 1 day ago
$91
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Dec 3 from Sky Harbor Intl. to San Francisco Intl., returning Sun, Dec 7, priced at $91 found 1 day ago