United Flight WN1572 Deals & Information (2025/2026)

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United Flight 1572 Route Deals From $114

The cheapest prices found with in the last 7 days for return flights were $273 and $114 for one-way flights to Lambert-St. Louis Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Sep 9 - Sat, Sep 13
SFO
San Francisco Intl.
STL
Lambert-St. Louis Intl.
$273 Roundtrip, found 4 days ago
$273
Roundtrip
found 4 days ago
Select United flight, departing Tue, Sep 9 from San Francisco Intl. to Lambert-St. Louis Intl., returning Sat, Sep 13, priced at $273 found 4 days ago
Wed, Oct 29 - Mon, Nov 3
SFO
San Francisco Intl.
STL
Lambert-St. Louis Intl.
$277 Roundtrip, found 1 day ago
$277
Roundtrip
found 1 day ago
Select United flight, departing Wed, Oct 29 from San Francisco Intl. to Lambert-St. Louis Intl., returning Mon, Nov 3, priced at $277 found 1 day ago
Wed, Oct 29 - Mon, Nov 3
SFO
San Francisco Intl.
STL
Lambert-St. Louis Intl.
$287 Roundtrip, found 1 day ago
$287
Roundtrip
found 1 day ago
Select United flight, departing Wed, Oct 29 from San Francisco Intl. to Lambert-St. Louis Intl., returning Mon, Nov 3, priced at $287 found 1 day ago
Tue, Jul 29 - Tue, Aug 5
SFO
San Francisco Intl.
STL
Lambert-St. Louis Intl.
$304 Roundtrip, found 12 hours ago
$304
Roundtrip
found 12 hours ago
Select United flight, departing Tue, Jul 29 from San Francisco Intl. to Lambert-St. Louis Intl., returning Tue, Aug 5, priced at $304 found 12 hours ago
Tue, Jul 29 - Tue, Aug 5
SFO
San Francisco Intl.
STL
Lambert-St. Louis Intl.
$315 Roundtrip, found 12 hours ago
$315
Roundtrip
found 12 hours ago
Select United flight, departing Tue, Jul 29 from San Francisco Intl. to Lambert-St. Louis Intl., returning Tue, Aug 5, priced at $315 found 12 hours ago