United Flight 511 Deals & Information (2025/2026)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

United Flight 511 Route Deals From $76

The cheapest prices found with in the last 7 days for return flights were $112 and $76 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Oct 14 - Fri, Oct 17
PHL
Philadelphia Intl.
ORD
O'Hare Intl.
$112 Roundtrip, found 1 day ago
$112
Roundtrip
found 1 day ago
Select United flight, departing Tue, Oct 14 from Philadelphia Intl. to O'Hare Intl., returning Fri, Oct 17, priced at $112 found 1 day ago
Tue, Sep 30 - Wed, Oct 1
PHL
Philadelphia Intl.
ORD
O'Hare Intl.
$119 Roundtrip, found 1 day ago
$119
Roundtrip
found 1 day ago
Select United flight, departing Tue, Sep 30 from Philadelphia Intl. to O'Hare Intl., returning Wed, Oct 1, priced at $119 found 1 day ago
Tue, Sep 30 - Wed, Oct 1
PHL
Philadelphia Intl.
ORD
O'Hare Intl.
$119 Roundtrip, found 1 day ago
$119
Roundtrip
found 1 day ago
Select United flight, departing Tue, Sep 30 from Philadelphia Intl. to O'Hare Intl., returning Wed, Oct 1, priced at $119 found 1 day ago
Tue, Sep 30 - Fri, Oct 3
PHL
Philadelphia Intl.
ORD
O'Hare Intl.
$130 Roundtrip, found 22 hours ago
$130
Roundtrip
found 22 hours ago
Select United flight, departing Tue, Sep 30 from Philadelphia Intl. to O'Hare Intl., returning Fri, Oct 3, priced at $130 found 22 hours ago
Tue, Oct 28 - Thu, Oct 30
PHL
Philadelphia Intl.
ORD
O'Hare Intl.
$131 Roundtrip, found 3 days ago
$131
Roundtrip
found 3 days ago
Select United flight, departing Tue, Oct 28 from Philadelphia Intl. to O'Hare Intl., returning Thu, Oct 30, priced at $131 found 3 days ago