United Flight AA1156 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 1156 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 O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jan 7 - Wed, Jan 14
STL
Lambert-St. Louis Intl.
ORD
O'Hare Intl.
$77 Roundtrip, found 2 days ago
$77
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jan 7 from Lambert-St. Louis Intl. to O'Hare Intl., returning Wed, Jan 14, priced at $77 found 2 days ago
Wed, Jan 7 - Wed, Jan 14
STL
Lambert-St. Louis Intl.
ORD
O'Hare Intl.
$84 Roundtrip, found 2 days ago
$84
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jan 7 from Lambert-St. Louis Intl. to O'Hare Intl., returning Wed, Jan 14, priced at $84 found 2 days ago
Wed, Jan 7 - Wed, Jan 14
STL
Lambert-St. Louis Intl.
ORD
O'Hare Intl.
$116 Roundtrip, found 2 days ago
$116
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jan 7 from Lambert-St. Louis Intl. to O'Hare Intl., returning Wed, Jan 14, priced at $116 found 2 days ago
Wed, Jan 7 - Wed, Jan 14
STL
Lambert-St. Louis Intl.
ORD
O'Hare Intl.
$137 Roundtrip, found 2 days ago
$137
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jan 7 from Lambert-St. Louis Intl. to O'Hare Intl., returning Wed, Jan 14, priced at $137 found 2 days ago
Wed, Jan 7 - Wed, Jan 14
STL
Lambert-St. Louis Intl.
ORD
O'Hare Intl.
$142 Roundtrip, found 2 days ago
$142
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jan 7 from Lambert-St. Louis Intl. to O'Hare Intl., returning Wed, Jan 14, priced at $142 found 2 days ago
Wed, Jan 7 - Wed, Jan 14
STL
Lambert-St. Louis Intl.
ORD
O'Hare Intl.
$151 Roundtrip, found 2 days ago
$151
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jan 7 from Lambert-St. Louis Intl. to O'Hare Intl., returning Wed, Jan 14, priced at $151 found 2 days ago
Wed, Jan 7 - Wed, Jan 14
STL
Lambert-St. Louis Intl.
ORD
O'Hare Intl.
$159 Roundtrip, found 2 days ago
$159
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jan 7 from Lambert-St. Louis Intl. to O'Hare Intl., returning Wed, Jan 14, priced at $159 found 2 days ago

Frequently asked questions

What route does flight number UA1156 take?
UA1156 is used on multiple routes, but the most common is between IAD and Newark Airport. If your flight goes direct, you'll disembark the plane in roughly 1 hour and 19 minutes. Multi-stop flights can also use this number, as can flights on other routes.
How often is UA1156 on time?
Meeting a special someone at the airport? If you're taking to the skies with United Airlines flight number UA1156 from IAD to Liberty Intl. Airport (EWR), this service runs according to schedule 87% of the time. On the rare instance it is delayed, the average time you'll wait is 35 minutes. One of the many reasons that this journey has a 2.75-star rating.
What kind of plane is on flight number UA1156?
If you've booked a ticket on flight UA1156 from Washington Dulles Intl. Airport (IAD) to Newark, NJ Airport (EWR-Liberty Intl.), there's a good chance you'll be jetting off on a Boeing 737-900. This flight number serves many routes, but this is the most common one.
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 UA1156 flight with Travelocity, please visit our Customer Service Portal.