United Flight 1100 Deals & Information (2025/2026)

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United Flight 1100 Route Deals From $120

The cheapest prices found with in the last 7 days for return flights were $179 and $120 for one-way flights to Portland Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Aug 31 - Sat, Sep 6
ORD
O'Hare Intl.
PDX
Portland Intl.
$179 Roundtrip, found 1 hour ago
$179
Roundtrip
found 1 hour ago
Select United flight, departing Sun, Aug 31 from O'Hare Intl. to Portland Intl., returning Sat, Sep 6, priced at $179 found 1 hour ago
Sun, Aug 31 - Sat, Sep 6
ORD
O'Hare Intl.
PDX
Portland Intl.
$184 Roundtrip, found 1 hour ago
$184
Roundtrip
found 1 hour ago
Select United flight, departing Sun, Aug 31 from O'Hare Intl. to Portland Intl., returning Sat, Sep 6, priced at $184 found 1 hour ago
Sun, Aug 31 - Sat, Sep 6
ORD
O'Hare Intl.
PDX
Portland Intl.
$198 Roundtrip, found 1 hour ago
$198
Roundtrip
found 1 hour ago
Select United flight, departing Sun, Aug 31 from O'Hare Intl. to Portland Intl., returning Sat, Sep 6, priced at $198 found 1 hour ago

Frequently asked questions

What route does flight number UA1100 take?
UA1100 operates direct from Newark, NJ Airport (EWR-Liberty Intl.) to MIA. During this journey, expect to be in the air for approximately 3 hours and 8 minutes. It's wise to book ahead to lock in your preferred seat.
What terminal does UA1100 fly out of?
Travelers booked on flight number UA1100 from Liberty Intl. Airport (EWR) to Miami, FL Airport (MIA-Miami Intl.) usually fly out of Terminal C.
What kind of plane is on flight number UA1100?
The Boeing 737-900 is the plane predominantly used for flight number UA1100. More often than not, this flight sets off from EWR and lands at Miami, FL Airport (MIA-Miami Intl.).
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 UA1100 flight with Travelocity, please visit our Customer Service Portal.