United Flight 661 Deals & Information (2025/2026)

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United Flight 661 Route Deals From $101

The cheapest prices found with in the last 7 days for return flights were $130 and $101 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, May 13 - Wed, May 14
EWR
Newark Liberty Intl. Airport
ORD
O'Hare Intl.
$130 Roundtrip, found 5 hours ago
$130
Roundtrip
found 5 hours ago
Select United flight, departing Tue, May 13 from Newark Liberty Intl. Airport to O'Hare Intl., returning Wed, May 14, priced at $130 found 5 hours ago
Tue, May 13 - Wed, May 14
EWR
Newark Liberty Intl. Airport
ORD
O'Hare Intl.
$159 Roundtrip, found 5 hours ago
$159
Roundtrip
found 5 hours ago
Select United flight, departing Tue, May 13 from Newark Liberty Intl. Airport to O'Hare Intl., returning Wed, May 14, priced at $159 found 5 hours ago

Frequently asked questions

What route does flight number UA661 take?
UA661 takes a few routes. The most popular is between Raleigh–Durham Airport and DIA airport, which flies direct. This flight takes roughly 3 hours and 45 minutes. That said, there may possibly be other flights with this number that have one or more stops.
What terminal does UA661 fly out of?
If you’re leaving from Raleigh–Durham Airport, you’ll probably board the aircraft from Terminal 2. The most traveled route for UA661 is Raleigh, NC Airport (RDU-Raleigh - Durham Intl.) to Denver Intl. Airport (DEN), which is a nonstop flight.
What kind of plane is on flight number UA661?
UA661 is a flight number that is used on many routes. If you have a ticket on the most common route, Raleigh, NC Airport (RDU-Raleigh - Durham Intl.) to DEN, you’ll probably be boarding an Airbus A319.
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 UA661 flight with Travelocity, please visit our Customer Service Portal.