United Flight UA661 Deals & Information (2025/2026)

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United Flight 661 Route Deals From $69

The cheapest prices found with in the last 7 days for return flights were $120 and $69 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Dec 24 - Wed, Jan 7
EWR
Newark Liberty Intl. Airport
ORD
O'Hare Intl.
$120 Roundtrip, found 1 day ago
$120
Roundtrip
found 1 day ago
Select United flight, departing Wed, Dec 24 from Newark Liberty Intl. Airport to O'Hare Intl., returning Wed, Jan 7, priced at $120 found 1 day ago
Thu, Nov 6 - Sat, Nov 8
EWR
Newark Liberty Intl. Airport
ORD
O'Hare Intl.
$120 Roundtrip, just found
$120
Roundtrip
just found
Select United flight, departing Thu, Nov 6 from Newark Liberty Intl. Airport to O'Hare Intl., returning Sat, Nov 8, priced at $120 just found
Sat, Nov 15 - Mon, Nov 17
EWR
Newark Liberty Intl. Airport
ORD
O'Hare Intl.
$130 Roundtrip, just found
$130
Roundtrip
just found
Select United flight, departing Sat, Nov 15 from Newark Liberty Intl. Airport to O'Hare Intl., returning Mon, Nov 17, priced at $130 just found
Sat, Nov 15 - Mon, Nov 17
EWR
Newark Liberty Intl. Airport
ORD
O'Hare Intl.
$140 Roundtrip, just found
$140
Roundtrip
just found
Select United flight, departing Sat, Nov 15 from Newark Liberty Intl. Airport to O'Hare Intl., returning Mon, Nov 17, priced at $140 just found
Sat, Jan 17 - Mon, Jan 19
EWR
Newark Liberty Intl. Airport
ORD
O'Hare Intl.
$146 Roundtrip, found 5 hours ago
$146
Roundtrip
found 5 hours ago
Select United flight, departing Sat, Jan 17 from Newark Liberty Intl. Airport to O'Hare Intl., returning Mon, Jan 19, priced at $146 found 5 hours ago
Wed, Oct 29 - Thu, Oct 30
EWR
Newark Liberty Intl. Airport
ORD
O'Hare Intl.
$148 Roundtrip, found 1 hour ago
$148
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Oct 29 from Newark Liberty Intl. Airport to O'Hare Intl., returning Thu, Oct 30, priced at $148 found 1 hour ago
Wed, Oct 29 - Thu, Oct 30
EWR
Newark Liberty Intl. Airport
ORD
O'Hare Intl.
$149 Roundtrip, found 1 hour ago
$149
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Oct 29 from Newark Liberty Intl. Airport to O'Hare Intl., returning Thu, Oct 30, priced at $149 found 1 hour ago
Thu, Oct 23 - Fri, Oct 24
EWR
Newark Liberty Intl. Airport
ORD
O'Hare Intl.
$152 Roundtrip, found 3 days ago
$152
Roundtrip
found 3 days ago
Select United flight, departing Thu, Oct 23 from Newark Liberty Intl. Airport to O'Hare Intl., returning Fri, Oct 24, priced at $152 found 3 days 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.