United Flight 3665 Deals & Information (2025/2026)

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United Flight 3665 Route Deals From $39

The cheapest prices found with in the last 7 days for return flights were $86 and $39 for one-way flights to Gerald R. Ford Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Oct 31 - Mon, Nov 3
ORD
O'Hare Intl.
GRR
Gerald R. Ford Intl.
$86 Roundtrip, found 15 hours ago
$86
Roundtrip
found 15 hours ago
Select United flight, departing Fri, Oct 31 from O'Hare Intl. to Gerald R. Ford Intl., returning Mon, Nov 3, priced at $86 found 15 hours ago
Wed, Oct 29 - Thu, Oct 30
ORD
O'Hare Intl.
GRR
Gerald R. Ford Intl.
$90 Roundtrip, found 3 days ago
$90
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 29 from O'Hare Intl. to Gerald R. Ford Intl., returning Thu, Oct 30, priced at $90 found 3 days ago
Wed, Oct 29 - Thu, Oct 30
ORD
O'Hare Intl.
GRR
Gerald R. Ford Intl.
$94 Roundtrip, found 3 days ago
$94
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 29 from O'Hare Intl. to Gerald R. Ford Intl., returning Thu, Oct 30, priced at $94 found 3 days ago
Fri, Oct 31 - Mon, Nov 3
ORD
O'Hare Intl.
GRR
Gerald R. Ford Intl.
$103 Roundtrip, found 15 hours ago
$103
Roundtrip
found 15 hours ago
Select United flight, departing Fri, Oct 31 from O'Hare Intl. to Gerald R. Ford Intl., returning Mon, Nov 3, priced at $103 found 15 hours ago
Wed, Oct 29 - Thu, Oct 30
ORD
O'Hare Intl.
GRR
Gerald R. Ford Intl.
$121 Roundtrip, found 3 days ago
$121
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 29 from O'Hare Intl. to Gerald R. Ford Intl., returning Thu, Oct 30, priced at $121 found 3 days ago
Fri, Oct 31 - Mon, Nov 3
ORD
O'Hare Intl.
GRR
Gerald R. Ford Intl.
$123 Roundtrip, found 15 hours ago
$123
Roundtrip
found 15 hours ago
Select United flight, departing Fri, Oct 31 from O'Hare Intl. to Gerald R. Ford Intl., returning Mon, Nov 3, priced at $123 found 15 hours ago
Wed, Oct 29 - Thu, Oct 30
ORD
O'Hare Intl.
GRR
Gerald R. Ford Intl.
$124 Roundtrip, found 3 days ago
$124
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 29 from O'Hare Intl. to Gerald R. Ford Intl., returning Thu, Oct 30, priced at $124 found 3 days ago
Wed, Oct 29 - Thu, Oct 30
ORD
O'Hare Intl.
GRR
Gerald R. Ford Intl.
$139 Roundtrip, found 3 days ago
$139
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 29 from O'Hare Intl. to Gerald R. Ford Intl., returning Thu, Oct 30, priced at $139 found 3 days ago
Fri, Oct 31 - Mon, Nov 3
ORD
O'Hare Intl.
GRR
Gerald R. Ford Intl.
$143 Roundtrip, found 15 hours ago
$143
Roundtrip
found 15 hours ago
Select United flight, departing Fri, Oct 31 from O'Hare Intl. to Gerald R. Ford Intl., returning Mon, Nov 3, priced at $143 found 15 hours ago
Fri, Oct 31 - Mon, Nov 3
ORD
O'Hare Intl.
GRR
Gerald R. Ford Intl.
$147 Roundtrip, found 15 hours ago
$147
Roundtrip
found 15 hours ago
Select United flight, departing Fri, Oct 31 from O'Hare Intl. to Gerald R. Ford Intl., returning Mon, Nov 3, priced at $147 found 15 hours ago

Frequently asked questions

What route does flight number UA3665 take?
UA3665 is used on a range of routes. Most commonly, UA3665 flies direct from ORD to Kansas City, MO Airport (MCI-Kansas City Intl.). If that's your flight path, you'll be flying for around 1 hour and 41 minutes.
What terminal does UA3665 fly out of?
Terminal 2 is the terminal you'll likely take off from if you're booked on a flight from O'Hare Airport. ORD to Kansas City, MO Airport (MCI-Kansas City Intl.) is the most commonly traveled route for flight number UA3665.
What kind of plane is on flight number UA3665?
UA3665 is a flight number that serves several routes. If you're heading off on the most popular route, O'Hare Airport to Kansas City, MO Airport (MCI-Kansas City Intl.), there's a good chance you'll be climbing on board an Embraer 170.
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 UA3665 flight with Travelocity, please visit our Customer Service Portal.