United Flight 3640 Deals & Information (2026/2027)

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United Flight 3640 Route Deals From $176

The cheapest prices found with in the last 7 days for return flights were $293 and $176 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jun 3 - Sat, Jun 6
ROC
Greater Rochester Intl.
ORD
O'Hare Intl.
$293 Roundtrip, found 3 days ago
$293
Roundtrip
found 3 days ago
Select United flight, departing Wed, Jun 3 from Greater Rochester Intl. to O'Hare Intl., returning Sat, Jun 6, priced at $293 found 3 days ago
Wed, Jun 3 - Sat, Jun 6
ROC
Greater Rochester Intl.
ORD
O'Hare Intl.
$316 Roundtrip, found 3 days ago
$316
Roundtrip
found 3 days ago
Select United flight, departing Wed, Jun 3 from Greater Rochester Intl. to O'Hare Intl., returning Sat, Jun 6, priced at $316 found 3 days ago
Wed, Jun 3 - Sat, Jun 6
ROC
Greater Rochester Intl.
ORD
O'Hare Intl.
$326 Roundtrip, found 3 days ago
$326
Roundtrip
found 3 days ago
Select United flight, departing Wed, Jun 3 from Greater Rochester Intl. to O'Hare Intl., returning Sat, Jun 6, priced at $326 found 3 days ago
Thu, May 21 - Tue, May 26
ROC
Greater Rochester Intl.
ORD
O'Hare Intl.
$353 Roundtrip, found 3 days ago
$353
Roundtrip
found 3 days ago
Select United flight, departing Thu, May 21 from Greater Rochester Intl. to O'Hare Intl., returning Tue, May 26, priced at $353 found 3 days ago
Thu, Jun 4 - Fri, Jun 5
ROC
Greater Rochester Intl.
ORD
O'Hare Intl.
$366 Roundtrip, found 2 days ago
$366
Roundtrip
found 2 days ago
Select United flight, departing Thu, Jun 4 from Greater Rochester Intl. to O'Hare Intl., returning Fri, Jun 5, priced at $366 found 2 days ago
Sat, May 16 - Tue, May 19
ROC
Greater Rochester Intl.
ORD
O'Hare Intl.
$372 Roundtrip, found 23 hours ago
$372
Roundtrip
found 23 hours ago
Select United flight, departing Sat, May 16 from Greater Rochester Intl. to O'Hare Intl., returning Tue, May 19, priced at $372 found 23 hours ago
Thu, May 21 - Tue, May 26
ROC
Greater Rochester Intl.
ORD
O'Hare Intl.
$376 Roundtrip, found 3 days ago
$376
Roundtrip
found 3 days ago
Select United flight, departing Thu, May 21 from Greater Rochester Intl. to O'Hare Intl., returning Tue, May 26, priced at $376 found 3 days ago
Tue, Jun 9 - Thu, Jun 11
ROC
Greater Rochester Intl.
ORD
O'Hare Intl.
$382 Roundtrip, found 2 hours ago
$382
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Jun 9 from Greater Rochester Intl. to O'Hare Intl., returning Thu, Jun 11, priced at $382 found 2 hours ago
Sat, May 16 - Tue, May 19
ROC
Greater Rochester Intl.
ORD
O'Hare Intl.
$385 Roundtrip, found 23 hours ago
$385
Roundtrip
found 23 hours ago
Select United flight, departing Sat, May 16 from Greater Rochester Intl. to O'Hare Intl., returning Tue, May 19, priced at $385 found 23 hours ago

Frequently asked questions

What route does flight number UA3640 take?
UA3640 travels between O'Hare Intl. Airport (ORD) and Bangor International Airport directly. This trip usually takes 2 hours and 26 minutes.
What terminal does UA3640 fly out of?
UA3640 runs between O'Hare Airport and Bangor International Airport, and passengers traveling on this flight usually jet off from Terminal 2.
What kind of plane is on flight number UA3640?
Get ready to hop on board an Embraer 175 if you've reserved a seat on flight UA3640. Most services from O'Hare Intl. Airport (ORD) to Bangor, ME Airport (BGR-Bangor Intl.) are operated using this kind of plane.
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 UA3640 flight with Travelocity, please visit our Customer Service Portal.