United Flight 3640 Deals & Information (2026/2027)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

United Flight 3640 Route Deals From $136

The cheapest prices found with in the last 7 days for return flights were $271 and $136 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Dec 19 - Tue, Jan 5
RIC
Richmond Intl.
ORD
O'Hare Intl.
$271 Roundtrip, found 3 hours ago
$271
Roundtrip
found 3 hours ago
Select United flight, departing Sat, Dec 19 from Richmond Intl. to O'Hare Intl., returning Tue, Jan 5, priced at $271 found 3 hours ago
Sat, Dec 19 - Tue, Jan 5
RIC
Richmond Intl.
ORD
O'Hare Intl.
$281 Roundtrip, found 3 hours ago
$281
Roundtrip
found 3 hours ago
Select United flight, departing Sat, Dec 19 from Richmond Intl. to O'Hare Intl., returning Tue, Jan 5, priced at $281 found 3 hours ago
Sat, Nov 21 - Mon, Nov 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$284 Roundtrip, found 4 hours ago
$284
Roundtrip
found 4 hours ago
Select United flight, departing Sat, Nov 21 from Richmond Intl. to O'Hare Intl., returning Mon, Nov 23, priced at $284 found 4 hours ago
Sat, Nov 21 - Mon, Nov 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$294 Roundtrip, found 4 hours ago
$294
Roundtrip
found 4 hours ago
Select United flight, departing Sat, Nov 21 from Richmond Intl. to O'Hare Intl., returning Mon, Nov 23, priced at $294 found 4 hours ago
Fri, Jan 22 - Sat, Jan 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$304 Roundtrip, found 14 hours ago
$304
Roundtrip
found 14 hours ago
Select United flight, departing Fri, Jan 22 from Richmond Intl. to O'Hare Intl., returning Sat, Jan 23, priced at $304 found 14 hours ago
Fri, Jan 22 - Sat, Jan 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$308 Roundtrip, found 14 hours ago
$308
Roundtrip
found 14 hours ago
Select United flight, departing Fri, Jan 22 from Richmond Intl. to O'Hare Intl., returning Sat, Jan 23, priced at $308 found 14 hours ago
Sat, Nov 21 - Mon, Nov 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$310 Roundtrip, found 4 hours ago
$310
Roundtrip
found 4 hours ago
Select United flight, departing Sat, Nov 21 from Richmond Intl. to O'Hare Intl., returning Mon, Nov 23, priced at $310 found 4 hours ago
Sat, Nov 21 - Mon, Nov 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$311 Roundtrip, found 4 hours ago
$311
Roundtrip
found 4 hours ago
Select United flight, departing Sat, Nov 21 from Richmond Intl. to O'Hare Intl., returning Mon, Nov 23, priced at $311 found 4 hours ago
Sat, Nov 21 - Mon, Nov 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$314 Roundtrip, found 4 hours ago
$314
Roundtrip
found 4 hours ago
Select United flight, departing Sat, Nov 21 from Richmond Intl. to O'Hare Intl., returning Mon, Nov 23, priced at $314 found 4 hours ago
Sat, Nov 21 - Mon, Nov 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$314 Roundtrip, found 4 hours ago
$314
Roundtrip
found 4 hours ago
Select United flight, departing Sat, Nov 21 from Richmond Intl. to O'Hare Intl., returning Mon, Nov 23, priced at $314 found 4 hours ago
Sat, Nov 21 - Mon, Nov 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$316 Roundtrip, found 4 hours ago
$316
Roundtrip
found 4 hours ago
Select United flight, departing Sat, Nov 21 from Richmond Intl. to O'Hare Intl., returning Mon, Nov 23, priced at $316 found 4 hours ago
Fri, Jan 22 - Sat, Jan 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$317 Roundtrip, found 14 hours ago
$317
Roundtrip
found 14 hours ago
Select United flight, departing Fri, Jan 22 from Richmond Intl. to O'Hare Intl., returning Sat, Jan 23, priced at $317 found 14 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.