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 $149

The cheapest prices found with in the last 7 days for return flights were $259 and $149 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Nov 3 - Sat, Nov 7
RIC
Richmond Intl.
ORD
O'Hare Intl.
$259 Roundtrip, found 6 days ago
$259
Roundtrip
found 6 days ago
Select United flight, departing Tue, Nov 3 from Richmond Intl. to O'Hare Intl., returning Sat, Nov 7, priced at $259 found 6 days ago
Wed, Nov 11 - Tue, Nov 17
RIC
Richmond Intl.
ORD
O'Hare Intl.
$283 Roundtrip, found 6 days ago
$283
Roundtrip
found 6 days ago
Select United flight, departing Wed, Nov 11 from Richmond Intl. to O'Hare Intl., returning Tue, Nov 17, priced at $283 found 6 days ago
Tue, Nov 3 - Sat, Nov 7
RIC
Richmond Intl.
ORD
O'Hare Intl.
$287 Roundtrip, found 6 days ago
$287
Roundtrip
found 6 days ago
Select United flight, departing Tue, Nov 3 from Richmond Intl. to O'Hare Intl., returning Sat, Nov 7, priced at $287 found 6 days ago
Wed, Nov 11 - Tue, Nov 17
RIC
Richmond Intl.
ORD
O'Hare Intl.
$293 Roundtrip, found 6 days ago
$293
Roundtrip
found 6 days ago
Select United flight, departing Wed, Nov 11 from Richmond Intl. to O'Hare Intl., returning Tue, Nov 17, priced at $293 found 6 days ago
Thu, Feb 4 - Tue, Feb 9
RIC
Richmond Intl.
ORD
O'Hare Intl.
$310 Roundtrip, found 3 days ago
$310
Roundtrip
found 3 days ago
Select United flight, departing Thu, Feb 4 from Richmond Intl. to O'Hare Intl., returning Tue, Feb 9, priced at $310 found 3 days ago
Wed, Nov 18 - Tue, Dec 1
RIC
Richmond Intl.
ORD
O'Hare Intl.
$314 Roundtrip, found 19 hours ago
$314
Roundtrip
found 19 hours ago
Select United flight, departing Wed, Nov 18 from Richmond Intl. to O'Hare Intl., returning Tue, Dec 1, priced at $314 found 19 hours ago
Tue, Dec 15 - Fri, Jan 8
RIC
Richmond Intl.
ORD
O'Hare Intl.
$317 Roundtrip, found 1 day ago
$317
Roundtrip
found 1 day ago
Select United flight, departing Tue, Dec 15 from Richmond Intl. to O'Hare Intl., returning Fri, Jan 8, priced at $317 found 1 day ago
Sat, Nov 7 - Mon, Nov 9
RIC
Richmond Intl.
ORD
O'Hare Intl.
$319 Roundtrip, found 23 hours ago
$319
Roundtrip
found 23 hours ago
Select United flight, departing Sat, Nov 7 from Richmond Intl. to O'Hare Intl., returning Mon, Nov 9, priced at $319 found 23 hours ago
Thu, Feb 4 - Tue, Feb 9
RIC
Richmond Intl.
ORD
O'Hare Intl.
$320 Roundtrip, found 3 days ago
$320
Roundtrip
found 3 days ago
Select United flight, departing Thu, Feb 4 from Richmond Intl. to O'Hare Intl., returning Tue, Feb 9, priced at $320 found 3 days ago
Thu, Nov 12 - Sat, Nov 14
RIC
Richmond Intl.
ORD
O'Hare Intl.
$322 Roundtrip, found 14 hours ago
$322
Roundtrip
found 14 hours ago
Select United flight, departing Thu, Nov 12 from Richmond Intl. to O'Hare Intl., returning Sat, Nov 14, priced at $322 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.