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 $297 and $149 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Dec 5 - Mon, Dec 7
RIC
Richmond Intl.
ORD
O'Hare Intl.
$297 Roundtrip, found 12 hours ago
$297
Roundtrip
found 12 hours ago
Select United flight, departing Sat, Dec 5 from Richmond Intl. to O'Hare Intl., returning Mon, Dec 7, priced at $297 found 12 hours ago
Sat, Nov 7 - Mon, Nov 9
RIC
Richmond Intl.
ORD
O'Hare Intl.
$301 Roundtrip, found 20 hours ago
$301
Roundtrip
found 20 hours ago
Select United flight, departing Sat, Nov 7 from Richmond Intl. to O'Hare Intl., returning Mon, Nov 9, priced at $301 found 20 hours ago
Thu, Dec 10 - Sat, Dec 12
RIC
Richmond Intl.
ORD
O'Hare Intl.
$321 Roundtrip, found 2 days ago
$321
Roundtrip
found 2 days ago
Select United flight, departing Thu, Dec 10 from Richmond Intl. to O'Hare Intl., returning Sat, Dec 12, priced at $321 found 2 days ago
Mon, Dec 14 - Mon, Dec 21
RIC
Richmond Intl.
ORD
O'Hare Intl.
$326 Roundtrip, found 20 hours ago
$326
Roundtrip
found 20 hours ago
Select United flight, departing Mon, Dec 14 from Richmond Intl. to O'Hare Intl., returning Mon, Dec 21, priced at $326 found 20 hours ago
Sat, Dec 5 - Mon, Dec 7
RIC
Richmond Intl.
ORD
O'Hare Intl.
$329 Roundtrip, found 12 hours ago
$329
Roundtrip
found 12 hours ago
Select United flight, departing Sat, Dec 5 from Richmond Intl. to O'Hare Intl., returning Mon, Dec 7, priced at $329 found 12 hours ago
Sat, Dec 5 - Mon, Dec 7
RIC
Richmond Intl.
ORD
O'Hare Intl.
$331 Roundtrip, found 12 hours ago
$331
Roundtrip
found 12 hours ago
Select United flight, departing Sat, Dec 5 from Richmond Intl. to O'Hare Intl., returning Mon, Dec 7, priced at $331 found 12 hours ago
Sat, Nov 7 - Mon, Nov 9
RIC
Richmond Intl.
ORD
O'Hare Intl.
$331 Roundtrip, found 20 hours ago
$331
Roundtrip
found 20 hours ago
Select United flight, departing Sat, Nov 7 from Richmond Intl. to O'Hare Intl., returning Mon, Nov 9, priced at $331 found 20 hours ago
Fri, Jan 22 - Sat, Jan 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$334 Roundtrip, found 7 hours ago
$334
Roundtrip
found 7 hours ago
Select United flight, departing Fri, Jan 22 from Richmond Intl. to O'Hare Intl., returning Sat, Jan 23, priced at $334 found 7 hours ago
Wed, Oct 14 - Mon, Oct 19
RIC
Richmond Intl.
ORD
O'Hare Intl.
$335 Roundtrip, found 5 days ago
$335
Roundtrip
found 5 days ago
Select United flight, departing Wed, Oct 14 from Richmond Intl. to O'Hare Intl., returning Mon, Oct 19, priced at $335 found 5 days ago
Mon, Dec 14 - Mon, Dec 21
RIC
Richmond Intl.
ORD
O'Hare Intl.
$336 Roundtrip, found 20 hours ago
$336
Roundtrip
found 20 hours ago
Select United flight, departing Mon, Dec 14 from Richmond Intl. to O'Hare Intl., returning Mon, Dec 21, priced at $336 found 20 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.