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 $131

The cheapest prices found with in the last 7 days for return flights were $278 and $131 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Oct 12 - Tue, Oct 13
RIC
Richmond Intl.
ORD
O'Hare Intl.
$278 Roundtrip, found 1 day ago
$278
Roundtrip
found 1 day ago
Select United flight, departing Mon, Oct 12 from Richmond Intl. to O'Hare Intl., returning Tue, Oct 13, priced at $278 found 1 day ago
Mon, Oct 12 - Tue, Oct 13
RIC
Richmond Intl.
ORD
O'Hare Intl.
$282 Roundtrip, found 1 day ago
$282
Roundtrip
found 1 day ago
Select United flight, departing Mon, Oct 12 from Richmond Intl. to O'Hare Intl., returning Tue, Oct 13, priced at $282 found 1 day ago
Sat, Dec 5 - Mon, Dec 7
RIC
Richmond Intl.
ORD
O'Hare Intl.
$287 Roundtrip, found 9 hours ago
$287
Roundtrip
found 9 hours ago
Select United flight, departing Sat, Dec 5 from Richmond Intl. to O'Hare Intl., returning Mon, Dec 7, priced at $287 found 9 hours ago
Thu, Oct 8 - Sat, Oct 10
RIC
Richmond Intl.
ORD
O'Hare Intl.
$291 Roundtrip, found 13 hours ago
$291
Roundtrip
found 13 hours ago
Select United flight, departing Thu, Oct 8 from Richmond Intl. to O'Hare Intl., returning Sat, Oct 10, priced at $291 found 13 hours ago
Sat, Dec 5 - Mon, Dec 7
RIC
Richmond Intl.
ORD
O'Hare Intl.
$297 Roundtrip, found 9 hours ago
$297
Roundtrip
found 9 hours ago
Select United flight, departing Sat, Dec 5 from Richmond Intl. to O'Hare Intl., returning Mon, Dec 7, priced at $297 found 9 hours ago
Thu, Oct 22 - Mon, Oct 26
RIC
Richmond Intl.
ORD
O'Hare Intl.
$307 Roundtrip, found 2 days ago
$307
Roundtrip
found 2 days ago
Select United flight, departing Thu, Oct 22 from Richmond Intl. to O'Hare Intl., returning Mon, Oct 26, priced at $307 found 2 days ago
Sat, Dec 5 - Mon, Dec 7
RIC
Richmond Intl.
ORD
O'Hare Intl.
$309 Roundtrip, found 9 hours ago
$309
Roundtrip
found 9 hours ago
Select United flight, departing Sat, Dec 5 from Richmond Intl. to O'Hare Intl., returning Mon, Dec 7, priced at $309 found 9 hours ago
Fri, Oct 9 - Tue, Oct 13
RIC
Richmond Intl.
ORD
O'Hare Intl.
$313 Roundtrip, found 12 hours ago
$313
Roundtrip
found 12 hours ago
Select United flight, departing Fri, Oct 9 from Richmond Intl. to O'Hare Intl., returning Tue, Oct 13, priced at $313 found 12 hours ago
Thu, Dec 10 - Mon, Dec 14
RIC
Richmond Intl.
ORD
O'Hare Intl.
$315 Roundtrip, found 6 hours ago
$315
Roundtrip
found 6 hours ago
Select United flight, departing Thu, Dec 10 from Richmond Intl. to O'Hare Intl., returning Mon, Dec 14, priced at $315 found 6 hours ago
Mon, Oct 19 - Thu, Oct 22
RIC
Richmond Intl.
ORD
O'Hare Intl.
$321 Roundtrip, found 6 days ago
$321
Roundtrip
found 6 days ago
Select United flight, departing Mon, Oct 19 from Richmond Intl. to O'Hare Intl., returning Thu, Oct 22, priced at $321 found 6 days 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.