United Flight 3640 Deals & Information (2026/2027)

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United Flight 3640 Route Deals From $135

The cheapest prices found with in the last 7 days for return flights were $297 and $135 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Oct 22 - Mon, Oct 26
RIC
Richmond Intl.
ORD
O'Hare Intl.
$297 Roundtrip, found 2 hours ago
$297
Roundtrip
found 2 hours ago
Select United flight, departing Thu, Oct 22 from Richmond Intl. to O'Hare Intl., returning Mon, Oct 26, priced at $297 found 2 hours ago
Thu, Oct 22 - Mon, Oct 26
RIC
Richmond Intl.
ORD
O'Hare Intl.
$301 Roundtrip, found 2 hours ago
$301
Roundtrip
found 2 hours ago
Select United flight, departing Thu, Oct 22 from Richmond Intl. to O'Hare Intl., returning Mon, Oct 26, priced at $301 found 2 hours ago
Thu, Oct 22 - Mon, Oct 26
RIC
Richmond Intl.
ORD
O'Hare Intl.
$307 Roundtrip, found 2 hours ago
$307
Roundtrip
found 2 hours ago
Select United flight, departing Thu, Oct 22 from Richmond Intl. to O'Hare Intl., returning Mon, Oct 26, priced at $307 found 2 hours ago
Thu, Oct 22 - Mon, Oct 26
RIC
Richmond Intl.
ORD
O'Hare Intl.
$311 Roundtrip, found 2 hours ago
$311
Roundtrip
found 2 hours ago
Select United flight, departing Thu, Oct 22 from Richmond Intl. to O'Hare Intl., returning Mon, Oct 26, priced at $311 found 2 hours ago
Wed, Nov 4 - Fri, Nov 6
RIC
Richmond Intl.
ORD
O'Hare Intl.
$313 Roundtrip, found 1 hour ago
$313
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Nov 4 from Richmond Intl. to O'Hare Intl., returning Fri, Nov 6, priced at $313 found 1 hour ago
Mon, Nov 23 - Wed, Nov 25
RIC
Richmond Intl.
ORD
O'Hare Intl.
$318 Roundtrip, found 4 hours ago
$318
Roundtrip
found 4 hours ago
Select United flight, departing Mon, Nov 23 from Richmond Intl. to O'Hare Intl., returning Wed, Nov 25, priced at $318 found 4 hours ago
Mon, Oct 19 - Thu, Oct 22
RIC
Richmond Intl.
ORD
O'Hare Intl.
$321 Roundtrip, found 4 days ago
$321
Roundtrip
found 4 days ago
Select United flight, departing Mon, Oct 19 from Richmond Intl. to O'Hare Intl., returning Thu, Oct 22, priced at $321 found 4 days ago
Wed, Nov 4 - Fri, Nov 6
RIC
Richmond Intl.
ORD
O'Hare Intl.
$323 Roundtrip, found 1 hour ago
$323
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Nov 4 from Richmond Intl. to O'Hare Intl., returning Fri, Nov 6, priced at $323 found 1 hour ago
Thu, Oct 22 - Mon, Oct 26
RIC
Richmond Intl.
ORD
O'Hare Intl.
$324 Roundtrip, found 2 hours ago
$324
Roundtrip
found 2 hours ago
Select United flight, departing Thu, Oct 22 from Richmond Intl. to O'Hare Intl., returning Mon, Oct 26, priced at $324 found 2 hours ago
Fri, Jan 22 - Sat, Jan 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$326 Roundtrip, found 3 hours ago
$326
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Jan 22 from Richmond Intl. to O'Hare Intl., returning Sat, Jan 23, priced at $326 found 3 hours ago
Thu, Oct 22 - Mon, Oct 26
RIC
Richmond Intl.
ORD
O'Hare Intl.
$327 Roundtrip, found 2 hours ago
$327
Roundtrip
found 2 hours ago
Select United flight, departing Thu, Oct 22 from Richmond Intl. to O'Hare Intl., returning Mon, Oct 26, priced at $327 found 2 hours ago
Thu, Oct 22 - Mon, Oct 26
RIC
Richmond Intl.
ORD
O'Hare Intl.
$330 Roundtrip, found 2 hours ago
$330
Roundtrip
found 2 hours ago
Select United flight, departing Thu, Oct 22 from Richmond Intl. to O'Hare Intl., returning Mon, Oct 26, priced at $330 found 2 hours ago
Mon, Oct 19 - Thu, Oct 22
RIC
Richmond Intl.
ORD
O'Hare Intl.
$331 Roundtrip, found 4 days ago
$331
Roundtrip
found 4 days ago
Select United flight, departing Mon, Oct 19 from Richmond Intl. to O'Hare Intl., returning Thu, Oct 22, priced at $331 found 4 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.