United Flight 3640 Deals & Information (2026/2027)

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United Flight 3640 Route Deals From $150

The cheapest prices found with in the last 7 days for return flights were $287 and $150 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Nov 26 - Tue, Dec 1
RIC
Richmond Intl.
ORD
O'Hare Intl.
$287 Roundtrip, found 6 days ago
$287
Roundtrip
found 6 days ago
Select United flight, departing Thu, Nov 26 from Richmond Intl. to O'Hare Intl., returning Tue, Dec 1, priced at $287 found 6 days ago
Thu, Nov 26 - Tue, Dec 1
RIC
Richmond Intl.
ORD
O'Hare Intl.
$297 Roundtrip, found 6 days ago
$297
Roundtrip
found 6 days ago
Select United flight, departing Thu, Nov 26 from Richmond Intl. to O'Hare Intl., returning Tue, Dec 1, priced at $297 found 6 days ago
Thu, Nov 26 - Tue, Dec 1
RIC
Richmond Intl.
ORD
O'Hare Intl.
$310 Roundtrip, found 6 days ago
$310
Roundtrip
found 6 days ago
Select United flight, departing Thu, Nov 26 from Richmond Intl. to O'Hare Intl., returning Tue, Dec 1, priced at $310 found 6 days ago
Thu, Dec 3 - Sat, Dec 5
RIC
Richmond Intl.
ORD
O'Hare Intl.
$321 Roundtrip, found 5 days ago
$321
Roundtrip
found 5 days ago
Select United flight, departing Thu, Dec 3 from Richmond Intl. to O'Hare Intl., returning Sat, Dec 5, priced at $321 found 5 days ago
Sat, Dec 5 - Mon, Dec 7
RIC
Richmond Intl.
ORD
O'Hare Intl.
$325 Roundtrip, found 2 days ago
$325
Roundtrip
found 2 days ago
Select United flight, departing Sat, Dec 5 from Richmond Intl. to O'Hare Intl., returning Mon, Dec 7, priced at $325 found 2 days ago
Wed, Oct 14 - Thu, Oct 15
RIC
Richmond Intl.
ORD
O'Hare Intl.
$331 Roundtrip, found 1 day ago
$331
Roundtrip
found 1 day ago
Select United flight, departing Wed, Oct 14 from Richmond Intl. to O'Hare Intl., returning Thu, Oct 15, priced at $331 found 1 day ago
Fri, Jan 22 - Sat, Jan 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$332 Roundtrip, found 1 day ago
$332
Roundtrip
found 1 day ago
Select United flight, departing Fri, Jan 22 from Richmond Intl. to O'Hare Intl., returning Sat, Jan 23, priced at $332 found 1 day ago
Fri, Oct 16 - Mon, Oct 19
RIC
Richmond Intl.
ORD
O'Hare Intl.
$333 Roundtrip, found 6 hours ago
$333
Roundtrip
found 6 hours ago
Select United flight, departing Fri, Oct 16 from Richmond Intl. to O'Hare Intl., returning Mon, Oct 19, priced at $333 found 6 hours ago
Wed, Oct 14 - Mon, Oct 19
RIC
Richmond Intl.
ORD
O'Hare Intl.
$335 Roundtrip, found 9 hours ago
$335
Roundtrip
found 9 hours ago
Select United flight, departing Wed, Oct 14 from Richmond Intl. to O'Hare Intl., returning Mon, Oct 19, priced at $335 found 9 hours ago
Wed, Oct 14 - Thu, Oct 15
RIC
Richmond Intl.
ORD
O'Hare Intl.
$339 Roundtrip, found 1 day ago
$339
Roundtrip
found 1 day ago
Select United flight, departing Wed, Oct 14 from Richmond Intl. to O'Hare Intl., returning Thu, Oct 15, priced at $339 found 1 day 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.