United Flight 3640 Deals & Information (2026/2027)

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United Flight 3640 Route Deals From $162

The cheapest prices found with in the last 7 days for return flights were $326 and $162 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Oct 24 - Mon, Oct 26
RIC
Richmond Intl.
ORD
O'Hare Intl.
$326 Roundtrip, just found
$326
Roundtrip
just found
Select United flight, departing Sat, Oct 24 from Richmond Intl. to O'Hare Intl., returning Mon, Oct 26, priced at $326 just found
Sat, Oct 24 - Mon, Oct 26
RIC
Richmond Intl.
ORD
O'Hare Intl.
$336 Roundtrip, just found
$336
Roundtrip
just found
Select United flight, departing Sat, Oct 24 from Richmond Intl. to O'Hare Intl., returning Mon, Oct 26, priced at $336 just found
Sat, Oct 24 - Mon, Oct 26
RIC
Richmond Intl.
ORD
O'Hare Intl.
$339 Roundtrip, just found
$339
Roundtrip
just found
Select United flight, departing Sat, Oct 24 from Richmond Intl. to O'Hare Intl., returning Mon, Oct 26, priced at $339 just found
Sat, Oct 24 - Mon, Oct 26
RIC
Richmond Intl.
ORD
O'Hare Intl.
$341 Roundtrip, just found
$341
Roundtrip
just found
Select United flight, departing Sat, Oct 24 from Richmond Intl. to O'Hare Intl., returning Mon, Oct 26, priced at $341 just found
Sat, Nov 14 - Mon, Nov 16
RIC
Richmond Intl.
ORD
O'Hare Intl.
$345 Roundtrip, found 1 day ago
$345
Roundtrip
found 1 day ago
Select United flight, departing Sat, Nov 14 from Richmond Intl. to O'Hare Intl., returning Mon, Nov 16, priced at $345 found 1 day ago
Sat, Dec 5 - Mon, Dec 7
RIC
Richmond Intl.
ORD
O'Hare Intl.
$347 Roundtrip, found 1 day ago
$347
Roundtrip
found 1 day ago
Select United flight, departing Sat, Dec 5 from Richmond Intl. to O'Hare Intl., returning Mon, Dec 7, priced at $347 found 1 day ago
Tue, Sep 22 - Thu, Sep 24
RIC
Richmond Intl.
ORD
O'Hare Intl.
$350 Roundtrip, found 1 day ago
$350
Roundtrip
found 1 day ago
Select United flight, departing Tue, Sep 22 from Richmond Intl. to O'Hare Intl., returning Thu, Sep 24, priced at $350 found 1 day ago
Sat, Dec 5 - Mon, Dec 7
RIC
Richmond Intl.
ORD
O'Hare Intl.
$357 Roundtrip, found 1 day ago
$357
Roundtrip
found 1 day ago
Select United flight, departing Sat, Dec 5 from Richmond Intl. to O'Hare Intl., returning Mon, Dec 7, priced at $357 found 1 day ago
Sat, Dec 5 - Mon, Dec 7
RIC
Richmond Intl.
ORD
O'Hare Intl.
$359 Roundtrip, found 1 day ago
$359
Roundtrip
found 1 day ago
Select United flight, departing Sat, Dec 5 from Richmond Intl. to O'Hare Intl., returning Mon, Dec 7, priced at $359 found 1 day ago
Tue, Sep 22 - Thu, Sep 24
RIC
Richmond Intl.
ORD
O'Hare Intl.
$360 Roundtrip, found 1 day ago
$360
Roundtrip
found 1 day ago
Select United flight, departing Tue, Sep 22 from Richmond Intl. to O'Hare Intl., returning Thu, Sep 24, priced at $360 found 1 day ago
Tue, Sep 22 - Thu, Sep 24
RIC
Richmond Intl.
ORD
O'Hare Intl.
$362 Roundtrip, found 1 day ago
$362
Roundtrip
found 1 day ago
Select United flight, departing Tue, Sep 22 from Richmond Intl. to O'Hare Intl., returning Thu, Sep 24, priced at $362 found 1 day ago
Wed, Oct 7 - Sat, Oct 10
RIC
Richmond Intl.
ORD
O'Hare Intl.
$363 Roundtrip, found 1 day ago
$363
Roundtrip
found 1 day ago
Select United flight, departing Wed, Oct 7 from Richmond Intl. to O'Hare Intl., returning Sat, Oct 10, priced at $363 found 1 day ago
Tue, Sep 22 - Thu, Sep 24
RIC
Richmond Intl.
ORD
O'Hare Intl.
$365 Roundtrip, found 1 day ago
$365
Roundtrip
found 1 day ago
Select United flight, departing Tue, Sep 22 from Richmond Intl. to O'Hare Intl., returning Thu, Sep 24, priced at $365 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.