United Flight 3640 Deals & Information (2026/2027)

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United Flight 3640 Route Deals From $157

The cheapest prices found with in the last 7 days for return flights were $264 and $157 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Sep 23 - Fri, Sep 25
RIC
Richmond Intl.
ORD
O'Hare Intl.
$264 Roundtrip, found 6 days ago
$264
Roundtrip
found 6 days ago
Select United flight, departing Wed, Sep 23 from Richmond Intl. to O'Hare Intl., returning Fri, Sep 25, priced at $264 found 6 days ago
Wed, Sep 16 - Thu, Sep 17
RIC
Richmond Intl.
ORD
O'Hare Intl.
$268 Roundtrip, found 6 days ago
$268
Roundtrip
found 6 days ago
Select United flight, departing Wed, Sep 16 from Richmond Intl. to O'Hare Intl., returning Thu, Sep 17, priced at $268 found 6 days ago
Wed, Sep 23 - Fri, Sep 25
RIC
Richmond Intl.
ORD
O'Hare Intl.
$268 Roundtrip, found 6 days ago
$268
Roundtrip
found 6 days ago
Select United flight, departing Wed, Sep 23 from Richmond Intl. to O'Hare Intl., returning Fri, Sep 25, priced at $268 found 6 days ago
Wed, Sep 16 - Thu, Sep 17
RIC
Richmond Intl.
ORD
O'Hare Intl.
$281 Roundtrip, found 6 days ago
$281
Roundtrip
found 6 days ago
Select United flight, departing Wed, Sep 16 from Richmond Intl. to O'Hare Intl., returning Thu, Sep 17, priced at $281 found 6 days ago
Fri, Jan 22 - Sat, Jan 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$333 Roundtrip, found 8 hours ago
$333
Roundtrip
found 8 hours ago
Select United flight, departing Fri, Jan 22 from Richmond Intl. to O'Hare Intl., returning Sat, Jan 23, priced at $333 found 8 hours ago
Sat, Nov 14 - Mon, Nov 16
RIC
Richmond Intl.
ORD
O'Hare Intl.
$345 Roundtrip, found 13 hours ago
$345
Roundtrip
found 13 hours ago
Select United flight, departing Sat, Nov 14 from Richmond Intl. to O'Hare Intl., returning Mon, Nov 16, priced at $345 found 13 hours ago
Sat, Dec 5 - Mon, Dec 7
RIC
Richmond Intl.
ORD
O'Hare Intl.
$347 Roundtrip, found 20 hours ago
$347
Roundtrip
found 20 hours ago
Select United flight, departing Sat, Dec 5 from Richmond Intl. to O'Hare Intl., returning Mon, Dec 7, priced at $347 found 20 hours ago
Tue, Sep 22 - Thu, Sep 24
RIC
Richmond Intl.
ORD
O'Hare Intl.
$350 Roundtrip, just found
$350
Roundtrip
just found
Select United flight, departing Tue, Sep 22 from Richmond Intl. to O'Hare Intl., returning Thu, Sep 24, priced at $350 just found
Wed, Oct 14 - Sat, Oct 17
RIC
Richmond Intl.
ORD
O'Hare Intl.
$353 Roundtrip, found 2 hours ago
$353
Roundtrip
found 2 hours ago
Select United flight, departing Wed, Oct 14 from Richmond Intl. to O'Hare Intl., returning Sat, Oct 17, priced at $353 found 2 hours ago
Fri, Jan 22 - Sat, Jan 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$355 Roundtrip, found 8 hours ago
$355
Roundtrip
found 8 hours ago
Select United flight, departing Fri, Jan 22 from Richmond Intl. to O'Hare Intl., returning Sat, Jan 23, priced at $355 found 8 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.