United Flight 3640 Deals & Information (2026/2027)

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United Flight 3640 Route Deals From $145

The cheapest prices found with in the last 7 days for return flights were $264 and $145 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 5 days ago
$264
Roundtrip
found 5 days ago
Select United flight, departing Wed, Sep 23 from Richmond Intl. to O'Hare Intl., returning Fri, Sep 25, priced at $264 found 5 days ago
Mon, Oct 19 - Fri, Oct 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$266 Roundtrip, found 6 days ago
$266
Roundtrip
found 6 days ago
Select United flight, departing Mon, Oct 19 from Richmond Intl. to O'Hare Intl., returning Fri, Oct 23, priced at $266 found 6 days ago
Wed, Sep 16 - Thu, Sep 17
RIC
Richmond Intl.
ORD
O'Hare Intl.
$268 Roundtrip, found 5 days ago
$268
Roundtrip
found 5 days ago
Select United flight, departing Wed, Sep 16 from Richmond Intl. to O'Hare Intl., returning Thu, Sep 17, priced at $268 found 5 days ago
Wed, Sep 23 - Fri, Sep 25
RIC
Richmond Intl.
ORD
O'Hare Intl.
$268 Roundtrip, found 5 days ago
$268
Roundtrip
found 5 days ago
Select United flight, departing Wed, Sep 23 from Richmond Intl. to O'Hare Intl., returning Fri, Sep 25, priced at $268 found 5 days ago
Mon, Oct 19 - Fri, Oct 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$275 Roundtrip, found 6 days ago
$275
Roundtrip
found 6 days ago
Select United flight, departing Mon, Oct 19 from Richmond Intl. to O'Hare Intl., returning Fri, Oct 23, priced at $275 found 6 days ago
Wed, Sep 16 - Thu, Sep 17
RIC
Richmond Intl.
ORD
O'Hare Intl.
$281 Roundtrip, found 5 days ago
$281
Roundtrip
found 5 days ago
Select United flight, departing Wed, Sep 16 from Richmond Intl. to O'Hare Intl., returning Thu, Sep 17, priced at $281 found 5 days ago
Thu, Dec 10 - Tue, Dec 15
RIC
Richmond Intl.
ORD
O'Hare Intl.
$383 Roundtrip, found 1 hour ago
$383
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Dec 10 from Richmond Intl. to O'Hare Intl., returning Tue, Dec 15, priced at $383 found 1 hour ago
Sat, Nov 21 - Mon, Nov 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$388 Roundtrip, found 1 day ago
$388
Roundtrip
found 1 day ago
Select United flight, departing Sat, Nov 21 from Richmond Intl. to O'Hare Intl., returning Mon, Nov 23, priced at $388 found 1 day ago
Sat, Nov 21 - Mon, Nov 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$398 Roundtrip, found 1 day ago
$398
Roundtrip
found 1 day ago
Select United flight, departing Sat, Nov 21 from Richmond Intl. to O'Hare Intl., returning Mon, Nov 23, priced at $398 found 1 day ago
Sat, Nov 21 - Mon, Nov 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$399 Roundtrip, found 1 day ago
$399
Roundtrip
found 1 day ago
Select United flight, departing Sat, Nov 21 from Richmond Intl. to O'Hare Intl., returning Mon, Nov 23, priced at $399 found 1 day ago
Thu, Dec 10 - Tue, Dec 15
RIC
Richmond Intl.
ORD
O'Hare Intl.
$405 Roundtrip, found 1 hour ago
$405
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Dec 10 from Richmond Intl. to O'Hare Intl., returning Tue, Dec 15, priced at $405 found 1 hour ago
Thu, Sep 24 - Mon, Sep 28
RIC
Richmond Intl.
ORD
O'Hare Intl.
$406 Roundtrip, found 2 days ago
$406
Roundtrip
found 2 days ago
Select United flight, departing Thu, Sep 24 from Richmond Intl. to O'Hare Intl., returning Mon, Sep 28, priced at $406 found 2 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.