United Flight 3640 Deals & Information (2026/2027)

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United Flight 3640 Route Deals From $119

The cheapest prices found with in the last 7 days for return flights were $237 and $119 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Sep 17 - Mon, Sep 21
RIC
Richmond Intl.
ORD
O'Hare Intl.
$237 Roundtrip, found 3 hours ago
$237
Roundtrip
found 3 hours ago
Select United flight, departing Thu, Sep 17 from Richmond Intl. to O'Hare Intl., returning Mon, Sep 21, priced at $237 found 3 hours ago
Thu, Sep 17 - Mon, Sep 21
RIC
Richmond Intl.
ORD
O'Hare Intl.
$241 Roundtrip, found 3 hours ago
$241
Roundtrip
found 3 hours ago
Select United flight, departing Thu, Sep 17 from Richmond Intl. to O'Hare Intl., returning Mon, Sep 21, priced at $241 found 3 hours ago
Thu, Sep 17 - Mon, Sep 21
RIC
Richmond Intl.
ORD
O'Hare Intl.
$258 Roundtrip, found 3 hours ago
$258
Roundtrip
found 3 hours ago
Select United flight, departing Thu, Sep 17 from Richmond Intl. to O'Hare Intl., returning Mon, Sep 21, priced at $258 found 3 hours ago
Thu, Nov 5 - Sat, Nov 7
RIC
Richmond Intl.
ORD
O'Hare Intl.
$260 Roundtrip, found 6 days ago
$260
Roundtrip
found 6 days ago
Select United flight, departing Thu, Nov 5 from Richmond Intl. to O'Hare Intl., returning Sat, Nov 7, priced at $260 found 6 days ago
Wed, Sep 30 - Thu, Oct 1
RIC
Richmond Intl.
ORD
O'Hare Intl.
$263 Roundtrip, found 6 days ago
$263
Roundtrip
found 6 days ago
Select United flight, departing Wed, Sep 30 from Richmond Intl. to O'Hare Intl., returning Thu, Oct 1, priced at $263 found 6 days ago
Wed, Sep 23 - Fri, Sep 25
RIC
Richmond Intl.
ORD
O'Hare Intl.
$264 Roundtrip, found 14 hours ago
$264
Roundtrip
found 14 hours ago
Select United flight, departing Wed, Sep 23 from Richmond Intl. to O'Hare Intl., returning Fri, Sep 25, priced at $264 found 14 hours ago
Mon, Oct 19 - Fri, Oct 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$266 Roundtrip, found 2 days ago
$266
Roundtrip
found 2 days ago
Select United flight, departing Mon, Oct 19 from Richmond Intl. to O'Hare Intl., returning Fri, Oct 23, priced at $266 found 2 days ago
Wed, Sep 30 - Thu, Oct 1
RIC
Richmond Intl.
ORD
O'Hare Intl.
$267 Roundtrip, found 6 days ago
$267
Roundtrip
found 6 days ago
Select United flight, departing Wed, Sep 30 from Richmond Intl. to O'Hare Intl., returning Thu, Oct 1, priced at $267 found 6 days ago
Wed, Sep 16 - Thu, Sep 17
RIC
Richmond Intl.
ORD
O'Hare Intl.
$268 Roundtrip, found 7 hours ago
$268
Roundtrip
found 7 hours ago
Select United flight, departing Wed, Sep 16 from Richmond Intl. to O'Hare Intl., returning Thu, Sep 17, priced at $268 found 7 hours ago
Wed, Sep 23 - Fri, Sep 25
RIC
Richmond Intl.
ORD
O'Hare Intl.
$268 Roundtrip, found 14 hours ago
$268
Roundtrip
found 14 hours ago
Select United flight, departing Wed, Sep 23 from Richmond Intl. to O'Hare Intl., returning Fri, Sep 25, priced at $268 found 14 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.