United Flight 3640 Deals & Information (2026/2027)

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United Flight 3640 Route Deals From $148

The cheapest prices found with in the last 7 days for return flights were $261 and $148 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Nov 20 - Tue, Dec 1
RIC
Richmond Intl.
ORD
O'Hare Intl.
$261 Roundtrip, found 1 day ago
$261
Roundtrip
found 1 day ago
Select United flight, departing Fri, Nov 20 from Richmond Intl. to O'Hare Intl., returning Tue, Dec 1, priced at $261 found 1 day ago
Thu, Nov 19 - Fri, Nov 27
RIC
Richmond Intl.
ORD
O'Hare Intl.
$273 Roundtrip, found 1 day ago
$273
Roundtrip
found 1 day ago
Select United flight, departing Thu, Nov 19 from Richmond Intl. to O'Hare Intl., returning Fri, Nov 27, priced at $273 found 1 day ago
Thu, Nov 19 - Fri, Nov 27
RIC
Richmond Intl.
ORD
O'Hare Intl.
$279 Roundtrip, found 1 day ago
$279
Roundtrip
found 1 day ago
Select United flight, departing Thu, Nov 19 from Richmond Intl. to O'Hare Intl., returning Fri, Nov 27, priced at $279 found 1 day ago
Fri, Nov 20 - Tue, Dec 1
RIC
Richmond Intl.
ORD
O'Hare Intl.
$287 Roundtrip, found 1 day ago
$287
Roundtrip
found 1 day ago
Select United flight, departing Fri, Nov 20 from Richmond Intl. to O'Hare Intl., returning Tue, Dec 1, priced at $287 found 1 day ago
Thu, Nov 19 - Fri, Nov 27
RIC
Richmond Intl.
ORD
O'Hare Intl.
$288 Roundtrip, found 1 day ago
$288
Roundtrip
found 1 day ago
Select United flight, departing Thu, Nov 19 from Richmond Intl. to O'Hare Intl., returning Fri, Nov 27, priced at $288 found 1 day ago
Thu, Nov 19 - Fri, Nov 27
RIC
Richmond Intl.
ORD
O'Hare Intl.
$290 Roundtrip, found 1 day ago
$290
Roundtrip
found 1 day ago
Select United flight, departing Thu, Nov 19 from Richmond Intl. to O'Hare Intl., returning Fri, Nov 27, priced at $290 found 1 day ago
Thu, Nov 19 - Fri, Nov 27
RIC
Richmond Intl.
ORD
O'Hare Intl.
$293 Roundtrip, found 1 day ago
$293
Roundtrip
found 1 day ago
Select United flight, departing Thu, Nov 19 from Richmond Intl. to O'Hare Intl., returning Fri, Nov 27, priced at $293 found 1 day ago
Thu, Nov 19 - Fri, Nov 27
RIC
Richmond Intl.
ORD
O'Hare Intl.
$298 Roundtrip, found 1 day ago
$298
Roundtrip
found 1 day ago
Select United flight, departing Thu, Nov 19 from Richmond Intl. to O'Hare Intl., returning Fri, Nov 27, priced at $298 found 1 day ago
Thu, Nov 19 - Fri, Nov 27
RIC
Richmond Intl.
ORD
O'Hare Intl.
$308 Roundtrip, found 1 day ago
$308
Roundtrip
found 1 day ago
Select United flight, departing Thu, Nov 19 from Richmond Intl. to O'Hare Intl., returning Fri, Nov 27, priced at $308 found 1 day ago
Thu, Nov 19 - Fri, Nov 27
RIC
Richmond Intl.
ORD
O'Hare Intl.
$310 Roundtrip, found 1 day ago
$310
Roundtrip
found 1 day ago
Select United flight, departing Thu, Nov 19 from Richmond Intl. to O'Hare Intl., returning Fri, Nov 27, priced at $310 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.