United Flight 3640 Deals & Information (2026/2027)

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United Flight 3640 Route Deals From $129

The cheapest prices found with in the last 7 days for return flights were $261 and $129 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Jan 22 - Sat, Jan 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$261 Roundtrip, just found
$261
Roundtrip
just found
Select United flight, departing Fri, Jan 22 from Richmond Intl. to O'Hare Intl., returning Sat, Jan 23, priced at $261 just found
Fri, Jan 22 - Sat, Jan 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$271 Roundtrip, just found
$271
Roundtrip
just found
Select United flight, departing Fri, Jan 22 from Richmond Intl. to O'Hare Intl., returning Sat, Jan 23, priced at $271 just found
Fri, Jan 22 - Sat, Jan 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$279 Roundtrip, just found
$279
Roundtrip
just found
Select United flight, departing Fri, Jan 22 from Richmond Intl. to O'Hare Intl., returning Sat, Jan 23, priced at $279 just found
Sat, Dec 19 - Tue, Jan 5
RIC
Richmond Intl.
ORD
O'Hare Intl.
$281 Roundtrip, found 18 hours ago
$281
Roundtrip
found 18 hours ago
Select United flight, departing Sat, Dec 19 from Richmond Intl. to O'Hare Intl., returning Tue, Jan 5, priced at $281 found 18 hours ago
Sat, Nov 21 - Mon, Nov 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$284 Roundtrip, found 19 hours ago
$284
Roundtrip
found 19 hours ago
Select United flight, departing Sat, Nov 21 from Richmond Intl. to O'Hare Intl., returning Mon, Nov 23, priced at $284 found 19 hours ago
Fri, Jan 22 - Sat, Jan 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$288 Roundtrip, just found
$288
Roundtrip
just found
Select United flight, departing Fri, Jan 22 from Richmond Intl. to O'Hare Intl., returning Sat, Jan 23, priced at $288 just found
Sat, Nov 21 - Mon, Nov 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$294 Roundtrip, found 19 hours ago
$294
Roundtrip
found 19 hours ago
Select United flight, departing Sat, Nov 21 from Richmond Intl. to O'Hare Intl., returning Mon, Nov 23, priced at $294 found 19 hours ago
Fri, Jan 22 - Sat, Jan 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$309 Roundtrip, just found
$309
Roundtrip
just found
Select United flight, departing Fri, Jan 22 from Richmond Intl. to O'Hare Intl., returning Sat, Jan 23, priced at $309 just found
Sat, Nov 21 - Mon, Nov 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$310 Roundtrip, found 19 hours ago
$310
Roundtrip
found 19 hours ago
Select United flight, departing Sat, Nov 21 from Richmond Intl. to O'Hare Intl., returning Mon, Nov 23, priced at $310 found 19 hours ago
Sat, Nov 21 - Mon, Nov 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$311 Roundtrip, found 19 hours ago
$311
Roundtrip
found 19 hours ago
Select United flight, departing Sat, Nov 21 from Richmond Intl. to O'Hare Intl., returning Mon, Nov 23, priced at $311 found 19 hours ago
Sat, Nov 21 - Mon, Nov 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$314 Roundtrip, found 19 hours ago
$314
Roundtrip
found 19 hours ago
Select United flight, departing Sat, Nov 21 from Richmond Intl. to O'Hare Intl., returning Mon, Nov 23, priced at $314 found 19 hours ago
Sat, Nov 21 - Mon, Nov 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$316 Roundtrip, found 19 hours ago
$316
Roundtrip
found 19 hours ago
Select United flight, departing Sat, Nov 21 from Richmond Intl. to O'Hare Intl., returning Mon, Nov 23, priced at $316 found 19 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.