United Flight 3640 Deals & Information (2026/2027)

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United Flight 3640 Route Deals From $131

The cheapest prices found with in the last 7 days for return flights were $278 and $131 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Oct 12 - Tue, Oct 13
RIC
Richmond Intl.
ORD
O'Hare Intl.
$278 Roundtrip, found 20 hours ago
$278
Roundtrip
found 20 hours ago
Select United flight, departing Mon, Oct 12 from Richmond Intl. to O'Hare Intl., returning Tue, Oct 13, priced at $278 found 20 hours ago
Mon, Oct 12 - Tue, Oct 13
RIC
Richmond Intl.
ORD
O'Hare Intl.
$282 Roundtrip, found 20 hours ago
$282
Roundtrip
found 20 hours ago
Select United flight, departing Mon, Oct 12 from Richmond Intl. to O'Hare Intl., returning Tue, Oct 13, priced at $282 found 20 hours ago
Sat, Dec 5 - Mon, Dec 7
RIC
Richmond Intl.
ORD
O'Hare Intl.
$295 Roundtrip, found 22 hours ago
$295
Roundtrip
found 22 hours ago
Select United flight, departing Sat, Dec 5 from Richmond Intl. to O'Hare Intl., returning Mon, Dec 7, priced at $295 found 22 hours ago
Thu, Oct 22 - Mon, Oct 26
RIC
Richmond Intl.
ORD
O'Hare Intl.
$301 Roundtrip, found 1 day ago
$301
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 22 from Richmond Intl. to O'Hare Intl., returning Mon, Oct 26, priced at $301 found 1 day ago
Sat, Dec 5 - Mon, Dec 7
RIC
Richmond Intl.
ORD
O'Hare Intl.
$304 Roundtrip, found 22 hours ago
$304
Roundtrip
found 22 hours ago
Select United flight, departing Sat, Dec 5 from Richmond Intl. to O'Hare Intl., returning Mon, Dec 7, priced at $304 found 22 hours ago
Thu, Oct 22 - Mon, Oct 26
RIC
Richmond Intl.
ORD
O'Hare Intl.
$307 Roundtrip, found 1 day ago
$307
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 22 from Richmond Intl. to O'Hare Intl., returning Mon, Oct 26, priced at $307 found 1 day ago
Thu, Oct 22 - Mon, Oct 26
RIC
Richmond Intl.
ORD
O'Hare Intl.
$311 Roundtrip, found 1 day ago
$311
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 22 from Richmond Intl. to O'Hare Intl., returning Mon, Oct 26, priced at $311 found 1 day ago
Fri, Jan 22 - Sat, Jan 23
RIC
Richmond Intl.
ORD
O'Hare Intl.
$318 Roundtrip, found 19 hours ago
$318
Roundtrip
found 19 hours ago
Select United flight, departing Fri, Jan 22 from Richmond Intl. to O'Hare Intl., returning Sat, Jan 23, priced at $318 found 19 hours ago
Mon, Oct 19 - Thu, Oct 22
RIC
Richmond Intl.
ORD
O'Hare Intl.
$321 Roundtrip, found 5 days ago
$321
Roundtrip
found 5 days ago
Select United flight, departing Mon, Oct 19 from Richmond Intl. to O'Hare Intl., returning Thu, Oct 22, priced at $321 found 5 days ago
Thu, Oct 22 - Mon, Oct 26
RIC
Richmond Intl.
ORD
O'Hare Intl.
$324 Roundtrip, found 1 day ago
$324
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 22 from Richmond Intl. to O'Hare Intl., returning Mon, Oct 26, priced at $324 found 1 day ago
Thu, Oct 22 - Mon, Oct 26
RIC
Richmond Intl.
ORD
O'Hare Intl.
$327 Roundtrip, found 1 day ago
$327
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 22 from Richmond Intl. to O'Hare Intl., returning Mon, Oct 26, priced at $327 found 1 day ago
Thu, Oct 22 - Mon, Oct 26
RIC
Richmond Intl.
ORD
O'Hare Intl.
$330 Roundtrip, found 1 day ago
$330
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 22 from Richmond Intl. to O'Hare Intl., returning Mon, Oct 26, priced at $330 found 1 day ago
Mon, Oct 19 - Thu, Oct 22
RIC
Richmond Intl.
ORD
O'Hare Intl.
$331 Roundtrip, found 5 days ago
$331
Roundtrip
found 5 days ago
Select United flight, departing Mon, Oct 19 from Richmond Intl. to O'Hare Intl., returning Thu, Oct 22, priced at $331 found 5 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.