United Flight 3640 Deals & Information (2026/2027)

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United Flight 3640 Route Deals From $112

The cheapest prices found with in the last 7 days for return flights were $168 and $112 for one-way flights to Pittsburgh Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Mar 30 - Tue, Mar 31
ORD
O'Hare Intl.
PIT
Pittsburgh Intl.
$168 Roundtrip, found 1 day ago
$168
Roundtrip
found 1 day ago
Select United flight, departing Mon, Mar 30 from O'Hare Intl. to Pittsburgh Intl., returning Tue, Mar 31, priced at $168 found 1 day ago
Thu, Apr 9 - Mon, Apr 13
ORD
O'Hare Intl.
PIT
Pittsburgh Intl.
$179 Roundtrip, found 2 days ago
$179
Roundtrip
found 2 days ago
Select United flight, departing Thu, Apr 9 from O'Hare Intl. to Pittsburgh Intl., returning Mon, Apr 13, priced at $179 found 2 days ago
Wed, Apr 22 - Sat, Apr 25
ORD
O'Hare Intl.
PIT
Pittsburgh Intl.
$184 Roundtrip, found 1 day ago
$184
Roundtrip
found 1 day ago
Select United flight, departing Wed, Apr 22 from O'Hare Intl. to Pittsburgh Intl., returning Sat, Apr 25, priced at $184 found 1 day ago
Thu, Mar 26 - Mon, Mar 30
ORD
O'Hare Intl.
PIT
Pittsburgh Intl.
$185 Roundtrip, found 1 day ago
$185
Roundtrip
found 1 day ago
Select United flight, departing Thu, Mar 26 from O'Hare Intl. to Pittsburgh Intl., returning Mon, Mar 30, priced at $185 found 1 day ago
Wed, Mar 25 - Thu, Mar 26
ORD
O'Hare Intl.
PIT
Pittsburgh Intl.
$195 Roundtrip, found 1 hour ago
$195
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Mar 25 from O'Hare Intl. to Pittsburgh Intl., returning Thu, Mar 26, priced at $195 found 1 hour ago
Thu, Apr 9 - Mon, Apr 13
ORD
O'Hare Intl.
PIT
Pittsburgh Intl.
$200 Roundtrip, found 2 days ago
$200
Roundtrip
found 2 days ago
Select United flight, departing Thu, Apr 9 from O'Hare Intl. to Pittsburgh Intl., returning Mon, Apr 13, priced at $200 found 2 days ago
Thu, Apr 23 - Mon, Apr 27
ORD
O'Hare Intl.
PIT
Pittsburgh Intl.
$202 Roundtrip, found 1 day ago
$202
Roundtrip
found 1 day ago
Select United flight, departing Thu, Apr 23 from O'Hare Intl. to Pittsburgh Intl., returning Mon, Apr 27, priced at $202 found 1 day ago
Tue, Mar 31 - Thu, Apr 2
ORD
O'Hare Intl.
PIT
Pittsburgh Intl.
$204 Roundtrip, found 3 days ago
$204
Roundtrip
found 3 days ago
Select United flight, departing Tue, Mar 31 from O'Hare Intl. to Pittsburgh Intl., returning Thu, Apr 2, priced at $204 found 3 days ago
Sat, Mar 28 - Mon, Mar 30
ORD
O'Hare Intl.
PIT
Pittsburgh Intl.
$208 Roundtrip, found 1 day ago
$208
Roundtrip
found 1 day ago
Select United flight, departing Sat, Mar 28 from O'Hare Intl. to Pittsburgh Intl., returning Mon, Mar 30, priced at $208 found 1 day ago
Mon, Mar 30 - Tue, Mar 31
ORD
O'Hare Intl.
PIT
Pittsburgh Intl.
$208 Roundtrip, found 1 day ago
$208
Roundtrip
found 1 day ago
Select United flight, departing Mon, Mar 30 from O'Hare Intl. to Pittsburgh Intl., returning Tue, Mar 31, priced at $208 found 1 day ago
Sat, Mar 28 - Mon, Mar 30
ORD
O'Hare Intl.
PIT
Pittsburgh Intl.
$214 Roundtrip, found 1 day ago
$214
Roundtrip
found 1 day ago
Select United flight, departing Sat, Mar 28 from O'Hare Intl. to Pittsburgh Intl., returning Mon, Mar 30, priced at $214 found 1 day ago
Thu, Mar 26 - Mon, Mar 30
ORD
O'Hare Intl.
PIT
Pittsburgh Intl.
$216 Roundtrip, found 1 day ago
$216
Roundtrip
found 1 day ago
Select United flight, departing Thu, Mar 26 from O'Hare Intl. to Pittsburgh Intl., returning Mon, Mar 30, priced at $216 found 1 day ago
Sat, Apr 18 - Mon, Apr 20
ORD
O'Hare Intl.
PIT
Pittsburgh Intl.
$221 Roundtrip, found 3 hours ago
$221
Roundtrip
found 3 hours ago
Select United flight, departing Sat, Apr 18 from O'Hare Intl. to Pittsburgh Intl., returning Mon, Apr 20, priced at $221 found 3 hours ago
Sat, Mar 28 - Mon, Mar 30
ORD
O'Hare Intl.
PIT
Pittsburgh Intl.
$230 Roundtrip, found 1 day ago
$230
Roundtrip
found 1 day ago
Select United flight, departing Sat, Mar 28 from O'Hare Intl. to Pittsburgh Intl., returning Mon, Mar 30, priced at $230 found 1 day ago
Thu, Apr 9 - Mon, Apr 13
ORD
O'Hare Intl.
PIT
Pittsburgh Intl.
$231 Roundtrip, found 2 days ago
$231
Roundtrip
found 2 days ago
Select United flight, departing Thu, Apr 9 from O'Hare Intl. to Pittsburgh Intl., returning Mon, Apr 13, priced at $231 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.