United Flight 3640 Deals & Information (2026/2027)

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United Flight 3640 Route Deals From $237

The cheapest prices found with in the last 7 days for return flights were $264 and $237 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, May 4 - Mon, May 11
MSN
Dane County Regional
ORD
O'Hare Intl.
$264 Roundtrip, found 3 hours ago
$264
Roundtrip
found 3 hours ago
Select United flight, departing Mon, May 4 from Dane County Regional to O'Hare Intl., returning Mon, May 11, priced at $264 found 3 hours ago
Mon, May 4 - Mon, May 11
MSN
Dane County Regional
ORD
O'Hare Intl.
$275 Roundtrip, found 3 hours ago
$275
Roundtrip
found 3 hours ago
Select United flight, departing Mon, May 4 from Dane County Regional to O'Hare Intl., returning Mon, May 11, priced at $275 found 3 hours ago
Mon, May 4 - Mon, May 11
MSN
Dane County Regional
ORD
O'Hare Intl.
$294 Roundtrip, found 3 hours ago
$294
Roundtrip
found 3 hours ago
Select United flight, departing Mon, May 4 from Dane County Regional to O'Hare Intl., returning Mon, May 11, priced at $294 found 3 hours ago
Mon, May 4 - Mon, May 11
MSN
Dane County Regional
ORD
O'Hare Intl.
$295 Roundtrip, found 3 hours ago
$295
Roundtrip
found 3 hours ago
Select United flight, departing Mon, May 4 from Dane County Regional to O'Hare Intl., returning Mon, May 11, priced at $295 found 3 hours ago
Mon, May 4 - Mon, May 11
MSN
Dane County Regional
ORD
O'Hare Intl.
$305 Roundtrip, found 3 hours ago
$305
Roundtrip
found 3 hours ago
Select United flight, departing Mon, May 4 from Dane County Regional to O'Hare Intl., returning Mon, May 11, priced at $305 found 3 hours ago
Mon, May 4 - Mon, May 11
MSN
Dane County Regional
ORD
O'Hare Intl.
$323 Roundtrip, found 3 hours ago
$323
Roundtrip
found 3 hours ago
Select United flight, departing Mon, May 4 from Dane County Regional to O'Hare Intl., returning Mon, May 11, priced at $323 found 3 hours ago
Mon, May 4 - Mon, May 11
MSN
Dane County Regional
ORD
O'Hare Intl.
$324 Roundtrip, found 3 hours ago
$324
Roundtrip
found 3 hours ago
Select United flight, departing Mon, May 4 from Dane County Regional to O'Hare Intl., returning Mon, May 11, priced at $324 found 3 hours ago
Mon, May 4 - Mon, May 11
MSN
Dane County Regional
ORD
O'Hare Intl.
$329 Roundtrip, found 3 hours ago
$329
Roundtrip
found 3 hours ago
Select United flight, departing Mon, May 4 from Dane County Regional to O'Hare Intl., returning Mon, May 11, priced at $329 found 3 hours ago
Mon, May 4 - Mon, May 11
MSN
Dane County Regional
ORD
O'Hare Intl.
$330 Roundtrip, found 3 hours ago
$330
Roundtrip
found 3 hours ago
Select United flight, departing Mon, May 4 from Dane County Regional to O'Hare Intl., returning Mon, May 11, priced at $330 found 3 hours ago
Mon, May 4 - Mon, May 11
MSN
Dane County Regional
ORD
O'Hare Intl.
$336 Roundtrip, found 3 hours ago
$336
Roundtrip
found 3 hours ago
Select United flight, departing Mon, May 4 from Dane County Regional to O'Hare Intl., returning Mon, May 11, priced at $336 found 3 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.