United Flight 3640 Deals & Information (2025/2026)

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United Flight 3640 Route Deals From $98

The cheapest prices found with in the last 7 days for return flights were $151 and $98 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Jan 12 - Thu, Jan 22
YYZ
Pearson Intl.
ORD
O'Hare Intl.
$151 Roundtrip, found 2 days ago
$151
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jan 12 from Pearson Intl. to O'Hare Intl., returning Thu, Jan 22, priced at $151 found 2 days ago
Mon, Jan 12 - Thu, Jan 22
YYZ
Pearson Intl.
ORD
O'Hare Intl.
$169 Roundtrip, found 2 days ago
$169
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jan 12 from Pearson Intl. to O'Hare Intl., returning Thu, Jan 22, priced at $169 found 2 days ago
Mon, Jan 12 - Thu, Jan 22
YYZ
Pearson Intl.
ORD
O'Hare Intl.
$184 Roundtrip, found 2 days ago
$184
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jan 12 from Pearson Intl. to O'Hare Intl., returning Thu, Jan 22, priced at $184 found 2 days ago
Mon, Jan 12 - Thu, Jan 22
YYZ
Pearson Intl.
ORD
O'Hare Intl.
$197 Roundtrip, found 2 days ago
$197
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jan 12 from Pearson Intl. to O'Hare Intl., returning Thu, Jan 22, priced at $197 found 2 days ago
Mon, Jan 12 - Thu, Jan 22
YYZ
Pearson Intl.
ORD
O'Hare Intl.
$207 Roundtrip, found 2 days ago
$207
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jan 12 from Pearson Intl. to O'Hare Intl., returning Thu, Jan 22, priced at $207 found 2 days ago
Mon, Jan 12 - Thu, Jan 22
YYZ
Pearson Intl.
ORD
O'Hare Intl.
$213 Roundtrip, found 2 days ago
$213
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jan 12 from Pearson Intl. to O'Hare Intl., returning Thu, Jan 22, priced at $213 found 2 days ago
Mon, Dec 29 - Wed, Jan 7
YYZ
Pearson Intl.
ORD
O'Hare Intl.
$218 Roundtrip, found 2 days ago
$218
Roundtrip
found 2 days ago
Select United flight, departing Mon, Dec 29 from Pearson Intl. to O'Hare Intl., returning Wed, Jan 7, priced at $218 found 2 days ago
Thu, Dec 18 - Sun, Jan 18
YYZ
Pearson Intl.
ORD
O'Hare Intl.
$219 Roundtrip, found 3 days ago
$219
Roundtrip
found 3 days ago
Select United flight, departing Thu, Dec 18 from Pearson Intl. to O'Hare Intl., returning Sun, Jan 18, priced at $219 found 3 days ago
Mon, Jan 12 - Thu, Jan 22
YYZ
Pearson Intl.
ORD
O'Hare Intl.
$225 Roundtrip, found 2 days ago
$225
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jan 12 from Pearson Intl. to O'Hare Intl., returning Thu, Jan 22, priced at $225 found 2 days ago
Mon, Jan 12 - Thu, Jan 22
YYZ
Pearson Intl.
ORD
O'Hare Intl.
$230 Roundtrip, found 2 days ago
$230
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jan 12 from Pearson Intl. to O'Hare Intl., returning Thu, Jan 22, priced at $230 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.