Air Canada Flight 521 Deals & Information (2026/2027)

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Air Canada Flight 521 Route Deals From

The cheapest prices found with in the last 7 days for return flights were $313 and for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Nov 26 - Tue, Dec 1
YUL
Pierre Elliott Trudeau Intl.
ORD
O'Hare Intl.
$313 Roundtrip, found 6 days ago
$313
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Nov 26 from Pierre Elliott Trudeau Intl. to O'Hare Intl., returning Tue, Dec 1, priced at $313 found 6 days ago
Thu, Nov 26 - Tue, Dec 1
YUL
Pierre Elliott Trudeau Intl.
ORD
O'Hare Intl.
$319 Roundtrip, found 6 days ago
$319
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Nov 26 from Pierre Elliott Trudeau Intl. to O'Hare Intl., returning Tue, Dec 1, priced at $319 found 6 days ago
Fri, Nov 6 - Tue, Nov 10
YUL
Pierre Elliott Trudeau Intl.
ORD
O'Hare Intl.
$326 Roundtrip, found 1 day ago
$326
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Nov 6 from Pierre Elliott Trudeau Intl. to O'Hare Intl., returning Tue, Nov 10, priced at $326 found 1 day ago
Thu, Nov 26 - Tue, Dec 1
YUL
Pierre Elliott Trudeau Intl.
ORD
O'Hare Intl.
$327 Roundtrip, found 6 days ago
$327
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Nov 26 from Pierre Elliott Trudeau Intl. to O'Hare Intl., returning Tue, Dec 1, priced at $327 found 6 days ago
Thu, Nov 26 - Tue, Dec 1
YUL
Pierre Elliott Trudeau Intl.
ORD
O'Hare Intl.
$328 Roundtrip, found 6 days ago
$328
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Nov 26 from Pierre Elliott Trudeau Intl. to O'Hare Intl., returning Tue, Dec 1, priced at $328 found 6 days ago
Fri, Nov 6 - Tue, Nov 10
YUL
Pierre Elliott Trudeau Intl.
ORD
O'Hare Intl.
$331 Roundtrip, found 1 day ago
$331
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Nov 6 from Pierre Elliott Trudeau Intl. to O'Hare Intl., returning Tue, Nov 10, priced at $331 found 1 day ago
Thu, Nov 26 - Tue, Dec 1
YUL
Pierre Elliott Trudeau Intl.
ORD
O'Hare Intl.
$332 Roundtrip, found 6 days ago
$332
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Nov 26 from Pierre Elliott Trudeau Intl. to O'Hare Intl., returning Tue, Dec 1, priced at $332 found 6 days ago
Thu, Nov 26 - Tue, Dec 1
YUL
Pierre Elliott Trudeau Intl.
ORD
O'Hare Intl.
$333 Roundtrip, found 6 days ago
$333
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Nov 26 from Pierre Elliott Trudeau Intl. to O'Hare Intl., returning Tue, Dec 1, priced at $333 found 6 days ago
Fri, Nov 6 - Tue, Nov 10
YUL
Pierre Elliott Trudeau Intl.
ORD
O'Hare Intl.
$339 Roundtrip, found 1 day ago
$339
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Nov 6 from Pierre Elliott Trudeau Intl. to O'Hare Intl., returning Tue, Nov 10, priced at $339 found 1 day ago
Thu, Nov 26 - Tue, Dec 1
YUL
Pierre Elliott Trudeau Intl.
ORD
O'Hare Intl.
$339 Roundtrip, found 6 days ago
$339
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Nov 26 from Pierre Elliott Trudeau Intl. to O'Hare Intl., returning Tue, Dec 1, priced at $339 found 6 days ago
Thu, Nov 26 - Tue, Dec 1
YUL
Pierre Elliott Trudeau Intl.
ORD
O'Hare Intl.
$342 Roundtrip, found 6 days ago
$342
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Nov 26 from Pierre Elliott Trudeau Intl. to O'Hare Intl., returning Tue, Dec 1, priced at $342 found 6 days ago
Fri, Nov 6 - Tue, Nov 10
YUL
Pierre Elliott Trudeau Intl.
ORD
O'Hare Intl.
$349 Roundtrip, found 1 day ago
$349
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Nov 6 from Pierre Elliott Trudeau Intl. to O'Hare Intl., returning Tue, Nov 10, priced at $349 found 1 day ago
Thu, Nov 26 - Tue, Dec 1
YUL
Pierre Elliott Trudeau Intl.
ORD
O'Hare Intl.
$352 Roundtrip, found 6 days ago
$352
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Nov 26 from Pierre Elliott Trudeau Intl. to O'Hare Intl., returning Tue, Dec 1, priced at $352 found 6 days ago
Thu, Nov 26 - Tue, Dec 1
YUL
Pierre Elliott Trudeau Intl.
ORD
O'Hare Intl.
$354 Roundtrip, found 6 days ago
$354
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Nov 26 from Pierre Elliott Trudeau Intl. to O'Hare Intl., returning Tue, Dec 1, priced at $354 found 6 days ago
Mon, Nov 23 - Mon, Nov 30
YUL
Pierre Elliott Trudeau Intl.
ORD
O'Hare Intl.
$356 Roundtrip, found 6 days ago
$356
Roundtrip
found 6 days ago
Select Air Canada flight, departing Mon, Nov 23 from Pierre Elliott Trudeau Intl. to O'Hare Intl., returning Mon, Nov 30, priced at $356 found 6 days ago
Thu, Nov 26 - Tue, Dec 1
YUL
Pierre Elliott Trudeau Intl.
ORD
O'Hare Intl.
$360 Roundtrip, found 6 days ago
$360
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Nov 26 from Pierre Elliott Trudeau Intl. to O'Hare Intl., returning Tue, Dec 1, priced at $360 found 6 days ago
Fri, Nov 6 - Tue, Nov 10
YUL
Pierre Elliott Trudeau Intl.
ORD
O'Hare Intl.
$363 Roundtrip, found 1 day ago
$363
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Nov 6 from Pierre Elliott Trudeau Intl. to O'Hare Intl., returning Tue, Nov 10, priced at $363 found 1 day ago
Fri, Nov 6 - Tue, Nov 10
YUL
Pierre Elliott Trudeau Intl.
ORD
O'Hare Intl.
$368 Roundtrip, found 1 day ago
$368
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Nov 6 from Pierre Elliott Trudeau Intl. to O'Hare Intl., returning Tue, Nov 10, priced at $368 found 1 day ago
Sun, Dec 20 - Mon, Jan 4
YUL
Pierre Elliott Trudeau Intl.
ORD
O'Hare Intl.
$379 Roundtrip, found 1 day ago
$379
Roundtrip
found 1 day ago
Select Air Canada flight, departing Sun, Dec 20 from Pierre Elliott Trudeau Intl. to O'Hare Intl., returning Mon, Jan 4, priced at $379 found 1 day ago