United Flight 8458 Deals & Information (2025/2026)

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United Flight 8458 Route Deals From $132

The cheapest prices found with in the last 7 days for return flights were $292 and $132 for one-way flights to Pierre Elliott Trudeau Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Oct 23 - Tue, Oct 28
ORD
O'Hare Intl.
YUL
Pierre Elliott Trudeau Intl.
$292 Roundtrip, found 15 hours ago
$292
Roundtrip
found 15 hours ago
Select United flight, departing Thu, Oct 23 from O'Hare Intl. to Pierre Elliott Trudeau Intl., returning Tue, Oct 28, priced at $292 found 15 hours ago
Thu, Oct 23 - Tue, Oct 28
ORD
O'Hare Intl.
YUL
Pierre Elliott Trudeau Intl.
$301 Roundtrip, found 15 hours ago
$301
Roundtrip
found 15 hours ago
Select United flight, departing Thu, Oct 23 from O'Hare Intl. to Pierre Elliott Trudeau Intl., returning Tue, Oct 28, priced at $301 found 15 hours ago
Fri, Oct 31 - Sun, Nov 2
ORD
O'Hare Intl.
YUL
Pierre Elliott Trudeau Intl.
$302 Roundtrip, just found
$302
Roundtrip
just found
Select United flight, departing Fri, Oct 31 from O'Hare Intl. to Pierre Elliott Trudeau Intl., returning Sun, Nov 2, priced at $302 just found
Fri, Oct 31 - Sun, Nov 2
ORD
O'Hare Intl.
YUL
Pierre Elliott Trudeau Intl.
$316 Roundtrip, just found
$316
Roundtrip
just found
Select United flight, departing Fri, Oct 31 from O'Hare Intl. to Pierre Elliott Trudeau Intl., returning Sun, Nov 2, priced at $316 just found
Thu, Oct 23 - Tue, Oct 28
ORD
O'Hare Intl.
YUL
Pierre Elliott Trudeau Intl.
$319 Roundtrip, found 15 hours ago
$319
Roundtrip
found 15 hours ago
Select United flight, departing Thu, Oct 23 from O'Hare Intl. to Pierre Elliott Trudeau Intl., returning Tue, Oct 28, priced at $319 found 15 hours ago
Sun, Nov 9 - Mon, Nov 10
ORD
O'Hare Intl.
YUL
Pierre Elliott Trudeau Intl.
$333 Roundtrip, found 1 hour ago
$333
Roundtrip
found 1 hour ago
Select United flight, departing Sun, Nov 9 from O'Hare Intl. to Pierre Elliott Trudeau Intl., returning Mon, Nov 10, priced at $333 found 1 hour ago
Fri, Oct 31 - Sun, Nov 2
ORD
O'Hare Intl.
YUL
Pierre Elliott Trudeau Intl.
$339 Roundtrip, just found
$339
Roundtrip
just found
Select United flight, departing Fri, Oct 31 from O'Hare Intl. to Pierre Elliott Trudeau Intl., returning Sun, Nov 2, priced at $339 just found