United Flight AC8539 Deals & Information (2025/2026)

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United Flight 8539 Route Deals From $127

The cheapest prices found with in the last 7 days for return flights were $266 and $127 for one-way flights to Pearson Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Aug 2 - Fri, Aug 8
BOS
Logan Intl.
YYZ
Pearson Intl.
$266 Roundtrip, found 2 days ago
$266
Roundtrip
found 2 days ago
Select United flight, departing Sat, Aug 2 from Logan Intl. to Pearson Intl., returning Fri, Aug 8, priced at $266 found 2 days ago
Sun, Jul 6 - Thu, Jul 10
BOS
Logan Intl.
YYZ
Pearson Intl.
$308 Roundtrip, found 17 hours ago
$308
Roundtrip
found 17 hours ago
Select United flight, departing Sun, Jul 6 from Logan Intl. to Pearson Intl., returning Thu, Jul 10, priced at $308 found 17 hours ago
Thu, Sep 4 - Tue, Sep 9
BOS
Logan Intl.
YYZ
Pearson Intl.
$321 Roundtrip, found 1 hour ago
$321
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Sep 4 from Logan Intl. to Pearson Intl., returning Tue, Sep 9, priced at $321 found 1 hour ago
Thu, Sep 4 - Tue, Sep 9
BOS
Logan Intl.
YYZ
Pearson Intl.
$323 Roundtrip, found 1 hour ago
$323
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Sep 4 from Logan Intl. to Pearson Intl., returning Tue, Sep 9, priced at $323 found 1 hour ago
Thu, Sep 4 - Tue, Sep 9
BOS
Logan Intl.
YYZ
Pearson Intl.
$402 Roundtrip, found 1 hour ago
$402
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Sep 4 from Logan Intl. to Pearson Intl., returning Tue, Sep 9, priced at $402 found 1 hour ago