
United Flight 3640 Deals & Information (2025/2026)
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United Flight 3640 Route Deals From $128
The cheapest prices found with in the last 7 days for return flights were $209 and $128 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.
YYZ
Pearson Intl.
ORD
O'Hare Intl.
$209 Roundtrip, found 3 days ago
$209
Roundtrip
found 3 days ago
YYZ
Pearson Intl.
ORD
O'Hare Intl.
$210 Roundtrip, found 3 days ago
$210
Roundtrip
found 3 days ago
YYZ
Pearson Intl.
ORD
O'Hare Intl.
$213 Roundtrip, found 2 days ago
$213
Roundtrip
found 2 days ago
YYZ
Pearson Intl.
ORD
O'Hare Intl.
$221 Roundtrip, found 3 days ago
$221
Roundtrip
found 3 days ago
YYZ
Pearson Intl.
ORD
O'Hare Intl.
$223 Roundtrip, found 2 days ago
$223
Roundtrip
found 2 days ago
YYZ
Pearson Intl.
ORD
O'Hare Intl.
$224 Roundtrip, found 3 days ago
$224
Roundtrip
found 3 days ago