United Flight 9721 Deals & Information (2025/2026)

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United Flight 9721 Route Deals From $474

The cheapest prices found with in the last 7 days for return flights were $548 and $474 for one-way flights to Zürich for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Apr 1 - Tue, May 5
BOS
Logan Intl.
ZRH
Zürich
$548 Roundtrip, found 4 days ago
$548
Roundtrip
found 4 days ago
Select United flight, departing Wed, Apr 1 from Logan Intl. to Zürich, returning Tue, May 5, priced at $548 found 4 days ago