Delta Flight AS4120 Deals & Information (2024/2025)

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Delta Flight 4120 Route Deals From $69

The cheapest prices found with in the last 7 days for return flights were $137 and $69 for one-way flights to Seattle - Tacoma Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Sep 3 - Tue, Sep 10
BOI
Boise
SEA
Seattle - Tacoma Intl.
$137 Roundtrip, found 20 hours ago
$137
Roundtrip
found 20 hours ago
Select Delta flight, departing Tue, Sep 3 from Boise to Seattle - Tacoma Intl., returning Tue, Sep 10, priced at $137 found 20 hours ago

Frequently asked questions

What route does flight number DL4120 take?
Flight number DL4120 operates direct from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to Boise Airport. During this journey, expect to be in the air for roughly 1 hour and 25 minutes. Book ahead to lock in your preferred seat.
What kind of plane is on flight number DL4120?
The Embraer 175 is the plane most commonly used for flight DL4120. This flight typically departs from Seattle - Tacoma Intl. Airport (SEA) and touches down at Boise Airport.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your DL4120 flight with Travelocity, please visit our Customer Service Portal.