Delta Flight DL3978 Deals & Information (2025/2026)

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Delta Flight 3978 Route Deals From $360

The cheapest prices found with in the last 7 days for return flights were $299 and $360 for one-way flights to Louisville Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Oct 23 - Sun, Oct 26
MSP
Minneapolis - St. Paul Intl.
SDF
Louisville Intl.
$299 Roundtrip, found 1 day ago
$299
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Oct 23 from Minneapolis - St. Paul Intl. to Louisville Intl., returning Sun, Oct 26, priced at $299 found 1 day ago

Frequently asked questions

What route does flight number DL3978 take?
You'll be touching down at Seattle - Tacoma Intl. Airport (SEA) from EUG if you've booked a ticket on flight number DL3978. You'll be in the sky for 1 hour and 14 minutes during this journey. It's also good to note that the flight conveniently travels non-stop.
What kind of plane is on flight number DL3978?
The Embraer 175 is the kind of plane that's generally used for flight DL3978. This flight typically departs from Mahlon Sweet Field and lands at Seattle, WA Airport (SEA-Seattle - Tacoma Intl.).
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 DL3978 flight with Travelocity, please visit our Customer Service Portal.