Delta Flight 3639 Deals & Information (2025/2026)

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Delta Flight 3639 Route Deals From $167

The cheapest prices found with in the last 7 days for return flights were $283 and $167 for one-way flights to Salt Lake City Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Nov 4 - Tue, Nov 11
EUG
Eugene
SLC
Salt Lake City Intl.
$283 Roundtrip, found 3 days ago
$283
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Nov 4 from Eugene to Salt Lake City Intl., returning Tue, Nov 11, priced at $283 found 3 days ago
Sun, Sep 21 - Fri, Sep 26
EUG
Eugene
SLC
Salt Lake City Intl.
$344 Roundtrip, found 3 days ago
$344
Roundtrip
found 3 days ago
Select Delta flight, departing Sun, Sep 21 from Eugene to Salt Lake City Intl., returning Fri, Sep 26, priced at $344 found 3 days ago

Frequently asked questions

What route does flight number DL3639 take?
Flight number DL3639 flies directly from Washington, DC Airport (IAD-Washington Dulles Intl.) to Detroit Metropolitan Wayne County Airport (DTW). During this trip, you’ll be in the air for 1 hour and 50 minutes. Book ahead to secure your favorite seat.
What kind of plane is on flight number DL3639?
There’s a strong chance you’ll find yourself on a Bombardier CRJ900 if you’re booked on flight number DL3639. Generally, this flight takes off from Washington Dulles Intl. Airport (IAD) and lands at Detroit, MI Airport (DTW-Detroit Metropolitan Wayne County).
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 DL3639 flight with Travelocity, please visit our Customer Service Portal.