Delta Flight 3721 Deals & Information (2025/2026)

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Delta Flight 3721 Route Deals From $138

The cheapest prices found with in the last 7 days for return flights were $210 and $138 for one-way flights to Eugene for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Feb 6 - Wed, Feb 18
SLC
Salt Lake City Intl.
EUG
Eugene
$210 Roundtrip, found 19 hours ago
$210
Roundtrip
found 19 hours ago
Select Delta flight, departing Fri, Feb 6 from Salt Lake City Intl. to Eugene, returning Wed, Feb 18, priced at $210 found 19 hours ago
Wed, Jan 7 - Wed, Jan 14
SLC
Salt Lake City Intl.
EUG
Eugene
$225 Roundtrip, found 2 days ago
$225
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Jan 7 from Salt Lake City Intl. to Eugene, returning Wed, Jan 14, priced at $225 found 2 days ago
Tue, Jan 6 - Wed, Jan 21
SLC
Salt Lake City Intl.
EUG
Eugene
$226 Roundtrip, found 6 days ago
$226
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Jan 6 from Salt Lake City Intl. to Eugene, returning Wed, Jan 21, priced at $226 found 6 days ago
Sat, Jan 10 - Tue, Jan 13
SLC
Salt Lake City Intl.
EUG
Eugene
$228 Roundtrip, found 2 days ago
$228
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Jan 10 from Salt Lake City Intl. to Eugene, returning Tue, Jan 13, priced at $228 found 2 days ago
Tue, Jan 6 - Sat, Jan 10
SLC
Salt Lake City Intl.
EUG
Eugene
$228 Roundtrip, found 5 days ago
$228
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Jan 6 from Salt Lake City Intl. to Eugene, returning Sat, Jan 10, priced at $228 found 5 days ago
Sun, Mar 1 - Wed, Mar 18
SLC
Salt Lake City Intl.
EUG
Eugene
$399 Roundtrip, found 6 days ago
$399
Roundtrip
found 6 days ago
Select Delta flight, departing Sun, Mar 1 from Salt Lake City Intl. to Eugene, returning Wed, Mar 18, priced at $399 found 6 days ago

Frequently asked questions

What route does flight number DL3721 take?
DL3721 takes a few routes. The most popular is Salt Lake City Intl. Airport to Idaho Falls Regional Airport (IDA), which flies direct. This flight takes about 59 minutes. That said, there may be other flights with the same number that are multi-stop.
What kind of plane is on flight number DL3721?
It's more than likely you'll be enjoying the services of the Embraer 175 if you've reserved a ticket on flight DL3721 from SLC to IDA. It's the most commonly used aircraft type on this particular route.
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 DL3721 flight with Travelocity, please visit our Customer Service Portal.