Delta Flight 3901 Deals & Information (2026/2027)

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Delta Flight 3901 Route Deals From $203

The cheapest prices found with in the last 7 days for return flights were $259 and $203 for one-way flights to Salt Lake City Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, May 26 - Sat, May 30
HLN
Helena Regional
SLC
Salt Lake City Intl.
$259 Roundtrip, found 12 hours ago
$259
Roundtrip
found 12 hours ago
Select Delta flight, departing Tue, May 26 from Helena Regional to Salt Lake City Intl., returning Sat, May 30, priced at $259 found 12 hours ago
Sun, Feb 8 - Sat, Feb 14
HLN
Helena Regional
SLC
Salt Lake City Intl.
$263 Roundtrip, found 5 days ago
$263
Roundtrip
found 5 days ago
Select Delta flight, departing Sun, Feb 8 from Helena Regional to Salt Lake City Intl., returning Sat, Feb 14, priced at $263 found 5 days ago
Tue, Feb 3 - Sat, Feb 14
HLN
Helena Regional
SLC
Salt Lake City Intl.
$279 Roundtrip, found 17 hours ago
$279
Roundtrip
found 17 hours ago
Select Delta flight, departing Tue, Feb 3 from Helena Regional to Salt Lake City Intl., returning Sat, Feb 14, priced at $279 found 17 hours ago
Thu, Jan 29 - Wed, Feb 4
HLN
Helena Regional
SLC
Salt Lake City Intl.
$283 Roundtrip, found 5 days ago
$283
Roundtrip
found 5 days ago
Select Delta flight, departing Thu, Jan 29 from Helena Regional to Salt Lake City Intl., returning Wed, Feb 4, priced at $283 found 5 days ago
Fri, Feb 6 - Mon, Feb 16
HLN
Helena Regional
SLC
Salt Lake City Intl.
$287 Roundtrip, found 17 hours ago
$287
Roundtrip
found 17 hours ago
Select Delta flight, departing Fri, Feb 6 from Helena Regional to Salt Lake City Intl., returning Mon, Feb 16, priced at $287 found 17 hours ago

Frequently asked questions

What route does flight number DL3901 take?
DL3901 travels between SMF and LAX and is a direct flight. This journey usually takes 1 hour and 28 minutes.
What terminal does DL3901 fly out of?
Direct flights to and from Sacramento, CA Airport (SMF-Sacramento Intl.) and Los Angeles Intl. Airport (LAX) are served by DL3901, and passengers who travel on this flight typically board from Terminal A.
What kind of plane is on flight number DL3901?
Get set to board an Embraer 175 if you're booked on flight DL3901. Almost all flights from Sacramento, CA Airport (SMF-Sacramento Intl.) to Los Angeles Intl. Airport (LAX) use this model of aircraft.
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 DL3901 flight with Travelocity, please visit our Customer Service Portal.