Delta Flight DL3901 Deals & Information (2025/2026)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Delta Flight 3901 Route Deals From $236

The cheapest prices found with in the last 7 days for return flights were $322 and $236 for one-way flights to Salt Lake City Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Sep 9 - Wed, Sep 17
HLN
Helena Regional
SLC
Salt Lake City Intl.
$322 Roundtrip, found 5 days ago
$322
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Sep 9 from Helena Regional to Salt Lake City Intl., returning Wed, Sep 17, priced at $322 found 5 days ago
Thu, Aug 14 - Sat, Aug 16
HLN
Helena Regional
SLC
Salt Lake City Intl.
$325 Roundtrip, found 5 days ago
$325
Roundtrip
found 5 days ago
Select Delta flight, departing Thu, Aug 14 from Helena Regional to Salt Lake City Intl., returning Sat, Aug 16, priced at $325 found 5 days ago
Wed, Aug 13 - Sat, Aug 16
HLN
Helena Regional
SLC
Salt Lake City Intl.
$359 Roundtrip, found 5 days ago
$359
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Aug 13 from Helena Regional to Salt Lake City Intl., returning Sat, Aug 16, priced at $359 found 5 days ago
Mon, Aug 11 - Sat, Aug 16
HLN
Helena Regional
SLC
Salt Lake City Intl.
$365 Roundtrip, found 5 days ago
$365
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Aug 11 from Helena Regional to Salt Lake City Intl., returning Sat, Aug 16, priced at $365 found 5 days ago
Fri, Sep 12 - Sat, Sep 13
HLN
Helena Regional
SLC
Salt Lake City Intl.
$382 Roundtrip, found 5 days ago
$382
Roundtrip
found 5 days ago
Select Delta flight, departing Fri, Sep 12 from Helena Regional to Salt Lake City Intl., returning Sat, Sep 13, priced at $382 found 5 days ago
Sun, Sep 14 - Sun, Sep 21
HLN
Helena Regional
SLC
Salt Lake City Intl.
$391 Roundtrip, found 5 days ago
$391
Roundtrip
found 5 days ago
Select Delta flight, departing Sun, Sep 14 from Helena Regional to Salt Lake City Intl., returning Sun, Sep 21, priced at $391 found 5 days ago
Thu, Aug 14 - Mon, Aug 18
HLN
Helena Regional
SLC
Salt Lake City Intl.
$395 Roundtrip, found 5 days ago
$395
Roundtrip
found 5 days ago
Select Delta flight, departing Thu, Aug 14 from Helena Regional to Salt Lake City Intl., returning Mon, Aug 18, priced at $395 found 5 days ago
Fri, Sep 12 - Sat, Sep 13
HLN
Helena Regional
SLC
Salt Lake City Intl.
$434 Roundtrip, found 5 days ago
$434
Roundtrip
found 5 days ago
Select Delta flight, departing Fri, Sep 12 from Helena Regional to Salt Lake City Intl., returning Sat, Sep 13, priced at $434 found 5 days ago
Mon, Aug 11 - Mon, Aug 18
HLN
Helena Regional
SLC
Salt Lake City Intl.
$435 Roundtrip, found 5 days ago
$435
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Aug 11 from Helena Regional to Salt Lake City Intl., returning Mon, Aug 18, priced at $435 found 5 days ago
Fri, Sep 12 - Sat, Sep 13
HLN
Helena Regional
SLC
Salt Lake City Intl.
$443 Roundtrip, found 5 days ago
$443
Roundtrip
found 5 days ago
Select Delta flight, departing Fri, Sep 12 from Helena Regional to Salt Lake City Intl., returning Sat, Sep 13, priced at $443 found 5 days 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.