Delta Flight 4001 Deals & Information (2026/2027)

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Delta Flight 4001 Route Deals From $241

The cheapest prices found with in the last 7 days for return flights were $239 and $241 for one-way flights to San Diego Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Jul 31 - Sat, Aug 1
LAX
Los Angeles Intl.
SAN
San Diego Intl.
$239 Roundtrip, found 1 day ago
$239
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Jul 31 from Los Angeles Intl. to San Diego Intl., returning Sat, Aug 1, priced at $239 found 1 day ago
Mon, Jul 13 - Mon, Jul 20
LAX
Los Angeles Intl.
SAN
San Diego Intl.
$264 Roundtrip, found 2 days ago
$264
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Jul 13 from Los Angeles Intl. to San Diego Intl., returning Mon, Jul 20, priced at $264 found 2 days ago
Sun, Oct 18 - Sun, Oct 25
LAX
Los Angeles Intl.
SAN
San Diego Intl.
$269 Roundtrip, found 3 days ago
$269
Roundtrip
found 3 days ago
Select Delta flight, departing Sun, Oct 18 from Los Angeles Intl. to San Diego Intl., returning Sun, Oct 25, priced at $269 found 3 days ago
Fri, May 29 - Sat, May 30
LAX
Los Angeles Intl.
SAN
San Diego Intl.
$270 Roundtrip, found 6 days ago
$270
Roundtrip
found 6 days ago
Select Delta flight, departing Fri, May 29 from Los Angeles Intl. to San Diego Intl., returning Sat, May 30, priced at $270 found 6 days ago
Tue, May 12 - Sat, May 16
LAX
Los Angeles Intl.
SAN
San Diego Intl.
$291 Roundtrip, found 1 day ago
$291
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, May 12 from Los Angeles Intl. to San Diego Intl., returning Sat, May 16, priced at $291 found 1 day ago
Mon, Feb 8 - Fri, Feb 19
LAX
Los Angeles Intl.
SAN
San Diego Intl.
$299 Roundtrip, found 3 days ago
$299
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, Feb 8 from Los Angeles Intl. to San Diego Intl., returning Fri, Feb 19, priced at $299 found 3 days ago
Thu, May 7 - Sun, May 10
LAX
Los Angeles Intl.
SAN
San Diego Intl.
$306 Roundtrip, found 1 day ago
$306
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, May 7 from Los Angeles Intl. to San Diego Intl., returning Sun, May 10, priced at $306 found 1 day ago
Sun, Jun 21 - Sun, Jun 28
LAX
Los Angeles Intl.
SAN
San Diego Intl.
$332 Roundtrip, found 1 day ago
$332
Roundtrip
found 1 day ago
Select Delta flight, departing Sun, Jun 21 from Los Angeles Intl. to San Diego Intl., returning Sun, Jun 28, priced at $332 found 1 day ago

Frequently asked questions

What route does flight number DL4001 take?
DL4001 jets between Salt Lake City, UT Airport (SLC-Salt Lake City Intl.) and Palm Springs Intl. Airport (PSP) directly. This service generally takes 1 hour and 42 minutes.
What kind of plane is on flight number DL4001?
The route for flight number DL4001 is predominantly SLC to Palm Springs Airport, and the Embraer 175 is the aircraft model you'll probably be heading off on.
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 DL4001 flight with Travelocity, please visit our Customer Service Portal.