Delta Flight 3921 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 3921 Route Deals From $148

The cheapest prices found with in the last 7 days for return flights were $255 and $148 for one-way flights to Tri-Cities for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jan 14 - Wed, Jan 21
SLC
Salt Lake City Intl.
PSC
Tri-Cities
$255 Roundtrip, found 1 day ago
$255
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Jan 14 from Salt Lake City Intl. to Tri-Cities, returning Wed, Jan 21, priced at $255 found 1 day ago
Thu, Jan 15 - Sun, Jan 18
SLC
Salt Lake City Intl.
PSC
Tri-Cities
$452 Roundtrip, found 1 day ago
$452
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Jan 15 from Salt Lake City Intl. to Tri-Cities, returning Sun, Jan 18, priced at $452 found 1 day ago

Frequently asked questions

What route does flight number DL3921 take?
DL3921 is used on a range of routes. Mostly, DL3921 flies directly from LAX to Phoenix Sky Harbor Intl. Airport. If this is your route, you'll be traveling for approximately 1 hour and 29 minutes.
What terminal does DL3921 fly out of?
DL3921 flights out of LAX usually leave from Terminal 2. This flight number runs on a number of different routes, but the most popular is LAX to Phoenix, AZ Airport (PHX-Sky Harbor Intl.).
What kind of plane is on flight number DL3921?
Chances are you'll be aboard an Embraer 175 if you've booked a ticket from Los Angeles, CA Airport (LAX-Los Angeles Intl.) to Phoenix Sky Harbor Intl. Airport, one of several routes used for flight DL3921.
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 DL3921 flight with Travelocity, please visit our Customer Service Portal.