Delta Flight WN3921 Deals & Information (2025/2026)

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Delta Flight 3921 Route Deals From $86

The cheapest prices found with in the last 7 days for return flights were $209 and $86 for one-way flights to Minneapolis - St. Paul Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Nov 14 - Mon, Nov 17
STL
Lambert-St. Louis Intl.
MSP
Minneapolis - St. Paul Intl.
$209 Roundtrip, found 13 hours ago
$209
Roundtrip
found 13 hours ago
Select Delta flight, departing Fri, Nov 14 from Lambert-St. Louis Intl. to Minneapolis - St. Paul Intl., returning Mon, Nov 17, priced at $209 found 13 hours ago
Fri, Oct 24 - Mon, Oct 27
STL
Lambert-St. Louis Intl.
MSP
Minneapolis - St. Paul Intl.
$213 Roundtrip, found 15 hours ago
$213
Roundtrip
found 15 hours ago
Select Delta flight, departing Fri, Oct 24 from Lambert-St. Louis Intl. to Minneapolis - St. Paul Intl., returning Mon, Oct 27, priced at $213 found 15 hours ago
Thu, Oct 9 - Sun, Oct 12
STL
Lambert-St. Louis Intl.
MSP
Minneapolis - St. Paul Intl.
$216 Roundtrip, found 1 day ago
$216
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Oct 9 from Lambert-St. Louis Intl. to Minneapolis - St. Paul Intl., returning Sun, Oct 12, priced at $216 found 1 day ago
Sat, Jan 17 - Tue, Jan 20
STL
Lambert-St. Louis Intl.
MSP
Minneapolis - St. Paul Intl.
$217 Roundtrip, found 1 day ago
$217
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Jan 17 from Lambert-St. Louis Intl. to Minneapolis - St. Paul Intl., returning Tue, Jan 20, priced at $217 found 1 day ago
Fri, Oct 24 - Mon, Oct 27
STL
Lambert-St. Louis Intl.
MSP
Minneapolis - St. Paul Intl.
$224 Roundtrip, found 15 hours ago
$224
Roundtrip
found 15 hours ago
Select Delta flight, departing Fri, Oct 24 from Lambert-St. Louis Intl. to Minneapolis - St. Paul Intl., returning Mon, Oct 27, priced at $224 found 15 hours ago
Thu, Oct 9 - Sun, Oct 12
STL
Lambert-St. Louis Intl.
MSP
Minneapolis - St. Paul Intl.
$226 Roundtrip, found 1 day ago
$226
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Oct 9 from Lambert-St. Louis Intl. to Minneapolis - St. Paul Intl., returning Sun, Oct 12, priced at $226 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.