Delta Flight 2451 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 2451 Route Deals From $189

The cheapest prices found with in the last 7 days for return flights were $249 and $189 for one-way flights to Louisville Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Sep 12 - Mon, Sep 15
ATL
Hartsfield-Jackson Atlanta Intl.
SDF
Louisville Intl.
$249 Roundtrip, found 11 hours ago
$249
Roundtrip
found 11 hours ago
Select Delta flight, departing Fri, Sep 12 from Hartsfield-Jackson Atlanta Intl. to Louisville Intl., returning Mon, Sep 15, priced at $249 found 11 hours ago

Frequently asked questions

What route does flight number DL2451 take?
DL2451 serves multiple routes, but the most common is between Sky Harbor Intl. Airport (PHX) and Hartsfield–Jackson Atlanta International Airport. If on a non-stop flight, you’ll arrive in roughly 3 hours and 39 minutes. Multi-stop flights can also use the same number, as can flights on other routes.
What terminal does DL2451 fly out of?
Terminal 3 is the terminal you’ll likely take off from if you’re booked on a flight leaving from Phoenix, AZ Airport (PHX-Sky Harbor Intl.). Phoenix, AZ Airport (PHX-Sky Harbor Intl.) to Hartsfield-Jackson Atlanta Intl. Airport (ATL) is the most commonly traveled route for flight number DL2451.
What kind of plane is on flight number DL2451?
It’s possible you’ll be heading off on the Airbus A321 if you’ve booked a seat from PHX to ATL, one route used for flight DL2451.
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 DL2451 flight with Travelocity, please visit our Customer Service Portal.