Delta Flight DL840 Deals & Information (2025/2026)

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Delta Flight 840 Route Deals From $91

The cheapest prices found with in the last 7 days for return flights were $162 and $91 for one-way flights to Hartsfield-Jackson Atlanta Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Nov 11 - Mon, Nov 17
DEN
Denver Intl.
ATL
Hartsfield-Jackson Atlanta Intl.
$162 Roundtrip, found 6 days ago
$162
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Nov 11 from Denver Intl. to Hartsfield-Jackson Atlanta Intl., returning Mon, Nov 17, priced at $162 found 6 days ago
Mon, Aug 11 - Sat, Aug 16
DEN
Denver Intl.
ATL
Hartsfield-Jackson Atlanta Intl.
$187 Roundtrip, found 4 hours ago
$187
Roundtrip
found 4 hours ago
Select Delta flight, departing Mon, Aug 11 from Denver Intl. to Hartsfield-Jackson Atlanta Intl., returning Sat, Aug 16, priced at $187 found 4 hours ago

Frequently asked questions

What route does flight number DL840 take?
DL840 operates between Hartsfield-Jackson Atlanta Intl. Airport (ATL) and Detroit, MI Airport (DTW-Detroit Metropolitan Wayne County) and is a direct flight. This trip typically takes 1 hour and 51 minutes.
What terminal does DL840 fly out of?
Flights to and from ATL and DTW are served by DL840, and passengers who travel on this route usually leave from Terminal S.
What kind of plane is on flight number DL840?
The Airbus A321 is the type of aircraft that’s generally used for flight number DL840. Typically, this flight departs from Atlanta, GA Airport (ATL-Hartsfield-Jackson Atlanta Intl.) and touches down at Detroit, MI Airport (DTW-Detroit Metropolitan Wayne County).
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 DL840 flight with Travelocity, please visit our Customer Service Portal.