Delta Flight DL378 Deals & Information (2025/2026)

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Delta Flight 378 Route Deals From $70

The cheapest prices found with in the last 7 days for return flights were $145 and $70 for one-way flights to Ronald Reagan Washington National for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Oct 25 - Tue, Oct 28
ATL
Hartsfield-Jackson Atlanta Intl.
DCA
Ronald Reagan Washington National
$145 Roundtrip, found 5 days ago
$145
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Oct 25 from Hartsfield-Jackson Atlanta Intl. to Ronald Reagan Washington National, returning Tue, Oct 28, priced at $145 found 5 days ago
Sat, Aug 9 - Sat, Aug 16
ATL
Hartsfield-Jackson Atlanta Intl.
DCA
Ronald Reagan Washington National
$150 Roundtrip, found 3 days ago
$150
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Aug 9 from Hartsfield-Jackson Atlanta Intl. to Ronald Reagan Washington National, returning Sat, Aug 16, priced at $150 found 3 days ago
Thu, Aug 14 - Tue, Aug 19
ATL
Hartsfield-Jackson Atlanta Intl.
DCA
Ronald Reagan Washington National
$150 Roundtrip, found 8 hours ago
$150
Roundtrip
found 8 hours ago
Select Delta flight, departing Thu, Aug 14 from Hartsfield-Jackson Atlanta Intl. to Ronald Reagan Washington National, returning Tue, Aug 19, priced at $150 found 8 hours ago
Fri, Jul 4 - Tue, Jul 8
ATL
Hartsfield-Jackson Atlanta Intl.
DCA
Ronald Reagan Washington National
$172 Roundtrip, found 3 days ago
$172
Roundtrip
found 3 days ago
Select Delta flight, departing Fri, Jul 4 from Hartsfield-Jackson Atlanta Intl. to Ronald Reagan Washington National, returning Tue, Jul 8, priced at $172 found 3 days ago
Tue, Jul 1 - Tue, Jul 8
ATL
Hartsfield-Jackson Atlanta Intl.
DCA
Ronald Reagan Washington National
$172 Roundtrip, found 4 days ago
$172
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Jul 1 from Hartsfield-Jackson Atlanta Intl. to Ronald Reagan Washington National, returning Tue, Jul 8, priced at $172 found 4 days ago
Sat, Oct 25 - Tue, Oct 28
ATL
Hartsfield-Jackson Atlanta Intl.
DCA
Ronald Reagan Washington National
$180 Roundtrip, found 5 days ago
$180
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Oct 25 from Hartsfield-Jackson Atlanta Intl. to Ronald Reagan Washington National, returning Tue, Oct 28, priced at $180 found 5 days ago
Tue, Jul 1 - Sat, Jul 5
ATL
Hartsfield-Jackson Atlanta Intl.
DCA
Ronald Reagan Washington National
$183 Roundtrip, found 23 hours ago
$183
Roundtrip
found 23 hours ago
Select Delta flight, departing Tue, Jul 1 from Hartsfield-Jackson Atlanta Intl. to Ronald Reagan Washington National, returning Sat, Jul 5, priced at $183 found 23 hours ago
Sat, Aug 9 - Sat, Aug 16
ATL
Hartsfield-Jackson Atlanta Intl.
DCA
Ronald Reagan Washington National
$185 Roundtrip, found 3 days ago
$185
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Aug 9 from Hartsfield-Jackson Atlanta Intl. to Ronald Reagan Washington National, returning Sat, Aug 16, priced at $185 found 3 days ago

Frequently asked questions

What route does flight number DL378 take?
DL378 travels between Hartsfield--Jackson Atlanta International Airport and Salt Lake City Intl. Airport directly. This trip generally takes 4 hours.
How often is DL378 on time?
If you're heading off with Delta flight number DL378 from Hartsfield-Jackson Atlanta Intl. Airport (ATL) to SLC, it's a good thing to know that 100% of these journeys touch down on time. If your plane does happen to be delayed, the average wait is approximately 8 minutes. This service has a 3.85-star rating.
What terminal does DL378 fly out of?
Passengers with seats booked on flight number DL378 from Hartsfield-Jackson Atlanta Intl. Airport (ATL) to Salt Lake City Intl. Airport (SLC) normally jet off from Terminal S.
What kind of plane is on flight number DL378?
The route for flight number DL378 is nearly always ATL to Salt Lake City, UT Airport (SLC-Salt Lake City Intl.), and the Boeing 757 is the type of plane you'll probably be flying 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 DL378 flight with Travelocity, please visit our Customer Service Portal.