Delta Flight DL3977 Deals & Information (2025/2026)

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Delta Flight 3977 Route Deals From $193

The cheapest prices found with in the last 7 days for return flights were $299 and $193 for one-way flights to Detroit Metropolitan Wayne County for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Sep 29 - Sat, Oct 4
LEX
Blue Grass
DTW
Detroit Metropolitan Wayne County
$299 Roundtrip, found 4 days ago
$299
Roundtrip
found 4 days ago
Select Delta flight, departing Mon, Sep 29 from Blue Grass to Detroit Metropolitan Wayne County, returning Sat, Oct 4, priced at $299 found 4 days ago
Thu, Jun 19 - Thu, Jun 26
LEX
Blue Grass
DTW
Detroit Metropolitan Wayne County
$368 Roundtrip, found 5 days ago
$368
Roundtrip
found 5 days ago
Select Delta flight, departing Thu, Jun 19 from Blue Grass to Detroit Metropolitan Wayne County, returning Thu, Jun 26, priced at $368 found 5 days ago
Thu, Jun 19 - Tue, Jun 24
LEX
Blue Grass
DTW
Detroit Metropolitan Wayne County
$392 Roundtrip, found 5 days ago
$392
Roundtrip
found 5 days ago
Select Delta flight, departing Thu, Jun 19 from Blue Grass to Detroit Metropolitan Wayne County, returning Tue, Jun 24, priced at $392 found 5 days ago
Sat, Jun 21 - Sun, Jun 22
LEX
Blue Grass
DTW
Detroit Metropolitan Wayne County
$405 Roundtrip, found 4 days ago
$405
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Jun 21 from Blue Grass to Detroit Metropolitan Wayne County, returning Sun, Jun 22, priced at $405 found 4 days ago
Wed, Jun 18 - Wed, Jun 25
LEX
Blue Grass
DTW
Detroit Metropolitan Wayne County
$438 Roundtrip, found 4 days ago
$438
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Jun 18 from Blue Grass to Detroit Metropolitan Wayne County, returning Wed, Jun 25, priced at $438 found 4 days ago
Mon, Sep 29 - Thu, Oct 2
LEX
Blue Grass
DTW
Detroit Metropolitan Wayne County
$439 Roundtrip, found 4 days ago
$439
Roundtrip
found 4 days ago
Select Delta flight, departing Mon, Sep 29 from Blue Grass to Detroit Metropolitan Wayne County, returning Thu, Oct 2, priced at $439 found 4 days ago
Sat, Jun 14 - Sun, Jun 22
LEX
Blue Grass
DTW
Detroit Metropolitan Wayne County
$449 Roundtrip, found 5 days ago
$449
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Jun 14 from Blue Grass to Detroit Metropolitan Wayne County, returning Sun, Jun 22, priced at $449 found 5 days ago
Sun, Jun 15 - Sun, Jun 22
LEX
Blue Grass
DTW
Detroit Metropolitan Wayne County
$454 Roundtrip, found 2 days ago
$454
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Jun 15 from Blue Grass to Detroit Metropolitan Wayne County, returning Sun, Jun 22, priced at $454 found 2 days ago
Mon, Jun 16 - Sun, Jun 22
LEX
Blue Grass
DTW
Detroit Metropolitan Wayne County
$455 Roundtrip, found 2 days ago
$455
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Jun 16 from Blue Grass to Detroit Metropolitan Wayne County, returning Sun, Jun 22, priced at $455 found 2 days ago
Tue, Jun 17 - Sat, Jun 21
LEX
Blue Grass
DTW
Detroit Metropolitan Wayne County
$463 Roundtrip, found 2 days ago
$463
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Jun 17 from Blue Grass to Detroit Metropolitan Wayne County, returning Sat, Jun 21, priced at $463 found 2 days ago

Frequently asked questions

What route does flight number DL3977 take?
Flight number DL3977 takes about 1 hour and 39 minutes to jet non-stop from BOI to Sea-Tac Airport. Sure, there’s magic in the destination, but half the fun is in the journey!
What kind of plane is on flight number DL3977?
Get ready to hop on board an Embraer 175 if you’ve booked a seat on flight DL3977. Almost all services from Boise Airport (BOI) to SEA operate using this aircraft type.
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 DL3977 flight with Travelocity, please visit our Customer Service Portal.