Delta Flight 3685 Deals & Information (2026/2027)

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Delta Flight 3685 Route Deals From $254

The cheapest prices found with in the last 7 days for return flights were $299 and $254 for one-way flights to Birmingham Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Oct 27 - Sat, Oct 31
DTW
Detroit Metropolitan Wayne County
BHM
Birmingham Intl.
$299 Roundtrip, found 2 days ago
$299
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Oct 27 from Detroit Metropolitan Wayne County to Birmingham Intl., returning Sat, Oct 31, priced at $299 found 2 days ago
Fri, Sep 11 - Sun, Sep 13
DTW
Detroit Metropolitan Wayne County
BHM
Birmingham Intl.
$306 Roundtrip, found 4 days ago
$306
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Sep 11 from Detroit Metropolitan Wayne County to Birmingham Intl., returning Sun, Sep 13, priced at $306 found 4 days ago
Tue, Oct 27 - Sat, Oct 31
DTW
Detroit Metropolitan Wayne County
BHM
Birmingham Intl.
$309 Roundtrip, found 2 days ago
$309
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Oct 27 from Detroit Metropolitan Wayne County to Birmingham Intl., returning Sat, Oct 31, priced at $309 found 2 days ago
Fri, Sep 11 - Sun, Sep 13
DTW
Detroit Metropolitan Wayne County
BHM
Birmingham Intl.
$316 Roundtrip, found 4 days ago
$316
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Sep 11 from Detroit Metropolitan Wayne County to Birmingham Intl., returning Sun, Sep 13, priced at $316 found 4 days ago
Tue, Oct 27 - Sat, Oct 31
DTW
Detroit Metropolitan Wayne County
BHM
Birmingham Intl.
$349 Roundtrip, found 2 days ago
$349
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Oct 27 from Detroit Metropolitan Wayne County to Birmingham Intl., returning Sat, Oct 31, priced at $349 found 2 days ago
Fri, Sep 11 - Sun, Sep 13
DTW
Detroit Metropolitan Wayne County
BHM
Birmingham Intl.
$357 Roundtrip, found 4 days ago
$357
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Sep 11 from Detroit Metropolitan Wayne County to Birmingham Intl., returning Sun, Sep 13, priced at $357 found 4 days ago
Fri, Sep 11 - Sun, Sep 13
DTW
Detroit Metropolitan Wayne County
BHM
Birmingham Intl.
$367 Roundtrip, found 4 days ago
$367
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Sep 11 from Detroit Metropolitan Wayne County to Birmingham Intl., returning Sun, Sep 13, priced at $367 found 4 days ago
Thu, Aug 13 - Sun, Aug 16
DTW
Detroit Metropolitan Wayne County
BHM
Birmingham Intl.
$419 Roundtrip, found 4 hours ago
$419
Roundtrip
found 4 hours ago
Select Delta flight, departing Thu, Aug 13 from Detroit Metropolitan Wayne County to Birmingham Intl., returning Sun, Aug 16, priced at $419 found 4 hours ago
Thu, Aug 13 - Sun, Aug 16
DTW
Detroit Metropolitan Wayne County
BHM
Birmingham Intl.
$439 Roundtrip, found 4 hours ago
$439
Roundtrip
found 4 hours ago
Select Delta flight, departing Thu, Aug 13 from Detroit Metropolitan Wayne County to Birmingham Intl., returning Sun, Aug 16, priced at $439 found 4 hours ago

Frequently asked questions

What route does flight number DL3685 take?
DL3685 is used on multiple routes. Most often, DL3685 flies directly from Tri-Cities Airport to Seattle - Tacoma Intl. Airport (SEA). If this is your route, you'll be airborne for roughly 1 hour and 8 minutes.
How often is DL3685 on time?
Delta flight number DL3685 between PSC and Seattle - Tacoma Intl. Airport (SEA) runs according to schedule 98% of the time, which means you can take it easy knowing you will get to your destination ASAP. In the rare event that it is behind schedule, it is delayed on average by 28 minutes. This flight has a 3.85-star rating.
What kind of plane is on flight number DL3685?
It's possible you'll be on board an Embraer 175 if you're going from Pasco, WA Airport (PSC-Tri-Cities) to Seattle - Tacoma Intl. Airport (SEA), a common route for flight number DL3685.
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 DL3685 flight with Travelocity, please visit our Customer Service Portal.