Delta Flight 3685 Deals & Information (2026/2027)

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Delta Flight 3685 Route Deals From $250

The cheapest prices found with in the last 7 days for return flights were $337 and $250 for one-way flights to Birmingham Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Oct 23 - Mon, Oct 26
DTW
Detroit Metropolitan Wayne County
BHM
Birmingham Intl.
$337 Roundtrip, found 1 day ago
$337
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Oct 23 from Detroit Metropolitan Wayne County to Birmingham Intl., returning Mon, Oct 26, priced at $337 found 1 day ago
Fri, Oct 23 - Mon, Oct 26
DTW
Detroit Metropolitan Wayne County
BHM
Birmingham Intl.
$347 Roundtrip, found 1 day ago
$347
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Oct 23 from Detroit Metropolitan Wayne County to Birmingham Intl., returning Mon, Oct 26, priced at $347 found 1 day ago
Fri, Oct 23 - Mon, Oct 26
DTW
Detroit Metropolitan Wayne County
BHM
Birmingham Intl.
$357 Roundtrip, found 1 day ago
$357
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Oct 23 from Detroit Metropolitan Wayne County to Birmingham Intl., returning Mon, Oct 26, priced at $357 found 1 day ago
Fri, Sep 11 - Sun, Sep 13
DTW
Detroit Metropolitan Wayne County
BHM
Birmingham Intl.
$399 Roundtrip, found 6 days ago
$399
Roundtrip
found 6 days ago
Select Delta flight, departing Fri, Sep 11 from Detroit Metropolitan Wayne County to Birmingham Intl., returning Sun, Sep 13, priced at $399 found 6 days ago
Fri, Sep 4 - Sat, Sep 5
DTW
Detroit Metropolitan Wayne County
BHM
Birmingham Intl.
$415 Roundtrip, found 1 day ago
$415
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Sep 4 from Detroit Metropolitan Wayne County to Birmingham Intl., returning Sat, Sep 5, priced at $415 found 1 day 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.