Delta Flight 3817 Deals & Information (2026/2027)

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Delta Flight 3817 Route Deals From $90

The cheapest prices found with in the last 7 days for return flights were $137 and $90 for one-way flights to Boise for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Apr 4 - Wed, Apr 8
SEA
Seattle - Tacoma Intl.
BOI
Boise
$137 Roundtrip, found 5 days ago
$137
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Apr 4 from Seattle - Tacoma Intl. to Boise, returning Wed, Apr 8, priced at $137 found 5 days ago
Fri, Apr 24 - Sun, Apr 26
SEA
Seattle - Tacoma Intl.
BOI
Boise
$158 Roundtrip, found 3 hours ago
$158
Roundtrip
found 3 hours ago
Select Delta flight, departing Fri, Apr 24 from Seattle - Tacoma Intl. to Boise, returning Sun, Apr 26, priced at $158 found 3 hours ago
Tue, Mar 17 - Wed, Mar 18
SEA
Seattle - Tacoma Intl.
BOI
Boise
$173 Roundtrip, found 6 days ago
$173
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Mar 17 from Seattle - Tacoma Intl. to Boise, returning Wed, Mar 18, priced at $173 found 6 days ago
Fri, Apr 3 - Sat, Apr 4
SEA
Seattle - Tacoma Intl.
BOI
Boise
$183 Roundtrip, found 4 hours ago
$183
Roundtrip
found 4 hours ago
Select Delta flight, departing Fri, Apr 3 from Seattle - Tacoma Intl. to Boise, returning Sat, Apr 4, priced at $183 found 4 hours ago

Frequently asked questions

What route does flight number DL3817 take?
DL3817 flies direct between Seattle - Tacoma Intl. Airport (SEA) and Pasco, WA Airport (PSC-Tri-Cities) in around 1 hour and 4 minutes. It can sometimes take other routes though, some of which could be multi-stop journeys. Keep an eye out for this when booking your airfare to avoid any mix-ups.
What kind of plane is on flight number DL3817?
Chances are you'll be enjoying the services of the Embraer 175 if you've reserved a ticket on flight number DL3817 from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to Tri-Cities Airport (PSC). It's the most commonly used aircraft type on this route.
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 DL3817 flight with Travelocity, please visit our Customer Service Portal.