Delta Flight AS3817 Deals & Information (2025/2026)

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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 $157 and $90 for one-way flights to Boise for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Oct 3 - Mon, Oct 6
SEA
Seattle - Tacoma Intl.
BOI
Boise
$157 Roundtrip, found 1 day ago
$157
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Oct 3 from Seattle - Tacoma Intl. to Boise, returning Mon, Oct 6, priced at $157 found 1 day ago
Sun, Oct 19 - Mon, Oct 20
SEA
Seattle - Tacoma Intl.
BOI
Boise
$180 Roundtrip, found 5 days ago
$180
Roundtrip
found 5 days ago
Select Delta flight, departing Sun, Oct 19 from Seattle - Tacoma Intl. to Boise, returning Mon, Oct 20, priced at $180 found 5 days 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.