FFL Helper
Seattle SEA
$171
BOI → SEA · Alaska Airlines
FFL Helper / Boise / Seattle / August 2026
BOI → SEA · 2026-08
Boise to Seattle in August 2026
Dated one-way fares from Boise to Seattle in August 2026. Use the calendar to see which days are cheaper.
Lowest this month
$171
Highest this month
$171
Sample fare
$171
Airports
BOI–SEA
Ad. Ticket links are affiliate ads. We may earn a commission if you book. Advertising disclosure
Other months: August 2026 · September 2026 · Full route
August 2026 price calendar
August 2026
From $171
Mon
Tue
Wed
Thu
Fri
Sat
Sun
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
$171
31
Dated fares
Booking BOI to SEA in August 2026
This page is only August 2026 on the Boise to Seattle route. Open the full route if you want the next months side by side.
Prices move as seats sell. Confirm the live itinerary before you book Boise to Seattle in August 2026.