$54+ Cheap flights from Boise to Seattle (BOI - SEA)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SEA
Apr 15 — Apr 221
Round-trip
1 adult, Economy
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Find cheap flights from Boise to Seattle with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Boise Air Term. Gowen Fld to Seattle/Tacoma Intl are usually found in January or February, booked 63 days in advance, depart on a Friday or Thursday and return on a Saturday
Cheap flight deals from Boise to Seattle
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Best
Last-minute
One-way
Cheapest flights from Boise to SeattleExplore the most affordable flight options available from Boise to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 16, 2026.
Explore the most affordable flight options available from Boise to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 16, 2026.
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/107:30 pm
BOI
- SEA
Nonstop1h 48m
Delta
Sat 4/117:15 am
SEA
- BOI
Nonstop1h 40m
Delta
Deal found 3/10![Delta logo]()
$99
This Delta deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/97:30 pm
BOI
- SEA
Nonstop1h 48m
Delta
Sun 4/127:15 am
SEA
- BOI
Nonstop1h 40m
Delta
Deal found 3/12![Delta logo]()
$108
This Alaska Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/811:58 am
BOI
- SEA
Nonstop1h 42m
Alaska Airlines
Thu 4/165:23 pm
SEA
- BOI
Nonstop1h 25m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$117
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/71:45 pm
BOI
- SEA
Nonstop1h 42m
Delta
Tue 4/149:40 pm
SEA
- BOI
Nonstop1h 37m
Delta
Deal found 3/10![Delta logo]()
$118
This Delta deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/178:40 pm
BOI
- SEA
Nonstop1h 52m
Delta
Sun 4/197:20 am
SEA
- BOI
Nonstop1h 41m
Delta
Deal found 3/13![Delta logo]()
$119
This Trip.com deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/106:00 am
BOI
- SEA
Nonstop1h 43m
Hawaiian Airlines
Sun 4/127:49 am
SEA
- BOI
Nonstop1h 32m
Hawaiian Airlines
Deal found 3/11![Hawaiian Airlines logo]()
$131
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/99:00 am
BOI
- SEA
Nonstop1h 49m
Delta
Fri 4/1010:35 am
SEA
- BOI
Nonstop1h 30m
Delta
Deal found 3/10![Delta logo]()
$137
This Delta deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/127:30 am
BOI
- SEA
Nonstop1h 47m
Delta
Sun 4/199:40 pm
SEA
- BOI
Nonstop1h 37m
Delta
Deal found 3/15![Delta logo]()
$138
This Alaska Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:00 am
BOI
- SEA
Nonstop1h 43m
Alaska Airlines
Sat 4/187:49 am
SEA
- BOI
Nonstop1h 32m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$148
This Southwest deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/155:00 pm
BOI
- SEA
1 stop6h 55m
Southwest
Sun 4/195:00 am
SEA
- BOI
1 stop3h 55m
Southwest
Deal found 3/11![Southwest logo]()
$151
This Southwest deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/155:00 pm
BOI
- SEA
1 stop6h 55m
Southwest
Wed 4/2211:35 am
SEA
- BOI
2 stops10h 55m
Southwest
Deal found 3/11![Southwest logo]()
$156
This Expedia deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/36:00 am
BOI
- SEA
Nonstop1h 43m
Alaska Airlines
Mon 4/68:27 pm
SEA
- BOI
Nonstop1h 30m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$157
Best flights from Boise to SeattleDiscover carefully curated flight deals from Boise to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 16, 2026.
Discover carefully curated flight deals from Boise to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 16, 2026.
This Delta deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/109:16 pm
BOI
- SEA
Nonstop1h 49m
Delta
Thu 5/147:15 am
SEA
- BOI
Nonstop1h 39m
Delta
Deal found 3/12![Delta logo]()
$117
This Alaska Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1411:58 am
BOI
- SEA
Nonstop1h 42m
Alaska Airlines
Sat 4/187:49 am
SEA
- BOI
Nonstop1h 32m
Alaska Airlines
Deal found 3/14![Alaska Airlines logo]()
$137
This Southwest deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/135:00 pm
BOI
- SEA
1 stop6h 55m
Southwest
Sun 5/175:00 am
SEA
- BOI
1 stop3h 55m
Southwest
Deal found 3/13![Southwest logo]()
$151
This Delta deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/31:45 pm
BOI
- SEA
Nonstop1h 42m
Delta
Thu 4/96:30 pm
SEA
- BOI
Nonstop1h 31m
Delta
Deal found 3/11![Delta logo]()
$137
This Southwest deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/244:20 pm
BOI
- SEA
1 stop8h 10m
Southwest
Tue 4/2811:40 am
SEA
- BOI
2 stops10h 50m
Southwest
Deal found 3/11![Southwest logo]()
$156
This Alaska Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1311:58 am
BOI
- SEA
Nonstop1h 42m
Alaska Airlines
Wed 4/159:16 am
SEA
- BOI
1 stop5h 15m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$190
This Delta deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/156:00 pm
BOI
- SEA
Nonstop1h 42m
Delta
Sat 5/239:00 am
SEA
- BOI
Nonstop1h 35m
Delta
Deal found 3/11![Delta logo]()
$183
This Alaska Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2011:58 am
BOI
- SEA
Nonstop1h 42m
Alaska Airlines
Mon 4/276:30 pm
SEA
- BOI
1 stop4h 29m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$210
This Southwest deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:05 am
BOI
- SEA
1 stop7h 20m
Southwest
Fri 4/1712:55 pm
SEA
- BOI
2 stops11h 05m
Southwest
Deal found 3/11![Southwest logo]()
$259
This Alaska Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:00 am
BOI
- SEA
Nonstop1h 43m
Alaska Airlines
Sun 4/198:10 pm
SEA
- BOI
1 stop25h 54m
Alaska Airlines
Deal found 3/14![Alaska Airlines logo]()
$240
Last-minute flights from Boise to SeattleDiscover last-minute flight deals from Boise to Seattle. Data last updated March 16, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Seattle. Data last updated March 16, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/64:43 pm
BOI
- SEA
Nonstop1h 42m
Delta
Mon 4/136:50 pm
SEA
- BOI
Nonstop1h 34m
Delta
Deal found 3/12![Delta logo]()
$118
This CheapOair deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/79:55 am
BOI
- SEA
Nonstop1h 35m
Alaska Airlines
Sat 4/115:23 pm
SEA
- BOI
Nonstop1h 25m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$157
This Delta deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/97:30 pm
BOI
- SEA
Nonstop1h 48m
Delta
Sun 4/127:15 am
SEA
- BOI
Nonstop1h 40m
Delta
Deal found 3/12![Delta logo]()
$108
This CheapOair deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/98:20 am
BOI
- SEA
Nonstop1h 44m
Alaska Airlines
Sat 4/119:29 pm
SEA
- BOI
Nonstop1h 27m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$137
This Delta deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/105:52 am
BOI
- SEA
Nonstop1h 48m
Delta
Sun 4/127:15 am
SEA
- BOI
Nonstop1h 40m
Delta
Deal found 3/11![Delta logo]()
$99
This Trip.com deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/106:00 am
BOI
- SEA
Nonstop1h 43m
Hawaiian Airlines
Sun 4/127:49 am
SEA
- BOI
Nonstop1h 32m
Hawaiian Airlines
Deal found 3/11![Hawaiian Airlines logo]()
$131
This Delta deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/127:30 am
BOI
- SEA
Nonstop1h 47m
Delta
Sun 4/199:40 pm
SEA
- BOI
Nonstop1h 37m
Delta
Deal found 3/15![Delta logo]()
$138
This Alaska Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:00 am
BOI
- SEA
Nonstop1h 43m
Alaska Airlines
Sat 4/187:49 am
SEA
- BOI
Nonstop1h 32m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$148
This Southwest deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/155:00 pm
BOI
- SEA
1 stop6h 55m
Southwest
Sun 4/195:00 am
SEA
- BOI
1 stop3h 55m
Southwest
Deal found 3/11![Southwest logo]()
$151
This Southwest deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/155:00 pm
BOI
- SEA
1 stop6h 55m
Southwest
Wed 4/2211:35 am
SEA
- BOI
2 stops10h 55m
Southwest
Deal found 3/11![Southwest logo]()
$156
This Delta deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/178:40 pm
BOI
- SEA
Nonstop1h 52m
Delta
Sun 4/197:20 am
SEA
- BOI
Nonstop1h 41m
Delta
Deal found 3/13![Delta logo]()
$119
This CheapOair deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/246:00 am
BOI
- SEA
Nonstop1h 40m
Alaska Airlines
Sat 5/210:06 am
SEA
- BOI
Nonstop1h 29m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$117
One-way flights from Boise to SeattleSearch for one-way flight options from Boise to Seattle. Find affordable one-way fares based on user searches. Data last updated March 16, 2026.
Search for one-way flight options from Boise to Seattle. Find affordable one-way fares based on user searches. Data last updated March 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/28:20 am
BOI
- SEA
Nonstop1h 44m
Hawaiian Airlines
Deal found 3/11![Hawaiian Airlines logo]()
$54
This Trip.com deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:00 am
BOI
- SEA
Nonstop1h 43m
Hawaiian Airlines
Deal found 3/11![Hawaiian Airlines logo]()
$57
This Delta deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/109:00 am
BOI
- SEA
Nonstop1h 49m
Delta
Deal found 3/12![Delta logo]()
$59
This Delta deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/39:00 am
BOI
- SEA
Nonstop1h 49m
Delta
Deal found 3/13![Delta logo]()
$69
This Southwest deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/15:55 pm
BOI
- SEA
1 stop5h 30m
Southwest
Deal found 3/11![Southwest logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/212:03 pm
BOI
- SEA
1 stop24h 34m
Frontier
Deal found 3/12![Frontier logo]()
$78
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:05 am
BOI
- SEA
1 stop7h 20m
Southwest
Deal found 3/14![Southwest logo]()
$79
This Delta deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/145:40 am
BOI
- SEA
Nonstop1h 48m
Delta
Deal found 3/13![Delta logo]()
$80
This Southwest deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:00 am
BOI
- SEA
2 stops12h 45m
Southwest
Deal found 3/13![Southwest logo]()
$84
This Alaska Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:00 am
BOI
- SEA
Nonstop1h 43m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$89
Find flight deals from Boise to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $99 (Delta) |
One-way from | $54 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $207 |
Good round-trip deal | $292 or less |
Good one-way deal | $160 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Boise to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 16, 2026.
Use the filters below to find and compare flights from Boise to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseSeattle
BOI - SEA
BOISEA
Boise Air Term. Gowen Fld
Sun 5/10
9:16 pm-10:05 pm
Nonstop1h 49m
Seattle/Tacoma Intl
Thu 5/14
7:15 am-9:54 am
Nonstop1h 39m
$117
BoiseSeattle
BOI - SEA
BOISEA
Boise Air Term. Gowen Fld
Tue 4/14
11:58 am-12:40 pm
Nonstop1h 42m
Seattle/Tacoma Intl
Sat 4/18
7:49 am-10:21 am
Nonstop1h 32m
$137
Quickest round-trip
BoiseSeattle
BOI - SEA
BOISEA
Boise Air Term. Gowen Fld
Fri 4/3
1:45 pm-2:27 pm
Nonstop1h 42m
Seattle/Tacoma Intl
Thu 4/9
6:30 pm-9:01 pm
Nonstop1h 31m
$137
BoiseSeattle
BOI - SEA
BOISEA
Boise Air Term. Gowen Fld
Wed 5/13
5:00 pm-10:55 pm
1 stop6h 55m
Seattle/Tacoma Intl
Sun 5/17
5:00 am-9:55 am
1 stop3h 55m
$151
BoiseSeattle
BOI - SEA
BOISEA
Boise Air Term. Gowen Fld
Fri 4/24
4:20 pm-11:30 pm
1 stop8h 10m
Seattle/Tacoma Intl
Tue 4/28
11:40 am-11:30 pm
2 stops10h 50m
$156
BoiseSeattle
BOI - SEA
BOISEA
Boise Air Term. Gowen Fld
Fri 5/15
6:00 pm-6:42 pm
Nonstop1h 42m
Seattle/Tacoma Intl
Sat 5/23
9:00 am-11:35 am
Nonstop1h 35m
$183
BoiseSeattle
BOI - SEA
BOISEA
Boise Air Term. Gowen Fld
Mon 4/13
11:58 am-12:40 pm
Nonstop1h 42m
Seattle/Tacoma Intl
Wed 4/15
9:16 am-3:31 pm
1 stop5h 15m
$190
BoiseSeattle
BOI - SEA
BOISEA
Boise Air Term. Gowen Fld
Mon 4/20
11:58 am-12:40 pm
Nonstop1h 42m
Seattle/Tacoma Intl
Mon 4/27
6:30 pm-11:59 pm
1 stop4h 29m
$210
BoiseSeattle
BOI - SEA
BOISEA
Boise Air Term. Gowen Fld
Fri 4/17
6:00 am-6:43 am
Nonstop1h 43m
Seattle/Tacoma Intl
Sun 4/19
8:10 pm-11:04 pm
1 stop25h 54m
$240
BoiseSeattle
BOI - SEA
BOISEA
Boise Air Term. Gowen Fld
Wed 4/15
7:05 am-1:25 pm
1 stop7h 20m
Seattle/Tacoma Intl
Fri 4/17
12:55 pm-1:00 am
2 stops11h 05m
$259
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Boise to Seattle
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boise to Seattle in March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Boise-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boise-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boise-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Boise to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Boise with our price prediction graph.
BOI-SEA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Boise to Seattle
Prices
Airlines
Delays
How far ahead should I book a flight from Boise to Seattle?
Use this chart to determine the optimal time to book a round-trip flight from Boise to Seattle. Price data was last updated on March 13, 2026.
Booking 58 days in advance of your planned departure date is, on average, the best time to get cheap flights from Boise to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Boise to Seattle?
Currently, April is the cheapest month in which you can book a flight from Boise to Seattle (average of $79). Flying from Boise to Seattle in July is currently the most expensive (average of $197). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from BOI to SEA?
Find hourly flight availability from Boise to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 16, 2026.
When flying from Boise to Seattle, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 19% versus a flight in the morning.
What is the cheapest day to fly from Boise to Seattle?
Use this chart to determine the cheapest time to fly round-trip from Boise to Seattle. Price data was last updated on March 14, 2026.
Travelers seeking maximum savings on their Boise to Seattle flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
How often are flights from Boise to Seattle delayed?
About 12% of weekly flights between Boise and Seattle have experienced delays in the past year, with the average delay time being 115 minutes.
What is the most punctual flight time for Boise to Seattle flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Boise to Seattle flights?
Over the last year, Delta have had the lowest number of delays on this route, with just 7% of flights being delayed.
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated March 16, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Delta, andHawaiian Airlines from Boise to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.5
Comfort
7.8
Overall
7.9
Entertainment
7.0
Food
7.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Boarding
8.1
Crew
8.5
Comfort
7.8
Overall
7.9
Entertainment
7.0
Food
7.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Boarding
8.1
Crew
8.5
Comfort
7.8
Overall
7.9
Entertainment
7.0
Food
7.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Boarding
8.1
Crew
8.5
Comfort
7.8
Overall
7.9
Entertainment
7.0
Food
7.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Related info for your journey
Find useful and relevant information for your journey from Boise to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Tacoma
Ocean Shores
Olympia
Kent
Lynnwood
Edmonds
Lacey
Renton
Puyallup
Kirkland
Ellensburg
Tukwila
Fife
Lakewood
Aberdeen
Shoreline
Marysville
Centralia
Federal Way
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Boise and Seattle flights
Browse other Boise and Seattle flight options. Last updated on March 16, 2026.
Other flights from Boise
Browse through other flights departing from Boise. Flights are based on user searches made on Cheapflights and were last updated on March 16, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Other flights to Seattle
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on March 16, 2026.
Top 3 airlines flying from Boise to Seattle
Discover the top 3 airlines that operate flights from Boise to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$98 | Average$197 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$99 | Average$197 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$117 | Average$197 | FlexibilityNo cancel fee | On-time85% |