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Cheap flights from Boise to Seattle from C$ 159

BOI — SEA
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Boise to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Boise to Seattle

Sun 6/126:35 a.m. -
Nonstop2h 01m
Wed 16/129:03 a.m. -
Nonstop1h 37m
Deal found 28/10C$ 304
Sat 28/116:40 a.m. -
Nonstop2h 00m
Sun 29/119:20 p.m. -
Nonstop1h 30m
Deal found 27/10C$ 305
Tue 8/1210:16 a.m. -
1 stop23h 00m
Wed 9/1211:51 a.m. -
Nonstop1h 28m
Deal found 26/10C$ 309
Tue 1/126:00 p.m. -
Nonstop1h 50m
Tue 8/125:51 p.m. -
1 stop27h 36m
Deal found 29/10C$ 310
Sat 5/126:37 a.m. -
Nonstop1h 48m
Tue 8/128:09 p.m. -
1 stop25h 18m
Deal found 30/10C$ 315
Fri 11/127:18 p.m. -
Nonstop1h 56m
Sun 13/129:03 a.m. -
Nonstop1h 37m
Deal found 30/10C$ 317
Mon 7/1212:40 p.m. -
1 stop8h 00m
Tue 15/122:05 p.m. -
1 stop8h 10m
Deal found 27/10C$ 320
Tue 17/1112:00 p.m. -
1 stop5h 27m
Wed 18/119:05 a.m. -
1 stop6h 37m
Deal found 27/10C$ 323
Fri 11/124:47 p.m. -
1 stop17h 45m
Sun 13/121:02 p.m. -
Nonstop1h 24m
Deal found 29/10C$ 324
Mon 7/1212:40 p.m. -
1 stop8h 00m
Wed 9/1211:35 a.m. -
2 stops9h 05m
Deal found 27/10C$ 327
Tue 24/116:33 a.m. -
Nonstop1h 47m
Tue 1/128:09 p.m. -
1 stop25h 18m
Deal found 25/10C$ 329
Thu 10/1212:40 p.m. -
1 stop8h 00m
Thu 17/126:45 a.m. -
2 stops7h 30m
Deal found 25/10C$ 330

Find flight deals from Boise to Seattle

Round-trip from

C$ 304

One-way from

C$ 159

Popular in

June

Cheapest in

January

Average price

C$ 350
Delta
  • Delta
  • 6/12-16/12
  • Nonstop
  • 3h 38m total
  • Boise to Seattle
Search Deals
Southwest
  • Southwest
  • 22/12-31/12
  • 1 total stop
  • 8h 00m total
  • Boise to Seattle
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (C$ 106 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2026
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Cheapflights Fare Finder

 
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

Price

Cheapest round-trip

BoiseSeattle

BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl

BOISEA

Boise Air Term. Gowen Fld

Tue 15/12

3:45 p.m.-10:20 p.m.

1 stop7h 35m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 159

BoiseSeattle

BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl

BOISEA

Boise Air Term. Gowen Fld

Sat 5/12

4:35 p.m.-8:10 p.m.

1 stop4h 35m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 159

BoiseSeattle

BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl

BOISEA

Boise Air Term. Gowen Fld

Tue 22/12

6:10 p.m.-1:10 a.m.

1 stop8h 00m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 159

BoiseSeattle

BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl

BOISEA

Boise Air Term. Gowen Fld

Mon 14/12

8:15 a.m.-2:23 p.m.

1 stop7h 08m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 162

BoiseSeattle

BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl

BOISEA

Boise Air Term. Gowen Fld

Thu 3/12

6:40 p.m.-10:20 p.m.

1 stop4h 40m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 162
Quickest round-trip

BoiseSeattle

BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl

BOISEA

Boise Air Term. Gowen Fld

Tue 22/12

6:31 a.m.-7:20 a.m.

Nonstop1h 49m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 187

BoiseSeattle

BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl

BOISEA

Boise Air Term. Gowen Fld

Sat 5/12

8:59 a.m.-10:09 a.m.

Nonstop2h 10m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 187

BoiseSeattle

BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl

BOISEA

Boise Air Term. Gowen Fld

Thu 3/12

8:59 a.m.-10:09 a.m.

Nonstop2h 10m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 201

BoiseSeattle

BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl

BOISEA

Boise Air Term. Gowen Fld

Thu 24/12

6:31 a.m.-7:20 a.m.

Nonstop1h 49m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 201

BoiseSeattle

BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl

BOISEA

Boise Air Term. Gowen Fld

Sat 5/12

8:56 a.m.-10:07 p.m.

2 stops14h 11m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 218

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/10

Showing 1-10 of 21 resultsSorted by cheapest first
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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.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Boise to Seattle

How far ahead should I book a flight from Boise to Seattle?

The price you pay for your flight from Boise to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 57 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Boise to Seattle?

Currently, January is the cheapest month in which you can book a flight from Boise to Seattle (average of C$ 194). Flying from Boise to Seattle in June is currently the most expensive (average of C$ 463). 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?

A simple way to save on the total cost of your ticket is to fly from Boise to Seattle at noon. If you’re flexible enough to do this you can expect to save up to 74% on your trip compared to booking a flight in the morning.

How much does it cost to fly round-trip from Boise to Seattle?

Airfare is typical for this route at the moment.

Boise to Seattle flights typically cost between C$ 291 and C$ 541 in December.
The cheapest round-trip price found within the last 5 days was C$ 304 on Delta (6 Dec-16 Dec).

Related info for your journey

  • How popular is this Boise to Seattle flight route?

    This flight path from Boise Air Term. Gowen Fld to Seattle/Tacoma Intl was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Boise to Seattle?

    There are many flights that can get you from Boise to Seattle in 1h 38m. Fly via Alaska Airlines, Delta, or United Airlines to get the fastest option. The distance from Boise to Seattle is about 641 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most reliable airlines from Boise to Seattle?

    No one likes to see their flight delayed. When booking a flight from Boise to Seattle consider choosing Aeromexico (89%), Korean Air (83%) or Air France (81%) as they are the most reliable in getting you off to your destination on time.

  • Can I find deals for flights from Boise to Seattle that include hotel bookings?

    Yes. In addition to deals on Boise to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boise to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boise to Seattle.

  • Can I find deals for business class flights from Boise to Seattle?

    Yes. Cheapflights offers flight deals from Boise to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boise to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Boise to Seattle (average of C$ 194). Flying from Boise to Seattle in June is currently the most expensive (average of C$ 463). 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.

See more FAQs

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Kent
Tukwila
Mukilteo
Ellensburg
Renton
Lynnwood
Cashmere
Tacoma
Marysville
Federal Way
Kirkland
Leavenworth

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How does Cheapflights help users find flights from Boise to Seattle?

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Can Cheapflights find flights from Boise to Seattle with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Boise to Seattle, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Boise to Seattle become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Seattle from Boise today and book when prices fit your budget.

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