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Cheap flights from Seattle to Boise from £85

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

Cheap flight deals from Seattle to Boise

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Boise

Wed 23/1208:39 -
Nonstop1h 34m
Sat 26/1218:09 -
Nonstop1h 56m
Deal found 29/10£155
Wed 16/1209:50 -
Nonstop1h 31m
Fri 1/117:00 -
Nonstop1h 43m
Deal found 30/10£163
Sat 5/1207:00 -
Nonstop1h 30m
Mon 7/1216:47 -
1 stop18h 40m
Deal found 29/10£166
Tue 1/1211:51 -
Nonstop1h 28m
Fri 4/1216:47 -
1 stop17h 45m
Deal found 30/10£169
Thu 17/1219:50 -
Nonstop1h 28m
Fri 1/106:31 -
Nonstop1h 49m
Deal found 30/10£170
Mon 7/1213:00 -
1 stop7h 40m
Sat 12/1207:00 -
1 stop6h 20m
Deal found 27/10£172
Thu 3/1207:00 -
1 stop6h 15m
Mon 7/1212:40 -
1 stop8h 00m
Deal found 29/10£173
Mon 7/1207:00 -
1 stop6h 15m
Tue 15/1212:40 -
2 stops10h 40m
Deal found 27/10£175
Mon 30/1107:15 -
Nonstop1h 29m
Mon 7/1216:47 -
1 stop27h 31m
Deal found 30/10£176

Find flight deals from Seattle to Boise

Round-trip from

£155

One-way from

£85

Popular in

July

Cheapest in

January

Average price

£185
Delta
  • Delta
  • 25/11-2/12
  • Nonstop
  • 3h 30m total
  • Seattle to Boise
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Alaska Airlines
  • Alaska Airlines
  • 15/12-31/12
  • 1 total stop
  • 5h 43m total
  • Seattle to Boise
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£24 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£5 potential savings vs. average return 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 Seattle to Boise that are best for you.

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Route

Depart

Return

Price

Cheapest return flight

SeattleBoise

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

SEABOI

Seattle/Tacoma Intl

Tue 17/11

14:05-23:15

1 stop8h 10m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-23:00

Nonstop0h 00m

£87

SeattleBoise

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

SEABOI

Seattle/Tacoma Intl

Thu 3/12

07:00-14:15

1 stop6h 15m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-23:00

Nonstop0h 00m

£87

SeattleBoise

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

SEABOI

Seattle/Tacoma Intl

Sat 12/12

06:20-18:10

2 stops10h 50m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-23:00

Nonstop0h 00m

£89

SeattleBoise

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

SEABOI

Seattle/Tacoma Intl

Thu 10/12

11:35-21:40

2 stops9h 05m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-23:00

Nonstop0h 00m

£91

SeattleBoise

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

SEABOI

Seattle/Tacoma Intl

Thu 3/12

07:15-09:56

Nonstop1h 41m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-23:00

Nonstop0h 00m

£108
Fastest return journey

SeattleBoise

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

SEABOI

Seattle/Tacoma Intl

Thu 10/12

19:50-22:24

Nonstop1h 34m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-23:00

Nonstop0h 00m

£108

SeattleBoise

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

SEABOI

Seattle/Tacoma Intl

Sun 20/12

10:46-13:30

Nonstop1h 44m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-23:00

Nonstop0h 00m

£108

SeattleBoise

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

SEABOI

Seattle/Tacoma Intl

Sun 13/12

09:01-14:50

1 stop4h 49m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-23:00

Nonstop0h 00m

£124

SeattleBoise

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

SEABOI

Seattle/Tacoma Intl

Wed 23/12

17:25-00:10

1 stop5h 45m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-23:00

Nonstop0h 00m

£138

SeattleBoise

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

SEABOI

Seattle/Tacoma Intl

Wed 25/11

19:50-22:26

Nonstop1h 36m

Boise Air Term. Gowen Fld

Tue 1/12

15:44-16:40

Nonstop1h 56m

£155

Flights are sorted by cheapest return flights first.

Deals found on 26/10

Showing 1-10 of 19 resultsSorted by cheapest first
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Best time to book a flight from Seattle to Boise

Have a flexible travel schedule? Discover the best time to fly to Boise from Seattle with our price prediction graph.
Estimated return price

Cheapflights Insights

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

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

The best time to book flights from Seattle to Boise is 61 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Seattle to Boise (average of £87). Flying from Seattle to Boise in July is currently the most expensive (average of £245). 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 SEA to BOI?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Boise as you normally would.

How much does it cost for a return flight from Seattle to Boise?

Airfare is below average for this route at the moment.

Seattle to Boise flights typically cost between £163 and £332 in December.
The cheapest return price found within the last 5 days was £155 on Delta (23 Dec–26 Dec).

Related info for your journey

  • How long is the flight from Seattle to Boise?

    Delta and Alaska Airlines can get you from Seattle to Boise in just under 1h 28m. Your travel time will be generally consistent. The distance between Seattle and Boise is about 398 mi. Generally, flights for this route are direct.

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

    No one likes to see their flight delayed. When booking a flight from Seattle to Boise consider choosing Korean Air (92%), Aeromexico (91%) or Qatar Airways (90%) as they are the most reliable in getting you off to your destination on time.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Boise 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 Seattle to Boise?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Boise (average of £87). Flying from Seattle to Boise in July is currently the most expensive (average of £245). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Seattle to Boise

Seattle to Spokane flights

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Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Seattle to Boise. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Boise?

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Yes, we can. To see specific flights from Seattle to Boise with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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Yes! Start tracking prices for Seattle to Boise flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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