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159 € Cheap Flights from Boise to Seattle

Compare Boise to Seattle flight deals

Find the cheapest month or even day of the year to fly to Seattle

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Flight deals from Boise to Seattle

Looking for a cheap last-minute deal or the best return flight from Boise Airport to Seattle? If you want to travel next month, return fares start from 159 €. Find the lowest prices on one-way and return tickets right here.
Seattle.159 € per passenger.Departing Sat, 29 Aug, returning Sun, 30 Aug.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Sat, 29 Aug, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Sun, 30 Aug, arriving in Boise.Price includes taxes and charges.From 159 €, select.
Seattle.160 € per passenger.Departing Wed, 30 Sep, returning Mon, 5 Oct.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Wed, 30 Sep, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Mon, 5 Oct, arriving in Boise.Price includes taxes and charges.From 160 €, select.
Seattle.160 € per passenger.Departing Thu, 1 Oct, returning Sat, 3 Oct.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Thu, 1 Oct, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Sat, 3 Oct, arriving in Boise.Price includes taxes and charges.From 160 €, select.
Seattle.160 € per passenger.Departing Fri, 11 Sep, returning Tue, 15 Sep.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Fri, 11 Sep, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Tue, 15 Sep, arriving in Boise.Price includes taxes and charges.From 160 €, select.
Seattle.173 € per passenger.Departing Sun, 23 Aug, returning Sun, 13 Sep.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Sun, 23 Aug, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Sun, 13 Sep, arriving in Boise.Price includes taxes and charges.From 173 €, select.
Seattle.181 € per passenger.Departing Wed, 28 Oct, returning Mon, 2 Nov.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Wed, 28 Oct, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Mon, 2 Nov, arriving in Boise.Price includes taxes and charges.From 181 €, select.
Seattle.182 € per passenger.Departing Wed, 11 Nov, returning Mon, 16 Nov.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Wed, 11 Nov, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Mon, 16 Nov, arriving in Boise.Price includes taxes and charges.From 182 €, select.
Seattle.198 € per passenger.Departing Thu, 30 Jul, returning Wed, 5 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Boise on Thu, 30 Jul, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Wed, 5 Aug, arriving in Boise.Price includes taxes and charges.From 198 €, select.
Seattle.201 € per passenger.Departing Tue, 28 Jul, returning Wed, 29 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Boise on Tue, 28 Jul, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Wed, 29 Jul, arriving in Boise.Price includes taxes and charges.From 201 €, select.
Seattle.259 € per passenger.Departing Mon, 27 Jul, returning Sat, 1 Aug.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Mon, 27 Jul, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Sat, 1 Aug, arriving in Boise.Price includes taxes and charges.From 259 €, select.
Seattle.259 € per passenger.Departing Fri, 24 Jul, returning Mon, 27 Jul.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Fri, 24 Jul, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Mon, 27 Jul, arriving in Boise.Price includes taxes and charges.From 259 €, select.
Seattle.259 € per passenger.Departing Thu, 10 Dec, returning Thu, 17 Dec.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Thu, 10 Dec, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Thu, 17 Dec, arriving in Boise.Price includes taxes and charges.From 259 €, select.
Seattle.260 € per passenger.Departing Fri, 29 Jan, returning Mon, 1 Feb.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Fri, 29 Jan, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Mon, 1 Feb, arriving in Boise.Price includes taxes and charges.From 260 €, select.
Seattle.261 € per passenger.Departing Tue, 24 Nov, returning Tue, 1 Dec.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Tue, 24 Nov, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Tue, 1 Dec, arriving in Boise.Price includes taxes and charges.From 261 €, select.
Seattle.312 € per passenger.Departing Sun, 14 Mar, returning Thu, 18 Mar.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Sun, 14 Mar, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Thu, 18 Mar, arriving in Boise.Price includes taxes and charges.From 312 €, select.

Find the cheapest month to fly from Boise to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Boise to Seattle flights are currently cheapest in August.
Jul
from 201 €
Aug
from 159 €
Sep
from 160 €
Oct
from 160 €
Nov
from 182 €
Dec
from 259 €
Jan
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Feb
Find prices
Mar
from 312 €
Apr
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May
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Jun
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Direct flights from Boise to Seattle

Alternative Boise to Seattle routes

Looking for the cheapest, fastest or easiest route from Boise to Seattle? You could fly into the following airports instead.

Seattle Lake Union SPB

2km from central Seattle
Closest
Search flights

Seattle Boeing Fld

11km from central Seattle
from 1.064 €
Search flights

Seattle / Tacoma International

20km from central Seattle
Cheapest
from 159 €
Search flights

Paine Field

33km from central Seattle
from 548 €
Search flights

Boise to Seattle: Flight information

The things to know before you go.
Cheapest flight found159 €
Cheapest month to flyAugust
Average flight time1 hr, 43 mins
Most popular airlineAlaska Airlines
Average flights per week940

Finding cheap flights from Boise to Seattle: Frequently asked questions

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.
The best price we found for a return flight from Boise to Seattle is 159 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
1 hour and 43 minutes is the average flight time from Boise to Seattle.
Alaska Airlines, Qatar Airways and SkyWest Airlines fly direct from Boise to Seattle.
As of July 2026, there are 470 flights per week flying from Boise to Seattle.
The cheapest month to fly from Boise to Seattle is usually August.
If you're flying from Boise Airport, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the centre of Seattle. We've found flights into this airport from 159 €.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Boise Airport to Seattle on Saturday, 29 August 2026.
Yes – the average flight time is 1 hour and 43 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.

In July, the average temperature is usually around 17°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.
Currently, Delta offers the cheapest flight tickets to Seattle.

Travelling from Boise Air Terminal (BOI) to Seattle: what you need to know

  • Book a direct flight from Boise Air Terminal to Seattle and you'll be in the air for an average of 1 hour 30 minutes.

  • Seattle is one hour behind Boise, where Boise Air Terminal is located. Seattle observes the UTC-8 timezone.

  • Boise Air Terminal (BOI) to Seattle-Tacoma International Airport (SEA) is the most traveled route, with 100 departures a week to pick from. If you have things to finalize before heading off, the last flight from BOI to SEA is with Alaska Airlines at 21:03. Opt for the first departure with Alaska Airlines at 05:30 if you want to fly out earlier.

  • Give yourself plenty of time to make your BOI to Seattle flight. As a general rule, arrive at least two hours before international departures and an hour ahead for domestic flights.

  • You'll likely experience longer lines in popular months like July. Arriving up to four hours in advance for international flights and two hours for a domestic departure will give you plenty of time for security and boarding.

  • Direct Boise Air Terminal to Seattle tickets are available for booking. Seattle-Tacoma International Airport (SEA) is where you'll step off the plane.

  • Alaska Airlines is a leading airline that offers direct flights from Boise Air Terminal to Seattle.

  • BOI is around 6 kilometres from central Boise. If you're ride-sharing, catching a taxi or driving from the centre, it'll take you 15 minutes or so to get there, depending on traffic. If you're planning to take public transport, expect the travel time to be around 30 minutes.

  • Looking for a hotel near BOI? If you're boarding an early flight from Boise Air Terminal to Seattle, these stays set you up for a seamless send-off:

  • 84% of flights leaving Boise Air Terminal land at their destination as planned. Given its strong on-time performance, you're unlikely to be delayed when jetting out of BOI.

  • You'll find BOI at 3201 Airport Way.

How to find the cheapest flights from Boise Air Terminal (BOI) to Seattle

  • 82 € is the lowest price we've found for a one-way Boise Air Terminal to Seattle flight. A round-trip plane ticket right now is 159 €. Depending on the availability when you book, these fares can change.

  • Don't wait until the last minute. You're more likely to land cheap flights from BOI to Seattle if you book ahead. Airlines often offer some amazing early bird deals.

  • The 'Whole month' tool will show you the cheapest tickets from Boise Air Terminal to Seattle across each month. It's an easy way to snap up a bargain if your travel plans aren't set in stone.

  • Locking in a cheap flight from BOI to Seattle couldn't be easier with Price Alerts. All you need to do is set up one of these automatic notifications and we'll get in touch when there's a better deal.

  • Choose your preferred departure and arrival times, number of stops and airlines with our filters. Then, sort the results for your flight from Boise Air Terminal to Seattle by 'Cheapest,' 'Best' or 'Fastest.'

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) is around 23 kilometres from the centre of Seattle. If you're catching a taxi or a ride-share, the drive takes about 25 minutes.

  • Getting to the centre by public transport takes around 35 minutes.

  • The last thing you want is a long journey to your hotel if you're landing late on a flight from Boise Air Terminal to Seattle. Book one of these accommodation options near SEA instead:

  • Reserving your ride from Seattle-Tacoma International Airport around one week in advance of your flight from BOI to Seattle can help you get the lowest rate.

Seattle Paine Field International Airport (PAE)

  • Seattle Paine Field International Airport (PAE) is around 40 kilometres from the centre of Seattle. Once you've disembarked your flight from Boise Air Terminal to Seattle, it'll take you around 40 minutes to reach the heart of the city in a taxi or ride-share.

  • Public transport will get you there in about 1 hour 30 minutes.

  • There are some great places ready to welcome you near PAE. Settle in and get cosy after your BOI to Seattle flight at one of these well-located options:

  • Get the vehicle you actually want, not just what's available, by securing your ride from PAE before your arrival. You'll also avoid paying more than you need to, especially when the airport is busy.

King County International Airport (BFI)

  • King County International Airport (BFI) is around 11 kilometres from central Seattle. It takes about 20 minutes to get to the city centre by taxi or ride-share once you've stepped off your flight from Boise Air Terminal to Seattle.

  • Public transport can take you there in about 35 minutes.

  • Stay at a hotel close to BFI and go from landing to lounging in your room in a flash. Whether you have a late BOI to Seattle flight or just want a stress-free arrival, these stays will have you settling in quickly:

  • Rental agencies sometimes offer discounts on early bookings, so secure your vehicle from BFI well ahead of your flight from Boise Air Terminal to Seattle. Plan ahead and your wallet will thank you.

Best time to go to Seattle

  • July is the busiest month for flights from Boise Air Terminal to Seattle. To steer clear of the crowds, head to Seattle in December.

  • Lock in a Boise Air Terminal to Seattle plane ticket with a departure in August if you're eager to explore the city during its warmest month. Expect temperatures to range from 12ºC (54ºF) to 28ºC (82ºF).

  • Search for cheap tickets from BOI to Seattle in February if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between -1ºC (30ºF) and 11ºC (52ºF) on average.

More about Seattle

  • Once you've booked your flight from Boise Air Terminal to Seattle, choose a hotel that puts you right where the action is. Make one of these options your base for exploring Seattle:

  • Pike Place Market and Space Needle are just two of the major attractions to put on your Seattle to-do list. Continue your sightseeing adventures at Seattle Skyline.

Explore more of the United States

  • Seattle has plenty going for it, but there are so many other parts of the United States waiting to be discovered. About 241 kilometres south of Seattle, a trip to Portland will keep you busy. Start with leading attractions like Portland Japanese Garden, Peninsula Park Rose Garden and Beyond Van Gogh Portland.

  • Spokane is another standout destination in the United States and is around 370 kilometres east of Seattle. No journey is complete without experiencing Riverside State Park, Spokane Falls (Upper Falls) and Cathedral of Our Lady of Lourdes.

Plan the rest of your trip from Boise to Seattle

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.