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100 € Cheap Flights from Boise to Seattle / Tacoma International

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      Compare Boise to Seattle / Tacoma International flight deals

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

      Book the best Seattle / Tacoma International fare with no extra fees

      Flight deals from Boise to Seattle / Tacoma International

      Looking for a cheap last-minute deal or the best return flight from Boise Airport to Seattle / Tacoma International Airport? If you want to travel next month, return fares start from 100 €. Find the lowest prices on one-way and return tickets right here.
      Seattle.100 € 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 100 €, select.
      Seattle.100 € per passenger.Departing Fri, 8 Jan, returning Mon, 11 Jan.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Fri, 8 Jan, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Mon, 11 Jan, arriving in Boise.Price includes taxes and charges.From 100 €, select.
      Seattle.100 € per passenger.Departing Fri, 27 Nov, returning Tue, 1 Dec.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Fri, 27 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 100 €, select.
      Seattle.100 € per passenger.Departing Fri, 11 Dec, returning Fri, 25 Dec.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Fri, 11 Dec, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Fri, 25 Dec, arriving in Boise.Price includes taxes and charges.From 100 €, select.
      Seattle.100 € per passenger.Departing Sat, 30 Jan, returning Sat, 6 Feb.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Sat, 30 Jan, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Sat, 6 Feb, arriving in Boise.Price includes taxes and charges.From 100 €, select.
      Seattle.100 € per passenger.Departing Fri, 9 Oct, returning Fri, 23 Oct.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Fri, 9 Oct, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Fri, 23 Oct, arriving in Boise.Price includes taxes and charges.From 100 €, select.
      Seattle.101 € per passenger.Departing Mon, 8 Feb, returning Fri, 19 Feb.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Mon, 8 Feb, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Fri, 19 Feb, arriving in Boise.Price includes taxes and charges.From 101 €, select.
      Seattle.101 € per passenger.Departing Wed, 30 Dec, returning Tue, 5 Jan.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Wed, 30 Dec, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Tue, 5 Jan, arriving in Boise.Price includes taxes and charges.From 101 €, select.
      Seattle.152 € per passenger.Departing Mon, 16 Nov, returning Wed, 18 Nov.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Mon, 16 Nov, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Wed, 18 Nov, arriving in Boise.Price includes taxes and charges.From 152 €, select.
      Seattle.183 € per passenger.Departing Mon, 28 Sep, returning Mon, 5 Oct.Return flight with Frontier Airlines and Alaska Airlines.Outbound indirect flight with Frontier Airlines, departs from Boise on Mon, 28 Sep, arriving in Seattle / Tacoma International.Inbound indirect flight with Alaska Airlines, departs from Seattle / Tacoma International on Mon, 5 Oct, arriving in Boise.Price includes taxes and charges.From 183 €, select.
      Seattle.208 € per passenger.Departing Mon, 8 Mar, returning Fri, 19 Mar.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Mon, 8 Mar, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Fri, 19 Mar, arriving in Boise.Price includes taxes and charges.From 208 €, select.
      Seattle.208 € per passenger.Departing Mon, 28 Sep, returning Mon, 5 Oct.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Mon, 28 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 208 €, select.
      Seattle.250 € per passenger.Departing Sun, 27 Sep, returning Wed, 30 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Boise on Sun, 27 Sep, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Wed, 30 Sep, arriving in Boise.Price includes taxes and charges.From 250 €, select.
      Seattle.264 € per passenger.Departing Tue, 24 Nov, returning Tue, 5 Jan.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, 5 Jan, arriving in Boise.Price includes taxes and charges.From 264 €, select.
      Seattle.298 € per passenger.Departing Fri, 9 Apr, returning Fri, 23 Apr.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Fri, 9 Apr, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Fri, 23 Apr, arriving in Boise.Price includes taxes and charges.From 298 €, select.
      Seattle.298 € per passenger.Departing Fri, 11 Jun, returning Fri, 25 Jun.Return flight with Delta.Outbound direct flight with Delta departs from Boise on Fri, 11 Jun, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Fri, 25 Jun, arriving in Boise.Price includes taxes and charges.From 298 €, select.
      How did we find these deals? The deals you see here are the lowest prices for flight tickets from Boise to Seattle / Tacoma International found in the last 4 days, and are subject to change and availability.

      Find the cheapest month to fly from Boise to Seattle / Tacoma International

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Boise to Seattle / Tacoma International flights are currently cheapest in October.
      Sep
      from 250 €
      Oct
      from 100 €
      Nov
      from 152 €
      Dec
      from 100 €
      Jan
      from 100 €
      Feb
      from 101 €
      Mar
      from 208 €
      Apr
      from 298 €
      May
      from 298 €
      Jun
      from 298 €
      Jul
      Find prices
      Aug
      Find prices

      Direct flights from Boise to Seattle / Tacoma International

      Aeromexico
      Air France
      Alaska Airlines
      British Airways
      Condor
      Delta
      Finnair
      Horizon Air
      Icelandair
      Japan Airlines
      KLM
      Korean Air
      Qatar Airways
      Scandinavian Airlines
      SkyWest Airlines
      STARLUX Airlines
      Virgin Atlantic
      WestJet

      Boise to Seattle / Tacoma International: Alternative routes

      Compare routes from Boise to Seattle below. You may find an airport to fly into that's cheaper, faster, or easier than Seattle / Tacoma International.

      Seattle Lake Union SPB

      2km from central Seattle
      Closest
      from 896 €
      Search flights

      Seattle Boeing Fld

      11km from central Seattle
      Search flights

      Seattle / Tacoma International

      20km from central Seattle
      Cheapest
      from 100 €
      Search flights

      Paine Field

      33km from central Seattle
      from 929 €
      Search flights

      Boise to Seattle: Flight information

      The things to know before you go.
      Cheapest flight found100 €
      Cheapest month to flyJanuary
      Average flight time1 hr, 46 mins
      Most popular airlineAlaska Airlines
      Average flights per week443

      Finding cheap flights from Boise to Seattle / Tacoma International: Frequently asked questions

      The best price we found for a return flight from Boise to Seattle / Tacoma International is 100 €. 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 46 minutes is the average flight time from Boise to Seattle / Tacoma International.
      Alaska Airlines, Qatar Airways and SkyWest Airlines fly direct from Boise to Seattle / Tacoma International.
      As of September 2026, there are 443 flights per week flying from Boise to Seattle / Tacoma International.
      The cheapest month to fly from Boise to Seattle / Tacoma International is usually January.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Boise Airport to Seattle / Tacoma International Airport on Friday, 8 January 2027.
      Yes – the average flight time is 1 hour and 46 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 / Tacoma International 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.

      Currently, Delta offers the cheapest flight tickets to Seattle / Tacoma International.

      Flying from Boise Airport (BOI) to Seattle / Tacoma International Airport (SEA): what you need to know

      • Around 1 hour 45 minutes is how long you can expect to be in the air on a direct flight from Boise Airport to Seattle / Tacoma International Airport.

      • The timezone in Seattle is UTC-8, which is one hour behind Boise.

      • Each week, there are 96 Boise Airport to Seattle / Tacoma International Airport flights. If you prefer to get going early, jump on the 05:30 Alaska Airlines flight. If you're eager to make the most of your time before flying, the latest flight is at 21:03 with Alaska Airlines.

      • Your BOI to SEA flight won't wait if you're running late, so show up at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead for international travel.

      • During popular months such as October, you'll want to get to the airport earlier. Arrive two hours before a domestic departure and four hours ahead of an international flight when you travel during peak periods in general.

      • Jetting into Seattle (and then discovering more of the United States!) is a breeze with Alaska Airlines. This popular airline offers direct flights from Boise Airport to Seattle / Tacoma International Airport.

      • The majority of passengers choose to fly with Alaska Airlines on this route.

      • Delta is the most punctual carrier offering BOI to SEA flights. An impressive 88.66% of its departures on this route arrive without delay.

      • Think about adding a stopover when booking your ticket from Boise Airport to Seattle / Tacoma International Airport. Simply deselect 'Direct flights only' to break up your trip, or even explore someplace new along the way. Here are some options between BOI and SEA:

        • Harry Reid International Airport

        • Salt Lake City Airport

        • Sacramento International Airport

      How to find the cheapest flights from Boise Airport (BOI) to Seattle / Tacoma International Airport (SEA)

      • Currently, 65 € is the lowest price we've found for a one-way Boise Airport to Seattle / Tacoma International Airport flight. The best price for a return ticket is 100 €. Bear in mind that fares could change due to demand at the time of booking.

      • Don't wait until the last moment. You're more likely to find cheap tickets from BOI to SEA if you book ahead. Airlines often offer some great early bird deals.

      • Organise your trip for May. That's the cheapest month for flights from Boise Airport to Seattle / Tacoma International Airport. If you're flexible with your dates, use the 'Whole month' tool to see the lowest price across every month.

      • You won't have to check every day to find out if fares have dropped when you create a Price Alert. We'll notify you the moment there's a change in price on cheap flights from BOI to SEA.

      • Secure the ideal flight for you by using the filters. To see the 'Fastest,' 'Best' or 'Cheapest' flights from Boise Airport to Seattle / Tacoma International Airport, use the 'Sort by' function. You can also filter results by arrival and departure times, airline, and journey duration.

      Handy information about Boise Airport (BOI)

      • BOI's address is 3201 Airport Way.

      • Boise Airport earns top marks for its on-time performance. 84% of flights that take off from BOI reach their destination without delay.

      • Central Boise to Boise Airport is approximately 6 kilometres. Depending on traffic, it'll take about 15 minutes to get there if you're driving, ride-sharing or catching a taxi.

      • The trip when using public transport usually takes 30 minutes.

      • Catching an early flight from Boise Airport to Seattle / Tacoma International Airport? Avoid rushing to the airport (and sneak in some extra precious sleep) by picking one of these stays near BOI:

      Arriving at Seattle / Tacoma International Airport (SEA)

      Getting from Seattle / Tacoma International Airport (SEA) to central Seattle

      • Seattle / Tacoma International Airport is roughly 23 kilometres from central Seattle. The drive time takes around 25 minutes.

      • If you're travelling by public transport, expect a journey of roughly 35 minutes.

      When to fly to Seattle / Tacoma International Airport (SEA)

      • July is the busiest month for flights from Boise Airport to Seattle / Tacoma International Airport. To steer clear of the crowds, travel to Seattle in March.

      • Before locking in your flight from Boise Airport to Seattle / Tacoma International Airport, consider the kind of weather you enjoy. August is the warmest month in Seattle, with the temperature ranging from 12ºC (54ºF) to 28ºC (82ºF).

      • February has average temperatures of between -1ºC (30ºF) and 11ºC (52ºF). Search for cheap tickets from BOI to SEA around that time if you want to travel in cooler conditions.

      Explore more of the United States

      • Seattle has plenty to offer, but there are so many other corners of the United States you should also see. Around 241 kilometres south of Seattle, a trip to Portland will keep you on the move. Start with leading sights like Portland Japanese Garden, Peninsula Park Rose Garden and Beyond Van Gogh Portland.

      • If you're interested in discovering another major stop in the United States, head for Spokane, about 370 kilometres east of Seattle. Riverside State Park, Spokane Falls (Upper Falls) and Cathedral of Our Lady of Lourdes are among the biggest draws.

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