Return flights from Boise to Seattle Flights from HKD 55 incl. tax

Based on HopeGoo data, Hawaiian Airlines offers one-way fares as low as US$64 on Cheapest nonstop routes (e.g. BOI to SEA on Thu, Apr 2), while Delta Air Lines offers Cheapest nonstop round-trips from US$71 departing on Thu, Mar 26 and returning on Sat, Mar 28.

At the moment, you can catch a nonstop flight from Boise to Seattle with the following airlines, including: Alaska Airlines Selected airlines are based on historical data collected from flight bookings users made on HopeGoo within the last 90 days.

It takes about 1 hour 45 minutes to fly from Boise to Seattle.

By analyzing data from all airlines on the HopeGoo flight calendar, it looks like the best time to book a flight from Boise to Seattle is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

Based on HopeGoo data in the past 4 weeks, there is 85 flight per week flying from Boise to Seattle. You can check the weekly schedule for popular airlines on this route below: Alaska Airlines: S/M/T/W/T/F/S -- AS345 (06:27)

To find best deals on flights from Boise to Seattle, you can use various tools on HopeGoo: · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Thu, Apr 2, with one-way flights priced at just US$64. · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Hawaiian Airlines. · Set up price alerts to easily monitor ticket prices without having to check every day. · Check HopeGoo flight deals and promo codes frequently. · Avoid peak season unless you book very early. It seems the peak season for Seattle travel is around July. · Get exclusive promo codes for HopeGoo app users.

The cheapest months to fly from Boise to Seattle is November, when demand for travel is lower.

After crunching the numbers on our February flight calendar, it's currently cheapest to fly from Boise to Seattle on February 26, 2026 with Hawaiian Airlines, with prices starting at US$68.

You can land at any one of the following hubs in Seattle, with Boise Airport to Seattle-Tacoma International Airport (BOI-SEA) is by far the most common option on this route: King County (Boeing Field) International Airport (BFI) Kenmore Air - Lake Union (LKE) Seattle-Tacoma International Airport (SEA).

The time difference between Seattle and Boise is 1h.

Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your HopeGoo, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.