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Flights from Seattle to Boise

Book direct flights from Seattle to Boise: One way flights from $109, round trip flights from $152. Find flight deals for the next 3 months below.

      • Cheapest nonstop
        SEA 7:18 AM
        1h 34m
        Nonstop
        BOI 9:52 AM
        Seattle - Boise | Thu, Aug 20 | Alaska Airlines
        BOI 4:20 PM
        1h 36m
        Nonstop
        SEA 4:56 PM
        Boise - Seattle | Thu, Aug 27 | Alaska Airlines
        $152 $387
        61% off
        61% off
        $387 $152
      • SEA 9:31 PM
        1h 33m
        Nonstop
        BOI 12:04 AM
        Seattle - Boise | Tue, Aug 18 | Alaska Airlines
        BOI 1:15 PM
        1h 34m
        Nonstop
        SEA 1:49 PM
        Boise - Seattle | Tue, Aug 25 | Alaska Airlines
        $152 $387
        61% off
        61% off
        $387 $152
      • SEA 9:03 AM
        1h 40m
        Nonstop
        BOI 11:43 AM
        Seattle - Boise | Thu, Aug 20 | Delta Air Lines
        BOI 12:23 PM
        1h 49m
        Nonstop
        SEA 1:12 PM
        Boise - Seattle | Thu, Aug 27 | Delta Air Lines
        $154 $387
        60% off
        60% off
        $387 $154
      • SEA 4:10 PM
        1h 38m
        Nonstop
        BOI 6:48 PM
        Seattle - Boise | Tue, Aug 18 | Delta Air Lines
        BOI 5:59 PM
        1h 38m
        Nonstop
        SEA 6:37 PM
        Boise - Seattle | Tue, Aug 25 | Delta Air Lines
        $154
        60% off
        $387 $154
      • SEA 7:15 AM
        1h 38m
        Nonstop
        BOI 9:53 AM
        Seattle - Boise | Sun, Aug 2 | Delta Air Lines
        BOI 5:59 PM
        1h 38m
        Nonstop
        SEA 6:37 PM
        Boise - Seattle | Tue, Aug 4 | Delta Air Lines
        $196
        49% off
        $387 $196
      • SEA 10:12 AM
        1h 35m
        Nonstop
        BOI 12:47 PM
        Seattle - Boise | Sun, Aug 2 | Alaska Airlines
        BOI 8:47 PM
        1h 34m
        Nonstop
        SEA 9:21 PM
        Boise - Seattle | Tue, Aug 4 | Alaska Airlines
        $239
        38% off
        $387 $239
      • SEA 4:10 PM
        5h 15m
        1 stop
        BOI 10:25 PM
        Seattle - Boise | Thu, Aug 20 | Hahn Air
        BOI 11:30 AM
        4h 40m
        1 stop
        SEA 3:10 PM
        Boise - Seattle | Thu, Aug 27 |
        $196
        49% off
        $387 $196
      • SEA 5:30 AM
        8h 35m
        1 stop
        BOI 3:05 PM
        Seattle - Boise | Tue, Aug 18 | Hahn Air
        BOI 3:50 PM
        9h 30m
        1 stop
        SEA 12:20 AM
        Boise - Seattle | Tue, Aug 25 |
        $258
        33% off
        $387 $258
      • SEA 3:30 PM
        4h 54m
        1 stop
        BOI 9:24 PM
        Seattle - Boise | Thu, Aug 20 | United Airlines
        BOI 5:00 AM
        6h 1m
        1 stop
        SEA 10:01 AM
        Boise - Seattle | Thu, Aug 27 | United Airlines
        $278
        28% off
        $387 $278
      • SEA 1:00 PM
        17h 25m
        1 stop
        BOI 2:00 PM
        Seattle - Boise | Thu, Jul 16 | Normal Airline
        BOI 3:00 PM
        6h
        Nonstop
        SEA 4:00 PM
        Boise - Seattle | Sat, Jul 18 | Normal Airline
        Find more flights
        Find more flights
      • Cheapest nonstop
        SEA 9:03 AM
        1h 40m
        Nonstop
        BOI 11:43 AM
        Seattle - Boise | Mon, Aug 17 | Delta Air Lines
        $109 $181
        40% off
        40% off
        $181 $109
      • SEA 9:20 PM
        1h 33m
        Nonstop
        BOI 11:53 PM
        Seattle - Boise | Sat, Aug 15 | Delta Air Lines
        $110 $181
        39% off
        39% off
        $181 $110
      • SEA 6:03 PM
        1h 30m
        Nonstop
        BOI 8:33 PM
        Seattle - Boise | Thu, Aug 20 | Alaska Airlines
        $125 $181
        31% off
        31% off
        $181 $125
      • SEA 7:50 PM
        1h 40m
        Nonstop
        BOI 10:30 PM
        Seattle - Boise | Thu, Aug 20 | Delta Air Lines
        $129
        28% off
        $181 $129
      • SEA 7:15 AM
        1h 40m
        Nonstop
        BOI 9:55 AM
        Seattle - Boise | Mon, Aug 10 | Delta Air Lines
        $130
        28% off
        $181 $130
      • SEA 7:06 PM
        15h 23m
        1 stop
        BOI 11:29 AM
        Seattle - Boise | Thu, Aug 20 | Frontier Airlines
        $116
        36% off
        $181 $116
      • SEA 2:35 PM
        8h
        1 stop
        BOI 11:35 PM
        Seattle - Boise | Sat, Aug 29 | Hahn Air
        $128
        28% off
        $181 $128
      • SEA 1:00 PM
        17h 25m
        1 stop
        BOI 2:00 PM
        Seattle - Boise | Thu, Jul 16 | Normal Airline
        Find more flights
        Find more flights

Find cheap airlines flights from Seattle to Boise

You can choose from 2 airlines that fly from Seattle to Boise, including Delta Air Lines, Alaska Airlines, Delta Air Lines has lowest fares on this route.
Delta Air Lines logo Delta Air Lines
Alaska Airlines logo Alaska Airlines
Airlines are determined based on actual purchased flight tickets from Seattle to Boise according to previous 12 months data from Trip.com.

Flight Info | Seattle to Boise

The distance between Seattle and Boise is approximately 640.7 km. It takes around 1 hour 31 minutes on average to fly from Seattle to Boise. Based on Trip.com's data travel demand peaks in July. The off-season for travel is November.

Cheapest one-way flight price$109
Cheapest round-trip ticket price$152
Off-season for travelNovember
Peak season for travelJuly
Flight distance640.7 km
Average flight time1 hour 31 minutes
Popular airlineDelta Air Lines
Flight statistics for the Seattle–Boise route are based on aggregated booking data from Trip.com over the past 12 months.

Frequently Asked Questions

  • What are the cheapest flights from Seattle to Boise (SEA-BOI)?

    Based on Trip.com data, Delta Air Lines offers one-way fares as low as $109 on Cheapest nonstop routes (e.g. SEA to BOI on Mon, Aug 17), while Alaska Airlines offers Cheapest nonstop round-trips from $152 departing on Thu, Aug 20 and returning on Thu, Aug 27.
  • At the moment, you can catch a nonstop flight from Seattle to Boise with the following airlines, including: Delta Air Lines Alaska Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes around 1 hour 31 minutes to fly from Seattle (SEA) to Boise (BOI).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seattle to Boise 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 Trip.com data in the past 4 weeks, there is 89 flight per week flying from Seattle to Boise. You can check the weekly schedule for popular airlines on this route below: Delta Air Lines: S/M/T/W/T/F/S -- DL3750 (07:54) Alaska Airlines: S/M/T/W/T/F/S -- AS248 (07:14)
  • To find best deals on flights from Seattle to Boise, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Mon, Aug 17, with one-way flights priced at just $109.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Delta Air Lines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Boise travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Seattle to Boise is November, when demand for travel is lower.
  • After crunching the numbers on our July flight calendar, it's currently cheapest to fly from Seattle to Boise on July 15, 2026 with United Airlines, with prices starting at $252.
  • You can land at any one of the following hubs in Boise, with Seattle-Tacoma International Airport to Boise Airport (SEA-BOI) is by far the most common option on this route: Boise Airport (BOI).
  • The time difference between Boise and Seattle 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 booking, 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.

Explore More Popular Flights

Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
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.