Cheap Flights from Boise, ID to Seattle, WA from $71

Return flight: Seattle – Boise

On Cheapflightsplus.com you will find 11 direct and 29 connecting flights from Boise to Seattle. You can compare airfare deals from 6 airlines and multiple travel sites from $71, book and save on cheap plane tickets and last minute offers. Also check out BOI-SEA flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Boise to Seattle Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $71 (one-way), $122 (round-trip).
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Full flight schedule will help you in detecting at what time planes fly from Boise to Seattle. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
Departure Arrival Flight Details Flight Duration Price
06:25 — 07:05
06:25 — 07:05 HA4795 Hawaiian Airlines
Boise — Seattle
1h 40m
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from$82
06:25 — 07:05
06:25 — 07:05 AS737 Alaska Airlines
Boise — Seattle
1h 40m
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from$108
08:47 — 09:20
08:47 — 09:20 AS2206 Alaska Airlines
Boise — Seattle
1h 33m
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from$107
09:53 — 10:26
09:53 — 10:26 HA4797 Hawaiian Airlines
Boise — Seattle
1h 33m
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from$103
09:53 — 10:26
09:53 — 10:26 AS2209 Alaska Airlines
Boise — Seattle
1h 33m
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from$108
13:00 — 13:38
13:00 — 13:38 AS3448 Alaska Airlines
Boise — Seattle
1h 38m
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from$108
15:10 — 15:43
15:10 — 15:43 HA4805 Hawaiian Airlines
Boise — Seattle
1h 33m
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from$103
15:10 — 15:43
15:10 — 15:43 AS2108 Alaska Airlines
Boise — Seattle
1h 33m
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from$107
16:50 — 17:26
16:50 — 17:26 AS3002 Alaska Airlines
Boise — Seattle
1h 36m
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from$108
19:12 — 19:50
19:12 — 19:50 HA4809 Hawaiian Airlines
Boise — Seattle
1h 38m
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from$71
19:12 — 19:50
19:12 — 19:50 AS3000 Alaska Airlines
Boise — Seattle
1h 38m
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from$77
07:12 — 11:00
07:12 — 07:20 HA4787 Hawaiian Airlines
Boise — Spokane
2h 25m stop
09:45 — 11:00 HA4954 Hawaiian Airlines
Spokane — Seattle
4h 48m
including layover
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from$120
07:12 — 09:10
07:12 — 07:20 HA4787 Hawaiian Airlines
Boise — Spokane
40m stop
08:00 — 09:10 HA4955 Hawaiian Airlines
Spokane — Seattle
2h 58m
including layover
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from$153
12:36 — 00:34
+1 day
12:36 — 14:35 F93934 Frontier Airlines
Boise — Denver
7h 53m stop
22:29 — 00:37 F93405 Frontier Airlines
Denver — Seattle
12h 58m
including layover
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from$115
13:29 — 15:24
13:29 — 13:50 HA4791 Hawaiian Airlines
Boise — Portland
40m stop
14:30 — 15:24 HA6403 Hawaiian Airlines
Portland — Seattle
2h 55m
including layover
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from$153
14:44 — 18:02
14:44 — 14:55 AS3198 Alaska Airlines
Boise — Spokane
1h 51m stop
16:46 — 18:02 AS3294 Alaska Airlines
Spokane — Seattle
4h 18m
including layover
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from$163
14:44 — 18:02
14:44 — 14:55 HA4781 Hawaiian Airlines
Boise — Spokane
1h 51m stop
16:46 — 18:02 HA4957 Hawaiian Airlines
Spokane — Seattle
4h 18m
including layover
Find flight
from$219
16:00 — 18:30
13:26 — 13:45 HA4794 Hawaiian Airlines
Boise — Portland
1h 14m stop
17:30 — 18:32 HA6402 Hawaiian Airlines
Portland — Seattle
3h 30m
including layover
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from$153
12:36 — 15:52
+1 day
12:36 — 14:36 F93934 Frontier Airlines
Boise — Denver
20h 58m stop
11:34 — 13:09 F94721 Frontier Airlines
Denver — Salt Lake City
1h 15m stop
14:24 — 15:52 F94987 Frontier Airlines
Salt Lake City — Seattle
28h 16m
including layover
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from$254
18:25 — 16:25
+1 day
18:25 — 19:38 G43223 Allegiant Air
Boise — Santa Ana
11h 7m stop
06:45 — 08:00 NK714 Spirit Airlines
Santa Ana — Las Vegas
5h 40m stop
13:40 — 16:25 NK1681 Spirit Airlines
Las Vegas — Seattle
23h
including layover
Find flight
from$377
*Departure and arrival times - local. Updated on August 6, 2025

Flight Information

Below we will explain in detail what the flights cost on the destination from Boise to Seattle depends on and how to choose the most interesting flight option for you.

Distance between Boise and Seattle is 640 miles. Time difference between the cities is 1h. Airplanes depart 06:00 to 19:38 from 1 Boise airport and arrive 06:00 to 19:38 to 3 Seattle airports. Average flight time is 1h 36m.

  • The fastest flight 1h 33m
  • Average flight time 1h 36m
  • The earliest flight 06:00
  • The latest flight 19:38
  • Distance 398 ml

The cheapest months to travel to Seattle are august (from 71 $), september (from 82 $), june (from 99 $).

The most expensive months are may (from 111 $), july (from 103 $), october (from 103 $).

What is the lowest airfare Boise to Seattle?

The cheapest plane ticket found by our users is $71. This airfare is for economy class on one-way HA4809 flight by Hawaiian Airlines for August 27, 2025 which leaves Boise in Boise at 19:12 am and arrives at Seattle Seattle-Tacoma Intl at 19:50.

Economy class
$71
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Business class
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First class
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Popular Airlines on the Route

The flight Boise — Seattle is served by 6 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 14 departures per week at the price of from $ 77 . And the most expensive tickets are offered by Frontier Airlines airline - from $ 470.

Direct flights

There are 11 nonstop flights on the route. The fastest direct flight is HA4797 by Hawaiian Airlines takes 1h 33m and the cheapest is HA4809 by Hawaiian Airlines for $71.

  • AS - Alaska Airlines
    from $77
    Find
  • HA - Hawaiian Airlines
    from $71
    Find
See more direct flights

Connecting Flights

There are 29 flights with layovers on the route. The fastest connecting flight is HA4791 by Hawaiian Airlines takes 2h 55m and the cheapest is HA4809 by Hawaiian Airlines for $115.

  • AS - Alaska Airlines
    from $162
    Find
  • F9 - Frontier Airlines
    from $115
    Find
  • SY - Sun Country Airlines
    from $209
    Find
  • HA - Hawaiian Airlines
    from $120
    Find
  • UA - United Airlines
    from $152
    Find
  • G4 - Allegiant Air
    from $377
    Find
See more connecting flights

Airports

You can fly from Boise to Seattle from 1 airports (Boise).

Boise airports

  • Boise-BOI
    from $71
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Seattle airports

  • Boeing Field International Airport-BFI
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  • Seattle-Tacoma Intl-SEA
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  • Kenmore Air Harbor SPB-LKE
    Find

How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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