Compare fares, departure times, stops and baggage details for this route, then open the full search when you are ready to check current availability and complete booking.
BOISEASat, 03 Oct
Fare checked before payment No hidden charges Transparent cancellation policy 24×7 booking support
Lowest fareUS$213Delta Air Lines
Fastest1h 34mgate to gate
Options found74flights on this route
Find your flightBOI → SEA
Available Flights & Fares
Compare fares, timings and baggage. Pick the flight that suits your trip.
Prices in USD
74 flight options
Fares are checked again before payment.
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Alaska Airlines
AS-782
05:59
2026-10-03
Boise (BOI)Boise Air Terminal/Gowen Field
5H :40 M
1 Stop
PDX
· 3h 11m Portland (PDX), United States
10:39
2026-10-03
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
Type
Non Refundable
Fare Type
Publish
0 Pieces 2 Pieces
$311
Flight DetailsBOI to SEA - 5H :40 M
Baggage InfoCheck-in 0 Pieces - Cabin 2 Pieces
Fare RulesNon-refundable fare. Final rules are verified before booking.
Alaska Airlines
AS-2268
07:10
2026-10-03
Boise (BOI)Boise Air Terminal/Gowen Field
6H :04 M
1 Stop
PHX
· 0h 41m Phoenix (PHX), United States
12:14
2026-10-03
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
Type
Non Refundable
Fare Type
Publish
0 Pieces 2 Pieces
$311
Flight DetailsBOI to SEA - 6H :04 M
Baggage InfoCheck-in 0 Pieces - Cabin 2 Pieces
Fare RulesNon-refundable fare. Final rules are verified before booking.
Alaska Airlines
AS-3418
07:20
2026-10-03
Boise (BOI)Boise Air Terminal/Gowen Field
6H :32 M
1 Stop
SJC
· 2h 20m San Jose (SJC), United States
12:52
2026-10-03
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
Type
Non Refundable
Fare Type
Publish
0 Pieces 2 Pieces
$311
Flight DetailsBOI to SEA - 6H :32 M
Baggage InfoCheck-in 0 Pieces - Cabin 2 Pieces
Fare RulesNon-refundable fare. Final rules are verified before booking.
Alaska Airlines
AS-3405
07:30
2026-10-03
Boise (BOI)Boise Air Terminal/Gowen Field
3H :10 M
1 Stop
GEG
· 0h 40m Spokane (GEG), United States
09:40
2026-10-03
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
Type
Non Refundable
Fare Type
Publish
0 Pieces 2 Pieces
$311
Flight DetailsBOI to SEA - 3H :10 M
Baggage InfoCheck-in 0 Pieces - Cabin 2 Pieces
Fare RulesNon-refundable fare. Final rules are verified before booking.
No flights match the selected filters. Clear filters or open full search.
Today's Airfare Highlights
Selected flight highlights for 03 Oct 2026.
Lowest fare$213Delta Air Lines06:45
Earliest departure$248United Airlines05:00
Shortest duration$275Alaska Airlines12:58
Night
00:00-05:59
$248United Airlines at 05:00Morning
06:00-11:59
$213Delta Air Lines at 06:45Afternoon
12:00-17:59
$213Delta Air Lines at 12:17Evening
18:00-23:59
$248United Airlines at 18:50
Departure & Arrival Airport Details
Boise (BOI)
Boise Air Terminal/Gowen Field
United States
GMT -7
Latitude: 43.5644
Longitude: -116.223
Seattle (SEA)
Seattle/tacoma International
United States
GMT -8
Latitude: 47.449001
Longitude: -122.308998
Distance: Boise (BOI), United States to Seattle (SEA), United States - 641.13 km
Flights shown for 03 Oct 2026. View all flights opens the complete search result.
Fares and hotel rates usually run higher around these dates. Booking earlier — or shifting a day or two — often costs less.
Busiest periods: Summer travel (15 Jun – 31 Aug), Holiday season (18 Dec – 02 Jan).
12OctColumbus DayMonday · in 30 daysPeak
12OctColumbus DayMonday · in 30 daysPeak
12OctIndigenous Peoples' DayMonday · in 30 daysPeak
11NovVeterans DayWednesday · in 60 days
26NovThanksgiving DayThursday · in 75 days
25DecChristmas DayFriday · in 104 days
Fixed-date national holidays. Festivals that follow the lunar calendar shift each year and are not listed here — check the exact date for your travel year.
Compare your journey
How to travel Boise to Seattle
Every option we can actually book for you, compared on price and journey time.
Connecting flight₹23,698Longer — includes a stop60 options
Air distance is about 641 km. FlyX does not currently sell a bus on this pair. 4 airlines operate this route.
Road distance and coach duration are approximate estimates from the air distance, not a timetable.
Airlines flying from Boise to Seattle
Compare fares, stops, baggage and refundability across the airlines flying this route.
AL
Alaska Airlines Flights
from $27549 flights
Fares from
$275
Non-stop
8 in these results
Departures
49 — compare timings in the list above
DE
Delta Air Lines Flights
from $21310 flights
Fares from
$213
Non-stop
6 in these results
Departures
10 — compare timings in the list above
UN
United Airlines Flights
from $2489 flights
Fares from
$248
Non-stop
None in these results
Departures
9 — compare timings in the list above
AM
American Airlines Flights
from $4176 flights
Fares from
$417
Non-stop
None in these results
Departures
6 — compare timings in the list above
Route Overview & Flight Facts
Fastest flight duration
1h 34m · Alaska Airlines
First departure of the day
05:00 · United Airlines
Last departure of the day
20:23 · Alaska Airlines
Options in this snapshot
74
Direct / non-stop options
14
Airport codes
Boise–BOI, Seattle–SEA
Fares and timings are indicative — the exact price is confirmed with the airline when you search.
Flight Schedule, Timings & Airfare Insights
Daily Flight Schedule & Travel Duration
Around 74 flights appear in the dated route snapshot, including 14 non-stop options. Departures run through the day — the first flight leaves around 05:00 and the last around 20:23. The fastest flight takes about 1h 34m.
Morning vs Evening Departure Fares
Lowest fare by departure window: Morning from $213, Afternoon from $213, Night from $248, Evening from $248. These observations do not predict the cheapest departure window on other dates.
Cheapest Airfare & Best Time to Book
Search your travel dates to compare current fares — prices update continuously with airline inventory.
One-Way vs Round-Trip Fare Comparison
Compare the complete cost and conditions of both options for your dates. A round-trip can have different fare and change rules from two one-way tickets. One booking may contain multiple airline PNRs; confirm baggage transfer and connection protection for separate tickets.
Online Web Check-In & Boarding Pass
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How to Book Cheap Flights on FlyX
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2
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3
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4
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5
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Why Book Your Flight with FlyX?
Compare the available Boise to Seattle options by total price, stops, baggage and fare conditions. Search your dates for current availability, then review traveller details and the final price before paying.
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Frequently Asked Questions
Is it worth booking Boise to Seattle flights in advance?
There is no guaranteed cheapest booking window. Compare your planned dates early, check nearby dates and consider baggage, connection time and change conditions as well as price. Across the dates currently loaded for Boise to Seattle, Saturday shows the lowest fare at $213. That is an observed snapshot for these dates, not a rule that holds every week.
How far is Boise from Seattle by air?
The direct air distance between Boise (BOI) and Seattle (SEA) is about 641 km. Actual flight time varies with the routing the airline files and with winds on the day.
Are there non-stop flights from BOI to SEA?
Yes. 14 non-stop flights are showing on Boise to Seattle for the dates currently loaded. Use the Stops filter to see only those.
Which airlines fly Boise to Seattle?
Alaska Airlines, Delta Air Lines, United Airlines and American Airlines are showing on this route for the dates currently loaded. Fares, baggage allowance and refund rules differ by airline and by fare type, so compare the fare conditions and not only the headline price.
How long is the flight from Boise to Seattle?
The quickest non-stop Boise to Seattle flight currently loaded takes about 1h 34m. Across the non-stop options showing, block time ranges from 1h 34m to 1h 55m. Journeys with a stop take longer, since the total includes the layover.
What is the cheapest Boise to Seattle flight fare?
The lowest fare showing on Boise to Seattle for the dates currently loaded is $213. Fares on the same dates run up to $971, depending on airline, timing and fare type. Airline pricing moves continuously, so treat this as a dated observation rather than a fixed price.
What time do Boise to Seattle flights depart?
For the dates currently loaded the first departure is around 05:00 and the last is around 20:23, local time at Boise. Use the departure-time filter on the results above to narrow to a morning, afternoon or evening slot.
Why does the price change after clicking Book Now?
Airline seat inventory and fares change continuously. Selecting Book Now runs a live fare verification with the airline so the price you approve is the price you pay - if it has moved, you see the new figure before any payment.
Before you book this route
Check the airport codes BOI–SEA, local departure and arrival dates, and every connecting airport. Connections can have different document and baggage requirements from your final destination.
Where these fares come from
The fares, durations, stops and baggage shown here come from real airline search results for this route. They are examples for the dates on this page, not a full timetable and not a locked price — run a search to see what is available for your own dates.
Last checked .
Check official travel requirements
Confirm passport, visa and transit rules for your nationality and full itinerary with the relevant government and operating airline. IATA travel-document information explains why requirements vary.
Planning more than the flight? Our United States guide covers the visa process for Indian passport holders, best time to go, how long to plan for, and which places are worth the days you have. Long-haul city breaks and national parks.
The BOI to SEA cards above show selected flight options. Airline prices and seat availability can move quickly, so the final fare is rechecked in the booking flow.
Approx route distance: 641.13 km.
Before you book
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Lowest Boise to Seattle airfare today, in 30 days and in 90 days
Cheapest Fare
Fare
Date
Airline
Departure
Lowest Airfare Today
$213
03/10/2026
Delta Air Lines
06:45
Cheapest Airfare Within 30 Days
$209
12/10/2026
Delta Air Lines
06:45
Cheapest Airfare Within 90 Days
$203
11/12/2026
Delta Air Lines
06:45
Book Boise to Seattle Flight Tickets on FlyX
Planning to fly from Boise to Seattle? FlyX lets you compare flight rates, airline timings, layovers, and baggage allowances all in one simple list. From quick non-stop routes to flexible connecting options, finding and booking cheap air tickets has never been easier.
Boise to Seattle Flight Distance, Duration and Time
The aerial distance between Boise and Seattle is approximately 641 KM. The flight duration ranges from 1H :34 M up to 27H :58 M depending on whether you book a non-stop flight or a connecting schedule with layovers.
Boise to Seattle Flight Schedule and Timing
Around 74 flights operate on this route, providing plenty of choices for your travel window. The earliest morning flight departs from Boise at 05:00, while the last night flight leaves at 20:23. Flights depart from Boise Air Terminal/Gowen Field and land at Seattle/tacoma International.
Flight Route Details & Analysis
Flight Details
Information
Route
Boise to Seattle
Aerial Distance
641 KM
Flight Duration
1H :34 M - 27H :58 M
Airport Codes
Boise - BOI, Seattle - SEA
Total Flights Available
74 flights (14 direct)
First Flight Departure
Departs at 05:00
Last Flight Departure
Departs at 20:23
Early Morning Flights (12 AM - 8 AM)
26 direct/indirect flights
Morning Flights (8 AM - 12 PM)
24 direct/indirect flights
Afternoon Flights (12 PM - 4 PM)
16 direct/indirect flights
Evening Flights (4 PM - 8 PM)
6 direct/indirect flights
Night Flights (8 PM - 12 AM)
2 direct/indirect flights
Airport Information & Terminals
BOI: Boise airport. Boise airport transfer should be matched to the exact hotel, suburb or meeting area. Rail can work well for light luggage, but late arrivals, winter weather and family baggage often make a direct cab or booked transfer easier.
SEA: Seattle-Tacoma International Airport. Sea-Tac connects to downtown by light rail, while cabs are useful for Bellevue, Redmond or late-night arrivals. Rain and freeway traffic should be part of the plan.
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Seattle/tacoma International
