$79 Cheap Delta flights Boise (BOI) to Seattle (SEA)

View $79 flight on Sat, Oct 11, 2025Opens in a new window

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$79 Cheap Delta flights Boise (BOI) to Seattle (SEA)

Prices were available within the past 7 days and start at $79 for one-way flights and $117 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Nov 18 - Sat, Nov 22
BOI
Boise
SEA
Seattle
$117 Roundtrip, found 1 hour ago
$117
Roundtrip
found 1 hour ago
Select Delta flight, departing Tue, Nov 18 from Boise to Seattle, returning Sat, Nov 22, priced at $117 found 1 hour ago
0
Flights from Boise (BOI) to Seattle (SEA)
Origin airport
Boise
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, United
Popular airline
Alaska Airlines
Distance
397 mi

Frequently asked questions

How much is a Delta Air Lines flight from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA)?
Scoring cheap one-way Delta Air Lines flights from BOI to SEA from $79 on Expedia couldn't be easier — just filter by "Price (lowest to highest)." Alternatively, check out our budget-friendly round-trip fares from $117 for your next exciting adventure.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from BOI to SEA with Delta Air Lines?
Delta Air Lines flights to Seattle tend to be more affordable in the quieter months of January and February. Whether you're searching for a return or one-way ticket, you could find a better deal then.
What is the cheapest time to book flights from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA) with Delta Air Lines?
Begin your search one to three months ahead of your travel date to score cheaper fares on Delta Air Lines flights from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Nail your timing, and you can enjoy significant savings on domestic trips.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Delta Air Lines fly nonstop from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA)?
Depart on one of Delta Air Lines's 48 direct weekly flights from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA). To see what's available, enter your origin, dates and destination and hit search. Then select the "Nonstop" and "Airline" filters.
How long does it take to fly from BOI to SEA with Delta Air Lines?
It takes around 1h 50m to fly nonstop from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA) with Delta Air Lines.
Which day of the week has the most Delta Air Lines flights from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA)?
If flexibility is what you're after, Thursday offers the most choice for Delta Air Lines flights from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA). You can select from 7 different departures.
What is the earliest Delta Air Lines flight from BOI to SEA?
Departing BOI at 5:45AM UTC-7, the earliest Delta Air Lines flight to SEA lands at 6:38AM UTC-8. Flying earlier in the day means you'll be less likely to encounter delays.* Prefer a later start? The last Delta Air Lines flight from BOI to SEA departs at 7:30PM UTC-7 and touches down at 8:18PM UTC-8.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Delta Air Lines fly into in Seattle?
Seattle - Tacoma Intl. Airport (SEA) is the primary Seattle gateway for Delta Air Lines flights from Boise Airport (BOI).
Why fly with Delta Air Lines from BOI to SEA?
Delta Air Lines makes traveling from BOI to SEA enjoyable with a rewarding loyalty program and an excellent in-flight experience. You also have the chance to earn points with Delta SkyMiles. Make sure you sign up to our free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
What type of plane does Delta Air Lines fly from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA)?
Hop on a Delta Air Lines flight from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA), and you'll likely be flying on an Embraer 175. Keep in mind though, that the aircraft type can change depending on operational needs.
Can I change or cancel my Delta Air Lines flight from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA)?
In most cases, you can reschedule or cancel your flight, although additional fees may apply if you made your booking more than 24 hours ago. Need to keep your options open? Use Expedia's "Changes included" or "No cancel fee" filter to find flights that won't penalize you if you have to adjust your plans. To modify your itinerary, go to "Trips," select your flight and click on "Manage Booking" for more details.

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