$89 Cheap Delta flights Billings (BIL) to Seattle (SEA)

View $89 flight on Sat, Aug 30, 2025Opens in a new window

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$89 Cheap Delta flights Billings (BIL) to Seattle (SEA)

Prices were available within the past 7 days and start at $89 for one-way flights and $178 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Sep 2 - Thu, Sep 4
BIL
Billings
SEA
Seattle
$178 Roundtrip, found 4 hours ago
$178
Roundtrip
found 4 hours ago
Select Delta flight, departing Tue, Sep 2 from Billings to Seattle, returning Thu, Sep 4, priced at $178 found 4 hours ago
Delta
Tue, Sep 30 - Wed, Oct 1
BIL
Billings
SEA
Seattle
$195 Roundtrip, found 1 day ago
$195
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Sep 30 from Billings to Seattle, returning Wed, Oct 1, priced at $195 found 1 day ago
Delta
Sat, Oct 18 - Mon, Oct 20
BIL
Billings
SEA
Seattle
$199 Roundtrip, found 3 hours ago
$199
Roundtrip
found 3 hours ago
Select Delta flight, departing Sat, Oct 18 from Billings to Seattle, returning Mon, Oct 20, priced at $199 found 3 hours ago
Delta
Thu, Aug 21 - Wed, Aug 27
BIL
Billings
SEA
Seattle
$210 Roundtrip, found 14 hours ago
$210
Roundtrip
found 14 hours ago
Select Delta flight, departing Thu, Aug 21 from Billings to Seattle, returning Wed, Aug 27, priced at $210 found 14 hours ago
Flights from Billings (BIL) to Seattle (SEA)
Origin airport
Logan Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Popular airline
Alaska Airlines
Distance
661 mi
Average flight time
1 hour 10 mins

Frequently asked questions

How much is a Delta Air Lines flight from Logan Intl. Airport (BIL) to Seattle - Tacoma Intl. Airport (SEA)?
Apply the "Price (lowest to highest)" filter on Expedia to search for cheap Delta Air Lines return flights from $178 from BIL to SEA. Affordable one-way fares from $89 are also on offer.**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 BIL to SEA with Delta Air Lines?
January is one of the most affordable months to fly to Seattle with Delta Air Lines. You could also find great deals on one-way and round-trip tickets in February.
What is the cheapest time to book flights from Logan Intl. Airport (BIL) to Seattle - Tacoma Intl. Airport (SEA) with Delta Air Lines?
Search for affordable Delta Air Lines flights from Logan Intl. Airport (BIL) to Seattle - Tacoma Intl. Airport (SEA) one to three months prior to your day of departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare type and journey, the best day to book a domestic flight is generally Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**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 Logan Intl. Airport (BIL) to Seattle - Tacoma Intl. Airport (SEA)?
To see if there's a direct journey from BIL to SEA with Delta Air Lines or another carrier, use our "Nonstop" filter when browsing for tickets.
What is the earliest Delta Air Lines flight from BIL to SEA?
Search Delta Air Lines's earliest flights from BIL to SEA by checking the "Early Morning" and "Morning" filters. Not only will you get to your destination sooner, early departures are also 20% less likely to be canceled.**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?
Board a Delta Air Lines flight from Logan Intl. Airport (BIL) to Seattle, and you'll likely come in to Seattle - Tacoma Intl. Airport (SEA). This is the airline's main hub in this destination.
Why fly with Delta Air Lines from BIL to SEA?
Flying from BIL to SEA with Delta Air Lines comes with a variety of perks, including a rewarding loyalty program and an excellent in-flight experience. Plus, when you book through Expedia, One Key™ members can earn OneKeyCash™* to spend on select future travel purchases. That's in addition to the Delta SkyMiles points you can earn with Delta Air Lines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from Logan Intl. Airport (BIL) to Seattle - Tacoma Intl. Airport (SEA)?
Depending on the ticket type you purchased, a fee may apply if you modify or cancel your booking more than 24 hours after it's been confirmed. To secure flexible plane tickets, select our "Changes included" or "No cancel fee" filter when you search for flights. For more details on canceling or modifying your reservation, go to "Trips," select your flight and click on "Manage Booking."

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