$84 Cheap Flights from Billings (BIL) to Seattle (SEA)

View $84 flight on Sat, Jan 10, 2026Opens in a new window

Popular airlines from Billings Logan Intl. Airport (BIL) to Seattle-Tacoma International Airport (SEA)

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Today's featured flight deals from Billings Logan Intl. Airport (BIL) to Seattle-Tacoma International Airport (SEA)

Nonstop
Carry-on included
Lower price than typical

Cheap Flights from Billings to Seattle (BIL-SEA)

Prices were available within the past 7 days and start at $84 for one-way flights and $157 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Jan 10 - Sat, Jan 17
BIL
Billings
SEA
Seattle
$157 Roundtrip, found 1 hour ago
$157
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Sat, Jan 10 from Billings to Seattle, returning Sat, Jan 17, priced at $157 found 1 hour ago
Hawaiian Airlines
Sat, Feb 28 - Wed, Mar 4
BIL
Billings
SEA
Seattle
$167 Roundtrip, found 13 hours ago
$167
Roundtrip
found 13 hours ago
Select Hawaiian Airlines flight, departing Sat, Feb 28 from Billings to Seattle, returning Wed, Mar 4, priced at $167 found 13 hours ago
Alaska Airlines
Wed, Jan 14 - Sun, Jan 18
BIL
Billings
SEA
Seattle
$167 Roundtrip, just found
$167
Roundtrip
just found
Select Alaska Airlines flight, departing Wed, Jan 14 from Billings to Seattle, returning Sun, Jan 18, priced at $167 just found
Delta
Sat, Jan 10 - Sat, Jan 17
BIL
Billings
SEA
Seattle
$175 Roundtrip, found 3 days ago
$175
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Jan 10 from Billings to Seattle, returning Sat, Jan 17, priced at $175 found 3 days ago
Delta
Tue, Jan 20 - Sat, Jan 24
BIL
Billings
SEA
Seattle
$177 Roundtrip, found 1 day ago
$177
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Jan 20 from Billings to Seattle, returning Sat, Jan 24, priced at $177 found 1 day ago
Alaska Airlines
Fri, Jan 16 - Mon, Jan 19
BIL
Billings
SEA
Seattle
$177 Roundtrip, just found
$177
Roundtrip
just found
Select Alaska Airlines flight, departing Fri, Jan 16 from Billings to Seattle, returning Mon, Jan 19, priced at $177 just found
Delta
Tue, Mar 3 - Sat, Mar 7
BIL
Billings
SEA
Seattle
$178 Roundtrip, found 13 hours ago
$178
Roundtrip
found 13 hours ago
Select Delta flight, departing Tue, Mar 3 from Billings to Seattle, returning Sat, Mar 7, priced at $178 found 13 hours ago
United
Sat, Jan 10 - Sat, Jan 17
BIL
Billings
SEA
Seattle
$179 Roundtrip, found 3 days ago
$179
Roundtrip
found 3 days ago
Select United flight, departing Sat, Jan 10 from Billings to Seattle, returning Sat, Jan 17, priced at $179 found 3 days ago
United
Sat, Jan 17 - Wed, Jan 21
BIL
Billings
SEA
Seattle
$182 Roundtrip, found 3 hours ago
$182
Roundtrip
found 3 hours ago
Select United flight, departing Sat, Jan 17 from Billings to Seattle, returning Wed, Jan 21, priced at $182 found 3 hours ago
American Airlines
Thu, Jan 29 - Mon, Feb 2
BIL
Billings
SEA
Seattle
$261 Roundtrip, found 20 hours ago
$261
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Thu, Jan 29 from Billings to Seattle, returning Mon, Feb 2, priced at $261 found 20 hours ago

Find the cheapest month to fly from Billings (BIL) to Seattle (SEA)

February is typically the cheapest month to fly

From $147 - $318 per traveler.

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $417
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $417
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
Roundtrip price
$152
Distance
661 mi
Average flight time
1 hour 14 mins

Billings to Seattle Flights

The cheapest times to fly from Billings to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Billings to Seattle are during the month of January. You can find some of the cheapest flights from Billings to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Billings to Seattle

Sunday is one of the best days to book for cheap flights from Billings to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Billings to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Billings to Seattle in 2026. You can also book with separate airlines for your outbound and return journeys, from $84 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Billings to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Billings to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Logan Intl. Airport (BIL) to Seattle - Tacoma Intl. Airport (SEA) cost?
Lock in a cheap one-way flight from $84 or cheap return flight from $157 from Logan Intl. Airport (BIL) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Logan Intl. Airport (BIL) to Seattle - Tacoma Intl. Airport (SEA)?
January is the cheapest month to fly from BIL to SEA. Traveling during quieter months is often the key to scoring lower fares.
Which airlines fly direct from Logan Intl. Airport (BIL) to Seattle - Tacoma Intl. Airport (SEA)?
You can fly nonstop from Logan Intl. Airport (BIL) to Seattle - Tacoma Intl. Airport (SEA) on an Alaska Airlines flight.
What is the cheapest airline that flies from Logan Intl. Airport (BIL) to Seattle - Tacoma Intl. Airport (SEA)?
To find the cheapest airline flying from BIL to SEA, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Logan Intl. Airport (BIL) to Seattle - Tacoma Intl. Airport (SEA)?
On average, Logan Intl. Airport (BIL) only has 1 nonstop flight to Seattle - Tacoma Intl. Airport (SEA) every day. To explore more options, try our easy-to-use filter tool. Simply enter your travel details, then select "1 Stop" or "2+ Stops" to find flights with layovers.
What are the most popular departure times for flights from Logan Intl. Airport (BIL) to Seattle - Tacoma Intl. Airport (SEA)?
The 7 AM departures from BIL to SEA are the most sought after. Greater demand means you'll likely pay more for these departures. If you want to save on your fare, book during off-peak hours.
What day of the week has the most flights from BIL to SEA?
Fly on a Friday if you're looking for the best choice of flights from Logan Intl. Airport (BIL) to Seattle - Tacoma Intl. Airport (SEA).
What is the earliest flight from Logan Intl. Airport (BIL) to Seattle - Tacoma Intl. Airport (SEA)?
The earliest flight departing from Logan Intl. Airport (BIL) is at around 7:40AM UTC-7. Board this flight and you'll touch down at Seattle - Tacoma Intl. Airport (SEA) at approximately 8:59AM UTC-8. The total flight duration is 2h 19m.
How long does it take to fly from Logan Intl. Airport (BIL) to Seattle - Tacoma Intl. Airport (SEA)?
Flights from BIL to SEA have an average travel time of 2 hours and 18 minutes. The distance between the two is 660 mi.
What is the best time to fly from Logan Intl. Airport (BIL) to Seattle - Tacoma Intl. Airport (SEA)?
To avoid possible delays on the Logan Intl. Airport (BIL) to Seattle - Tacoma Intl. Airport (SEA) route, travel before 3 PM. Later departures are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Seattle from Logan Intl. Airport (BIL)?
If you're taking a direct flight from Logan Intl. Airport (BIL) to Seattle, Seattle - Tacoma Intl. Airport (SEA) is the only airport you can land at.
Is it cheaper to buy a plane ticket from Logan Intl. Airport (BIL) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Booking your flight from BIL to SEA shortly before your getaway is generally more expensive. However, if there's some wiggle room with your travel dates and times, you could land a cheap last-minute fare.
Is it cheaper to book a BIL to SEA flight and hotel package?
You'll generally save money by securing a BIL to SEA flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After selecting your preferred accommodations and flights, consider adding extras including activities, car rentals and tours.
Can I cancel or change the date of my flight from Logan Intl. Airport (BIL) to Seattle - Tacoma Intl. Airport (SEA)?
If you reserved your BIL to SEA flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more details.

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*Available to One Key members.