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

Compare Billings to Seattle / Tacoma International flight deals

Find the cheapest month or even day of the year to fly to Seattle / Tacoma International

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Flight deals from Billings to Seattle / Tacoma International

Looking for a cheap last-minute deal or the best return flight from Billings to Seattle / Tacoma International? Find the lowest prices on one-way and return tickets right here.
Seattle.$256 per passenger.Departing Sat, 6 Dec, returning Sun, 7 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from Billings on Sat, 6 Dec, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Sun, 7 Dec, arriving in Billings.Price includes taxes and charges.From $256, select.
Seattle.$304 per passenger.Departing Wed, 18 Feb, returning Wed, 25 Feb.Return flight with Delta.Outbound indirect flight with Delta, departs from Billings on Wed, 18 Feb, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Wed, 25 Feb, arriving in Billings.Price includes taxes and charges.From $304, select.
Seattle.$419 per passenger.Departing Fri, 16 Jan, returning Mon, 19 Jan.Return flight with Hawaiian Airlines.Outbound direct flight with Hawaiian Airlines departs from Billings on Fri, 16 Jan, arriving in Seattle / Tacoma International.Inbound direct flight with Hawaiian Airlines departs from Seattle / Tacoma International on Mon, 19 Jan, arriving in Billings.Price includes taxes and charges.From $419, select.
Seattle.$443 per passenger.Departing Thu, 25 Dec, returning Thu, 1 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Billings on Thu, 25 Dec, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Thu, 1 Jan, arriving in Billings.Price includes taxes and charges.From $443, select.
Seattle.$505 per passenger.Departing Sun, 23 Nov, returning Thu, 27 Nov.Return flight with Hawaiian Airlines.Outbound direct flight with Hawaiian Airlines departs from Billings on Sun, 23 Nov, arriving in Seattle / Tacoma International.Inbound direct flight with Hawaiian Airlines departs from Seattle / Tacoma International on Thu, 27 Nov, arriving in Billings.Price includes taxes and charges.From $505, select.
Seattle.$551 per passenger.Departing Wed, 17 Dec, returning Sat, 20 Dec.Return flight with Hawaiian Airlines.Outbound direct flight with Hawaiian Airlines departs from Billings on Wed, 17 Dec, arriving in Seattle / Tacoma International.Inbound direct flight with Hawaiian Airlines departs from Seattle / Tacoma International on Sat, 20 Dec, arriving in Billings.Price includes taxes and charges.From $551, select.
Seattle.$681 per passenger.Departing Mon, 1 Jun, returning Mon, 8 Jun.Return flight with United.Outbound indirect flight with United, departs from Billings on Mon, 1 Jun, arriving in Seattle / Tacoma International.Inbound indirect flight with United, departs from Seattle / Tacoma International on Mon, 8 Jun, arriving in Billings.Price includes taxes and charges.From $681, select.
Seattle.$740 per passenger.Departing Fri, 22 May, returning Mon, 25 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Billings on Fri, 22 May, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Mon, 25 May, arriving in Billings.Price includes taxes and charges.From $740, select.

Find the cheapest month to fly from Billings to Seattle / Tacoma International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Billings to Seattle / Tacoma International flights are currently cheapest in December.
Nov
from $505
Dec
from $256
Jan
from $419
Feb
from $304
Mar
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Apr
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May
from $740
Jun
from $681
Jul
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Aug
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Sep
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Oct
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Direct flights from Billings to Seattle / Tacoma International

Billings to Seattle / Tacoma International: Alternative routes

Compare routes from Billings to Seattle below. You may find an airport to fly into that's cheaper, faster, or easier than Seattle / Tacoma International.

Billings to Seattle: Flight information

The things to know before you go.
Cheapest flight found$256
Cheapest month to flyDecember
Average flight time2 hrs, 15 mins
Most popular airlineHorizon Air
Average flights per week81

Finding cheap flights from Billings to Seattle / Tacoma International: Frequently asked questions

The best price we found for a return flight from Billings to Seattle / Tacoma International is $256. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
2 hours and 15 minutes is the average flight time from Billings to Seattle / Tacoma International.
Horizon Air, Alaska Airlines and Qatar Airways fly direct from Billings to Seattle / Tacoma International.
As of November 2025, there are 81 flights per week flying from Billings to Seattle / Tacoma International.
The cheapest month to fly from Billings to Seattle / Tacoma International is usually December.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Billings Airport to Seattle / Tacoma International Airport on Saturday, 6 December 2025.
Yes – the average flight time is 2 hours and 15 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle / Tacoma International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Delta and Hawaiian Airlines offer the cheapest flight tickets to Seattle / Tacoma International.

Flying from Billings Logan International Airport (BIL) to Seattle-Tacoma International Airport (SEA): what you need to know

  • Around 2 hours 15 minutes is how long you can expect to be in the air on a direct flight from Billings Logan International Airport to Seattle-Tacoma International Airport.

  • Seattle's timezone is UTC-7, making Seattle one hour behind Billings.

  • Every week, there are 17 Billings Logan International Airport to Seattle-Tacoma International Airport flights. If you prefer to get going as early as possible, take the 07:00 Alaska Airlines flight. If you'd rather make the most of your time before you fly, the latest flight is at 19:30 with Alaska Airlines.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules worth sticking to. Be at the airport with enough time to board your BIL to SEA flight.

  • Travelling during a peak time like July? School holidays and other high seasons can mean longer queues at airport checkpoints. Play things extra safe and arrive up to four hours ahead of an international flight and two hours before a domestic departure.

  • Alaska Airlines offers direct flights from Billings Logan International Airport to Seattle-Tacoma International Airport. Book with this popular airline, then get ready to see the sights in Seattle — and maybe even more of United States if time allows.

  • The majority of passengers choose to fly with Alaska Airlines on this route.

  • With a dependable 90.32% of services arriving as planned, Alaska Airlines is the most punctual carrier operating BIL to SEA flights.

  • If you want to explore another city along the way, just uncheck 'Direct flights only' when searching for your ticket from Billings Logan International Airport to Seattle-Tacoma International Airport. These are the most popular stopovers between BIL and SEA:

    • Salt Lake City International Airport

    • Denver International Airport

    • Harry Reid Airport (formerly McCarran Airport)

How to find the cheapest flights from Billings Logan International Airport (BIL) to Seattle-Tacoma International Airport (SEA)

  • The cheapest price we've seen for a one-way Billings Logan International Airport to Seattle-Tacoma International Airport flight is $124. A round-trip ticket is currently $256. Depending on the availability when you book, these fares could change.

  • To score cheap tickets from BIL to SEA, book your journey four months before your departure date.

  • The cheapest month for flights from Billings Logan International Airport to Seattle-Tacoma International Airport is March. Use the 'Whole month' tool to find the lowest airfares if you have flexible travel dates.

  • Cut down on the time spent looking for cheap flights from BIL to SEA by creating a Price Alert. You'll get an email or push notification on the app when a new low fare is offered.

  • Discover the perfect flight for you with the help of the filters. To see the 'Best,' 'Cheapest' or 'Fastest' flights from Billings Logan International Airport to Seattle-Tacoma International Airport, use the 'Sort by' function. You can also filter results by departure and arrival times, airline, and number of stops.

Handy information about Billings Logan International Airport (BIL)

  • BIL is located at 1901 Terminal Circle, Room 216.

  • Of the departures from Billings Logan International Airport, 75.96% arrive on time at their destination.

  • Central Billings to Billings Logan International Airport is around 5 kilometres. Depending on traffic, it'll take you about 10 minutes to get there if you're driving, catching a cab or ride-sharing.

  • Taking public transport? You can expect a journey time of around 25 minutes.

  • Booked an early flight from Billings Logan International Airport to Seattle-Tacoma International Airport? Avoid rushing to the terminal (and catch some extra z's) by picking one of these stays close to BIL:

Arriving at Seattle-Tacoma International Airport (SEA)

Getting from Seattle-Tacoma International Airport (SEA) to central Seattle

  • From Seattle-Tacoma International Airport, Seattle is approximately 23 kilometres away. It takes around 20 minutes to get to the centre driving.

  • It typically takes 55 minutes when travelling by public transport.

When to fly to Seattle-Tacoma International Airport (SEA)

  • July is the busiest month for flights from Billings Logan International Airport to Seattle-Tacoma International Airport. To steer clear of the crowds, visit Seattle in May.

  • Before locking in your flight from Billings Logan International Airport to Seattle-Tacoma International Airport, think about the kind of weather you like. August is the warmest month in Seattle, with temperatures ranging from 12ºC (54ºF) to 28ºC (82ºF).

  • Look for cheap tickets from BIL to SEA in February if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between -1ºC (30ºF) and 11ºC (52ºF) on average.

Explore more of United States

  • Seattle is easy to fall in love with, but there are so many other parts of United States just waiting to be explored. Around 241 kilometres south of Seattle, a visit to Portland will keep you on the go. Check out popular attractions like Pioneer Courthouse Square, Portland Japanese Garden and Pittock Mansion.

  • Spokane is another well-known destination in United States and is around 370 kilometres east of Seattle. No trip is complete without a visit to Manito Park, Northwest Museum of Arts & Culture and Spokane Falls.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.