HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$129+ Cheap flights from Billings to Seattle (BIL - SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — SEA
May 14 — May 211
Thu 5/14
Thu 5/21
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Billings to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Billings Logan Intl to Seattle/Tacoma Intl are usually found in September or March, booked 63 days in advance, depart on a Thursday or Wednesday and return on a Tuesday

Cheap flight deals from Billings to Seattle

Cheapest flights from Billings to Seattle
Explore the most affordable flight options available from Billings to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 14, 2026.

This Expedia deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:21 pm
BIL
-
SEA
Nonstop2h 12m
Alaska Airlines
Sat 6/63:47 pm
SEA
-
BIL
Nonstop1h 54m
Alaska Airlines
Deal found 4/9$187
This Expedia deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/67:21 pm
BIL
-
SEA
Nonstop2h 12m
Alaska Airlines
Fri 6/128:59 pm
SEA
-
BIL
Nonstop1h 52m
Alaska Airlines
Deal found 4/13$227
This Alaska Airlines deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/52:06 pm
BIL
-
SEA
Nonstop2h 07m
Alaska Airlines
Sat 5/99:12 am
SEA
-
BIL
Nonstop1h 55m
Alaska Airlines
Deal found 4/9$237
This Trip.com deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/256:00 am
BIL
-
SEA
Nonstop2h 07m
Alaska Airlines
Mon 6/18:39 pm
SEA
-
BIL
Nonstop1h 54m
Alaska Airlines
Deal found 4/10$249
This Alaska Airlines deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/176:00 am
BIL
-
SEA
Nonstop2h 07m
Alaska Airlines
Sun 5/178:45 am
SEA
-
BIL
1 stop5h 09m
Alaska Airlines
Deal found 4/10$251
This Expedia deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:21 pm
BIL
-
SEA
Nonstop2h 12m
Alaska Airlines
Wed 5/203:47 pm
SEA
-
BIL
Nonstop1h 54m
Alaska Airlines
Deal found 4/12$252
This CheapOair deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/227:21 pm
BIL
-
SEA
Nonstop2h 12m
Alaska Airlines
Sun 5/248:39 pm
SEA
-
BIL
Nonstop1h 54m
Alaska Airlines
Deal found 4/14$272

Find flight deals from Billings to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Billings (BIL) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$187
(Expedia)

One-way from

$129
(CheapOair)

Popular in

July

Cheapest in

September

Average price

$272

Good round-trip deal

$357 or less

Good one-way deal

$273 or less
Provider with most accurate pricing for Billings Logan Intl-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Billings Logan Intl-Seattle/Tacoma Intl flights.
Search Deals
From Billings Logan Intl to Seattle/Tacoma Intl
Search Deals
One-way flight from Billings Logan Intl to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($25 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from Billings Logan Intl to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from Billings Logan Intl to Seattle/Tacoma Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Billings to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 14, 2026.
Use the filters below to find and compare flights from Billings to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

BillingsSeattle

BIL - SEA

BILSEA

Billings Logan Intl

Tue 5/5

2:06 pm-3:13 pm

Nonstop2h 07m

Seattle/Tacoma Intl

Sat 5/9

8:25 am-1:26 pm

1 stop4h 01m

$217

BillingsSeattle

BIL - SEA

BILSEA

Billings Logan Intl

Tue 5/5

5:05 am-9:40 am

1 stop5h 35m

Seattle/Tacoma Intl

Sat 5/9

5:02 am-1:23 pm

1 stop7h 21m

$277

BillingsSeattle

BIL - SEA

BILSEA

Billings Logan Intl

Wed 6/3

6:00 pm-11:10 pm

1 stop6h 10m

Seattle/Tacoma Intl

Wed 6/10

5:00 am-1:22 pm

1 stop7h 22m

$364

BillingsSeattle

BIL - SEA

BILSEA

Billings Logan Intl

Wed 5/20

3:34 pm-6:02 am

1 stop15h 28m

Seattle/Tacoma Intl

Sat 5/23

4:18 pm-2:54 pm

2 stops21h 36m

$421

BillingsSeattle

BIL - SEA

BILSEA

Billings Logan Intl

Mon 5/25

6:00 am-7:07 am

Nonstop2h 07m

Seattle/Tacoma Intl

Mon 6/1

5:00 pm-2:54 pm

2 stops20h 54m

$428

BillingsSeattle

BIL - SEA

BILSEA

Billings Logan Intl

Sat 5/9

12:47 pm-9:59 pm

2 stops10h 12m

Seattle/Tacoma Intl

Sun 5/10

8:25 am-1:26 pm

1 stop4h 01m

$446

BillingsSeattle

BIL - SEA

BILSEA

Billings Logan Intl

Thu 6/4

3:34 pm-8:57 am

2 stops18h 23m

Seattle/Tacoma Intl

Sun 6/7

8:39 pm-11:33 pm

Nonstop1h 54m

$452
Cheapest one-way
Quickest one-way

BillingsSeattle

BIL - SEA

BILSEA

Billings Logan Intl

Tue 5/19

7:21 pm-8:33 pm

Nonstop2h 12m

$129

BillingsSeattle

BIL - SEA

BILSEA

Billings Logan Intl

Fri 6/19

7:22 pm-8:35 pm

Nonstop2h 13m

$164

BillingsSeattle

BIL - SEA

BILSEA

Billings Logan Intl

Fri 5/1

10:04 am-8:51 pm

1 stop11h 47m

$167

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/9

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Compare providers for flights from Billings to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Billings to Seattle in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Billings-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Billings-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Billings-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Billings-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Billings-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Billings to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Billings with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Billings to Seattle

How far ahead should I book a flight from Billings to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Billings to Seattle. Price data was last updated on April 10, 2026.

To ensure you get the cheapest price possible for a flight from Billings to Seattle, you should look to book at least 63 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Billings to Seattle?

Currently, March is the cheapest month in which you can book a flight from Billings to Seattle (average of $137). Flying from Billings to Seattle in July is currently the most expensive (average of $261). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BIL to SEA?

Find hourly flight availability from Billings to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 14, 2026.

One of the essential ways to save on airfare from Billings to Seattle is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 27% on airfare.

What is the cheapest day to fly from Billings to Seattle?

Use this chart to determine the cheapest time to fly round-trip from Billings to Seattle. Price data was last updated on April 11, 2026.

Travelers seeking maximum savings on their Billings to Seattle flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Billings to Seattle?

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated April 14, 2026.
Get a feel of what it's like to fly with Alaska Airlines and Hawaiian Airlines from Billings to Seattle by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,235 reviews

Entertainment

7.0

Crew

8.5

Food

7.0

Boarding

8.1

Overall

7.9

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Alaska Airlines
7.9
Good
12,235 reviews
Alaska Airlines
7.9
Good
12,235 reviews

Entertainment

7.0

Crew

8.5

Food

7.0

Boarding

8.1

Overall

7.9

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Hawaiian Airlines
7.8
Good
2,838 reviews
Alaska Airlines
7.9
Good
12,235 reviews

Entertainment

7.0

Crew

8.5

Food

7.0

Boarding

8.1

Overall

7.9

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well

Related info for your journey

Find useful and relevant information for your journey from Billings to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Billings to Seattle?

    To fly from Billings to Seattle, you need to book a flight from Billings Logan Intl (BIL) to Seattle/Tacoma Intl (SEA). Nonstop flights to Seattle/Tacoma Intl from Billings Logan Intl take 2h 06m on average. When it comes time to book airfare, you have a few options: there are 6 outbound flights from Billings Logan Intl to Seattle/Tacoma Intl offered by 2 different airlines.

  • How popular is this Billings to Seattle flight route?

    Flights from Billings Logan Intl to Seattle/Tacoma Intl have been viewed 12 times in the past calendar month.

  • How long is the flight from Billings to Seattle?

    For as low as $217, Alaska Airlines can have you in Seattle from Billings in 2h 07m. Billings and Seattle are separated by a distance of 662 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Billings to Seattle round-trip?

    Flying on Alaska Airlines is currently your cheapest option to Seattle, with prices starting at $157. Another option worth looking into is Hawaiian Airlines, starting at $177 round trip. Alaska Airlines is currently priced 48% below the average price you’ll pay for this route.

  • What are the most reliable airlines from Billings to Seattle?

    No one likes to see their flight delayed. When booking a flight from Billings to Seattle consider choosing Hawaiian Airlines (90%), Alaska Airlines (89%) or Horizon Air (89%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Billings to Seattle?

    On average you can expect to pay $700 for a flight from Billings to Seattle. The cheapest flight overall is $217 while the most popular route, (Billings Logan Intl - Seattle/Tacoma Intl) is currently priced at $302.

  • Can I find deals for flights from Billings to Seattle that include hotel bookings?

    Yes. In addition to deals on Billings to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Billings to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Billings to Seattle.

  • Can I find deals for business class flights from Billings to Seattle?

    Yes. Cheapflights offers flight deals from Billings to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Billings to Seattle?

    Currently, March is the cheapest month in which you can book a flight from Billings to Seattle (average of $137). Flying from Billings to Seattle in July is currently the most expensive (average of $261). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Ocean Shores
Olympia
Lynnwood
Lacey
Kent
Edmonds
Leavenworth
Snoqualmie
Tumwater
Tukwila
Renton
Puyallup
Kirkland
Ellensburg
Fife
Lakewood
Issaquah
Shoreline

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 2 airlines flying from Billings to Seattle

Discover the top 2 airlines that operate flights from Billings to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$157Average$315FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$177Average$318FlexibilityNo cancel feeOn-time85%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.