Question 1

What days are nonstop flights available from Boston to Seattle?

Accepted Answer

Nonstop flights can be found on the following days: Sunday, Monday, Tuesday, Wednesday, Thursday, Friday.

Question 2

How popular is this Boston to Seattle flight route?

Accepted Answer

Flights from Boston Logan Intl to Seattle/Tacoma Intl have been viewed 76 times in the past calendar month.

Question 3

How many flights depart from Boston to Seattle on average per day?

Accepted Answer

15 flight departures from Boston to Seattle per day on average.
Morning (6am - Noon) - 47% of flight departures
Afternoon (Noon - 6pm) - 33% of flight departures
Evening (6pm - Midnight) - 20% of flight departures

Question 4

How long is the flight from Boston to Seattle?

Accepted Answer

Departing from Boston to Seattle will take you 16h 21m. The distance between Boston and Seattle is about 2502 mi.

Question 5

What is the cheapest airline to fly from Boston to Seattle round-trip?

Accepted Answer

According to our current data, Spirit Airlines ($208), offers the cheapest pricing from Boston to Seattle. This flight start at 41% lower than the current average price 3 months from now.

Question 6

What are the cheapest airlines to fly from Boston to Seattle one-way?

Accepted Answer

One-way options have recently been found by users for as low as $99 on Spirit Airlines. Other airlines that offer cheap prices include Sun Country Air from $130 and United Airlines from $139 one-way.

Question 7

When is the best time to book a flight from Boston to Seattle?

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Boston to Seattle (average of $247). Flying from Boston to Seattle in July is currently the most expensive (average of $407). 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.

January

$247

February

$254

March

$288

April

$294

May

$318

June

$404

July

$407

August

$344

September

$278

October

$256

November

$258

December

$248

Question 8

When is the best time to book a flight from Boston to Seattle?

Accepted Answer

The price you pay for your flight from Boston to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 30 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Question 9

When is the cheapest time to fly from Boston to Seattle?

Accepted Answer

Travelers seeking maximum savings on their Boston to Seattle flight should consider departing on Saturday at noon when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Question 10

How recently were the Boston to Seattle flight deals updated?

Accepted Answer

The Boston to Seattle flight deals you see on this page were last updated on 5/18.

Question 11

What are the most popular airlines that fly from Boston to Seattle?

Accepted Answer

Before booking your flight from Boston to Seattle check out the most popular airlines for this route: Undisclosed Carrier, American Airlines or Alaska Airlines.

Question 12

What are the cheapest flights from Boston to Seattle?

Accepted Answer

On average you can expect to pay $1,083 for a flight from Boston to Seattle. The cheapest flight overall is $143 while the most popular route, (Boston Logan Intl - Seattle/Tacoma Intl) is currently priced at $199.

Question 13

What are the most reliable airlines from Boston to Seattle?

Accepted Answer

Consider China Eastern (95%), Air Tahiti Nui (90%) or Virgin Atlantic (89%) when booking your flight. These represent the most reliable airlines when flying from Boston to Seattle.

Question 14

Can I find flights from Boston to Seattle for under $300 on Cheapflights?

Accepted Answer

Yes, there are multiple flights from Boston to Seattle for under $300. The cheapest flight booked recently is on Spirit Airlines for just $208, but on average you can expect to pay $237.

Question 15

Are there nonstop flights from Boston to Seattle for under $300 on Cheapflights?

Accepted Answer

Cheapflights has at least 20 direct flights from Boston to Seattle under $300. A good price for a nonstop flight from Boston to Seattle is less than $346.

Question 16

Are there last-minute flights available from Boston to Seattle for under $300?

Accepted Answer

There are currently 20+ open flights from Boston to Seattle within the next 7 days for less than $300.

Question 17

What is the cheapest day to fly round-trip from Boston to Seattle?

Accepted Answer

Tuesday is generally a great day to depart. Flying on this day could help you save up to 9%.

Question 18

How far in advance should I book a flight from Boston to Seattle?

Accepted Answer

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 31 days in advance, which can save you up to 33% on flights from Boston to Seattle compared to booking the week you need them. Waiting 31 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $331. For sooner than that we have options available in the next 3 days from $557.

Question 19

What is the cheapest month to fly from Boston to Seattle?

Accepted Answer

January can be a great time to fly to Seattle from Boston with a flight ticket averaging about $357. Cheapflights users have found deals in the month of January for as cheap as $99. The most expensive prices can be found in the month of August.

Question 20

When is the cheapest time to fly from Boston to Seattle (BOS - SEA)?

Accepted Answer

One of the essential ways to save on airfare from Boston 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 evening could potentially save you up to 34% on airfare.

Question 21

What airports do I use to fly from Boston to Seattle?

Accepted Answer

You will need to book a flight from Boston Logan Intl to Seattle/Tacoma Intl if you want to fly from Boston to Seattle. At least 8 different airlines have flights from Logan Intl (BOS) to Seattle/Tacoma Intl (SEA) on a regular basis. There are 22 flights to Seattle from the Boston airport per day. If you manage to book one that is nonstop, then you can expect the flight time from BOS to SEA to be around 6h 03m.

Question 22

Accepted Answer

If you’re traveling from Boston to Seattle, one of the more common airlines traveling that route is Spirit Airlines. Boston to Seattle flights are typically 54% cheaper than other airlines traveling the same route. Flights from Spirit Airlines typically cost $382.46 RT. The cheapest Spirit Airlines flight found for this route was $139. When traveling from Boston to Seattle on Spirit Airlines, the most popular airport to depart from is Boston Logan Intl Airport and the most popular airport to arrive at is Seattle/Tacoma Intl Airport. When flying from Boston to Seattle, Spirit Airlines flights are 8% more popular than any other airline flying that same route.

Question 23

Accepted Answer

If you’re traveling from Boston to Seattle, one of the more common airlines traveling that route is American Airlines. Flights from American Airlines traveling this route typically cost $386.20 RT. This price is typically 73% more expensive than other airlines that offer Boston to Seattle flights. When booking this route, the cheapest RT price found was $139. The most popular departure airport in Boston when flying to Seattle is Boston Logan Intl Airport. The most popular airport to fly into when visiting Seattle is Seattle/Tacoma Intl Airport. When flying from Boston to Seattle, American Airlines flights are 8% more popular than any other airline flying that same route.

Question 24

What does BOS to SEA mean?

Accepted Answer

Boston Logan Intl Airport is BOS and Seattle/Tacoma Intl Airport is SEA. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.

Question 25

Can I find deals for flights from Boston to Seattle that include extra baggage allowance?

Accepted Answer

The amount of baggage you can bring on your Boston to Seattle flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

Question 26

Can I find deals on flights from Boston to Seattle with specific airlines?

Accepted Answer

Yes, Cheapflights allows you to browse and filter Boston to Seattle flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

Question 27

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

Accepted Answer

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

Question 28

How can I find direct flights from Boston to Seattle?

Accepted Answer

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

Question 29

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

Accepted Answer

Yes. Cheapflights offers flight deals from Boston 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.

Question 30

Can I find deals for flights from Boston to Seattle that allow pets onboard?

Accepted Answer

Many airlines flying from Boston to Seattle offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

Question 31

Can I find deals on last-minute flights from Boston to Seattle?

Accepted Answer

Yes, you can often find last-minute deals on Boston to Seattle flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

Question 32

How does Cheapflights help users find flights from Boston to Seattle?

Accepted Answer

When you search for this flight from Boston to Seattle, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Question 33

Why should you use Cheapflights to find cheap flight tickets from Boston to Seattle?

Accepted Answer

Cheapflights helps you find that perfect flight to Seattle from Boston by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Question 34

Can Cheapflights find flights from Boston to Seattle with no change fees?

Accepted Answer

Users can book flights with no change fees policies with our dedicated filters. Book flights from Boston to Seattle flexibly with Cheapflights today.

Question 35

Can Cheapflights notify me if prices for flights from Boston to Seattle become cheaper?

Accepted Answer

Of course! You can now track prices for flights from Boston to Seattle and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$116	Average$293	FlexibilityNo cancel fee	On-time65%	Search Spirit Airlines flights
JetBlue	Cheapest$129	Average$373	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
United Airlines	Cheapest$138	Average$316	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Alaska Airlines	Cheapest$139	Average$382	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines flights
Delta	Cheapest$139	Average$386	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Sun Country Air	Cheapest$173	Average$372	FlexibilityNo cancel fee	On-time83%	Search Sun Country Air flights
American Airlines	Cheapest$203	Average$471	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

10%of flight departures	Early morningMidnight to 6 am
59%of flight departures	Morning6 am to noon
29%of flight departures	AfternoonNoon to 6 pm
2%of flight departures	Evening6 pm to midnight

Popular in	August
Cheapest in	January
Round-trip from	$247
One-way from	$139

Sunday	22daily flights
Monday	23daily flights
Tuesday	25daily flights
Wednesday	21daily flights
Thursday	22daily flights
Friday	25daily flights
Saturday	20daily flights

Cheap flights from Boston to Seattle (BOS - SEA) from $99

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 8/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.

The best prices from Boston Logan Intl to Seattle/Tacoma Intl are usually found in January or February, booked 30 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from Boston to Seattle

Popular in

Cheapest in

Round-trip from

One-way from

What is the cheapest day to fly round-trip from Boston to Seattle?

How far in advance should I book a flight from Boston to Seattle?

What is the cheapest month to fly from Boston to Seattle?

When is the cheapest time to fly from Boston to Seattle (BOS - SEA)?

Cheap Spirit Airlines flights from Boston to Seattle

Find some of the cheapest Spirit Airlines flights traveling from Boston to Seattle. Make sure to double check the flight details before booking.

Cheap American Airlines flights from Boston to Seattle

Some of the lowest-priced American Airlines flights we've found at this time heading from Boston to Seattle. Deals frequently update to provide users with more options.

Cheap Boston to Seattle flights in May & June 2024

Find cheap flight options from Boston to Seattle specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,634,509 searches. Prices were last updated on May 19, 2024.

The lowest fares we've come across on flights traveling from Boston to Seattle in May and June 2024. Check back soon for alternative fares.

Boston to Seattle 2024 flight deals

Discover exclusive flight deals for travel between Boston and Seattle in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,634,509 searches. Data last updated May 19, 2024.

The lowest fares we've come across on flights traveling from Boston to Seattle in May and June 2024. Check back soon for alternative fares.

Non-stop flights to Seattle from Boston

Consider booking one of these non-stop flights heading from Boston to Seattle. If you're looking for other options for flights from Boston to Seattle, make sure to update the search form at the top of page.

Boston to Seattle flights leaving soon

Book one of these great deals on flights from Boston to Seattle. Tip: verify your flight details before completing your reservation.

One-way flights to Seattle from Boston

If you're seeking multiple options on one-way flights from Boston to Seattle, be sure to check out these deals, which are updated often. For those needing a return trip from Boston, there is a search form available above.

Find flights from Boston to Seattle within your budget

When is the best time to book a flight from Boston to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Boston to Seattle. Price data was last updated on May 10, 2024.

The price you pay for your flight from Boston to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 30 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

When is the cheapest time to fly from Boston to Seattle?

Use this chart to determine the cheapest time to fly round-trip from Boston to Seattle. Price data was last updated on May 12, 2024.

Average price of flights to Seattle by month

Plan your trip from Boston to Seattle by taking into account the cheapest months to travel. The average price of a one-way flight from Boston to Seattle is currently $115 while a round-trip flight costs $270. Price data was last updated on May 12, 2024.

Temperature and rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average temperature and rainfall totals by month.

Reviews of airlines servicing Seattle

To help decide which airline to fly from Boston to Seattle, see what other customers have to say about Spirit Airlines, American Airlines and Alaska Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Boston 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 Boston to Seattle?

Can I find flights from Boston to Seattle for under $300 on Cheapflights?

Are there nonstop flights from Boston to Seattle for under $300 on Cheapflights?

Are there last-minute flights available from Boston to Seattle for under $300?

What days are nonstop flights available from Boston to Seattle?

How popular is this Boston to Seattle flight route?

How many flights depart from Boston to Seattle on average per day?

How long is the flight from Boston to Seattle?

What is the cheapest airline to fly from Boston to Seattle round-trip?

What are the cheapest airlines to fly from Boston to Seattle one-way?

What are the most popular airlines that fly from Boston to Seattle?

What are the most reliable airlines from Boston to Seattle?

What are the cheapest flights from Boston to Seattle?

What does BOS to SEA mean?

Can I find deals for flights from Boston to Seattle that include extra baggage allowance?

Can I find deals on flights from Boston to Seattle with specific airlines?

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

How can I find direct flights from Boston to Seattle?

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

Can I find deals for flights from Boston to Seattle that allow pets onboard?

Can I find deals on last-minute flights from Boston to Seattle?

How recently were the Boston to Seattle flight deals updated?

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.

Fly from Boston to Seattle on these airlinesChoose from the following airlines for your flight from Boston to Seattle. Flights are based on user searches made on Cheapflights and were last updated on May 19, 2024.

Choose from the following airlines for your flight from Boston to Seattle. Flights are based on user searches made on Cheapflights and were last updated on May 19, 2024.

Top 7 airlines flying from Boston to Seattle

Popular flight searches

Check out other popular destinations found by fellow travelers in 2024

Search flights from Boston to Seattle by cabin class

Find flights from Boston to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Hourly flight availability from Boston to Seattle

Find hourly flight availability from Boston 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 May 19, 2024.

Weekly flight availability from Boston to Seattle

Explore weekly flight availability from Boston to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 19, 2024.

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User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations

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Fly from Boston to Seattle on these airlines
Choose from the following airlines for your flight from Boston to Seattle. Flights are based on user searches made on Cheapflights and were last updated on May 19, 2024.