Q: How long does a flight from Boston to Seattle take?

A direct flight to Seattle will take on average 6h 19m to travel the 6,441 km flying distance from Boston. Visit our flight page for the latest deals!>/a>

Q: How many flights are there between Boston and Seattle per day?

Each day, there are 4 nonstop flights that take off from Boston and land in Seattle, with an average flight time of 6h 31m. The most common departure time is 6:00 p.m. and most flights take off in the morning. Each week, there are 28 flights and there are the same amount of flights each day (4). Visit our flight page for the latest deals!>/a>

Q: How many flights are there between Boston and Seattle per day?

Each day, there are 4 nonstop flights that take off from Boston and land in Seattle, with an average flight time of 6h 31m. The most common departure time is 6:00 p.m. and most flights take off in the morning. Each week, there are 28 flights and there are the same amount of flights each day (4). Visit our flight page for the latest deals!>/a>

Q: What’s the cheapest day of the week to fly from Boston to Seattle?

For Boston to Seattle, Wednesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Seattle back to Boston, the best deals are generally found on Monday, with Sunday being the most expensive. Visit our flight page for the latest deals!>/a>

Q: What’s the cheapest day of the week to fly from Boston to Seattle?

For Boston to Seattle, Wednesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Seattle back to Boston, the best deals are generally found on Monday, with Sunday being the most expensive. Visit our flight page for the latest deals!>/a>

Q: What’s the earliest departure time from Boston to Seattle?

Early birds can take the earliest flight from Boston at 7:00 am and will be landing in Seattle at 10:33 am.

Question 1

How long does a flight from Boston to Seattle take?

Accepted Answer

A direct flight to Seattle will take on average 6h 19m to travel the 6,441 km flying distance from Boston. Visit our flight page for the latest deals!>/a>

Question 2

How many flights are there between Boston and Seattle per day?

Accepted Answer

Each day, there are 4 nonstop flights that take off from Boston and land in Seattle, with an average flight time of 6h 31m. The most common departure time is 6:00 p.m. and most flights take off in the morning. Each week, there are 28 flights and there are the same amount of flights each day (4). Visit our flight page for the latest deals!>/a>

Question 3

How many flights are there between Boston and Seattle per day?

Accepted Answer

Each day, there are 4 nonstop flights that take off from Boston and land in Seattle, with an average flight time of 6h 31m. The most common departure time is 6:00 p.m. and most flights take off in the morning. Each week, there are 28 flights and there are the same amount of flights each day (4). Visit our flight page for the latest deals!>/a>

Question 4

What’s the cheapest day of the week to fly from Boston to Seattle?

Accepted Answer

For Boston to Seattle, Wednesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Seattle back to Boston, the best deals are generally found on Monday, with Sunday being the most expensive. Visit our flight page for the latest deals!>/a>

Question 5

What’s the cheapest day of the week to fly from Boston to Seattle?

Accepted Answer

For Boston to Seattle, Wednesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Seattle back to Boston, the best deals are generally found on Monday, with Sunday being the most expensive. Visit our flight page for the latest deals!>/a>

Question 6

What’s the earliest departure time from Boston to Seattle?

Accepted Answer

Early birds can take the earliest flight from Boston at 7:00 am and will be landing in Seattle at 10:33 am.

Question 7

What’s the latest departure time from Boston to Seattle?

Accepted Answer

If you prefer to fly at night, the latest flight from Boston to Seattle jets off at 6:57 pm and lands at 10:25 pm.

Question 8

Which airlines offer Wi-Fi service onboard planes from Boston to Seattle?

Accepted Answer

All the following airlines offer inflight Wi-Fi service on the Boston to Seattle flight route: JetBlue, Alaska Airlines, American Airlines, Hawaiian Airlines, Delta, and WestJet.

Question 9

Which aircraft models fly most regularly from Boston to Seattle?

Accepted Answer

The Airbus A321neo is the aircraft model that flies most regularly on the Boston to Seattle flight route.

Question 10

On which days can I fly direct from Boston to Seattle?

Accepted Answer

There are direct flights from Boston to Seattle on a daily basis.

Question 11

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

Accepted Answer

The cheapest month for flights from Boston to Seattle is March, where tickets cost C$ 383 (return) on average. On the other hand, the most expensive months are December and August, where the average cost of round-trip tickets is C$ 719 and C$ 584 respectively.

Question 12

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

Accepted Answer

The cheapest month for flights from Boston to Seattle is March, where tickets cost C$ 383 (return) on average. On the other hand, the most expensive months are December and August, where the average cost of round-trip tickets is C$ 719 and C$ 584 respectively.

Question 13

How does KAYAK find such low prices on flights from Boston to Seattle?

Accepted Answer

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Seattle. <a href='/flight-routes/Boston-Logan-Intl-BOS/Seattle-Tacoma-Intl-SEA'>Visit our flight page for the latest deals!>/a>

Question 14

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Seattle?

Accepted Answer

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Boston is likely to change within 7 days, so travelers know whether to wait or book now. <a href='/flight-routes/Boston-Logan-Intl-BOS/Seattle-Tacoma-Intl-SEA'>Visit our flight page for the latest deals!>/a>

Question 15

What is the Hacker Fare option on flights from Boston to Seattle?

Accepted Answer

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Boston with another airline. <a href='/flight-routes/Boston-Logan-Intl-BOS/Seattle-Tacoma-Intl-SEA'>Visit our flight page for the latest deals!>/a>

Question 16

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Seattle?

Accepted Answer

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. <a href='/flight-routes/Boston-Logan-Intl-BOS/Seattle-Tacoma-Intl-SEA'>Visit our flight page for the latest deals!>/a>

Question 17

How often are flights from Boston to Seattle delayed?

Accepted Answer

Weekly flights between Boston and Seattle historically see delays in approximately 14% of cases, with the average delay over the past year being 167 minutes.

Question 18

Which airline has the best punctuality record on Boston to Seattle flights?

Accepted Answer

Based on our data, Delta have experienced the fewest delays on this route in the past 12 months, with only about 12% of their flights encountering any delays.

Question 19

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Statistically, Sunday is the day of the week with the fewest delays on this flight route, while Friday has typically experienced more delays than other days.

Question 20

What is the most punctual flight time for Boston to Seattle flights?

Accepted Answer

Typically, flights leaving in the morning tend to face fewer delays, whereas flights in the evening have historically encountered delays more often.

Question 21

Which cabin class options are there for flights between Boston and Seattle?

Accepted Answer

There is only one cabin class option available for the route, which is Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Question 22

Which cabin class options are there for flights between Boston and Seattle?

Accepted Answer

There is only one cabin class option available for the route, which is Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Question 23

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

Accepted Answer

To get a below average price on the flight from Boston to Seattle, you should book around 2 weeks before departure, which saves you about 31% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Question 24

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

Accepted Answer

To get a below average price on the flight from Boston to Seattle, you should book around 2 weeks before departure, which saves you about 31% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Low season	January
High season	July

BOS - SEA

Find cheap flights from Boston to Seattle

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

Everything you should know

Cheap Flights from Boston to Seattle (BOS-SEA)

Recent round-trip flight deals from Boston to Seattle

Recent one-way flight deals from Boston to Seattle

KAYAK's insights & trends for Boston to Seattle flights

Get data-powered insights and trends into flights from Boston to Seattle to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Boston to Seattle?

For Boston to Seattle, Wednesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Seattle back to Boston, the best deals are generally found on Monday, with Sunday being the most expensive.

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

The cheapest month for flights from Boston to Seattle is March, where tickets cost C$ 383 (return) on average. On the other hand, the most expensive months are December and August, where the average cost of round-trip tickets is C$ 719 and C$ 584 respectively.

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

To get a below average price on the flight from Boston to Seattle, you should book around 2 weeks before departure, which saves you about 31% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

How often are flights from Boston to Seattle delayed?

Weekly flights between Boston and Seattle historically see delays in approximately 14% of cases, with the average delay over the past year being 167 minutes.

What is the most punctual flight time for Boston to Seattle flights?

Typically, flights leaving in the morning tend to face fewer delays, whereas flights in the evening have historically encountered delays more often.

What day of the week experiences the fewest flight delays on this route?

Statistically, Sunday is the day of the week with the fewest delays on this flight route, while Friday has typically experienced more delays than other days.

Which airline has the best punctuality record on Boston to Seattle flights?

Based on our data, Delta have experienced the fewest delays on this route in the past 12 months, with only about 12% of their flights encountering any delays.

Which cabin class options are there for flights between Boston and Seattle?

There is only one cabin class option available for the route, which is Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How many flights are there between Boston and Seattle per day?

Each day, there are 4 nonstop flights that take off from Boston and land in Seattle, with an average flight time of 6h 31m. The most common departure time is 6:00 p.m. and most flights take off in the morning. Each week, there are 28 flights and there are the same amount of flights each day (4).

How long does a flight from Boston to Seattle take?

A direct flight to Seattle will take on average 6h 19m to travel the 6,441 km flying distance from Boston.

What’s the earliest departure time from Boston to Seattle?

Early birds can take the earliest flight from Boston at 7:00 am and will be landing in Seattle at 10:33 am.

What’s the latest departure time from Boston to Seattle?

If you prefer to fly at night, the latest flight from Boston to Seattle jets off at 6:57 pm and lands at 10:25 pm.

Expert advice for your flight from Boston to Seattle

Good to know

When to book flights from Boston to Seattle

Flights from Boston to Seattle: the best tips from KAYAK users' own experiences

FAQs for booking flights from Boston to Seattle

Which airlines offer Wi-Fi service onboard planes from Boston to Seattle?

All the following airlines offer inflight Wi-Fi service on the Boston to Seattle flight route: JetBlue, Alaska Airlines, American Airlines, Hawaiian Airlines, Delta, and WestJet.

Which aircraft models fly most regularly from Boston to Seattle?

The Airbus A321neo is the aircraft model that flies most regularly on the Boston to Seattle flight route.

On which days can I fly direct from Boston to Seattle?

There are direct flights from Boston to Seattle on a daily basis.

How does KAYAK find such low prices on flights from Boston to Seattle?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Seattle.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Seattle?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Boston to Seattle?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Boston with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Seattle?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Boston to Seattle

Prefer to fly direct from Boston to Seattle?

Everything you need to know for your flight from Boston to Seattle

Information on your arrival and departure airports

Cabin class types available on flights from Boston to Seattle

Complete your trip to Seattle with a hotel stay or car rental

Find direct flights to and from Boston and Seattle

Flights to other popular destinations

Flights from domestic origins to Seattle

Find deals for your return flight