How popular is this Seattle to Boston flight route?

Within the past month, 12 users have taken a look at flights from Seattle/Tacoma Intl to Boston Logan Intl.

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

Our cheapest airline available from Seattle to Boston is Delta. Our recent data shows that you can find tickets from as low as $217 on this airline. Additional options worth looking into are Alaska Airlines and Hawaiian Airlines, starting at $227 and $237 round-trip. Delta is currently priced 39% below the average price you’ll pay for this route.

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

For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $129. Users have also found prices from $131 and $133 on Spirit Airlines and American Airlines, respectively.

In terms of precipitation, rainfall in Boston ranges from 3.1 - 4.0 inches per month. March is typically the wettest month, when rainfall can reach 4.0 in. July is typically the driest time to visit Boston when rainfall is around 3.1 in.

If weather is an important factor for your trip to Boston, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

What are the cheapest flights from Seattle to Boston?

Looking at all options, your cheapest flight can be booked for $137. While the most popular route (Seattle/Tacoma Intl - Boston Logan Intl) can be booked for $217 on average our data indicates $946 when flying from Seattle to Boston.

What are the most reliable airlines from Seattle to Boston?

Before booking your flight to Boston from Seattle, check out the most reliable airlines to get you to your destination on time: EL AL (97%), Scandinavian Airlines (96%), Air France( 95%).

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

The most popular airlines flying from Seattle to Boston are American Airlines, Alaska Airlines and JetBlue. Something to consider prior to booking your flight.

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

Saturday flights are found to be more expensive to fly from Seattle to Boston. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Boston.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 29 days in advance, which can save you up to 45% on flights from Seattle to Boston compared to booking the week you need them. Waiting 29 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 $362. For sooner than that we have options available in the next 3 days from $579.

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

January is one of the best times of the year to fly to Boston from Seattle. Prices for January average $358 per person but you can even find prices for as low as $98. The most expensive prices can be found in the month of August. Opting for a January flight can save you 31% on your journey compared to booking in August

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

Booking a flight from Seattle/Tacoma Intl (SEA) to Boston Logan Intl (BOS) is your only option if you wish to fly from Seattle to Boston. On a typical day, there are 29 flights from Seattle/Tacoma Intl to Logan Intl, all of which are around 5h 12m for a nonstop flight. You can also purchase a plane ticket from 9 airlines when you book a flight from Seattle/Tacoma Intl to Boston.

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

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

How can I find direct flights from Seattle to Boston?

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

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

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

$129+ Flights from Seattle to Boston

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1. Tell us where you want to go

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2. Select your favorite providers

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Boston Logan Intl are usually found in January or March, booked 28 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Seattle to Boston

Round-trip from	$217 (Delta)
One-way from	$129 (Alaska Airlines)
Popular in	August
Cheapest in	January
Average price	$457
Good round-trip deal	$267 or less
Good one-way deal	$189 or less

From Seattle/Tacoma Intl to Boston Logan Intl

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One-way flight from Seattle/Tacoma Intl to Boston Logan Intl

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Highest demand for flights based on searches. 15% potential increase in price ($67 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Boston Logan Intl.

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Price to beat on a one-way flight from Seattle/Tacoma Intl to Boston Logan Intl.

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Find flight deals from Seattle to Boston

Cheapest flights from Seattle to Boston
Explore the most affordable flight options available from Seattle to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

Wed 9/243:38 pmSEA - BOS

Nonstop5h 21mDelta

Tue 9/307:25 amBOS - SEA

Nonstop6h 18mDelta

Deal found 6/30

$217

Sat 9/2011:34 pmSEA - BOS

Nonstop5h 26mAlaska Airlines

Wed 10/17:45 amBOS - SEA

1 stop12h 06mAlaska Airlines

Deal found 6/30

$227

Thu 9/183:59 pmSEA - BOS

Nonstop5h 28mHawaiian Airlines

Mon 9/296:55 pmBOS - SEA

Nonstop6h 13mHawaiian Airlines

Deal found 6/30

$237

Wed 10/1511:30 amSEA - BOS

Nonstop5h 33mJetBlue

Sun 10/197:00 amBOS - SEA

Nonstop6h 19mJetBlue

Deal found 6/30

$238

Thu 9/119:10 pmSEA - BOS

1 stop9h 50mSouthwest

Wed 9/1712:40 pmBOS - SEA

2 stops11h 15mSouthwest

Deal found 7/1

$252

Mon 8/119:45 pmSEA - BOS

1 stop9h 29mAmerican Airlines

Tue 8/197:00 amBOS - SEA

1 stop10h 15mAmerican Airlines

Deal found 6/30

$283

Tue 8/125:59 pmSEA - BOS

1 stop9h 11mMultiple Airlines

Thu 8/2112:57 pmBOS - SEA

2 stops14h 37mMultiple Airlines

Deal found 6/30

$315

Best flights from Seattle to Boston
Discover carefully curated flight deals from Seattle to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 1, 2025.

Wed 9/243:38 pmSEA - BOS

Nonstop5h 21mDelta

Tue 9/307:25 amBOS - SEA

Nonstop6h 18mDelta

Deal found 6/30

$217

Sat 9/2011:34 pmSEA - BOS

Nonstop5h 26mAlaska Airlines

Mon 9/296:55 pmBOS - SEA

Nonstop6h 13mAlaska Airlines

Deal found 6/30

$227

Thu 9/183:59 pmSEA - BOS

Nonstop5h 28mHawaiian Airlines

Mon 9/296:55 pmBOS - SEA

Nonstop6h 13mHawaiian Airlines

Deal found 6/30

$237

Tue 8/129:14 pmSEA - BOS

Nonstop5h 15mJetBlue

Tue 8/197:00 amBOS - SEA

Nonstop6h 20mJetBlue

Deal found 7/1

$247

Thu 9/119:10 pmSEA - BOS

1 stop9h 50mSouthwest

Wed 9/1712:40 pmBOS - SEA

2 stops11h 15mSouthwest

Deal found 7/1

$252

Wed 8/1312:20 amSEA - BOS

1 stop7h 37mUnited Airlines

Tue 8/1912:30 pmBOS - SEA

1 stop9h 19mUnited Airlines

Deal found 6/30

$282

Mon 8/119:45 pmSEA - BOS

1 stop9h 29mAmerican Airlines

Tue 8/197:00 amBOS - SEA

1 stop10h 15mAmerican Airlines

Deal found 6/30

$283

Tue 8/125:59 pmSEA - BOS

1 stop9h 11mMultiple Airlines

Thu 8/2112:57 pmBOS - SEA

2 stops14h 37mMultiple Airlines

Deal found 6/30

$315

Last-minute flights from Seattle to Boston
Discover last-minute flight deals from Seattle to Boston. Data last updated July 1, 2025 and is based on user searches.

Tue 7/83:50 pmSEA - BOS

Nonstop5h 25mDelta

Mon 7/146:50 pmBOS - SEA

Nonstop6h 26mDelta

Deal found 6/30

$437

Wed 7/95:25 amSEA - BOS

1 stop7h 00mHawaiian Airlines

Sun 7/137:20 amBOS - SEA

Nonstop6h 18mHawaiian Airlines

Deal found 6/29

$403

Wed 7/912:20 amSEA - BOS

1 stop7h 37mUnited Airlines

Mon 7/145:30 amBOS - SEA

1 stop9h 20mUnited Airlines

Deal found 6/29

$428

Wed 7/99:46 pmSEA - BOS

1 stop9h 04mAmerican Airlines

Sun 7/135:00 amBOS - SEA

1 stop10h 24mAmerican Airlines

Deal found 6/29

$489

Thu 7/1011:43 amSEA - BOS

Nonstop5h 32mJetBlue

Tue 7/157:15 amBOS - SEA

Nonstop6h 18mJetBlue

Deal found 7/1

$373

Thu 7/1011:40 pmSEA - BOS

Nonstop5h 20mAlaska Airlines

Sun 7/137:20 amBOS - SEA

Nonstop6h 18mAlaska Airlines

Deal found 6/30

$413

Thu 7/101:10 pmSEA - BOS

1 stop8h 30mSouthwest

Sun 7/205:00 amBOS - SEA

1 stop14h 55mSouthwest

Deal found 6/30

$438

Fri 7/115:30 pmSEA - BOS

2 stops21h 51mSpirit Airlines

Wed 7/166:10 amBOS - SEA

3 stops37h 15mSpirit Airlines

Deal found 6/29

$435

Fri 7/115:30 pmSEA - BOS

2 stops21h 51mMultiple Airlines

Thu 7/179:32 amBOS - SEA

2 stops25h 27mMultiple Airlines

Deal found 6/29

$476

Mon 8/119:45 pmSEA - BOS

1 stop9h 29mAmerican Airlines

Tue 8/197:00 amBOS - SEA

1 stop10h 15mAmerican Airlines

Deal found 6/30

$283

Tue 8/129:14 pmSEA - BOS

Nonstop5h 15mJetBlue

Mon 8/256:29 pmBOS - SEA

Nonstop6h 30mJetBlue

Deal found 7/1

$247

Tue 8/126:55 pmSEA - BOS

1 stop9h 35mAlaska Airlines

Tue 8/266:40 pmBOS - SEA

Nonstop6h 10mAlaska Airlines

Deal found 6/29

$257

One-way flights from Seattle to Boston
Search for one-way flight options from Seattle to Boston. Find affordable one-way fares based on user searches. Data last updated July 1, 2025.

Sun 9/711:34 pmSEA - BOS

Nonstop5h 26mAlaska Airlines

Deal found 6/29

$129

Wed 8/65:30 pmSEA - BOS

2 stops12h 07mSpirit Airlines

Deal found 6/30

$131

Wed 7/305:19 amSEA - BOS

1 stop9h 02mAmerican Airlines

Deal found 6/30

$133

Mon 7/2110:17 pmSEA - BOS

Nonstop5h 23mDelta

Deal found 6/30

$139

Thu 7/249:13 pmSEA - BOS

Nonstop5h 12mJetBlue

Deal found 6/30

$154

Mon 9/15:00 amSEA - BOS

1 stop7h 25mSouthwest

Deal found 6/30

$159

Sat 9/65:35 pmSEA - BOS

2 stops12h 49mUnited Airlines

Deal found 6/30

$174

Wed 7/164:42 pmSEA - BOS

1 stop10h 28mHawaiian Airlines

Deal found 6/30

$188

Sat 7/2612:13 pmSEA - BOS

2 stops16h 39mFrontier

Deal found 6/29

$202

Fri 7/2511:59 pmSEA - BOS

3 stops29h 59mMultiple Airlines

Deal found 6/30

$203

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 9/24

3:59 pm-12:27 am

Nonstop5h 28m

Boston Logan Intl

Tue 9/30

6:55 pm-10:08 pm

Nonstop6h 13m

$217

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 9/18

3:59 pm-12:27 am

Nonstop5h 28m

Boston Logan Intl

Mon 9/29

6:55 pm-10:08 pm

Nonstop6h 13m

$237

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 10/15

11:30 am-8:03 pm

Nonstop5h 33m

Boston Logan Intl

Sun 10/19

7:00 am-10:19 am

Nonstop6h 19m

$238

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 9/11

9:10 pm-10:00 am

1 stop9h 50m

Boston Logan Intl

Wed 9/17

12:40 pm-8:55 pm

2 stops11h 15m

$252

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 10/1

7:20 am-11:40 pm

1 stop13h 20m

Boston Logan Intl

Wed 10/15

7:05 am-10:45 am

Nonstop6h 40m

$280

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 8/13

12:20 am-10:57 am

1 stop7h 37m

Boston Logan Intl

Tue 8/19

12:30 pm-6:49 pm

1 stop9h 19m

$282

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Mon 8/11

9:45 pm-10:14 am

1 stop9h 29m

Boston Logan Intl

Tue 8/19

7:00 am-2:15 pm

1 stop10h 15m

$283

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 8/12

5:59 pm-6:10 am

1 stop9h 11m

Boston Logan Intl

Thu 8/21

12:57 pm-12:34 am

2 stops14h 37m

$315

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sun 9/7

11:34 pm-8:00 am

Nonstop5h 26m

$129

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 8/6

5:30 pm-8:37 am

2 stops12h 07m

$131

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Showing 1-10 of 17 results

The best insider tips for Seattle to Boston flights

Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Boston trip

Airports

SEA

Plan to arrive at SEA two hours before your flight. Use SEA Spot Saver for security appointments to reduce wait times.

BOS

Use the MBTA Silver Line for a free ride from BOS to downtown Boston, connecting with local and regional transit.

Our travel experts

Paul Rubio

Expert on BOS

Brandon Schultz

Expert on SEA

Best time to book a flight from Seattle to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Seattle 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 Seattle to Boston

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

Booking 28 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Boston. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, January is the cheapest month in which you can book a flight from Seattle to Boston (average of $218). Flying from Seattle to Boston in June is currently the most expensive (average of $306). 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 SEA to BOS?

Unlike in the morning, when flights are generally more expensive, you can save up to 21% on flights from Seattle to Boston by exploring options for tickets in the afternoon.

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

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

Weekly flight availability from Seattle to Boston

The most flights from SEA to BOS are scheduled on a Tuesday (39 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (16 on average).

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

Reviews of airlines servicing Boston

Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta from Seattle to Boston to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

David,Aug 2024

SFO - BOS

Could not watch a movie, asked for help. Could not get extra cookies

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

David,Aug 2024

SFO - BOS

Could not watch a movie, asked for help. Could not get extra cookies

Southwest

8.0

Very good

4,275 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

David,Aug 2024

SFO - BOS

Could not watch a movie, asked for help. Could not get extra cookies

Delta

8.0

Very good

7,974 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

David,Aug 2024

SFO - BOS

Could not watch a movie, asked for help. Could not get extra cookies

Hawaiian Airlines

7.8

Good

2,538 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

David,Aug 2024

SFO - BOS

Could not watch a movie, asked for help. Could not get extra cookies

United Airlines

7.4

Good

8,858 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

David,Aug 2024

SFO - BOS

Could not watch a movie, asked for help. Could not get extra cookies

Related info for your journey

What airports do I use to fly from Seattle to Boston?
Booking a flight from Seattle/Tacoma Intl (SEA) to Boston Logan Intl (BOS) is your only option if you wish to fly from Seattle to Boston. On a typical day, there are 29 flights from Seattle/Tacoma Intl to Logan Intl, all of which are around 5h 12m for a nonstop flight. You can also purchase a plane ticket from 9 airlines when you book a flight from Seattle/Tacoma Intl to Boston.
How popular is this Seattle to Boston flight route?
Within the past month, 12 users have taken a look at flights from Seattle/Tacoma Intl to Boston Logan Intl.
What are the cheapest airlines flying from Seattle to Boston round-trip?
Our cheapest airline available from Seattle to Boston is Delta. Our recent data shows that you can find tickets from as low as $217 on this airline. Additional options worth looking into are Alaska Airlines and Hawaiian Airlines, starting at $227 and $237 round-trip. Delta is currently priced 39% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Seattle to Boston one-way?
For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $129. Users have also found prices from $131 and $133 on Spirit Airlines and American Airlines, respectively.
What are the most reliable airlines from Seattle to Boston?
Before booking your flight to Boston from Seattle, check out the most reliable airlines to get you to your destination on time: EL AL (97%), Scandinavian Airlines (96%), Air France( 95%).
What are the cheapest flights from Seattle to Boston?
Looking at all options, your cheapest flight can be booked for $137. While the most popular route (Seattle/Tacoma Intl - Boston Logan Intl) can be booked for $217 on average our data indicates $946 when flying from Seattle to Boston.
Can I find deals for flights from Seattle to Boston that include hotel bookings?
Yes. In addition to deals on Seattle to Boston flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Seattle to Boston?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Boston.
Can I find deals for business class flights from Seattle to Boston?
Yes. Cheapflights offers flight deals from Seattle to Boston 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 Seattle to Boston?
Currently, January is the cheapest month in which you can book a flight from Seattle to Boston (average of $218). Flying from Seattle to Boston in June is currently the most expensive (average of $306). 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

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Alternative routes for Seattle to Boston

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North End car rentals

Top 9 airlines flying from Seattle to Boston

Airline	Cheapest	Average	Flexibility	On-time
Hawaiian Airlines	Cheapest$118	Average$383	FlexibilityNo cancel fee	On-time85%
JetBlue	Cheapest$139	Average$337	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$145	Average$252	FlexibilityNo cancel fee	On-time65%
Delta	Cheapest$160	Average$383	FlexibilityNo cancel fee	On-timeN/A
Sun Country Air	Cheapest$198	Average$382	FlexibilityNo cancel fee	On-time83%
American Airlines	Cheapest$216	Average$435	FlexibilityNo cancel fee	On-time71%
Alaska Airlines	Cheapest$232	Average$465	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$236	Average$377	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$326	Average$436	FlexibilityNo cancel fee	On-time63%

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$129+ Cheap flights from Seattle to Boston (SEA - BOS)

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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to Boston with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Boston Logan Intl are usually found in January or March, booked 28 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Seattle to Boston

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Seattle to Boston

Cheapest flights from Seattle to BostonExplore the most affordable flight options available from Seattle to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

Explore the most affordable flight options available from Seattle to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Boston that are best for you.

The best insider tips for Seattle to Boston flights

Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Boston trip

Airports

SEA

BOS

Our travel experts

Best time to book a flight from Seattle to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Seattle with our price prediction graph.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Boston. Price data was last updated on June 27, 2025.

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

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

Find hourly flight availability from Seattle to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 1, 2025.

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

Use this chart to determine the cheapest time to fly round-trip from Seattle to Boston. Price data was last updated on June 29, 2025.

Weekly flight availability from Seattle to Boston

Explore weekly flight availability from Seattle to Boston. 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 July 1, 2025.

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

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. 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 Boston. Reviews last updated July 1, 2025.

Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta from Seattle to Boston to help guide your decision. You can also see how each airline stacks up 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 Seattle to Boston. 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 Seattle to Boston?

How popular is this Seattle to Boston flight route?

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

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

What are the most reliable airlines from Seattle to Boston?

What are the cheapest flights from Seattle to Boston?

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

How can I find direct flights from Seattle to Boston?

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

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

Traveling to a place near Seattle?

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Alternative routes for Seattle to Boston

See prices for flight routes from nearby airports that may be better suited for you.

Top 9 airlines flying from Seattle to Boston

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Cheapest flights from Seattle to Boston
Explore the most affordable flight options available from Seattle to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.