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 JetBlue. Our recent data shows that you can find tickets from as low as $207 on this airline. Additional options worth looking into are Hawaiian Airlines and Alaska Airlines, starting at $213 and $227 round-trip. JetBlue is currently priced 41% 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 Southwest. According to our data, you can fly for as low as $144. Users have also found prices from $149 and $153 on Alaska Airlines and United 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 $118. While the most popular route (Seattle/Tacoma Intl - Boston Logan Intl) can be booked for $193 on average our data indicates $1,543 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: Air France (92%), Scandinavian Airlines (91%), Virgin Atlantic( 85%).

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 53 days in advance, which can save you up to 69% on flights from Seattle to Boston compared to booking the week you need them. Waiting 53 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 $366. 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 $352 per person but you can even find prices for as low as $98. The most expensive prices can be found in the month of December. Opting for a January flight can save you 32% on your journey compared to booking in December

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 35 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.

$144+ Flights from Seattle to Boston

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1. Tell us where you want to go

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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 80 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from Seattle to Boston

Round-trip from	$205 (Kiwi.com)
One-way from	$144 (Southwest)
Popular in	December
Cheapest in	January
Average price	$456
Good round-trip deal	$294 or less
Good one-way deal	$187 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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High demand for flights, 7% potential price rise

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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 August 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 August 2, 2025.

Wed 9/1711:30 amSEA - BOS

Nonstop5h 53mJetBlue

Wed 9/247:00 amBOS - SEA

Nonstop6h 19mJetBlue

Deal found 7/31

$207

Sat 9/203:59 pmSEA - BOS

Nonstop5h 28mHawaiian Airlines

Sat 9/277:20 amBOS - SEA

Nonstop6h 13mHawaiian Airlines

Deal found 8/1

$213

Wed 10/298:25 pmSEA - BOS

1 stop16h 16mAlaska Airlines

Sat 11/16:59 pmBOS - SEA

1 stop19h 24mAlaska Airlines

Deal found 7/30

$236

Tue 9/1610:05 pmSEA - BOS

Nonstop5h 30mDelta

Sun 9/217:25 amBOS - SEA

Nonstop6h 18mDelta

Deal found 7/31

$237

Wed 9/108:25 amSEA - BOS

2 stops11h 05mSouthwest

Mon 9/156:30 pmBOS - SEA

1 stop8h 35mSouthwest

Deal found 8/1

$242

Mon 8/2511:54 pmSEA - BOS

1 stop8h 07mUnited Airlines

Sat 9/62:40 pmBOS - SEA

1 stop9h 02mUnited Airlines

Deal found 8/1

$275

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 August 2, 2025.

Wed 9/1711:30 amSEA - BOS

Nonstop5h 53mJetBlue

Wed 9/247:00 amBOS - SEA

Nonstop6h 19mJetBlue

Deal found 7/31

$207

Sat 9/203:59 pmSEA - BOS

Nonstop5h 28mHawaiian Airlines

Sat 9/277:20 amBOS - SEA

Nonstop6h 13mHawaiian Airlines

Deal found 8/1

$213

Tue 9/163:59 pmSEA - BOS

Nonstop5h 28mAlaska Airlines

Tue 9/307:45 amBOS - SEA

1 stop10h 05mAlaska Airlines

Deal found 7/31

$227

Wed 9/108:25 amSEA - BOS

2 stops11h 05mSouthwest

Mon 9/156:30 pmBOS - SEA

1 stop8h 35mSouthwest

Deal found 8/1

$242

Thu 9/183:38 pmSEA - BOS

Nonstop5h 21mDelta

Sat 9/277:25 amBOS - SEA

Nonstop6h 18mDelta

Deal found 7/31

$262

Mon 8/2511:54 pmSEA - BOS

1 stop8h 07mUnited Airlines

Sat 9/62:40 pmBOS - SEA

1 stop9h 02mUnited Airlines

Deal found 8/1

$275

Last-minute flights from Seattle to Boston
Discover last-minute flight deals from Seattle to Boston. Data last updated August 2, 2025 and is based on user searches.

Thu 8/75:30 pmSEA - BOS

2 stops22h 51mMultiple Airlines

Mon 8/119:32 amBOS - SEA

2 stops16h 18mMultiple Airlines

Deal found 8/1

$550

Fri 8/810:17 pmSEA - BOS

Nonstop5h 23mDelta

Sat 9/66:59 pmBOS - SEA

Nonstop6h 26mDelta

Deal found 8/1

$272

Fri 8/83:43 pmSEA - BOS

Nonstop5h 16mAlaska Airlines

Sat 9/68:23 pmBOS - SEA

1 stop14h 44mAlaska Airlines

Deal found 8/1

$302

Fri 8/89:14 pmSEA - BOS

Nonstop5h 15mJetBlue

Wed 8/136:29 pmBOS - SEA

Nonstop6h 30mJetBlue

Deal found 7/31

$427

Mon 8/117:00 pmSEA - BOS

1 stop8h 01mUnited Airlines

Fri 9/55:05 pmBOS - SEA

1 stop8h 54mUnited Airlines

Deal found 8/1

$312

Mon 8/1111:40 pmSEA - BOS

Nonstop5h 20mHawaiian Airlines

Thu 8/148:40 amBOS - SEA

1 stop12h 51mHawaiian Airlines

Deal found 7/31

$457

Mon 8/115:00 amSEA - BOS

2 stops10h 10mSouthwest

Wed 8/133:15 pmBOS - SEA

1 stop11h 20mSouthwest

Deal found 8/1

$488

Mon 8/2511:54 pmSEA - BOS

1 stop8h 07mUnited Airlines

Wed 9/34:27 pmBOS - SEA

1 stop8h 53mUnited Airlines

Deal found 7/30

$252

Mon 8/2511:10 pmSEA - BOS

1 stop11h 10mSouthwest

Wed 8/2711:25 amBOS - SEA

1 stop13h 15mSouthwest

Deal found 8/1

$278

Mon 8/257:15 amSEA - BOS

1 stop20h 10mAlaska Airlines

Wed 9/36:55 pmBOS - SEA

Nonstop6h 13mAlaska Airlines

Deal found 7/30

$317

Mon 8/255:45 pmSEA - BOS

1 stop9h 40mHawaiian Airlines

Sat 9/66:55 pmBOS - SEA

Nonstop6h 13mHawaiian Airlines

Deal found 8/1

$355

Tue 8/261:32 pmSEA - BOS

1 stop7h 27mAmerican Airlines

Wed 9/33:55 pmBOS - SEA

1 stop9h 34mAmerican Airlines

Deal found 8/1

$227

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 August 2, 2025.

Mon 8/2511:10 pmSEA - BOS

1 stop11h 10mSouthwest

Deal found 8/1

$144

Mon 9/811:34 pmSEA - BOS

Nonstop5h 26mAlaska Airlines

Deal found 8/1

$149

Wed 8/2711:10 pmSEA - BOS

1 stop9h 07mUnited Airlines

Deal found 7/31

$153

Thu 9/253:59 pmSEA - BOS

Nonstop5h 28mHawaiian Airlines

Deal found 7/30

$154

Thu 10/3012:34 amSEA - BOS

1 stop11h 38mAmerican Airlines

Deal found 8/1

$158

Tue 9/26:34 pmSEA - BOS

2 stops25h 00mMultiple Airlines

Deal found 8/1

$168

Fri 10/176:30 pmSEA - BOS

1 stop13h 11mSun Country Air

Deal found 7/31

$173

Fri 10/1011:40 pmSEA - BOS

1 stop9h 05mJetBlue

Deal found 8/1

$192

Fly from

Fly to

Route

Depart

Return

Price

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 9/17

11:30 am-8:23 pm

Nonstop5h 53m

Boston Logan Intl

Wed 9/24

7:00 am-10:19 am

Nonstop6h 19m

$207

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sat 9/20

3:59 pm-12:27 am

Nonstop5h 28m

Boston Logan Intl

Sat 9/27

7:20 am-10:33 am

Nonstop6h 13m

$213

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Tue 9/16

3:59 pm-12:27 am

Nonstop5h 28m

Boston Logan Intl

Tue 9/30

7:45 am-2:50 pm

1 stop10h 05m

$227

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 9/10

8:25 am-10:30 pm

2 stops11h 05m

Boston Logan Intl

Mon 9/15

6:30 pm-12:05 am

1 stop8h 35m

$242

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 9/18

3:38 pm-11:59 pm

Nonstop5h 21m

Boston Logan Intl

Sat 9/27

7:25 am-10:43 am

Nonstop6h 18m

$262

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Mon 8/25

11:54 pm-11:01 am

1 stop8h 07m

Boston Logan Intl

Sat 9/6

2:40 pm-8:42 pm

1 stop9h 02m

$275

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Mon 8/25

11:10 pm-1:20 pm

1 stop11h 10m

$144

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Mon 9/8

11:34 pm-8:00 am

Nonstop5h 26m

$149

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 8/27

11:10 pm-11:17 am

1 stop9h 07m

$153

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 9/25

3:59 pm-12:27 am

Nonstop5h 28m

$154

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/1

Showing 1-10 of 14 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 80 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 July is currently the most expensive (average of $311). 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 20% 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 Friday (39 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (33 on average).

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

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Southwest

8.0

Very good

4,246 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Delta

8.0

Very good

7,983 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Hawaiian Airlines

7.8

Good

2,613 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

United Airlines

7.4

Good

8,904 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 35 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 JetBlue. Our recent data shows that you can find tickets from as low as $207 on this airline. Additional options worth looking into are Hawaiian Airlines and Alaska Airlines, starting at $213 and $227 round-trip. JetBlue is currently priced 41% 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 Southwest. According to our data, you can fly for as low as $144. Users have also found prices from $149 and $153 on Alaska Airlines and United 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: Air France (92%), Scandinavian Airlines (91%), Virgin Atlantic( 85%).
What are the cheapest flights from Seattle to Boston?
Looking at all options, your cheapest flight can be booked for $118. While the most popular route (Seattle/Tacoma Intl - Boston Logan Intl) can be booked for $193 on average our data indicates $1,543 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 July is currently the most expensive (average of $311). 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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Top 9 airlines flying from Seattle to Boston

Airline	Cheapest	Average	Flexibility	On-time
Hawaiian Airlines	Cheapest$124	Average$362	FlexibilityNo cancel fee	On-time85%
JetBlue	Cheapest$136	Average$332	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$138	Average$260	FlexibilityNo cancel fee	On-time65%
Delta	Cheapest$155	Average$378	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$216	Average$406	FlexibilityNo cancel fee	On-time71%
Sun Country Air	Cheapest$223	Average$382	FlexibilityNo cancel fee	On-time83%
Alaska Airlines	Cheapest$229	Average$455	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$271	Average$377	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$281	Average$356	FlexibilityNo cancel fee	On-time63%

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$144+ 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 8/25. 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 80 days in advance, depart on a Wednesday or Tuesday 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 August 2, 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 August 2, 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 July 25, 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 August 2, 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 July 27, 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 August 2, 2025.

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.

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 Boston?

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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 August 2, 2025.