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Cheap flights from Seattle to Boston from C$ 138

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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOS
26 Nov — 3 Dec1
1 adult

The best prices from Seattle/Tacoma Intl to Boston Logan Intl are usually found in January or February, booked 38 days in advance, depart on a Sunday or Monday and return on a Wednesday

Find flights from Seattle to Boston within your budget

Customize your flight search to find flights from Seattle to Boston 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 640,016 searches. Data last updated 21 November 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 5/12

11:05 a.m.-7:15 p.m.

Nonstop5h 10m

Boston Logan Intl

Wed 11/12

6:29 a.m.-9:50 a.m.

Nonstop6h 21m

C$ 274

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 30/1

3:45 p.m.-11:59 p.m.

Nonstop5h 14m

Boston Logan Intl

Fri 31/1

4:30 p.m.-9:30 a.m.

1 stop20h 00m

C$ 288

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sun 5/1

11:35 p.m.-8:02 a.m.

Nonstop5h 27m

Boston Logan Intl

Sun 12/1

6:59 p.m.-10:23 p.m.

Nonstop6h 24m

C$ 331

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 23/1

6:00 p.m.-5:56 a.m.

1 stop8h 56m

Boston Logan Intl

Sun 26/1

5:45 a.m.-1:22 p.m.

2 stops10h 37m

C$ 364

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 12/12

6:39 p.m.-10:41 a.m.

1 stop13h 02m

Boston Logan Intl

Mon 16/12

11:46 a.m.-5:02 p.m.

1 stop8h 16m

C$ 426

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 8/1

10:00 a.m.-10:30 p.m.

2 stops9h 30m

Boston Logan Intl

Tue 14/1

2:05 p.m.-10:40 p.m.

1 stop11h 35m

C$ 462

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Wed 11/12

12:15 a.m.-11:27 a.m.

1 stop8h 12m

Boston Logan Intl

Mon 16/12

6:30 a.m.-12:43 p.m.

1 stop9h 13m

C$ 492

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Sun 8/12

11:28 p.m.-8:00 a.m.

Nonstop5h 32m

C$ 138

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Mon 9/12

9:59 p.m.-6:54 p.m.

1 stop17h 55m

C$ 159

SeattleBoston

SEA - BOS

SEABOS

Seattle/Tacoma Intl

Thu 5/12

11:55 p.m.-10:49 a.m.

1 stop7h 54m

C$ 165

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/11

Showing 1-10 of 15 results
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Cheap flight deals from Seattle to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Boston (BOS). 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 21 November 2024.

Round-trip from

C$ 274

One-way from

C$ 138

Popular in

July

Cheapest in

January
JetBlue
  • JetBlue
  • 5/12-11/12
  • Nonstop
  • 11h 31m total
  • Seattle to Boston
Search Deals
Delta
  • Delta
  • 8/12
  • Nonstop
  • 5h 32m total
  • Seattle to Boston
Search Deals
High demand for flights, 30% potential price rise
Search Deals
Best time to find cheap flights, 37% potential price drop
Search Deals

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 21 November 2024.

Thu 5/1211:05 a.m.SEA - BOS
Nonstop5h 10mJetBlue
Wed 11/126:29 a.m.BOS - SEA
Nonstop6h 21mJetBlue
Deal found 20/11C$ 274
Fri 6/123:40 p.m.SEA - BOS
Nonstop5h 19mAlaska Airlines
Mon 9/127:59 p.m.BOS - SEA
1 stop13h 04mAlaska Airlines
Deal found 21/11C$ 288
Sat 14/127:35 a.m.SEA - BOS
Nonstop5h 30mDelta
Mon 6/16:59 p.m.BOS - SEA
Nonstop6h 24mDelta
Deal found 21/11C$ 331
Tue 10/124:23 p.m.SEA - BOS
1 stop9h 40mUnited Airlines
Sat 14/124:23 p.m.BOS - SEA
1 stop9h 23mUnited Airlines
Deal found 21/11C$ 374
Thu 12/126:39 p.m.SEA - BOS
1 stop13h 02mSun Country Air
Mon 16/1211:46 a.m.BOS - SEA
1 stop8h 16mSun Country Air
Deal found 21/11C$ 426
Wed 11/1212:15 a.m.SEA - BOS
1 stop8h 12mAmerican Airlines
Mon 16/126:30 a.m.BOS - SEA
1 stop9h 13mAmerican Airlines
Deal found 21/11C$ 492
Thu 5/128:25 a.m.SEA - BOS
1 stop12h 15mSouthwest
Sun 8/122:40 p.m.BOS - SEA
2 stops12h 45mSouthwest
Deal found 21/11C$ 504

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.

Travel insights for flights from Seattle to Boston

Get recent, data-driven insights about flights from Seattle to Boston including ideal travel times, pricing trends, and more.

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 15 November 2024.

Booking 38 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, December is the cheapest month in which you can book a flight from Seattle to Boston (average of C$ 287). Flying from Seattle to Boston in July is currently the most expensive (average of C$ 330). 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?

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 21 November 2024.

A simple way to save on the total cost of your ticket is to fly from Seattle to Boston in the morning. If you’re flexible enough to do this you can expect to save up to 34% on your trip compared to booking a flight in the afternoon.

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 21 November 2024.

The most flights from SEA to BOS are scheduled on a Thursday (33 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (12 on average).

Rainfall in Boston by month

Plan your trip to Boston by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Boston ranges from 78.0 - 101.0 mm per month. March is typically the wettest month, when rainfall can reach 101.0 mm. July is typically the driest time to visit Boston when rainfall is around 78.0 mm.

Temperature in Boston by month

Plan your trip to Boston by taking into account the average temperature totals by month.

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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).

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 21 November 2024.
To help decide which airline to fly from Seattle to Boston, see what other customers have to say about Alaska Airlines, Delta and Sun Country Air. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,005 reviews
Check prices

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,005 reviews
Southwest
8.1
Very good
5,005 reviews
Check prices

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Alaska Airlines
8.0
Very good
9,464 reviews
Southwest
8.1
Very good
5,005 reviews
Check prices

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,755 reviews
Southwest
8.1
Very good
5,005 reviews
Check prices

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

JetBlue
7.5
Good
3,389 reviews
Southwest
8.1
Very good
5,005 reviews
Check prices

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Turkish Airlines
7.4
Good
3,920 reviews
Southwest
8.1
Very good
5,005 reviews
Check prices

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

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?

    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 16 flights from Seattle/Tacoma Intl to Logan Intl, all of which are around 5h 25m for a nonstop flight. You can also purchase a plane ticket from 3 airlines when you book a flight from Seattle/Tacoma Intl to Boston.

  • How popular is this Seattle to Boston flight route?

    The Seattle/Tacoma Intl to Boston Logan Intl flight path was viewed by 63 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    JetBlue, at C$ 274, was found to be the cheapest airline from Seattle to Boston.Alternate airlines to your destination round-trip include Alaska Airlines and Delta. You may be able to fly from Seattle to Boston for 47% less than the average price by searching for these airlines.

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

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as C$ 138. However, be on the lookout for offers from Alaska Airlines and United Airlines, as they are both options that can get you from Seattle to Boston for a low price.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Seattle to Boston on time: LATAM Airlines (100%), Scandinavian Airlines (100%), TAP AIR PORTUGAL (100%).

  • What are the cheapest flights from Seattle to Boston?

    While on average a flight from Seattle to Boston is generally C$ 574, our data shows the cheapest flight currently is C$ 169. When looking at the most popular route, (Seattle/Tacoma Intl - Boston Logan Intl), you can expect to pay C$ 274 for that flight.

  • 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, December is the cheapest month in which you can book a flight from Seattle to Boston (average of C$ 287). Flying from Seattle to Boston in July is currently the most expensive (average of C$ 330). 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 3 airlines flying from Seattle to Boston

Discover the top 3 airlines that operate flights from Seattle to Boston. 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 640,016 searches. Data last updated 21 November 2024.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapestC$ 169AverageC$ 494FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
JetBlueCheapestC$ 172AverageC$ 400FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
DeltaCheapestC$ 180AverageC$ 366FlexibilityNo cancel feeOn-timeN/A
Search Delta flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights helps you search for flights from Seattle to Boston via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Seattle to Boston.

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

Yes! Cheapflights helps users easily find flights from Seattle to Boston with no change fees.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Boston from Seattle today and book when prices fit your budget.

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