Cheap flights from Seattle to Logan Intl

Round-trip
Economy
Seattle (SEA)
Boston (BOS)
Depart
Return
Any month
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The best prices from Seattle to Logan Intl are usually found in January or February, booked 60 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

How to find the cheapest flight from
Seattle (SEA) to Logan Intl (BOS)

All the information you need to plan the best SEA to BOS flight in 2021: compare Seattle to Logan Intl flight prices with the expected peak season, weather and rainfall in Logan Intl.
SEA - BOS
Price
C$ 251 - C$ 544
BOS
Temperature
4 - 29 °C
BOS
Rainfall
70 - 99 mm

Popular in

December

High demand for flights, 35% potential price rise

Cheapest in

January

Best time to find cheap flights, 29% potential price drop

Round-trip from

C$ 251

From Seattle to Logan Intl

One-way from

C$ 214

One-way flight from Seattle to Logan Intl

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Seattle to Logan Intl?

Thursday flights are generally found to be more expensive for flights from Seattle to Logan Intl. 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 Logan Intl.

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

Users have found that booking a flight from Seattle to Logan Intl at least 33 days early can save you up to 92% on average compared to booking a flight this week. If booking 33 days before your flight isn’t an option for you, users have found flights from Seattle to Logan Intl for as little as C$ 425 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as C$ 590 for flights departing within the next 3 days.

What is the cheapest month to fly from Seattle to Logan Intl?

March is one of the best times of the year to fly to Logan Intl from Seattle. Prices for March average C$ 317 per person but you can even find prices for as low as C$ 247. The most expensive prices can be found in the month of December. Opting for a March flight can save you 6% on your journey compared to booking in March

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

One of the essential ways to save on airfare from Seattle to Logan Intl is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at noon could potentially save you up to 43% on airfare.

Cheap flights from Seattle to Logan Intl in June, July 2021

The best prices found for SEA to BOS flights for June, July
22 Jun - 4 Jul
C$ 418pp
SEA
Seattle/Tacoma Intl
JetBlue
Direct
BOS
Boston Logan Intl
BOS
Boston Logan Intl
JetBlue
Direct
SEA
Seattle/Tacoma Intl
27 Jul - 26 Aug
C$ 440pp
SEA
Seattle/Tacoma Intl
Delta
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Delta
 
1 STOP
SEA
Seattle/Tacoma Intl
26 Jul - 18 Aug
C$ 442pp
SEA
Seattle/Tacoma Intl
Delta
Direct
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Delta
Direct
SEA
Seattle/Tacoma Intl

Seattle to Logan Intl 2021 flight deals

Cheap flights to Logan Intl from Seattle found for this year
27 Oct - 30 Oct
C$ 361pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl
25 Sep - 29 Sep
C$ 380pp
SEA
Seattle/Tacoma Intl
United Airlines
   
2 STOPS
BOS
Boston Logan Intl
BOS
Boston Logan Intl
United Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
21 Oct - 24 Oct
C$ 383pp
SEA
Seattle/Tacoma Intl
United Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
United Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

Direct flights to Logan Intl from Seattle

Save time with Seattle to Logan Intl direct flight deals
27 Oct - 30 Oct
C$ 361pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl
14 Sep - 21 Sep
C$ 385pp
SEA
Seattle/Tacoma Intl
JetBlue
Direct
BOS
Boston Logan Intl
BOS
Boston Logan Intl
JetBlue
Direct
SEA
Seattle/Tacoma Intl
21 Oct - 24 Oct
C$ 409pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl

Last minute flights from Seattle to Logan Intl

Late deals on round-trip flights to Logan Intl from Seattle, departing today and this week
22 Jun - 4 Jul
C$ 418pp
SEA
Seattle/Tacoma Intl
JetBlue
Direct
BOS
Boston Logan Intl
BOS
Boston Logan Intl
JetBlue
Direct
SEA
Seattle/Tacoma Intl
22 Jun - 3 Jul
C$ 474pp
SEA
Seattle/Tacoma Intl
JetBlue
Direct
BOS
Boston Logan Intl
BOS
Boston Logan Intl
JetBlue
Direct
SEA
Seattle/Tacoma Intl
22 Jun - 25 Jun
C$ 503pp
SEA
Seattle/Tacoma Intl
JetBlue
Direct
BOS
Boston Logan Intl
BOS
Boston Logan Intl
JetBlue
Direct
SEA
Seattle/Tacoma Intl

One-way flights to Logan Intl from Seattle

The cheapest one-way flights from Seattle to Logan Intl
2:10 p.m. - 5:05 a.m.
Spirit Airlines
2 stops
11h 55m
SEA - BOS
Spirit Airlines
C$ 214
Spirit
5:56 p.m. - 2:15 a.m.
Alaska Airlines
Direct
5h 19m
SEA - BOS
Alaska Airlines
C$ 242
6:59 p.m. - 5:37 a.m.
Sun Country Air
1 stop
7h 38m
SEA - BOS
Sun Country Air
C$ 264

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Seattle</span> to <span class="emphasized">Logan Intl</span> flights.

Flight FAQs

From Seattle to Logan Intl

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 14 flights from Seattle/Tacoma Intl to Logan Intl, all of which are around 5h 18m for a nonstop flight. You can also purchase a plane ticket from 4 airlines when you book a flight from Seattle/Tacoma Intl to Boston.

What safety measures are being taken by airlines flying from Seattle/Tacoma Intl to Boston Logan Intl to control the spread of COVID-19?

New policies can now be found on Alaska Airlines to help keep travellers safe while flying. Airline carriers are regularly disinfecting and sanitizing their aircraft. Masks are provided and are mandatory while on board. Pre-flight testing for symptoms and antibodies, alongside socially-distanced seating (for a limited time) will work towards keeping travellers safer while flying from Seattle/Tacoma Intl to Boston Logan Intl. Policies will vary by airline.

Which airlines flying from Seattle/Tacoma Intl to Boston Logan Intl have flexible cancellations due to COVID-19?

Some of the carriers operating flights from Seattle/Tacoma Intl to Boston Logan Intl that may be offering flexible cancellation policies are JetBlue, Alaska Airlines, and Delta. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from Seattle to Logan Intl for under C$ 364 on Cheapflights?

Yes, there are multiple flights from Seattle to Logan Intl for under C$ 364. The cheapest flight booked recently is on Alaska Airlines for just C$ 361, but on average you can expect to pay C$ 406.

Are there direct flights from Seattle to Logan Intl for under C$ 364 on Cheapflights?

Cheapflights has 20 direct flights from Seattle to Logan Intl under C$ 364. A good price for a direct flight from Seattle to Logan Intl is less than C$ 451.

Are there last-minute flights available from Seattle to Logan Intl for under C$ 486?

There are currently 20+ open flights from Seattle to Logan Intl within the next 7 days for less than C$ 486.

What days are direct flights available from Seattle to Boston?

Days when direct flights are available for this flight are: Tuesday, Wednesday, Saturday.

How popular is this flight route?

Within the past month, 28 users have taken a look at flights from Seattle/Tacoma Intl to Boston Logan Intl.

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

On average 3 flights depart from Seattle/Tacoma Intl to Boston Logan Intl per day.
Afternoon (Noon - 6pm) - 67% of flight departures
Evening (6pm - Midnight) - 33% of flight departures

Does it rain more in Seattle or Boston?

When travelling, it's generally smart to pack in preparation for rain or any other conditions that may arise. The rainfall in Seattle is roughly less than Boston. You can assume this to be the case over the next 15 days.

Is Seattle weather warmer or cooler than Boston?

Temperatures around the 29 °C's can be experienced in July. The weather in Boston is hotter than in Seattle. Plan for potential changes in flight availability as peak weather approaches in this location.

How long is the flight from Seattle to Logan Intl?

A quick flight from Seattle to Logan Intl can take about 5h 12m. JetBlue provides one of the quickest options available for as low as C$ 446. The distance from Seattle to Logan Intl is about 4027 km. Most flights are nonstop.

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

Alaska Airlines, at C$ 361, was found to be the cheapest airline from Seattle to Logan Intl.Alternate airlines to your destination round-trip include United Airlines and Delta.

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

To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at C$ 128. Alaska Airlines flights start at C$ 182 while deals on United Airlines start at C$ 192 one-way.

Related searches

Flights to Logan Intl from Seattle
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Rent a Car

Car Rentals at Logan Intl Car Rentals in USA

Destination information for Logan Intl

Things to know before you go - useful duration and weather info for your trip from Seattle to Logan Intl.
Flight duration
5h 49m
Average temperature for June in Logan Intl
26.0 °C
Avg rainfall for June in Logan Intl
79.0 mm

Airports servicing Seattle

Airports servicing Boston

Top 4 airlines flying from Seattle to Logan Intl

The chart below displays the airlines Cheapflights users travelling from Seattle to Logan Intl choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Delta
C$ 118 C$ 226 No cancel fee N/A
Search Delta flights
American Airlines
C$ 117 C$ 240 No cancel fee 71%
Search American Airlines flights
Alaska Airlines
C$ 118 C$ 288 No cancel fee 75%
Search Alaska Airlines flights
JetBlue
C$ 156 C$ 391 No cancel fee 62%
Search JetBlue flights

Hourly flight availability from Seattle to Logan Intl

See what time of day planes typically take off from Seattle towards Logan Intl.
Evening 6 PM to midnight 50% of flight departures
Afternoon Noon to 6 PM 37% of flight departures
Morning 6 AM to noon 11% of flight departures
Early morning Midnight to 6 AM 2% of flight departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Seattle to Logan Intl
See how many times per day planes take to the skies headed from Seattle to Logan Intl.
Sunday
14 daily flights
Monday
16 daily flights
Tuesday
21 daily flights
Wednesday
11 daily flights
Thursday
14 daily flights
Friday
14 daily flights
Saturday
11 daily flights
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