$125 Cheap flights from Logan Intl. to Seattle - Tacoma Intl. (BOS to SEA)

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Find The Best Dates To Fly from Logan Intl. to Seattle - Tacoma Intl.

Amazing BOS to SEA Flight Deals

The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were $237 round trip and $125 one way. Prices and availability subject to change. Additional terms may apply.

Wed, May 8 - Mon, May 13
BOS
Boston
SEA
Seattle
$237 Roundtrip, found 2 hours ago
$237
Roundtrip
found 2 hours ago
Select Spirit Airlines flight, departing Wed, May 8 from Boston to Seattle, returning Mon, May 13, priced at $237 found 2 hours ago
Fri, May 3 - Tue, May 7
BOS
Boston
SEA
Seattle
$241 Roundtrip, just found
$241
Roundtrip
just found
Select Alaska Airlines flight, departing Fri, May 3 from Boston to Seattle, returning Tue, May 7, priced at $241 just found
Fri, May 3 - Tue, May 7
BOS
Boston
SEA
Seattle
$244 Roundtrip, just found
$244
Roundtrip
just found
Select JetBlue Airways flight, departing Fri, May 3 from Boston to Seattle, returning Tue, May 7, priced at $244 just found
Mon, May 6 - Wed, May 8
BOS
Boston
SEA
Seattle
$245 Roundtrip, found 6 hours ago
$245
Roundtrip
found 6 hours ago
Select Spirit Airlines flight, departing Mon, May 6 from Boston to Seattle, returning Wed, May 8, priced at $245 found 6 hours ago
Tue, May 7 - Mon, May 13
BOS
Boston
SEA
Seattle
$250 Roundtrip, just found
$250
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, May 7 from Boston to Seattle, returning Mon, May 13, priced at $250 just found
Wed, Oct 2 - Tue, Oct 8
BOS
Boston
SEA
Seattle
$251 Roundtrip, found 1 day ago
$251
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Oct 2 from Boston to Seattle, returning Tue, Oct 8, priced at $251 found 1 day ago
Mon, Apr 29 - Mon, Apr 29
BOS
Boston
SEA
Seattle
$251 Roundtrip, found 4 days ago
$251
Roundtrip
found 4 days ago
Select JetBlue Airways flight, departing Mon, Apr 29 from Boston to Seattle, returning Mon, Apr 29, priced at $251 found 4 days ago
Tue, May 7 - Tue, May 14
BOS
Boston
SEA
Seattle
$252 Roundtrip, found 3 hours ago
$252
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Tue, May 7 from Boston to Seattle, returning Tue, May 14, priced at $252 found 3 hours ago
Tue, May 7 - Mon, May 13
BOS
Boston
SEA
Seattle
$253 Roundtrip, just found
$253
Roundtrip
just found
Select JetBlue Airways flight, departing Tue, May 7 from Boston to Seattle, returning Mon, May 13, priced at $253 just found
Sat, Oct 5 - Wed, Oct 16
BOS
Boston
SEA
Seattle
$256 Roundtrip, found 6 hours ago
$256
Roundtrip
found 6 hours ago
Select Spirit Airlines flight, departing Sat, Oct 5 from Boston to Seattle, returning Wed, Oct 16, priced at $256 found 6 hours ago

Flight Schedule for BOS to SEA

CarrierFlightDepart BOSArrive SEASat
4/20		Sun
4/21		Mon
4/22		Tue
4/23		Wed
4/24		Thu
4/25		Fri
4/26		Stops
DL38406:30 am09:50 amCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
AS45907:00 am10:15 amCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
AS53711:00 am02:14 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
B619705:24 pm08:35 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
AS36405:27 pm08:41 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
DL112307:10 pm10:25 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
AS31707:59 pm11:13 pmCheck FareCheck FareCheck Fare
-
-
Check FareCheck Fare
0 Stops
DL34011:00 am02:17 pm
-
Check FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
HU73006:40 pm09:30 pm
-
Check Fare
-
-
Check Fare
-
Check Fare
0 Stops

Frequently asked questions

Can I catch a flight from Logan Intl. Airport (BOS) to Seattle - Tacoma Intl. Airport (SEA) right now?
Be sure to visit the Covid-19 Travel Advisor to discover if there are any current quarantine requirements or travel advice reports in place in Sea-Tac Airport when jet-setting from Logan Intl. Airport.
Are there direct flights from Logan Intl. Airport (BOS) to SEA?
Multiple airlines offer flights straight from Logan Intl. Airport to SEA. Among these are Delta and Alaska Airlines — check them out if you want to arrive at your destination as quickly as possible.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Sea-Tac Airport, please visit our Customer Service Portal.
How long is the flight from Logan Intl. Airport (BOS) to SEA?
The journey between BOS and SEA is usually about 6 hours and 20 minutes. Make your journey more enjoyable by downloading a few shows on your phone or laptop and enjoying them with your seat fully reclined.
What is the flight distance from Logan Intl. Airport to Seattle - Tacoma Intl. Airport (SEA)?
The distance from Logan Intl. Airport (BOS) to SEA is 2,500 mi. Apart from filling your phone with more shows, it’ll be wise to bring along some noise-canceling earphones and a pullover as well.
What airlines fly from Logan Intl. Airport (BOS) to Seattle - Tacoma Intl. Airport (SEA)?
There are several airlines with direct flights from BOS to Sea-Tac Airport. Delta (DL) is one of the most well-known, operating approximately 86 flights each month. Another attractive option is Alaska Airlines (AS), which has 82 flights each month. The more airlines you take into account, the more likely you are to snap up a fantastic deal.
What airlines have practices regarding COVID-19 in place and use social distancing?
From the moment you enter the departure terminal to when you leave the arrivals terminal, if you’re flying with Alaska Airlines, Delta or Southwest Airlines you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

 

Traveling From
Logan Intl.
Traveling To
Seattle - Tacoma Intl.
Shortest Flight Time
5 hours 50 mins
Earliest Departure Time
6:30AM EDT
Latest Departure Time
7:59PM EDT
Lowest Flight Price
$237

Route Info

Flight path for flights from Logan International Airport to Seattle-Tacoma International Airport


Origin:
BOS - Logan International Airport
Destination:
SEA - Seattle-Tacoma International Airport
Distance:
2,502.00 miles


Airlines & Aircraft Used on BOS to SEA Flight Routes


Airline Carrier
Aircraft
American Airlines
Airbus A319
American Airlines
Airbus A320-100/200
Delta Air Lines
Aerospatiale/Alenia ATR 42/ ATR 72
Jet Airways (India)
Airbus A320-100/200
JetBlue Airways
Boeing 737-800 pax
United Airlines
Airbus A319
United Airlines
Airbus A320-100/200

Discover our best flights from Boston BOS to Seattle SEA. 

With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 

 

Find our best return flights from Boston BOS to Seattle SEA at the right price  

Airfares to Seattle SEA from Boston BOS currently cost between $237 and $256. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way flights from Boston BOS to Seattle SEA 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Boston BOS to Seattle SEA on Travelocity starting at $125. Prices and availability subject to change. Additional terms may apply. 

 

Get to Seattle SEA from Boston BOS quicker with direct flights. 

Get to Seattle faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to SEA from BOS to take around 5 hour(s) 50 min(s).  

 

Find our cheapest airfares for flights from Boston BOS to Seattle SEA

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to SEA from BOS. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  

 

Get our best airfare deals for your flight from Boston BOS to Seattle SEA today 

If you’re flexible about when you travel, May is usually the cheapest month to fly from Boston BOS to Seattle SEA. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 

 

Book flexible airline tickets for flights to Seattle SEA from Boston BOS 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to SEA from BOS have this option.  

 

Travel with confidence when you book flights to Seattle SEA from Boston BOS with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.