$179 Cheap Delta flights from Boston to Seattle (BOS to SEA)

Find The Best Day To Fly from Boston to Seattle

Amazing Delta BOS to SEA Flight Deals

The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were $352 round trip and $179 one way. Prices and availability subject to change. Additional terms may apply.

Wed, Sep 11 - Wed, Sep 18
BOS
Boston
SEA
Seattle
$352 Roundtrip, found 3 hours ago
$352
Roundtrip
found 3 hours ago
Select Delta flight, departing Wed, Sep 11 from Boston to Seattle, returning Wed, Sep 18, priced at $352 found 3 hours ago

SEA From BOS Economy Coach Packages on Similar Airlines

Price found within the past 48 hours. Click for updated prices.
Sonesta Simply Suites Seattle Renton

Sonesta Simply Suites Seattle Renton

2.5 out of 5
per person
May 23 - May 27
Roundtrip non-stop flight included
Boston (BOS) to Seattle (SEA)
Larkspur Landing Renton - An All-Suite Hotel

Larkspur Landing Renton - An All-Suite Hotel

3 out of 5
per person
May 23 - May 27
Roundtrip non-stop flight included
Boston (BOS) to Seattle (SEA)
Comfort Inn & Suites Sea-Tac Airport

Comfort Inn & Suites Sea-Tac Airport

3 out of 5
per person
May 23 - May 27
Roundtrip non-stop flight included
Boston (BOS) to Seattle (SEA)
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Frequently asked questions

Can I catch a flight from BOS to Seattle - Tacoma Intl. Airport (SEA) right now?
Ensure you check out our Covid-19 Travel Advisor to find out if there are any current quarantine requirements or travel advice reports in effect in Seattle - Tacoma Intl. Airport (SEA) when flying in from Logan Intl. Airport (BOS).
What terminal is Delta Air Lines at Logan Intl. Airport?
Flights usually take off from terminal An at BOS if you’ve booked a ticket with Delta Air Lines. On your way to SEA? Contact your airline (or do some research online) to find out which terminal you’ll be exiting the plane at.
Are there Delta Air Lines non-stop flights from BOS to SEA?
You bet there are. Save time and effort and fly straight from BOS to Sea-Tac Airport with Delta Air Lines. Avoid complicated transfers, reduce the risk of your bags going missing and reach your destination faster — direct flights are the preferred way to travel for many wise wanderers.
How long is a Delta Air Lines flight from BOS to SEA?
Bring that book you’ve been meaning to read. A flight from BOS to SEA with Delta Air Lines will take on average 7 hours and 31 minutes. You’ll have more than enough time to get swept up in the gripping plot.
What type of aircraft does Delta Air Lines fly from BOS to SEA?
Delta Air Lines typically operates the Airbus A321neo when flying the BOS to SEA route.
How many direct and indirect flights does Delta Air Lines fly from BOS to SEA?
You’ll have loads of choice if you’d prefer to fly with Delta Air Lines from BOS to SEA. At the moment, it operates no fewer than 4 flights per day.
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, please visit our Customer Service Portal.
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.
CarrierFlightDepart BOSArrive SEAThu
5/16		Fri
5/17		Sat
5/18		Sun
5/19		Mon
5/20		Tue
5/21		Wed
5/22		Stops
DL38406:30 am09:47 amCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
DL34011:15 am02:28 pmCheck FareCheck Fare
-
Check FareCheck FareCheck FareCheck Fare
0 Stops
DL34206:55 pm10:12 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops

Discover our best Delta flight from Boston BOS to Seattle SEA 

To find the best deals on flights to Boston from Seattle with Delta, just enter your travel dates, filter by Delta, and hit search. You’ll find 3 flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from Boston BOS to Seattle SEA with Delta 

If you’re planning a round trip, booking return flights with Delta is usually the most cost-effective option. With airfares ranging from $352 to $352, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way Delta flights from Boston BOS to Seattle SEA 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way Delta flight from Boston to Seattle costs from $179. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to Seattle SEA from  Boston BOS with Delta 

To find a cheap Delta flight from Boston BOS to Seattle SEA, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on Delta flights from Boston BOS to Seattle SEA 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as September, or if you book a flight with a stopover. 

 

Find nonstop flights from Boston BOS to Seattle SEA with Delta 

If you’re keen to be on Seattle soil fast, don’t waste time with a stopover—filter your search results to show direct Delta flights only. The journey takes around 6 hour(s) 13 min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for Delta flights from Boston BOS to Seattle SEA 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to Seattle SEA from  Boston BOS with Delta on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

Delta Airports
Hop on a(n) Delta flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
ATLUSAHartsfield-Jackson Atlanta Intl.252
DTWUSADetroit Metropolitan Wayne County156
MSPUSAMinneapolis - St. Paul Intl.131
SLCUSASalt Lake City Intl.116
SEAUSASeattle - Tacoma Intl.57
LAXUSALos Angeles Intl.41
AMSNLDSchiphol31
YYCCANCalgary Intl.26
YYZCANPearson Intl.24
JFKUSAJohn F. Kennedy Intl.23

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