Book Cheap Delta flight from Boston (BOS) to Seattle (SEA) from CA $142

Find The Best Day to Book a Cheap Delta Flights From Boston to Seattle

Cheapest Delta Flights from Boston (BOS) to Seattle (SEA)

The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were CA $284 round trip and CA $142 one way. Prices and availability subject to change. Additional terms may apply.

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.

Grab a great Delta flight from BOS to SEA 

To find a great deal on Delta flights with Travelocity, simply enter your origin and destination airports, pick your travel dates, and hit search. From here, you can sort by price, flight duration, and arrival/departure time. You can also filter to find nonstop flights. 

Flying Delta Boston to Seattle gives you 2 fights to choose from. With that direct flight time of 35, you’ll be touching down before you know it.  

 

Find cheap flights with Delta between Boston and Seattle 

Delta has a range of great fares on stacks of flights, and to find the most affordable for you, there are a few tricks you can try. Booking in advance, for example, is a great way to grab a fantastic deal. Also, choose the cheapest month, if you can. One-way flights from Boston to Seattle with Delta are January.  

The more flexible you are, the more affordable flights you’re likely to find. Consider one-way flights and connecting flights, as well as standard roundtrip and direct options. Even if you’re flying today, cheap last-minute flights are easy to find by entering your travel dates and hitting search.  

 

Reasons to book your Delta flights with Travelocity 

Travelocity makes it easy to book a seat, anywhere in the world. The vast inventory, fast search, and advanced filters put some of the best deals on the planet in one place. Whether you’re traveling on business, with friends, family, or on your own, take your pick from some fantastic options. And with free cancellation and pay later options, you can travel more and worry less.  

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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