Book Cheap Delta flight from Washington (IAD) to Seattle (SEA) from CA $126

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

Cheapest Delta Flights from Washington (IAD) to Seattle (SEA)

The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were CA $496 round trip and CA $126 one way. Prices and availability subject to change. Additional terms may apply.

Frequently asked questions

Can I catch a flight from Washington Dulles Intl. Airport (IAD) to SEA right now?
For any current Sea-Tac Airport travel advice and quarantine requirements, go to our Covid-19 Travel Advisor. Look before you book your flight, so you don’t get caught up en route.
What terminal is Delta Air Lines at Dulles Intl. Airport?
Check your boarding pass to find out which Dulles Intl. Airport terminal you’ll be taking off from on your way to Sea-Tac Airport with Delta Air Lines. If you can’t find the details on there, get in touch with your airline.
Are there Delta Air Lines non-stop flights from IAD to SEA?
There are. Book a direct flight with Delta Air Lines from IAD to Seattle - Tacoma Intl. Airport (SEA), and you won’t have to worry about stopovers or trying to run for your connecting flight.
How long is a Delta Air Lines flight from IAD to SEA?
Get some in-flight shut-eye and arrive at your destination feeling refreshed. You’ll have plenty of time to do so when traveling with Delta Air Lines between IAD and SEA, with the flight taking about 6 hours and 44 minutes.
What type of aircraft does Delta Air Lines fly from IAD to SEA?
You’ll have the chance to experience all the great amenities that the Boeing 737-800 has to offer when journeying from IAD to SEA with Delta Air Lines. This aircraft is typically used on this leg.
How many direct and indirect flights does Delta Air Lines fly from IAD to SEA?
If you’re traveling from IAD to SEA, you’ll find there are roughly 3 Delta Air Lines daily flights to choose from.
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 IAD 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 Chantilly to Seattle gives you 1 fights to choose from. With that direct flight time of 11, you’ll be touching down before you know it.  

 

Find cheap flights with Delta between Chantilly 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 Chantilly 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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