Cheap flights from Dulles Intl (IAD) to Seattle (SEA) from $127
This is the cheapest one-way flight price, found on 12/6. Prices may vary by date and flight preferences.
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How to find the cheapest flight from Dulles Intl (IAD) to Seattle (SEA)
Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 7, 2023.
Popular in | June |
|---|---|
Cheapest in | February |
Round-trip from | $238 |
One-way from | $207 |
How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Seattle?
Users have found that booking a flight from Washington, D.C. Dulles Intl Airport to Seattle at least 27 days early can save you up to 72% on average compared to booking a flight this week. If booking 27 days before your flight isn’t an option for you, users have found flights from Washington, D.C. Dulles Intl Airport to Seattle for as little as $462 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 $638 for flights departing within the next 3 days.
What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Seattle?
January is one of the best times of the year to fly to Seattle from Washington, D.C. Dulles Intl Airport. Prices for January average $404 per person but you can even find prices for as low as $109. The most expensive prices can be found in the month of June. Opting for a January flight can save you 45% on your journey compared to booking in June
When is the cheapest time to fly from Washington, D.C. Dulles Intl Airport to Seattle (IAD - SEA)?
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Dulles Intl Airport to Seattle as you normally would.
Cheap American Airlines flights from Dulles Intl to Seattle
Explore cheap flight options specifically provided by American Airlines for the route between Dulles Intl and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated December 7, 2023.
Check out some of the cheapest American Airlines flights we've come across from Washington, D.C. to Seattle. Come back soon if you're not finding the exact deal you're looking for.
If you’re traveling from Washington, D.C. Dulles Intl Airport to Seattle, one of the more common airlines traveling that route is American Airlines. Flights from American Airlines traveling this route typically cost $378.58 RT. This price is typically 67% more expensive than other airlines that offer Washington, D.C. Dulles Intl Airport to Seattle flights. When booking this route, the cheapest RT price found was $169. The most popular departure airport in Washington, D.C. Dulles Intl Airport when flying to Seattle is Washington, D.C. Dulles Intl Airport. The most popular airport to fly into when visiting Seattle is Seattle/Tacoma Intl Airport. When flying from Washington, D.C. Dulles Intl Airport to Seattle, American Airlines flights are 13% more popular than any other airline flying that same route.
Cheap Alaska Airlines flights from Dulles Intl to Seattle
Explore cheap flight options specifically provided by Alaska Airlines for the route between Dulles Intl and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated December 7, 2023.
Browse through some of the cheapest Alaska Airlines flights traveling from Washington, D.C. to Seattle. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
Alaska Airlines is one of the most popular airlines used for those traveling from Washington, D.C. Dulles Intl Airport to Seattle. Flights on this route from Alaska Airlines typically cost $417.81 RT, a price that is 69% cheaper than the average Washington, D.C. Dulles Intl Airport to Seattle flight. The cheapest flight found was $168 RT. Washington, D.C. Dulles Intl Airport is the most common Washington, D.C. Dulles Intl Airport airport to take off from when flying to Seattle. Seattle/Tacoma Intl Airport is the most popular arrival airport in Seattle. When flying from Washington, D.C. Dulles Intl Airport to Seattle, Alaska Airlines flights are 10% more popular than any other airline flying that same route.
Cheap Dulles Intl to Seattle flights in December & January 2023
Find cheap flight options from Dulles Intl to Seattle specifically for the months of December and January 2023. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,618,515 searches. Prices were last updated on December 7, 2023.
The lowest fares we've come across on flights traveling from Washington, D.C. to Seattle in December and January 2023. For more flight deals, be sure to check back very soon.
Dulles Intl to Seattle 2023 flight deals
Discover exclusive flight deals for travel between Dulles Intl and Seattle in 2023. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated December 7, 2023.
The lowest fares we've come across on flights traveling from Washington, D.C. to Seattle in December and January 2023. For more flight deals, be sure to check back very soon.
Non-stop flights to Seattle from Dulles Intl
Discover non-stop flight options from Dulles Intl to Seattle. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated December 7, 2023.
Consider booking one of these non-stop flights heading from Washington, D.C. to Seattle. Those looking to potentially save on 1 or 2-stop flights from Washington, D.C. to Seattle should utilize the search form at the the top of the page.
Dulles Intl to Seattle flights leaving soon
Find last-minute flight options from Dulles Intl to Seattle for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated December 7, 2023.
Check out these flights departing soon from Washington, D.C. to Seattle. It's wise to confirm all flight details are correct before booking.
One-way flights to Seattle from Dulles Intl
Search for one-way flight options from Dulles Intl to Seattle. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated December 7, 2023.
Users in need of a one-way flight from Washington, D.C. to Seattle can choose from these deals. Those seeking round-trip flights from Washington, D.C. to Seattle should utilize the search form at the the top of the page.
Find flights from Dulles Intl to Seattle within your budget
Customize your flight search to find flights from Dulles Intl to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated December 7, 2023.
Fly from
Fly to
Budget
$254 - $437
Route
Depart
Return
Price
Washington, D.C. Dulles IntlSeattle/Tacoma Intl
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Wed 1/17
1 stop10h 39m
Seattle/Tacoma Intl
Thu 1/25
1 stop7h 20m
Washington, D.C. Dulles IntlSeattle/Tacoma Intl
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Tue 1/16
1 stop9h 01m
Seattle/Tacoma Intl
Sat 1/20
1 stop9h 26m
Washington, D.C. Dulles IntlSeattle/Tacoma Intl
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Thu 1/11
1 stop9h 01m
Seattle/Tacoma Intl
Tue 1/16
1 stop7h 53m
Washington, D.C. Dulles IntlSeattle/Tacoma Intl
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Wed 1/17
Nonstop6h 00m
Seattle/Tacoma Intl
Mon 1/22
Nonstop5h 07m
Washington, D.C. Dulles IntlSeattle/Tacoma Intl
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Sun 1/21
1 stop9h 36m
Seattle/Tacoma Intl
Thu 2/1
Nonstop4h 55m
Washington, D.C. Dulles IntlSeattle/Tacoma Intl
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Wed 1/17
Nonstop6h 05m
Seattle/Tacoma Intl
Mon 1/22
2 stops11h 45m
Washington, D.C. Dulles IntlSeattle/Tacoma Intl
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Fri 1/5
1 stop10h 00m
Seattle/Tacoma Intl
Sun 1/14
1 stop11h 06m
Washington, D.C. Dulles IntlSeattle/Tacoma Intl
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Sun 1/14
Nonstop6h 03m
Seattle/Tacoma Intl
Sun 1/21
Nonstop4h 55m
Washington, D.C. Dulles IntlSeattle/Tacoma Intl
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Sun 12/17
3 stops28h 13m
Seattle/Tacoma Intl
Sat 1/13
3 stops19h 46m
Average price of flights to Seattle by month
Plan your trip from Dulles Intl to Seattle by taking into account the cheapest months to travel. The average price of a one-way flight from Dulles Intl to Seattle is currently 138.22 USD while a round-trip flight costs 295.11 USD. Price data was last updated on December 3, 2023.
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Seattle (average of $238). Flying from Washington, D.C. Dulles Intl Airport to Seattle in June is currently the most expensive (average of $433). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
January
$238
February
$238
March
$287
April
$306
May
$338
June
$433
July
$417
August
$346
September
$278
October
$258
November
$258
December
$245
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated December 7, 2023.
Get a feel of what it's like to fly with American Airlines, Alaska Airlines and United Airlines from Washington, D.C. to Seattle by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
Crew
Entertainment
Food
Overall
Boarding
Reviews
Was forced to check my bag, didn’t want to but really upset when got on the plane and nearly all the overheads were empty. And then even more upset when they lost my bag! So far it’s been 5 hours and they have no clue where my bag went. Don’t force me to check a normal carry on when there’s more than enough room!
Comfort
Crew
Entertainment
Food
Overall
Boarding
Reviews
Was forced to check my bag, didn’t want to but really upset when got on the plane and nearly all the overheads were empty. And then even more upset when they lost my bag! So far it’s been 5 hours and they have no clue where my bag went. Don’t force me to check a normal carry on when there’s more than enough room!
Comfort
Crew
Entertainment
Food
Overall
Boarding
Reviews
Was forced to check my bag, didn’t want to but really upset when got on the plane and nearly all the overheads were empty. And then even more upset when they lost my bag! So far it’s been 5 hours and they have no clue where my bag went. Don’t force me to check a normal carry on when there’s more than enough room!
Comfort
Crew
Entertainment
Food
Overall
Boarding
Reviews
Was forced to check my bag, didn’t want to but really upset when got on the plane and nearly all the overheads were empty. And then even more upset when they lost my bag! So far it’s been 5 hours and they have no clue where my bag went. Don’t force me to check a normal carry on when there’s more than enough room!
Comfort
Crew
Entertainment
Food
Overall
Boarding
Reviews
Was forced to check my bag, didn’t want to but really upset when got on the plane and nearly all the overheads were empty. And then even more upset when they lost my bag! So far it’s been 5 hours and they have no clue where my bag went. Don’t force me to check a normal carry on when there’s more than enough room!
Comfort
Crew
Entertainment
Food
Overall
Boarding
Reviews
Was forced to check my bag, didn’t want to but really upset when got on the plane and nearly all the overheads were empty. And then even more upset when they lost my bag! So far it’s been 5 hours and they have no clue where my bag went. Don’t force me to check a normal carry on when there’s more than enough room!
Average temperature in Seattle by month
Plan your trip to Seattle by selecting the month that matches your preferred temperature. July sees the highest average temperature while December sees the lowest average temperature. Temperature data was last updated on December 3, 2023.
SEA Temperature | 41 - 66.2 °F |
|---|
Average rainfall in Seattle by month
Keep in mind the precipitation totals in Seattle when planning your trip. Seattle sees an average of 3.13 precipitation per year with the most occurring in November. Precipitation data was last updated on December 3, 2023.
SEA Rainfall | 0.7 - 6.6 inches |
|---|
Related info for your journey
Find useful and relevant information for your journey from Dulles Intl to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airport do you fly into for flights to Seattle from Washington, D.C. Dulles Intl?
Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to Seattle. 5 airlines have flights to Seattle/Tacoma Intl from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 13 inbound flights from Washington, D.C. Dulles Intl per day.
Can I find flights from Washington, D.C. Dulles Intl Airport to Seattle for under $300 on Cheapflights?
Yes, there are multiple flights from Washington, D.C. Dulles Intl Airport to Seattle for under $300. The cheapest flight booked recently is on American Airlines for just $254, but on average you can expect to pay $278.
Are there nonstop flights from Washington, D.C. Dulles Intl Airport to Seattle for under $300 on Cheapflights?
Cheapflights has at least 20 direct flights from Washington, D.C. Dulles Intl Airport to Seattle under $300. A good price for a nonstop flight from Washington, D.C. Dulles Intl Airport to Seattle is less than $367.
Are there last-minute flights available from Washington, D.C. Dulles Intl Airport to Seattle for under $500?
There are currently 20+ open flights from Washington, D.C. Dulles Intl Airport to Seattle within the next 7 days for less than $500.
What days are nonstop flights available from Washington, D.C. Dulles Intl Airport to Seattle?
Nonstop flights can be found on the following days: Sunday, Monday, Tuesday, Thursday, Friday, Saturday.
How many flights depart from Washington, D.C. Dulles Intl Airport to Seattle on average per day?
Per day, 15 flights depart from Washington, D.C. Dulles Intl Airport to Seattle on average.
Morning (6am - Noon) - 33% of flight departures
Afternoon (Noon - 6pm) - 20% of flight departures
Evening (6pm - Midnight) - 47% of flight departures
How long is the flight from Washington, D.C. Dulles Intl Airport to Seattle?
There are many flights that can get you from Washington, D.C. Dulles Intl Airport to Seattle in 6h. Fly via American Airlines, Delta, or Alaska Airlines to get the fastest option. Airlines will cover a distance of 2313 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Seattle round-trip?
Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to Seattle round-trip from $254. Other airlines that can offer you cheap pricing are Delta, from $278, and Alaska Airlines, from $288. American Airlines is currently priced 36% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Seattle one-way?
To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $127. Alaska Airlines flights start at $139 while deals on United Airlines start at $149 one-way.
What are the most popular airlines that fly from Washington, D.C. Dulles Intl Airport to Seattle?
When booking a flight from Washington, D.C. Dulles Intl Airport to Seattle, you may want to consider flying on American Airlines, Alaska Airlines or Delta as they are the most popular for this route.
What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Seattle?
The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Seattle are Japan Airlines (100%), Virgin Atlantic (94%) and Air Tahiti Nui (93%).
What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Seattle?
The cheapest flight price from Washington, D.C. Dulles Intl Airport to Seattle is $144. On average you can expect to pay $759. The most popular route, (Washington, D.C. Dulles Intl - Seattle/Tacoma Intl), can usually be booked for $258.
What does IAD to SEA mean?
Great question - IAD to SEA just means Washington, D.C. Dulles Intl Airport to Seattle/Tacoma Intl Airport. Now you’ll know what these unique codes when you look for flights!
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Dulles Intl to SeattleSee prices for flight routes from nearby airports that may be better suited for you.
See prices for flight routes from nearby airports that may be better suited for you.
Top 5 airlines flying from Dulles Intl to Seattle
Discover the top 5 airlines that operate flights from Dulles Intl to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated December 7, 2023.
Search flights to Seattle by cabin class
Hourly flight availability from Dulles Intl to Seattle
Find hourly flight availability from Dulles Intl to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 7, 2023.
| 1%of flight departures | Early morningMidnight to 6 am |
|---|---|
| 16%of flight departures | Morning6 am to noon |
| 78%of flight departures | AfternoonNoon to 6 pm |
| 5%of flight departures | Evening6 pm to midnight |
Weekly flight availability from Dulles Intl to Seattle
Explore weekly flight availability from Dulles Intl to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 7, 2023.
| Sunday | 14daily flights |
|---|---|
| Monday | 14daily flights |
| Tuesday | 11daily flights |
| Wednesday | 13daily flights |
| Thursday | 12daily flights |
| Friday | 15daily flights |
| Saturday | 14daily flights |
Book a flight to one of these trending destinations
User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Dulles Intl to Seattle?
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Why should you use Cheapflights to find cheap flight tickets from Dulles Intl to Seattle?
Cheapflights simply makes it quick and affordable to book flights from Dulles Intl to Seattle by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
Can Cheapflights find flights from Dulles Intl to Seattle with no change fees?
Need flexible booking options for your flight to Seattle from Dulles Intl? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.
Can Cheapflights notify me if prices for flights from Dulles Intl to Seattle become cheaper?
Yes! Start tracking prices for Dulles Intl to Seattle flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.