Cheap flights from Washington, D.C. Dulles Intl Airport to Seattle from £110
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
Cheap flight deals from Dulles Intl to Seattle
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 16 May 2024.
Popular in | June |
|---|---|
Cheapest in | January |
Round-trip from | £460 |
One-way from | £176 |
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 53 days early can save you up to 61% on average compared to booking a flight this week. If booking 53 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 £372 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 £428 for flights departing within the next 3 days.
What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Seattle?
Our data shows that January tends to be the cheapest month to fly to Seattle from Washington, D.C. Dulles Intl Airport. Users have commonly found prices around £321 for the month, but tickets can be as low as £110. Due to multiple factors, prepare for potentially higher prices in June.
When is the cheapest time to fly from Washington, D.C. Dulles Intl Airport to Seattle (IAD - SEA)?
When flying from Washington, D.C. Dulles Intl Airport to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Cheap Delta flights from Dulles Intl to Seattle
Explore cheap flight options specifically provided by Delta 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 844,321 searches. Data last updated 16 May 2024.
Peruse some of the lowest-priced Delta flights we've found from Washington, D.C. to Seattle. Make sure to double check the flight details before booking.
Cheap United Airlines flights from Dulles Intl to Seattle
Explore cheap flight options specifically provided by United 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 844,321 searches. Data last updated 16 May 2024.
To aid your search, here are some of the cheapest United Airlines flights we've found from Washington, D.C. to Seattle. Deals are refreshing constantly so come back soon for more options.
Cheap Dulles Intl to Seattle flights in May & June 2024
Find cheap flight options from Dulles Intl to Seattle specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 844,321 searches. Prices were last updated on 16 May 2024.
Scroll through some of the best deals on flights from Washington, D.C. to Seattle in 2024. Check back in a little while for more flight options.
Dulles Intl to Seattle 2024 flight deals
Discover exclusive flight deals for travel between Dulles Intl and Seattle in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 844,321 searches. Data last updated 16 May 2024.
Scroll through some of the best deals on flights from Washington, D.C. to Seattle in 2024. Check back in a little while for more flight options.
Direct flights to Seattle from Dulles Intl
Discover direct flight options from Dulles Intl to Seattle. Find direct flights with no stopovers, providing a convenient travel experience. Explore direct flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 844,321 searches. Data last updated 16 May 2024.
If you're seeking options on non-stop flights from Washington, D.C. to Seattle, check out these fares. If you're looking for other options for flights from Washington, D.C. to Seattle, make sure to update the search form at the top of 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 844,321 searches. Data last updated 16 May 2024.
Users seeking a last-minute flight from Washington, D.C. to Seattle should consider booking one of these fares. To prevent any unwanted surprises, users should verify their flight info 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 844,321 searches. Data last updated 16 May 2024.
Users travelling one-way from Washington, D.C. to Seattle can select one of these great deals. Users in need of a round-trip flight from Washington, D.C. to Seattle instead should update the search form at the top of page.
Find flights from Dulles Intl to Seattle within your budget
Customise 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 844,321 searches. Data last updated 16 May 2024.
Fly from
Fly to
Budget
£219 - £307
Route
Depart
Return
Price
Washington, D.C. Dulles IntlSeattle/Tacoma Intl
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Sat 2/11
Nonstop5h 52m
Seattle/Tacoma Intl
Tue 12/11
Nonstop4h 56m
Washington, D.C. Dulles IntlSeattle/Tacoma Intl
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Thu 31/10
Nonstop5h 54m
Seattle/Tacoma Intl
Wed 13/11
Nonstop5h 06m
Washington, D.C. Dulles IntlSeattle/Tacoma Intl
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Tue 9/7
1 stop7h 59m
Seattle/Tacoma Intl
Fri 12/7
1 stop18h 38m
Washington, D.C. Dulles IntlSeattle/Tacoma Intl
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Wed 6/11
1 stop10h 48m
Seattle/Tacoma Intl
Wed 13/11
Nonstop4h 47m
Washington, D.C. Dulles IntlSeattle/Tacoma Intl
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Thu 31/10
Nonstop5h 52m
Seattle/Tacoma Intl
Mon 4/11
Nonstop4h 56m
Washington, D.C. Dulles IntlSeattle/Tacoma Intl
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Mon 26/8
1 stop8h 45m
Seattle/Tacoma Intl
Sat 31/8
Nonstop5h 08m
Washington, D.C. Dulles IntlSeattle/Tacoma Intl
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Mon 22/7
1 stop24h 54m
Seattle/Tacoma Intl
Mon 29/7
1 stop7h 38m
Washington, D.C. Dulles IntlSeattle/Tacoma Intl
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Thu 5/9
1 stop8h 45m
Seattle/Tacoma Intl
Thu 12/12
Nonstop5h 01m
Washington, D.C. Dulles IntlSeattle/Tacoma Intl
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Thu 6/6
Nonstop5h 47m
Seattle/Tacoma Intl
Mon 10/6
Nonstop4h 59m
When is the best time to book a flight from Washington, D.C. Dulles Intl Airport to Seattle?
Use this chart to determine the optimal time to book a return flight from Dulles Intl to Seattle. Price data was last updated on 10 May 2024.
The best time to book flights from Washington, D.C. Dulles Intl Airport to Seattle is 34 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
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 £126 while a return flight costs £236. Price data was last updated on 12 May 2024.
Currently, December is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Seattle (average of £583). Flying from Washington, D.C. Dulles Intl Airport to Seattle in July is currently the most expensive (average of £799). 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
£481
February
£469
March
£499
April
£513
May
£531
June
£604
July
£630
August
£605
September
£540
October
£518
November
£473
December
£460
Temperature and rainfall in Seattle by month
Plan your trip to Seattle by taking into account the average temperature and rainfall totals by month.
SEA Temperature | 5 - 19 °C |
|---|
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 16 May 2024.
See what other customers who have flown with Delta, United Airlines and Alaska Airlines from Washington, D.C. to Seattle have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
Boarding
Comfort
Entertainment
Crew
Overall
Reviews
There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.
Food
Boarding
Comfort
Entertainment
Crew
Overall
Reviews
There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.
Food
Boarding
Comfort
Entertainment
Crew
Overall
Reviews
There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.
Food
Boarding
Comfort
Entertainment
Crew
Overall
Reviews
There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.
Food
Boarding
Comfort
Entertainment
Crew
Overall
Reviews
There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.
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.
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Complete your tripComplete your trip to Seattle by adding a car hire and/or hotel booking to your travel itinerary.
Complete your trip to Seattle by adding a car hire and/or hotel booking to your travel itinerary.
Search flights from Dulles Intl to Seattle by cabin class
Find flights from Dulles Intl to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first 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 16 May 2024.
| 1%of flight departures | Early morningMidnight to 6 am |
|---|---|
| 53%of flight departures | Morning6 am to noon |
| 35%of flight departures | AfternoonNoon to 6 pm |
| 11%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 16 May 2024.
| Monday | 14daily flights |
|---|---|
| Tuesday | 11daily flights |
| Wednesday | 13daily flights |
| Thursday | 12daily flights |
| Friday | 15daily flights |
| Saturday | 14daily flights |
| Sunday | 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
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How does Cheapflights help users find flights from Dulles Intl to Seattle?
When you search for this flight from Dulles Intl to Seattle, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Dulles Intl to Seattle?
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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, Cheapflights offers price alerts on Dulles Intl to Seattle flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.