Question 1

What are the cheapest airlines flying from Washington, D.C. Reagan-National Airport to Seattle round-trip?

Accepted Answer

Our cheapest airline available from Washington, D.C. Reagan-National Airport to Seattle is Alaska Airlines. Our recent data shows that you can find tickets from as low as C$ 354 on this airline. Additional options worth looking into are Hawaiian Airlines and Frontier, starting at C$ 362 and C$ 367 round-trip. You may be able to fly from Washington, D.C. Reagan-National Airport to Seattle for 44% less than the average price by searching for these airlines.

Question 2

What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to Seattle one-way?

Accepted Answer

To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at C$ 204. Southwest flights start at C$ 212 while deals on Hawaiian Airlines start at C$ 217 one-way.

Question 3

How far ahead should I book a flight from Washington, D.C. Reagan-National Airport to Seattle?

Accepted Answer

Booking 85 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. Reagan-National Airport to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Question 4

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Seattle?

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Seattle (average of C$ 262). Flying from Washington, D.C. Reagan-National Airport to Seattle in December is currently the most expensive (average of C$ 353). 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.

Question 5

What is the cheapest day to fly from Washington, D.C. Reagan-National Airport to Seattle?

Accepted Answer

Travelers seeking maximum savings on their Washington, D.C. Reagan-National Airport to Seattle flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Question 6

Weekly flight availability from Washington, D.C. Reagan-National Airport to Seattle

Accepted Answer

The most flights from DCA to SEA are scheduled on a Monday (11 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (9 on average).

Question 7

E

Accepted Answer

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 mm per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Question 8

E

Accepted Answer

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Question 9

What are the cheapest flights from Washington, D.C. Reagan-National Airport to Seattle?

Accepted Answer

Looking for the cheapest flight from Washington, D.C. Reagan-National Airport to Seattle? While on average our users pay C$ 247, our data indicates the cheapest price to be C$ 247. The most popular route (Washington, D.C. Reagan-National - Seattle/Tacoma Intl), is priced around C$ 615.

Question 10

What are the most reliable airlines from Washington, D.C. Reagan-National Airport to Seattle?

Accepted Answer

Before booking your flight to Seattle from Washington, D.C. Reagan-National Airport, check out the most reliable airlines to get you to your destination on time: Japan Airlines (84%), Korean Air (84%), Finnair( 83%).

Question 11

How far in advance should I book a flight from Washington, D.C. Reagan-National Airport to Seattle?

Accepted Answer

Users have found that booking a flight from Washington, D.C. Reagan-National Airport to Seattle at least 44 days early can save you up to 92% on average compared to booking a flight this week. If booking 44 days before your flight isn’t an option for you, users have found flights from Washington, D.C. Reagan-National Airport to Seattle for as little as C$ 772 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 C$ 860 for flights departing within the next 3 days.

Question 12

What is the cheapest month to fly from Washington, D.C. Reagan-National Airport to Seattle?

Accepted Answer

The best pricing can be found in the month of September. Prices to Seattle from Washington, D.C. Reagan-National Airport average C$ 556. You can even find prices in September for less than C$ 556, as users have found deals to Seattle from as low as C$ 260. The month of December appears to be one of the more expensive times to travel to Seattle from Washington, D.C. Reagan-National Airport. Flying in the targeted month can save you up to 21%.

Question 13

What is the cheapest time of day to fly from DCA to SEA?

Accepted Answer

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Reagan-National Airport to Seattle as you normally would.

Question 14

What airport do you fly into for flights to Seattle from Washington, D.C. Reagan-National?

Accepted Answer

Located just 18.4 km from the city centre, Seattle/Tacoma Intl is the airport most travellers will use when flying to Seattle from Washington, D.C. Reagan-National. Booking flights from Washington, D.C. Reagan-National to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 9 daily inbound flights from Washington, D.C. Reagan-National from 0 different airlines.

Question 15

Can I find deals for flights from Reagan-National to Seattle that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Reagan-National to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

Question 16

How can I find direct flights from Reagan-National to Seattle?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Seattle.

Question 17

Can I find deals for business class flights from Reagan-National to Seattle?

Accepted Answer

Yes. Cheapflights offers flight deals from Reagan-National to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 18

How does Cheapflights help users find flights from Reagan-National to Seattle?

Accepted Answer

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Reagan-National to Seattle. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Question 19

Why should you use Cheapflights to find cheap flight tickets from Reagan-National to Seattle?

Accepted Answer

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Seattle from Reagan-National.

Question 20

Can Cheapflights find flights from Reagan-National to Seattle with no change fees?

Accepted Answer

Yes! Cheapflights helps users easily find flights from Reagan-National to Seattle with no change fees.

Question 21

Can Cheapflights notify me if prices for flights from Reagan-National to Seattle become cheaper?

Accepted Answer

Yes, Cheapflights offers price alerts on Reagan-National 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.

Round-trip from	C$ 354
One-way from	C$ 204
Popular in	December
Cheapest in	September
Average price	C$ 697
Good round-trip deal	C$ 247 or less

Cheap flights from Washington, D.C. Reagan-National Airport to Seattle from C$ 204

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 26/8. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Reagan-National to Seattle

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Cheapest flights from Reagan-National to SeattleExplore the most affordable flight options available from Reagan-National to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 July 2025.

Explore the most affordable flight options available from Reagan-National to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 July 2025.

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Best time to book a flight from Reagan-National to Seattle

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Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to Seattle

How far ahead should I book a flight from Washington, D.C. Reagan-National Airport to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Reagan-National to Seattle. Price data was last updated on 25 July 2025.

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Seattle?

What is the cheapest time of day to fly from DCA to SEA?

Find hourly flight availability from Reagan-National 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 29 July 2025.

Weekly flight availability from Washington, D.C. Reagan-National Airport to Seattle

Reviews of airlines servicing Seattle

See what other customers who have flown with Alaska Airlines,Southwest, andDelta from Washington, D.C. Reagan-National Airport to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National 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. Reagan-National?

What are the cheapest airlines flying from Washington, D.C. Reagan-National Airport to Seattle round-trip?

What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to Seattle one-way?

What are the most reliable airlines from Washington, D.C. Reagan-National Airport to Seattle?

What are the cheapest flights from Washington, D.C. Reagan-National Airport to Seattle?

Can I find deals for flights from Reagan-National to Seattle that include hotel bookings?

How can I find direct flights from Reagan-National to Seattle?

Can I find deals for business class flights from Reagan-National to Seattle?

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Seattle?

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Can Cheapflights find flights from Reagan-National to Seattle with no change fees?

Can Cheapflights notify me if prices for flights from Reagan-National to Seattle become cheaper?

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Cheapest flights from Reagan-National to Seattle
Explore the most affordable flight options available from Reagan-National to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 July 2025.