United States · 2,322 miles (3,737 km)

Washington (DCA) to Seattle (SEA) flights

Alaska Atmos Rewards logo
12,500 milesCheapest economy award, one way, with Alaska Atmos Rewards

An economy award from Washington (DCA) to Seattle (SEA) starts at 12,500 miles one way with Alaska Atmos Rewards on Alaska Airlines, plus taxes and fees from $5.60. American AAdvantage charges the same. 2 airlines fly nonstop from Washington (DCA) to Seattle (SEA): Alaska Airlines and Delta Air Lines. The two airports are 2,322 miles (3,737 km) apart. Alaska Airlines is in oneworld and Delta Air Lines is in SkyTeam. There are also 48 ways to fly it with one stop, through Milwaukee, Minneapolis and Pittsburgh and more.

How many miles DCA to SEA costs

Economy, one way, on the nonstop flights, from the Award Flight Pricer's award charts. Ranges run off-peak to peak; "from" is the floor of a dynamic price.

ProgramEconomyTaxes and fees
Alaska Atmos RewardsOn Alaska Airlines12,500$5.60
American AAdvantageOn Alaska Airlines12,500$5.60
Iberia ClubOn Alaska Airlines13,000$5.60
Cathay Pacific Asia MilesOn Alaska Airlines15,000$5.60
SAS EuroBonusOn Delta Air Lines15,000$56–112
Qatar Airways Privilege ClubOn Alaska Airlines16,000$5.60
British Airways ClubOn Alaska Airlines20,000$5.60
Starlux (COSMILE)On Alaska Airlines20,000$38.60
Virgin Atlantic Flying ClubOn Delta Air Lines22,000$5.60
JAL Mileage BankOn Alaska Airlines23,000$5.60
Qantas Frequent FlyerOn Alaska Airlines23,000$5.60

Business and first class prices are in the Award Flight Pricer. Chart prices need award space on your date, so search it before you transfer points.

Compare every program in the Award Flight Pricer

Airlines flying nonstop from DCA to SEA

Book DCA to SEA with points

Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.

DCA to SEA with one stop

48 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.

  • Via Milwaukee (MKE)Southwest Airlines and American Airlines, then Alaska Airlines
    Southwest Airlines logo
    American Airlines logo
    Alaska Airlines logo
  • Via Minneapolis (MSP)Delta Air Lines the whole way
    American Airlines logo
    Delta Air Lines logo
    Alaska Airlines logo
    Delta Air Lines logo
    Sun Country Airlines logo
  • Via Pittsburgh (PIT)American Airlines the whole way
    American Airlines logo
    Alaska Airlines logo
    American Airlines logo
  • Via Cleveland (CLE)American Airlines, then Alaska Airlines
    American Airlines logo
    Alaska Airlines logo
  • Via Detroit (DTW)Delta Air Lines the whole way
    American Airlines logo
    Delta Air Lines logo
    Alaska Airlines logo
    Delta Air Lines logo
  • Via Chicago (ORD)American Airlines and United Airlines the whole way
    American Airlines logo
    United Airlines logo
    American Airlines logo
    Alaska Airlines logo
    Delta Air Lines logo
    +1
  • Via Chicago (MDW)Southwest Airlines the whole way
    Southwest Airlines logo
    Southwest Airlines logo
  • Via Columbus (CMH)American Airlines and Southwest Airlines, then Alaska Airlines
    American Airlines logo
    Southwest Airlines logo
    Alaska Airlines logo
  • Via Cedar Rapids (CID)American Airlines the whole way
    American Airlines logo
    American Airlines logo
  • Via Indianapolis (IND)American Airlines the whole way
    American Airlines logo
    Alaska Airlines logo
    American Airlines logo
  • Via Cincinnati (CVG)Delta Air Lines the whole way
    American Airlines logo
    Delta Air Lines logo
    Delta Air Lines logo
    Alaska Airlines logo
  • Via Omaha (OMA)Delta Air Lines and Southwest Airlines, then Alaska Airlines
    Delta Air Lines logo
    Southwest Airlines logo
    Alaska Airlines logo
  • Via Toronto (YYZ)Air Canada the whole way
    American Airlines logo
    Air Canada logo
    Air Canada logo
    Alaska Airlines logo
  • Via Saint Louis (STL)Southwest Airlines the whole way
    American Airlines logo
    Southwest Airlines logo
    Alaska Airlines logo
    Southwest Airlines logo
  • Via Kansas City (MCI)Southwest Airlines the whole way
    American Airlines logo
    Southwest Airlines logo
    Alaska Airlines logo
    Southwest Airlines logo
    Delta Air Lines logo
See all 48 in Routes

DCA to SEA: common questions

How many miles does DCA to SEA cost?

In economy it starts at 12,500 miles one way with Alaska Atmos Rewards on Alaska Airlines, plus taxes and fees from $5.60. Next cheapest: American AAdvantage (12,500), Iberia Club (13,000) and Cathay Pacific Asia Miles (15,000). These are award chart prices from the Award Flight Pricer. Programs that price dynamically can cost more on busy dates, so check yours before you transfer points. Business and first class prices are in the pricer too.

Which airlines fly nonstop from DCA to SEA?

Alaska Airlines (oneworld) and Delta Air Lines (SkyTeam) fly nonstop from Washington (DCA) to Seattle (SEA).

How far is Washington from Seattle by plane?

Washington (DCA) and Seattle (SEA) are 2,322 miles (3,737 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.

Which points programs can book DCA to SEA award flights?

17 programs can book at least one of the nonstop airlines: Aeromexico Rewards, Air France-KLM Flying Blue, Alaska Atmos Rewards, American AAdvantage, British Airways Club, Cathay Pacific Asia Miles, China Eastern Eastern Miles, Delta SkyMiles and 9 more. Which flights each can book depends on its partners, so check the airline before you transfer points.

Where can I connect between Washington and Seattle?

The most direct connections are through Milwaukee (MKE), Minneapolis (MSP), Pittsburgh (PIT), Cleveland (CLE) and Detroit (DTW). On 35 of them the same airline flies both flights, for example Delta Air Lines through Minneapolis.

More routes

Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.