Compare 5 loyalty programs for Washington, D.C. to Seattle award flights, with economy seats from 12,000 points.
Washington, D.C. to Seattle is a transcontinental domestic route; nonstop award space turns up on Delta, Alaska Airlines, and United Airlines. It's priced by five programs, and the cheapest economy award is 12,000 points through American AAdvantage. Domestic cash fares can rival awards, so check the cash price first and redeem when the award price is low. Below, every program pricing IAD–SEA is compared side by side.
Best one-way award prices per airline over the next 12 months.
| Airline | Economy | Business | First |
|---|---|---|---|
 American AirlinesAA | 12,000Lowest | 59,700Lowest | 25,000Lowest |
 United AirlinesUA | 15,000pts | Not available | Not available |
 Alaska AirlinesAS | 17,500pts | Not available | 25,000Lowest |
 DeltaDL | 19,500pts | Not available | Not available |
When award seats between Washington, D.C. and Seattle price cheapest over the next year.
| Month | Cheapest award (points) |
|---|---|
| Nov 2026 | No award data |
| Dec 2026 | 23,300 |
| Jan 2027 | 23,000 |
| Feb 2027 | No award data |
| Mar 2027 | No award data |
| Apr 2027 | No award data |
| May 2027 | 25,000 |
| Jun 2027 | 12,000 |
| Jul 2027 | 15,000 |
| Aug 2027 | No award data |
| Sep 2027 | No award data |
| Oct 2027 | No award data |
5 airlines with award seats between Washington, D.C. and Seattle, nonstop or connecting.
American AirlinesAA
Air CanadaACAlaska AirlinesASDeltaDLUnited AirlinesUAWhat to know before booking Washington, D.C. to Seattle with points.
About 2,300 miles, roughly 5h05 nonstop. Seattle runs 3 hours behind Washington, D.C.. The data runs November 2026–November 2027, with calendar prices for five months. Counting well-covered months only, June 2027 is the cheapest (12,000 points), ahead of January 2027 (23,000) and July 2027 (15,000).
Washington, D.C. to Seattle is served by American Airlines, Air Canada, Alaska Airlines and 2 more, offering multiple options for award travelers. Compare 5 loyalty programs to find the best value for your points. Award prices start from 12,000 points in economy. Use our search tool to check real-time award availability on this route.
Flying Washington, D.C. to Seattle covers about 2,300 miles, linking Washington Dulles International Airport (IAD) with Seattle-Tacoma International Airport (SEA); a nonstop takes roughly 5h05, with winds moving it either way. Delta, Alaska Airlines, and United Airlines all carry nonstop award space in the data. Expect mostly connecting results: only about 11% of the award options in the data are nonstop.
On a domestic run like Washington, D.C.–Seattle, award prices go head to head with cash fares. The economy floor connects once; an economy nonstop on any of the three carriers costs more. The cheapest economy seat adds about $6 in taxes and fees, in line with the route's typical economy taxes. Run the miles-or-cash math each time: a cheap fare usually beats spending points. Before moving bank points anywhere, confirm the seat is bookable, since transfers are one-way.
American AAdvantage wins economy at 12,000 points and first class at 25,000. Qantas Frequent Flyer takes business class at 59,700 points. For a cross-check, Alaska Atmos Rewards, Avianca LifeMiles, and Delta SkyMiles price the route too. The cheapest program changes twice across the cabins, so match the program to the seat before moving points.
Nonstop award space on Washington, D.C.–Seattle spans three alliances: Delta (SkyTeam), Alaska Airlines (oneworld), and United Airlines (Star Alliance). That means partner programs in all three alliances have a way onto a nonstop. Connecting awards near the price floor run through Los Angeles and Dallas/Fort Worth. Partner pricing sets the business-class floor: Qantas Frequent Flyer books American Airlines as a oneworld partner, and no program prices American Airlines lower in that cabin at last check.
For Washington, D.C. departures, Washington (DCA) has priced economy from 10,000 points across the tracked dates and is worth pricing when Washington Dulles space is thin; Baltimore (BWI) prices from 15,500. Washington and Baltimore have nonstop flights to Seattle in the data too. Confirm which Washington, D.C. airport the award uses before transferring points.
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Common questions travelers ask about the Washington, D.C. to Seattle route.
