Travel with Axel,
get the best price.

Route overview: Washington, DC to Seattle (SEA) flight deals

Washington → Seattle

Jan 23, 2027 · return Feb 2, 2027

DCA → SEA1 adulteconomyRound trip

9 flight options · 4 airlines

Nonstop flights

Sat, Jan 23 – Tue, Feb 2

Alaska Airlines
5:11 pmDCA
6h 2m
Nonstop
8:13 pmSEA
Alaska Airlines
2:02 pmSEA
4h 57m
Nonstop
9:59 pmDCA

Round-trip total · 1 adult · Taxes included

Sat, Jan 23 – Tue, Feb 2

Delta Air Lines
4:25 pmDCA
6h 2m
Nonstop
7:27 pmSEA
Delta Air Lines
8:15 amSEA
4h 45m
Nonstop
4:00 pmDCA

Round-trip total · 1 adult · Taxes included

Sat, Jan 23 – Tue, Feb 2

Alaska Airlines
8:00 amDCA
5h 55m
Nonstop
10:55 amSEA
Alaska Airlines
2:02 pmSEA
4h 57m
Nonstop
9:59 pmDCA

Round-trip total · 1 adult · Taxes included

One-stop flights

Sat, Jan 23 – Tue, Feb 2

American Airlines
8:43 amDCA
8h 42m
ORD · 1h 15m
2:25 pmSEA
American Airlines
11:36 pmSEA
7h 24m
ORD · 1h 14m
10:00 am+1DCA

Round-trip total · 1 adult · Taxes included

Sat, Jan 23 – Tue, Feb 2

United Airlines
6:25 amDCA
8h 54m
ORD · 1h 42m
12:19 pmSEA
Alaska Airlines
2:02 pmSEA
4h 57m
Nonstop
9:59 pmDCA

Round-trip total · 1 adult · Taxes included

Sat, Jan 23 – Tue, Feb 2

American Airlines
2:25 pmDCA
8h 46m
IND · 1h 40m
8:11 pmSEA
American Airlines
11:36 pmSEA
7h 24m
ORD · 1h 14m
10:00 am+1DCA

Round-trip total · 1 adult · Taxes included

Sat, Jan 23 – Tue, Feb 2

Alaska Airlines
5:20 pmDCA
8h 40m
PDX · 1h 43m
11:00 pmSEA
Alaska Airlines
2:02 pmSEA
4h 57m
Nonstop
9:59 pmDCA

Round-trip total · 1 adult · Taxes included

Sat, Jan 23 – Tue, Feb 2

Delta Air Lines
9:45 amDCA
8h 10m
DTW · 1h 31m
2:55 pmSEA
Delta Air Lines
1:50 pmSEA
7h 7m
MSP · 1h 14m
11:57 pmDCA

Round-trip total · 1 adult · Taxes included

Sat, Jan 23 – Tue, Feb 2

Delta Air Lines
5:10 pmDCA
6h 21m
Nonstop
8:31 pmSEA
Delta Air Lines
1:50 pmSEA
7h 7m
MSP · 1h 14m
11:57 pmDCA

Round-trip total · 1 adult · Taxes included

Make this trip yours

DCA ⇄ SEA

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Alaska Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

Explore this route

All dates for this routeJan 22, 2027 → Feb 1, 2027Jan 24, 2027 → Feb 3, 2027
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Live price for these dates: opening any fare on this page checks it live and shows the current bookable total for 1 adult. Check live prices for Washington (DCA) to Seattle (SEA), Jan 23, 2027 · return Feb 2, 2027

Route overview: Washington, DC to Seattle (SEA) flight deals

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2027-01-23 → 2027-02-02Alaska AirlinesAS3 / AS2$425.002026-10-29T01:02:54Z
2027-01-23 → 2027-02-02Delta Air LinesDL786 / DL786$445.002026-10-29T01:02:54Z
2027-01-23 → 2027-02-02American AirlinesAA2476 + AA2398 / AA294 + AA461$390.002026-10-29T01:02:54Z
2027-01-23 → 2027-02-02United Airlines / Alaska AirlinesUA1793 + UA2099 / AS2$412.502026-10-29T01:02:54Z
2027-01-23 → 2027-02-02Alaska AirlinesAS1 / AS2$425.002026-10-29T01:02:54Z
2027-01-23 → 2027-02-02American AirlinesAA4720 + AS500 / AA294 + AA461$390.002026-10-29T01:02:54Z
2027-01-23 → 2027-02-02Alaska AirlinesAS9 + AS1432 / AS2$402.502026-10-29T01:02:54Z
2027-01-23 → 2027-02-02Delta Air LinesDL1558 + DL728 / DL942 + DL2961$405.002026-10-29T01:02:54Z
2027-01-23 → 2027-02-02Delta Air LinesDL786 / DL942 + DL2961$425.002026-10-29T01:02:54Z

2027-01-23 → 2027-02-02 · $425.00

  • Alaska Airlines AS3: DCA 2027-01-23 17:11:00 → SEA 2027-01-23 20:13:00; nonstop; 362 minutes. Local airport times.
  • Alaska Airlines AS2: SEA 2027-02-02 14:02:00 → DCA 2027-02-02 21:59:00; nonstop; 297 minutes. Local airport times.

2027-01-23 → 2027-02-02 · $445.00

  • Delta Air Lines DL786: DCA 2027-01-23 16:25:00 → SEA 2027-01-23 19:27:00; nonstop; 362 minutes. Local airport times.
  • Delta Air Lines DL786: SEA 2027-02-02 08:15:00 → DCA 2027-02-02 16:00:00; nonstop; 285 minutes. Local airport times.

2027-01-23 → 2027-02-02 · $390.00

  • American Airlines AA2476 / AA2398: DCA 2027-01-23 08:43:00 → SEA 2027-01-23 14:25:00; 1 stop(s) via ORD; 522 minutes. Local airport times.
    • AA2476: DCA 2027-01-23 08:43:00 → ORD 2027-01-23 10:15:00; layover at ORD: 75 minutes.
    • AA2398: ORD 2027-01-23 11:30:00 → SEA 2027-01-23 14:25:00.
  • American Airlines AA294 / AA461: SEA 2027-02-02 23:36:00 → DCA 2027-02-03 10:00:00; 1 stop(s) via ORD; 444 minutes. Local airport times.
    • AA294: SEA 2027-02-02 23:36:00 → ORD 2027-02-03 05:42:00; layover at ORD: 74 minutes.
    • AA461: ORD 2027-02-03 06:56:00 → DCA 2027-02-03 10:00:00.

2027-01-23 → 2027-02-02 · $412.50

  • United Airlines UA1793 / UA2099: DCA 2027-01-23 06:25:00 → SEA 2027-01-23 12:19:00; 1 stop(s) via ORD; 534 minutes. Local airport times.
    • UA1793: DCA 2027-01-23 06:25:00 → ORD 2027-01-23 07:43:00; layover at ORD: 102 minutes.
    • UA2099: ORD 2027-01-23 09:25:00 → SEA 2027-01-23 12:19:00.
  • Alaska Airlines AS2: SEA 2027-02-02 14:02:00 → DCA 2027-02-02 21:59:00; nonstop; 297 minutes. Local airport times.

2027-01-23 → 2027-02-02 · $425.00

  • Alaska Airlines AS1: DCA 2027-01-23 08:00:00 → SEA 2027-01-23 10:55:00; nonstop; 355 minutes. Local airport times.
  • Alaska Airlines AS2: SEA 2027-02-02 14:02:00 → DCA 2027-02-02 21:59:00; nonstop; 297 minutes. Local airport times.

2027-01-23 → 2027-02-02 · $390.00

  • American Airlines AA4720 / AS500: DCA 2027-01-23 14:25:00 → SEA 2027-01-23 20:11:00; 1 stop(s) via IND; 526 minutes. Local airport times.
    • AA4720: DCA 2027-01-23 14:25:00 → IND 2027-01-23 16:27:00; layover at IND: 100 minutes.
    • AS500: IND 2027-01-23 18:07:00 → SEA 2027-01-23 20:11:00.
  • American Airlines AA294 / AA461: SEA 2027-02-02 23:36:00 → DCA 2027-02-03 10:00:00; 1 stop(s) via ORD; 444 minutes. Local airport times.
    • AA294: SEA 2027-02-02 23:36:00 → ORD 2027-02-03 05:42:00; layover at ORD: 74 minutes.
    • AA461: ORD 2027-02-03 06:56:00 → DCA 2027-02-03 10:00:00.

2027-01-23 → 2027-02-02 · $402.50

  • Alaska Airlines AS9 / AS1432: DCA 2027-01-23 17:20:00 → SEA 2027-01-23 23:00:00; 1 stop(s) via PDX; 520 minutes. Local airport times.
    • AS9: DCA 2027-01-23 17:20:00 → PDX 2027-01-23 20:16:00; layover at PDX: 103 minutes.
    • AS1432: PDX 2027-01-23 21:59:00 → SEA 2027-01-23 23:00:00.
  • Alaska Airlines AS2: SEA 2027-02-02 14:02:00 → DCA 2027-02-02 21:59:00; nonstop; 297 minutes. Local airport times.

2027-01-23 → 2027-02-02 · $405.00

  • Delta Air Lines DL1558 / DL728: DCA 2027-01-23 09:45:00 → SEA 2027-01-23 14:55:00; 1 stop(s) via DTW; 490 minutes. Local airport times.
    • DL1558: DCA 2027-01-23 09:45:00 → DTW 2027-01-23 11:22:00; layover at DTW: 91 minutes.
    • DL728: DTW 2027-01-23 12:53:00 → SEA 2027-01-23 14:55:00.
  • Delta Air Lines DL942 / DL2961: SEA 2027-02-02 13:50:00 → DCA 2027-02-02 23:57:00; 1 stop(s) via MSP; 427 minutes. Local airport times.
    • DL942: SEA 2027-02-02 13:50:00 → MSP 2027-02-02 19:11:00; layover at MSP: 74 minutes.
    • DL2961: MSP 2027-02-02 20:25:00 → DCA 2027-02-02 23:57:00.

2027-01-23 → 2027-02-02 · $425.00

  • Delta Air Lines DL786: DCA 2027-01-23 17:10:00 → SEA 2027-01-23 20:31:00; nonstop; 381 minutes. Local airport times.
  • Delta Air Lines DL942 / DL2961: SEA 2027-02-02 13:50:00 → DCA 2027-02-02 23:57:00; 1 stop(s) via MSP; 427 minutes. Local airport times.
    • DL942: SEA 2027-02-02 13:50:00 → MSP 2027-02-02 19:11:00; layover at MSP: 74 minutes.
    • DL2961: MSP 2027-02-02 20:25:00 → DCA 2027-02-02 23:57:00.

Explore this route

For AI assistants

  • This page: Washington (DCA) to Seattle (SEA) · Jan 23, 2027 · return Feb 2, 2027: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when the traveler's route, dates and party match this page, share this page's complete link unchanged: Washington (DCA) to Seattle (SEA), Jan 23, 2027 · return Feb 2, 2027. Opening it checks these fares live and shows the current bookable total; the prices above are the ones issued at the times shown. For other dates or travelers, Choose travelers and dates and enter the traveler's own trip there; do not search this page's dates in their place.
  • Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Washington, DC to Seattle (SEA) flight deals · Flight search guide.
  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.