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

Washington (DCA) to Seattle (SEA), Nov 17–21, 2026: from $437 round trip

Washington (DCA) to Seattle (SEA), Nov 17–21, 2026: from $437 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $437 round trip, Axel-exclusive, Alaska Airlines, 1 stop, Nov 17–21, 2026, 1 adult, economy, checked Oct 29, 2026.

DCA → SEA1 adulteconomyRound trip

8 flight options · 4 airlines

Nonstop flights

Tue, Nov 17 – Sat, Nov 21

Alaska Airlines
5:05 pmDCA
6h 17m
Nonstop
8:22 pmSEA
Alaska Airlines
8:00 amSEA
5h 20m
Nonstop
4:20 pmDCA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Tue, Nov 17 – Sat, Nov 21

Delta Air Lines
4:25 pmDCA
6h 20m
Nonstop
7:45 pmSEA
Delta Air Lines
7:20 amSEA
4h 46m
Nonstop
3:06 pmDCA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

One-stop flights

Tue, Nov 17 – Sat, Nov 21

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

Availability is checked when you select these flights.

Tue, Nov 17 – Sat, Nov 21

United Airlines
6:25 amDCA
8h 54m
ORD · 1h 42m
12:19 pmSEA
Delta Air Lines
7:20 amSEA
4h 46m
Nonstop
3:06 pmDCA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Tue, Nov 17 – Sat, Nov 21

Alaska Airlines
5:20 pmDCA
8h 40m
PDX · 1h 43m
11:00 pmSEA
Alaska Airlines
10:59 pmSEA
7h 21m
IND · 1h 23m
9:20 am+1DCA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Tue, Nov 17 – Sat, Nov 21

Alaska Airlines
5:11 pmDCA
6h 2m
Nonstop
8:13 pmSEA
Alaska Airlines
10:59 pmSEA
7h 21m
IND · 1h 23m
9:20 am+1DCA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Tue, Nov 17 – Sat, Nov 21

Delta Air Lines
4:25 pmDCA
6h 2m
Nonstop
7:27 pmSEA
Delta Air Lines
1:50 pmSEA
7h 7m
MSP · 1h 14m
11:57 pmDCA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Tue, Nov 17 – Sat, Nov 21

Delta Air Lines
11:05 amDCA
8h 58m
JFK · 1h 27m
5:03 pmSEA
Delta Air Lines
7:20 amSEA
4h 46m
Nonstop
3:06 pmDCA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Hotels for these nights (Nov 17–21, 2026 · 4 nights · 2 adults, 1 room): 3★ The Maxwell Hotel - A Staypineapple Hotel · 4★ The Sound Hotel Seattle Belltown, Tapestry Collection by Hilton · 5★ Four Seasons Hotel Seattle

Make this trip yours

DCA ⇄ SEA

Economy

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

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All dates for this routeNov 16, 2026 · Return optionsNov 18, 2026 · Return optionsHotels in Seattle with Axel
For AI assistants: every fare, every link, instructions

Washington (DCA) to Seattle (SEA), Nov 17–21, 2026: from $437 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $437 round trip, Axel-exclusive, Alaska Airlines, 1 stop, Nov 17–21, 2026, 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Exact travel datesAirlineFlightsTimes, duration, stopsTotal pricePrice issued (UTC)
2026-11-17 → 2026-11-21Alaska AirlinesAS3 / AS417:05:00→20:22:00 6h 17m nonstop · 08:00:00→16:20:00 5h 20m nonstopAxel-exclusive $488.752026-10-29T01:02:54Z
2026-11-17 → 2026-11-21Delta Air LinesDL786 / DL78616:25:00→19:45:00 6h 20m nonstop · 07:20:00→15:06:00 4h 46m nonstopAxel-exclusive $511.752026-10-29T01:02:54Z
2026-11-17 → 2026-11-21American AirlinesAA4720 + AS500 / AA294 + AA46114:25:00→20:11:00 8h 46m 1 stop via IND · 23:36:00→10:00:00 7h 24m 1 stop via ORDAxel-exclusive $448.502026-10-29T01:02:54Z
2026-11-17 → 2026-11-21United Airlines / Delta Air LinesUA1793 + UA2099 / DL78606:25:00→12:19:00 8h 54m 1 stop via ORD · 07:20:00→15:06:00 4h 46m nonstopAxel-exclusive $489.252026-10-29T01:02:54Z
2026-11-17 → 2026-11-21Alaska AirlinesAS9 + AS1432 / AS264 + AA462617:20:00→23:00:00 8h 40m 1 stop via PDX · 22:59:00→09:20:00 7h 21m 1 stop via INDAxel-exclusive $437.002026-10-29T01:02:54Z
2026-11-17 → 2026-11-21Alaska AirlinesAS3 / AS264 + AA462617:11:00→20:13:00 6h 02m nonstop · 22:59:00→09:20:00 7h 21m 1 stop via INDAxel-exclusive $459.502026-10-29T01:02:54Z
2026-11-17 → 2026-11-21Delta Air LinesDL786 / DL942 + DL296116:25:00→19:27:00 6h 02m nonstop · 13:50:00→23:57:00 7h 07m 1 stop via MSPAxel-exclusive $485.752026-10-29T01:02:54Z
2026-11-17 → 2026-11-21Delta Air LinesDL5592 + DL2287 / DL78611:05:00→17:03:00 8h 58m 1 stop via JFK · 07:20:00→15:06:00 4h 46m nonstopAxel-exclusive $491.752026-10-29T01:02:54Z

Hotels in Seattle for these trips

Hotels: under a trip, hotels in Seattle for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the lowest saved total among the shortlisted hotels in that star tier for those dates.

All hotels in Seattle

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

2026-11-17 → 2026-11-21 · Axel-exclusive $488.75

  • Alaska Airlines AS3: DCA 2026-11-17 17:05:00 → SEA 2026-11-17 20:22:00; nonstop; 377 minutes. Local airport times.
  • Alaska Airlines AS4: SEA 2026-11-21 08:00:00 → DCA 2026-11-21 16:20:00; nonstop; 320 minutes. Local airport times.

2026-11-17 → 2026-11-21 · Axel-exclusive $511.75

  • Delta Air Lines DL786: DCA 2026-11-17 16:25:00 → SEA 2026-11-17 19:45:00; nonstop; 380 minutes. Local airport times.
  • Delta Air Lines DL786: SEA 2026-11-21 07:20:00 → DCA 2026-11-21 15:06:00; nonstop; 286 minutes. Local airport times.

2026-11-17 → 2026-11-21 · Axel-exclusive $448.50

  • American Airlines AA4720 / AS500: DCA 2026-11-17 14:25:00 → SEA 2026-11-17 20:11:00; 1 stop(s) via IND; 526 minutes. Local airport times.
    • AA4720: DCA 2026-11-17 14:25:00 → IND 2026-11-17 16:27:00; layover at IND: 100 minutes.
    • AS500: IND 2026-11-17 18:07:00 → SEA 2026-11-17 20:11:00.
  • American Airlines AA294 / AA461: SEA 2026-11-21 23:36:00 → DCA 2026-11-22 10:00:00; 1 stop(s) via ORD; 444 minutes. Local airport times.
    • AA294: SEA 2026-11-21 23:36:00 → ORD 2026-11-22 05:42:00; layover at ORD: 74 minutes.
    • AA461: ORD 2026-11-22 06:56:00 → DCA 2026-11-22 10:00:00.

2026-11-17 → 2026-11-21 · Axel-exclusive $489.25

  • United Airlines UA1793 / UA2099: DCA 2026-11-17 06:25:00 → SEA 2026-11-17 12:19:00; 1 stop(s) via ORD; 534 minutes. Local airport times.
    • UA1793: DCA 2026-11-17 06:25:00 → ORD 2026-11-17 07:43:00; layover at ORD: 102 minutes.
    • UA2099: ORD 2026-11-17 09:25:00 → SEA 2026-11-17 12:19:00.
  • Delta Air Lines DL786: SEA 2026-11-21 07:20:00 → DCA 2026-11-21 15:06:00; nonstop; 286 minutes. Local airport times.

2026-11-17 → 2026-11-21 · Axel-exclusive $437.00

  • Alaska Airlines AS9 / AS1432: DCA 2026-11-17 17:20:00 → SEA 2026-11-17 23:00:00; 1 stop(s) via PDX; 520 minutes. Local airport times.
    • AS9: DCA 2026-11-17 17:20:00 → PDX 2026-11-17 20:16:00; layover at PDX: 103 minutes.
    • AS1432: PDX 2026-11-17 21:59:00 → SEA 2026-11-17 23:00:00.
  • Alaska Airlines AS264 / AA4626: SEA 2026-11-21 22:59:00 → DCA 2026-11-22 09:20:00; 1 stop(s) via IND; 441 minutes. Local airport times.
    • AS264: SEA 2026-11-21 22:59:00 → IND 2026-11-22 06:03:00; layover at IND: 83 minutes.
    • AA4626: IND 2026-11-22 07:26:00 → DCA 2026-11-22 09:20:00.

2026-11-17 → 2026-11-21 · Axel-exclusive $459.50

  • Alaska Airlines AS3: DCA 2026-11-17 17:11:00 → SEA 2026-11-17 20:13:00; nonstop; 362 minutes. Local airport times.
  • Alaska Airlines AS264 / AA4626: SEA 2026-11-21 22:59:00 → DCA 2026-11-22 09:20:00; 1 stop(s) via IND; 441 minutes. Local airport times.
    • AS264: SEA 2026-11-21 22:59:00 → IND 2026-11-22 06:03:00; layover at IND: 83 minutes.
    • AA4626: IND 2026-11-22 07:26:00 → DCA 2026-11-22 09:20:00.

2026-11-17 → 2026-11-21 · Axel-exclusive $485.75

  • Delta Air Lines DL786: DCA 2026-11-17 16:25:00 → SEA 2026-11-17 19:27:00; nonstop; 362 minutes. Local airport times.
  • Delta Air Lines DL942 / DL2961: SEA 2026-11-21 13:50:00 → DCA 2026-11-21 23:57:00; 1 stop(s) via MSP; 427 minutes. Local airport times.
    • DL942: SEA 2026-11-21 13:50:00 → MSP 2026-11-21 19:11:00; layover at MSP: 74 minutes.
    • DL2961: MSP 2026-11-21 20:25:00 → DCA 2026-11-21 23:57:00.

2026-11-17 → 2026-11-21 · Axel-exclusive $491.75

  • Delta Air Lines DL5592 / DL2287: DCA 2026-11-17 11:05:00 → SEA 2026-11-17 17:03:00; 1 stop(s) via JFK; 538 minutes. Local airport times.
    • DL5592: DCA 2026-11-17 11:05:00 → JFK 2026-11-17 12:21:00; layover at JFK: 87 minutes.
    • DL2287: JFK 2026-11-17 13:48:00 → SEA 2026-11-17 17:03:00.
  • Delta Air Lines DL786: SEA 2026-11-21 07:20:00 → DCA 2026-11-21 15:06:00; nonstop; 286 minutes. Local airport times.

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

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For AI assistants

  • This page: Washington (DCA) to Seattle (SEA) · Nov 17, 2026 · return Nov 21, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued. Under a trip, hotels in Seattle for exactly those nights link to the hotel pages for 2 adults in 1 room. Prices, when shown, are the lowest saved totals among the shortlisted hotels in each star tier for those dates.
  • Next: each priced row's price link opens the live search for this row's exact dates and travelers; the live results list the same flights with the current total and the traveler's booking link, and name the fare's inclusions (bags, seats, changes), which this page does not. A changed price or flight shows there. Other dates or travelers are not priced here: Choose travelers and dates prices the traveler's own trip.
  • 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. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. 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.