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Washington → Seattle

Dec 16, 2026 · return Dec 30, 2026

DCA → SEA1 adulteconomyRound trip

9 flight options · 3 airlines

Nonstop flights

Wed, Dec 16 – Wed, Dec 30

Alaska Airlines
5:11 pmDCA
6h 2m
Nonstop
8:13 pmSEA
Alaska Airlines
8:00 amSEA
5h 5m
Nonstop
4:05 pmDCA

Round-trip total · 1 adult · Taxes included

Wed, Dec 16 – Wed, Dec 30

Delta Air Lines
4:25 pmDCA
6h 2m
Nonstop
7:27 pmSEA
Delta Air Lines
7:20 amSEA
4h 46m
Nonstop
3:06 pmDCA

Round-trip total · 1 adult · Taxes included

Wed, Dec 16 – Wed, Dec 30

Alaska Airlines
8:00 amDCA
5h 55m
Nonstop
10:55 amSEA
Alaska Airlines
8:00 amSEA
5h 5m
Nonstop
4:05 pmDCA

Round-trip total · 1 adult · Taxes included

One-stop flights

Wed, Dec 16 – Wed, Dec 30

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

Wed, Dec 16 – Wed, Dec 30

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

Wed, Dec 16 – Wed, Dec 30

Alaska Airlines
8:00 amDCA
6h 17m
Nonstop
11:17 amSEA
Alaska Airlines
10:59 pmSEA
7h 21m
IND · 1h 23m
9:20 am+1DCA

Round-trip total · 1 adult · Taxes included

Wed, Dec 16 – Wed, Dec 30

Alaska Airlines
5:20 pmDCA
8h 40m
PDX · 1h 43m
11:00 pmSEA
Alaska Airlines
8:00 amSEA
5h 5m
Nonstop
4:05 pmDCA

Round-trip total · 1 adult · Taxes included

Wed, Dec 16 – Wed, Dec 30

Delta Air Lines
4:25 pmDCA
6h 20m
Nonstop
7:45 pmSEA
Delta Air Lines
6:00 amSEA
7h 38m
DTW · 1h 54m
4:38 pmDCA

Round-trip total · 1 adult · Taxes included

Wed, Dec 16 – Wed, Dec 30

Delta Air Lines
9:45 amDCA
8h 10m
DTW · 1h 31m
2:55 pmSEA
Delta Air Lines
7:20 amSEA
4h 46m
Nonstop
3:06 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.

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  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
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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

More dates

All dates for this routeNov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 2026 · One way
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.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-16 → 2026-12-30Alaska AirlinesAS3 / AS4$499.382026-10-29T01:02:54Z
2026-12-16 → 2026-12-30Delta Air LinesDL786 / DL786$522.882026-10-29T01:02:54Z
2026-12-16 → 2026-12-30American AirlinesAA2476 + AA2398 / AA294 + AA461$458.252026-10-29T01:02:54Z
2026-12-16 → 2026-12-30Alaska AirlinesAS1 / AS4$499.382026-10-29T01:02:54Z
2026-12-16 → 2026-12-30American AirlinesAA4720 + AS500 / AA294 + AA461$458.252026-10-29T01:02:54Z
2026-12-16 → 2026-12-30Alaska AirlinesAS1 / AS264 + AA4626$469.002026-10-29T01:02:54Z
2026-12-16 → 2026-12-30Alaska AirlinesAS9 + AS1432 / AS4$476.882026-10-29T01:02:54Z
2026-12-16 → 2026-12-30Delta Air LinesDL786 / DL812 + DL1454$495.882026-10-29T01:02:54Z
2026-12-16 → 2026-12-30Delta Air LinesDL1558 + DL728 / DL786$502.882026-10-29T01:02:54Z

2026-12-16 → 2026-12-30 · $499.38

  • Alaska Airlines AS3: DCA 2026-12-16 17:11:00 → SEA 2026-12-16 20:13:00; nonstop; 362 minutes. Local airport times.
  • Alaska Airlines AS4: SEA 2026-12-30 08:00:00 → DCA 2026-12-30 16:05:00; nonstop; 305 minutes. Local airport times.

2026-12-16 → 2026-12-30 · $522.88

  • Delta Air Lines DL786: DCA 2026-12-16 16:25:00 → SEA 2026-12-16 19:27:00; nonstop; 362 minutes. Local airport times.
  • Delta Air Lines DL786: SEA 2026-12-30 07:20:00 → DCA 2026-12-30 15:06:00; nonstop; 286 minutes. Local airport times.

2026-12-16 → 2026-12-30 · $458.25

  • American Airlines AA2476 / AA2398: DCA 2026-12-16 08:43:00 → SEA 2026-12-16 14:25:00; 1 stop(s) via ORD; 522 minutes. Local airport times.
    • AA2476: DCA 2026-12-16 08:43:00 → ORD 2026-12-16 10:15:00; layover at ORD: 75 minutes.
    • AA2398: ORD 2026-12-16 11:30:00 → SEA 2026-12-16 14:25:00.
  • American Airlines AA294 / AA461: SEA 2026-12-30 23:36:00 → DCA 2026-12-31 10:00:00; 1 stop(s) via ORD; 444 minutes. Local airport times.
    • AA294: SEA 2026-12-30 23:36:00 → ORD 2026-12-31 05:42:00; layover at ORD: 74 minutes.
    • AA461: ORD 2026-12-31 06:56:00 → DCA 2026-12-31 10:00:00.

2026-12-16 → 2026-12-30 · $499.38

  • Alaska Airlines AS1: DCA 2026-12-16 08:00:00 → SEA 2026-12-16 10:55:00; nonstop; 355 minutes. Local airport times.
  • Alaska Airlines AS4: SEA 2026-12-30 08:00:00 → DCA 2026-12-30 16:05:00; nonstop; 305 minutes. Local airport times.

2026-12-16 → 2026-12-30 · $458.25

  • American Airlines AA4720 / AS500: DCA 2026-12-16 14:25:00 → SEA 2026-12-16 20:11:00; 1 stop(s) via IND; 526 minutes. Local airport times.
    • AA4720: DCA 2026-12-16 14:25:00 → IND 2026-12-16 16:27:00; layover at IND: 100 minutes.
    • AS500: IND 2026-12-16 18:07:00 → SEA 2026-12-16 20:11:00.
  • American Airlines AA294 / AA461: SEA 2026-12-30 23:36:00 → DCA 2026-12-31 10:00:00; 1 stop(s) via ORD; 444 minutes. Local airport times.
    • AA294: SEA 2026-12-30 23:36:00 → ORD 2026-12-31 05:42:00; layover at ORD: 74 minutes.
    • AA461: ORD 2026-12-31 06:56:00 → DCA 2026-12-31 10:00:00.

2026-12-16 → 2026-12-30 · $469.00

  • Alaska Airlines AS1: DCA 2026-12-16 08:00:00 → SEA 2026-12-16 11:17:00; nonstop; 377 minutes. Local airport times.
  • Alaska Airlines AS264 / AA4626: SEA 2026-12-30 22:59:00 → DCA 2026-12-31 09:20:00; 1 stop(s) via IND; 441 minutes. Local airport times.
    • AS264: SEA 2026-12-30 22:59:00 → IND 2026-12-31 06:03:00; layover at IND: 83 minutes.
    • AA4626: IND 2026-12-31 07:26:00 → DCA 2026-12-31 09:20:00.

2026-12-16 → 2026-12-30 · $476.88

  • Alaska Airlines AS9 / AS1432: DCA 2026-12-16 17:20:00 → SEA 2026-12-16 23:00:00; 1 stop(s) via PDX; 520 minutes. Local airport times.
    • AS9: DCA 2026-12-16 17:20:00 → PDX 2026-12-16 20:16:00; layover at PDX: 103 minutes.
    • AS1432: PDX 2026-12-16 21:59:00 → SEA 2026-12-16 23:00:00.
  • Alaska Airlines AS4: SEA 2026-12-30 08:00:00 → DCA 2026-12-30 16:05:00; nonstop; 305 minutes. Local airport times.

2026-12-16 → 2026-12-30 · $495.88

  • Delta Air Lines DL786: DCA 2026-12-16 16:25:00 → SEA 2026-12-16 19:45:00; nonstop; 380 minutes. Local airport times.
  • Delta Air Lines DL812 / DL1454: SEA 2026-12-30 06:00:00 → DCA 2026-12-30 16:38:00; 1 stop(s) via DTW; 458 minutes. Local airport times.
    • DL812: SEA 2026-12-30 06:00:00 → DTW 2026-12-30 13:12:00; layover at DTW: 114 minutes.
    • DL1454: DTW 2026-12-30 15:06:00 → DCA 2026-12-30 16:38:00.

2026-12-16 → 2026-12-30 · $502.88

  • Delta Air Lines DL1558 / DL728: DCA 2026-12-16 09:45:00 → SEA 2026-12-16 14:55:00; 1 stop(s) via DTW; 490 minutes. Local airport times.
    • DL1558: DCA 2026-12-16 09:45:00 → DTW 2026-12-16 11:22:00; layover at DTW: 91 minutes.
    • DL728: DTW 2026-12-16 12:53:00 → SEA 2026-12-16 14:55:00.
  • Delta Air Lines DL786: SEA 2026-12-30 07:20:00 → DCA 2026-12-30 15:06:00; nonstop; 286 minutes. Local airport times.

More dates for this route