Dulles (IAD) to Seattle (SEA), Jan 15, 2027: from $128 one way

Dulles (IAD) to Seattle (SEA), Jan 15, 2027: from $128 one way on Axel, checked Oct 29, 2026. Lowest published fare: $128 one way, Axel-exclusive, Sun Country Airlines, 1 stop, Jan 15, 2027, 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 dates	Airline	Flights	Times, duration, stops	Total price	Price issued (UTC)
2027-01-15 · one way	Alaska Airlines	AS409	07:00:00→10:05:00 6h 05m nonstop	Axel-exclusive $175.75	2026-10-29T01:07:59Z
2027-01-15 · one way	Delta Air Lines	DL1015	07:00:00→10:10:00 6h 10m nonstop	Axel-exclusive $185.25	2026-10-29T01:07:59Z
2027-01-15 · one way	United Airlines	UA1128	17:55:00→21:02:00 6h 07m nonstop	Axel-exclusive $190.00	2026-10-29T01:07:59Z
2027-01-15 · one way	Sun Country Airlines	SY668 + SY285	12:44:00→17:17:00 7h 33m 1 stop via MSP	Axel-exclusive $128.25	2026-10-29T01:07:59Z
2027-01-15 · one way	Alaska Airlines	AS737	17:31:00→20:32:00 6h 01m nonstop	Axel-exclusive $175.75	2026-10-29T01:07:59Z
2027-01-15 · one way	United Airlines	UA2731	08:50:00→11:57:00 6h 07m nonstop	Axel-exclusive $190.00	2026-10-29T01:07:59Z
2027-01-15 · one way	United Airlines	UA565 + UA2099	06:10:00→12:19:00 9h 09m 1 stop via ORD	Axel-exclusive $171.00	2026-10-29T01:07:59Z
2027-01-15 · one way	United Airlines	UA792 + UA2302	08:15:00→13:35:00 8h 20m 1 stop via DEN	Axel-exclusive $171.00	2026-10-29T01:07:59Z
2027-01-15 · one way	Delta Air Lines	DL5511 + DL734	06:00:00→11:09:00 8h 09m 1 stop via DTW	Axel-exclusive $171.00	2026-10-29T01:07:59Z
2027-01-15 · one way	Delta Air Lines	DL432 + DL2995	07:00:00→12:36:00 8h 36m 1 stop via SLC	Axel-exclusive $171.00	2026-10-29T01:07:59Z
2027-01-15 · one way	United Airlines	UA1359 + UA1330	06:10:00→13:01:00 9h 51m 1 stop via EWR	Axel-exclusive $171.00	2026-10-29T01:07:59Z

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

2027-01-15 · one way · Axel-exclusive $175.75

Alaska Airlines AS409: IAD 2027-01-15 07:00:00 → SEA 2027-01-15 10:05:00; nonstop; 365 minutes. Local airport times.

2027-01-15 · one way · Axel-exclusive $185.25

Delta Air Lines DL1015: IAD 2027-01-15 07:00:00 → SEA 2027-01-15 10:10:00; nonstop; 370 minutes. Local airport times.

2027-01-15 · one way · Axel-exclusive $190.00

United Airlines UA1128: IAD 2027-01-15 17:55:00 → SEA 2027-01-15 21:02:00; nonstop; 367 minutes. Local airport times.

2027-01-15 · one way · Axel-exclusive $128.25

Sun Country Airlines SY668 / SY285: IAD 2027-01-15 12:44:00 → SEA 2027-01-15 17:17:00; 1 stop(s) via MSP; 453 minutes. Local airport times.
- SY668: IAD 2027-01-15 12:44:00 → MSP 2027-01-15 14:21:00; layover at MSP: 64 minutes.
- SY285: MSP 2027-01-15 15:25:00 → SEA 2027-01-15 17:17:00.

2027-01-15 · one way · Axel-exclusive $175.75

Alaska Airlines AS737: IAD 2027-01-15 17:31:00 → SEA 2027-01-15 20:32:00; nonstop; 361 minutes. Local airport times.

2027-01-15 · one way · Axel-exclusive $190.00

United Airlines UA2731: IAD 2027-01-15 08:50:00 → SEA 2027-01-15 11:57:00; nonstop; 367 minutes. Local airport times.

2027-01-15 · one way · Axel-exclusive $171.00

United Airlines UA565 / UA2099: IAD 2027-01-15 06:10:00 → SEA 2027-01-15 12:19:00; 1 stop(s) via ORD; 549 minutes. Local airport times.
- UA565: IAD 2027-01-15 06:10:00 → ORD 2027-01-15 07:32:00; layover at ORD: 113 minutes.
- UA2099: ORD 2027-01-15 09:25:00 → SEA 2027-01-15 12:19:00.

2027-01-15 · one way · Axel-exclusive $171.00

United Airlines UA792 / UA2302: IAD 2027-01-15 08:15:00 → SEA 2027-01-15 13:35:00; 1 stop(s) via DEN; 500 minutes. Local airport times.
- UA792: IAD 2027-01-15 08:15:00 → DEN 2027-01-15 10:27:00; layover at DEN: 63 minutes.
- UA2302: DEN 2027-01-15 11:30:00 → SEA 2027-01-15 13:35:00.

2027-01-15 · one way · Axel-exclusive $171.00

Delta Air Lines DL5511 / DL734: IAD 2027-01-15 06:00:00 → SEA 2027-01-15 11:09:00; 1 stop(s) via DTW; 489 minutes. Local airport times.
- DL5511: IAD 2027-01-15 06:00:00 → DTW 2027-01-15 07:46:00; layover at DTW: 69 minutes.
- DL734: DTW 2027-01-15 08:55:00 → SEA 2027-01-15 11:09:00.

2027-01-15 · one way · Axel-exclusive $171.00

Delta Air Lines DL432 / DL2995: IAD 2027-01-15 07:00:00 → SEA 2027-01-15 12:36:00; 1 stop(s) via SLC; 516 minutes. Local airport times.
- DL432: IAD 2027-01-15 07:00:00 → SLC 2027-01-15 09:54:00; layover at SLC: 81 minutes.
- DL2995: SLC 2027-01-15 11:15:00 → SEA 2027-01-15 12:36:00.

2027-01-15 · one way · Axel-exclusive $171.00

United Airlines UA1359 / UA1330: IAD 2027-01-15 06:10:00 → SEA 2027-01-15 13:01:00; 1 stop(s) via EWR; 591 minutes. Local airport times.
- UA1359: IAD 2027-01-15 06:10:00 → EWR 2027-01-15 07:28:00; layover at EWR: 132 minutes.
- UA1330: EWR 2027-01-15 09:40:00 → SEA 2027-01-15 13:01:00.

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