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Seattle → Dulles

Nov 20, 2026 · one way

SEA → IAD1 adulteconomyOne way

11 flight options · 3 airlines

Nonstop flights

Fri, Nov 20 · One way

Alaska Airlines
8:30 amSEA
4h 58m
Nonstop
4:28 pmIAD

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

United Airlines
10:50 pmSEA
5h 1m
Nonstop
6:51 am+1IAD

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Delta Air Lines
4:30 pmSEA
4h 50m
Nonstop
12:20 am+1IAD

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Alaska Airlines
9:40 pmSEA
4h 55m
Nonstop
5:35 am+1IAD

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

United Airlines
8:09 amSEA
4h 59m
Nonstop
4:08 pmIAD

One-way total · 1 adult · Taxes included

One-stop flights

Fri, Nov 20 · One way

Alaska Airlines
12:30 amSEA
7h 53m
DFW · 1h 10m
11:23 amIAD

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

United Airlines
5:00 amSEA
7h 44m
DEN · 1h 39m
3:44 pmIAD

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

United Airlines
10:50 amSEA
7h 23m
ORD · 1h 10m
9:13 pmIAD

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Delta Air Lines
6:00 amSEA
7h 18m
DTW · 1h 33m
4:18 pmIAD

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Delta Air Lines
10:40 pmSEA
7h 29m
ATL · 1h 13m
9:09 am+1IAD

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Delta Air Lines
1:25 pmSEA
7h 22m
SLC · 1h 25m
11:47 pmIAD

One-way total · 1 adult · Taxes included

Make this trip yours

SEA ⇄ IAD

Economy

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

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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, 2026
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)
2026-11-20 · one wayAlaska AirlinesAS737$220.002026-10-29T01:15:29Z
2026-11-20 · one wayUnited AirlinesUA2645$225.002026-10-29T01:15:29Z
2026-11-20 · one wayDelta Air LinesDL541$230.002026-10-29T01:15:29Z
2026-11-20 · one wayAlaska AirlinesAS367$220.002026-10-29T01:15:29Z
2026-11-20 · one wayUnited AirlinesUA672$225.002026-10-29T01:15:29Z
2026-11-20 · one wayAlaska AirlinesAS424 + AA3320$205.002026-10-29T01:15:29Z
2026-11-20 · one wayUnited AirlinesUA2601 + UA2087$210.002026-10-29T01:15:29Z
2026-11-20 · one wayUnited AirlinesUA747 + UA2202$210.002026-10-29T01:15:29Z
2026-11-20 · one wayDelta Air LinesDL812 + DL5413$215.002026-10-29T01:15:29Z
2026-11-20 · one wayDelta Air LinesDL567 + DL1324$215.002026-10-29T01:15:29Z
2026-11-20 · one wayDelta Air LinesDL1120 + DL847$215.002026-10-29T01:15:29Z

2026-11-20 · one way · $220.00

  • Alaska Airlines AS737: SEA 2026-11-20 08:30:00 → IAD 2026-11-20 16:28:00; nonstop; 298 minutes. Local airport times.

2026-11-20 · one way · $225.00

  • United Airlines UA2645: SEA 2026-11-20 22:50:00 → IAD 2026-11-21 06:51:00; nonstop; 301 minutes. Local airport times.

2026-11-20 · one way · $230.00

  • Delta Air Lines DL541: SEA 2026-11-20 16:30:00 → IAD 2026-11-21 00:20:00; nonstop; 290 minutes. Local airport times.

2026-11-20 · one way · $220.00

  • Alaska Airlines AS367: SEA 2026-11-20 21:40:00 → IAD 2026-11-21 05:35:00; nonstop; 295 minutes. Local airport times.

2026-11-20 · one way · $225.00

  • United Airlines UA672: SEA 2026-11-20 08:09:00 → IAD 2026-11-20 16:08:00; nonstop; 299 minutes. Local airport times.

2026-11-20 · one way · $205.00

  • Alaska Airlines AS424 / AA3320: SEA 2026-11-20 00:30:00 → IAD 2026-11-20 11:23:00; 1 stop(s) via DFW; 473 minutes. Local airport times.
    • AS424: SEA 2026-11-20 00:30:00 → DFW 2026-11-20 06:20:00; layover at DFW: 70 minutes.
    • AA3320: DFW 2026-11-20 07:30:00 → IAD 2026-11-20 11:23:00.

2026-11-20 · one way · $210.00

  • United Airlines UA2601 / UA2087: SEA 2026-11-20 05:00:00 → IAD 2026-11-20 15:44:00; 1 stop(s) via DEN; 464 minutes. Local airport times.
    • UA2601: SEA 2026-11-20 05:00:00 → DEN 2026-11-20 08:41:00; layover at DEN: 99 minutes.
    • UA2087: DEN 2026-11-20 10:20:00 → IAD 2026-11-20 15:44:00.

2026-11-20 · one way · $210.00

  • United Airlines UA747 / UA2202: SEA 2026-11-20 10:50:00 → IAD 2026-11-20 21:13:00; 1 stop(s) via ORD; 443 minutes. Local airport times.
    • UA747: SEA 2026-11-20 10:50:00 → ORD 2026-11-20 17:00:00; layover at ORD: 70 minutes.
    • UA2202: ORD 2026-11-20 18:10:00 → IAD 2026-11-20 21:13:00.

2026-11-20 · one way · $215.00

  • Delta Air Lines DL812 / DL5413: SEA 2026-11-20 06:00:00 → IAD 2026-11-20 16:18:00; 1 stop(s) via DTW; 438 minutes. Local airport times.
    • DL812: SEA 2026-11-20 06:00:00 → DTW 2026-11-20 13:12:00; layover at DTW: 93 minutes.
    • DL5413: DTW 2026-11-20 14:45:00 → IAD 2026-11-20 16:18:00.

2026-11-20 · one way · $215.00

  • Delta Air Lines DL567 / DL1324: SEA 2026-11-20 22:40:00 → IAD 2026-11-21 09:09:00; 1 stop(s) via ATL; 449 minutes. Local airport times.
    • DL567: SEA 2026-11-20 22:40:00 → ATL 2026-11-21 06:12:00; layover at ATL: 73 minutes.
    • DL1324: ATL 2026-11-21 07:25:00 → IAD 2026-11-21 09:09:00.

2026-11-20 · one way · $215.00

  • Delta Air Lines DL1120 / DL847: SEA 2026-11-20 13:25:00 → IAD 2026-11-20 23:47:00; 1 stop(s) via SLC; 442 minutes. Local airport times.
    • DL1120: SEA 2026-11-20 13:25:00 → SLC 2026-11-20 16:26:00; layover at SLC: 85 minutes.
    • DL847: SLC 2026-11-20 17:51:00 → IAD 2026-11-20 23:47:00.

More dates for this route