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Route overview: Seattle to Dulles (IAD) flight deals

Seattle (SEA) to Dulles (IAD), Jan 11–18, 2027: from $394 round trip

Seattle (SEA) to Dulles (IAD), Jan 11–18, 2027: from $394 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $394 round trip, Axel-exclusive, Alaska Airlines, 1 stop, Jan 11–18, 2027, 1 adult, economy, checked Oct 29, 2026.

SEA → IAD1 adulteconomyRound trip

11 flight options · 3 airlines

Nonstop flights

Mon, Jan 11 – Mon, Jan 18

Alaska Airlines
8:30 amSEA
4h 58m
Nonstop
4:28 pmIAD
Alaska Airlines
5:31 pmIAD
6h 1m
Nonstop
8:32 pmSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Jan 11 – Mon, Jan 18

United Airlines
8:09 amSEA
4h 59m
Nonstop
4:08 pmIAD
United Airlines
8:50 amIAD
6h 7m
Nonstop
11:57 amSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Jan 11 – Mon, Jan 18

Delta Air Lines
4:30 pmSEA
5h 1m
Nonstop
12:31 am+1IAD
Delta Air Lines
7:00 amIAD
6h 10m
Nonstop
10:10 amSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Jan 11 – Mon, Jan 18

Alaska Airlines
9:45 pmSEA
5h
Nonstop
5:45 am+1IAD
Alaska Airlines
5:31 pmIAD
6h 1m
Nonstop
8:32 pmSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Jan 11 – Mon, Jan 18

United Airlines
10:50 pmSEA
5h 1m
Nonstop
6:51 am+1IAD
United Airlines
8:50 amIAD
6h 7m
Nonstop
11:57 amSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

One-stop flights

Mon, Jan 11 – Mon, Jan 18

Alaska Airlines
12:30 amSEA
7h 53m
DFW · 1h 10m
11:23 amIAD
Alaska Airlines
5:31 pmIAD
6h 1m
Nonstop
8:32 pmSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Jan 11 – Mon, Jan 18

United Airlines
5:00 amSEA
7h 44m
DEN · 1h 39m
3:44 pmIAD
United Airlines
8:50 amIAD
6h 7m
Nonstop
11:57 amSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Jan 11 – Mon, Jan 18

Delta Air Lines
6:00 amSEA
7h 18m
DTW · 1h 33m
4:18 pmIAD
Delta Air Lines
7:00 amIAD
6h 10m
Nonstop
10:10 amSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Jan 11 – Mon, Jan 18

Delta Air Lines
1:25 pmSEA
7h 22m
SLC · 1h 25m
11:47 pmIAD
Delta Air Lines
7:00 amIAD
6h 10m
Nonstop
10:10 amSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Jan 11 – Mon, Jan 18

Delta Air Lines
4:30 pmSEA
4h 50m
Nonstop
12:20 am+1IAD
Delta Air Lines
6:00 amIAD
8h 9m
DTW · 1h 9m
11:09 amSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Jan 11 – Mon, Jan 18

Delta Air Lines
10:40 pmSEA
7h 29m
ATL · 1h 13m
9:09 am+1IAD
Delta Air Lines
7:00 amIAD
6h 10m
Nonstop
10:10 amSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Hotels for these nights (Jan 11–18, 2027 · 7 nights · 2 adults, 1 room): 3★ Mint House Washington DC Downtown by Kasa · 4★ Coda on Half, a Placemakr Experience - Navy Yard · 5★ Conrad Washington, DC

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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Explore this route

All dates for this routeJan 10, 2027 · Return optionsJan 12, 2027 · Return optionsHotels in Washington, DC with Axel
For AI assistants: every fare, every link, instructions

Seattle (SEA) to Dulles (IAD), Jan 11–18, 2027: from $394 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $394 round trip, Axel-exclusive, Alaska Airlines, 1 stop, Jan 11–18, 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 datesAirlineFlightsTimes, duration, stopsTotal pricePrice issued (UTC)
2027-01-11 → 2027-01-18Alaska AirlinesAS737 / AS73708:30:00→16:28:00 4h 58m nonstop · 17:31:00→20:32:00 6h 01m nonstopAxel-exclusive $408.502026-10-29T01:15:29Z
2027-01-11 → 2027-01-18United AirlinesUA1348 / UA273108:09:00→16:08:00 4h 59m nonstop · 08:50:00→11:57:00 6h 07m nonstopAxel-exclusive $418.002026-10-29T01:15:29Z
2027-01-11 → 2027-01-18Delta Air LinesDL541 / DL101516:30:00→00:31:00 5h 01m nonstop · 07:00:00→10:10:00 6h 10m nonstopAxel-exclusive $427.502026-10-29T01:15:29Z
2027-01-11 → 2027-01-18Alaska AirlinesAS367 / AS73721:45:00→05:45:00 5h 00m nonstop · 17:31:00→20:32:00 6h 01m nonstopAxel-exclusive $408.502026-10-29T01:15:29Z
2027-01-11 → 2027-01-18United AirlinesUA2645 / UA273122:50:00→06:51:00 5h 01m nonstop · 08:50:00→11:57:00 6h 07m nonstopAxel-exclusive $418.002026-10-29T01:15:29Z
2027-01-11 → 2027-01-18Alaska AirlinesAS424 + AA3320 / AS73700:30:00→11:23:00 7h 53m 1 stop via DFW · 17:31:00→20:32:00 6h 01m nonstopAxel-exclusive $394.252026-10-29T01:15:29Z
2027-01-11 → 2027-01-18United AirlinesUA2601 + UA2087 / UA273105:00:00→15:44:00 7h 44m 1 stop via DEN · 08:50:00→11:57:00 6h 07m nonstopAxel-exclusive $403.752026-10-29T01:15:29Z
2027-01-11 → 2027-01-18Delta Air LinesDL812 + DL5413 / DL101506:00:00→16:18:00 7h 18m 1 stop via DTW · 07:00:00→10:10:00 6h 10m nonstopAxel-exclusive $413.252026-10-29T01:15:29Z
2027-01-11 → 2027-01-18Delta Air LinesDL1120 + DL847 / DL101513:25:00→23:47:00 7h 22m 1 stop via SLC · 07:00:00→10:10:00 6h 10m nonstopAxel-exclusive $413.252026-10-29T01:15:29Z
2027-01-11 → 2027-01-18Delta Air LinesDL541 / DL5511 + DL73416:30:00→00:20:00 4h 50m nonstop · 06:00:00→11:09:00 8h 09m 1 stop via DTWAxel-exclusive $413.252026-10-29T01:15:29Z
2027-01-11 → 2027-01-18Delta Air LinesDL567 + DL1324 / DL101522:40:00→09:09:00 7h 29m 1 stop via ATL · 07:00:00→10:10:00 6h 10m nonstopAxel-exclusive $413.252026-10-29T01:15:29Z

Hotels in Washington, DC for these trips

Hotels: under a trip, hotels in Washington, DC 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 Washington, DC

Route overview: Seattle to Dulles (IAD) flight deals

2027-01-11 → 2027-01-18 · Axel-exclusive $408.50

  • Alaska Airlines AS737: SEA 2027-01-11 08:30:00 → IAD 2027-01-11 16:28:00; nonstop; 298 minutes. Local airport times.
  • Alaska Airlines AS737: IAD 2027-01-18 17:31:00 → SEA 2027-01-18 20:32:00; nonstop; 361 minutes. Local airport times.

2027-01-11 → 2027-01-18 · Axel-exclusive $418.00

  • United Airlines UA1348: SEA 2027-01-11 08:09:00 → IAD 2027-01-11 16:08:00; nonstop; 299 minutes. Local airport times.
  • United Airlines UA2731: IAD 2027-01-18 08:50:00 → SEA 2027-01-18 11:57:00; nonstop; 367 minutes. Local airport times.

2027-01-11 → 2027-01-18 · Axel-exclusive $427.50

  • Delta Air Lines DL541: SEA 2027-01-11 16:30:00 → IAD 2027-01-12 00:31:00; nonstop; 301 minutes. Local airport times.
  • Delta Air Lines DL1015: IAD 2027-01-18 07:00:00 → SEA 2027-01-18 10:10:00; nonstop; 370 minutes. Local airport times.

2027-01-11 → 2027-01-18 · Axel-exclusive $408.50

  • Alaska Airlines AS367: SEA 2027-01-11 21:45:00 → IAD 2027-01-12 05:45:00; nonstop; 300 minutes. Local airport times.
  • Alaska Airlines AS737: IAD 2027-01-18 17:31:00 → SEA 2027-01-18 20:32:00; nonstop; 361 minutes. Local airport times.

2027-01-11 → 2027-01-18 · Axel-exclusive $418.00

  • United Airlines UA2645: SEA 2027-01-11 22:50:00 → IAD 2027-01-12 06:51:00; nonstop; 301 minutes. Local airport times.
  • United Airlines UA2731: IAD 2027-01-18 08:50:00 → SEA 2027-01-18 11:57:00; nonstop; 367 minutes. Local airport times.

2027-01-11 → 2027-01-18 · Axel-exclusive $394.25

  • Alaska Airlines AS424 / AA3320: SEA 2027-01-11 00:30:00 → IAD 2027-01-11 11:23:00; 1 stop(s) via DFW; 473 minutes. Local airport times.
    • AS424: SEA 2027-01-11 00:30:00 → DFW 2027-01-11 06:20:00; layover at DFW: 70 minutes.
    • AA3320: DFW 2027-01-11 07:30:00 → IAD 2027-01-11 11:23:00.
  • Alaska Airlines AS737: IAD 2027-01-18 17:31:00 → SEA 2027-01-18 20:32:00; nonstop; 361 minutes. Local airport times.

2027-01-11 → 2027-01-18 · Axel-exclusive $403.75

  • United Airlines UA2601 / UA2087: SEA 2027-01-11 05:00:00 → IAD 2027-01-11 15:44:00; 1 stop(s) via DEN; 464 minutes. Local airport times.
    • UA2601: SEA 2027-01-11 05:00:00 → DEN 2027-01-11 08:41:00; layover at DEN: 99 minutes.
    • UA2087: DEN 2027-01-11 10:20:00 → IAD 2027-01-11 15:44:00.
  • United Airlines UA2731: IAD 2027-01-18 08:50:00 → SEA 2027-01-18 11:57:00; nonstop; 367 minutes. Local airport times.

2027-01-11 → 2027-01-18 · Axel-exclusive $413.25

  • Delta Air Lines DL812 / DL5413: SEA 2027-01-11 06:00:00 → IAD 2027-01-11 16:18:00; 1 stop(s) via DTW; 438 minutes. Local airport times.
    • DL812: SEA 2027-01-11 06:00:00 → DTW 2027-01-11 13:12:00; layover at DTW: 93 minutes.
    • DL5413: DTW 2027-01-11 14:45:00 → IAD 2027-01-11 16:18:00.
  • Delta Air Lines DL1015: IAD 2027-01-18 07:00:00 → SEA 2027-01-18 10:10:00; nonstop; 370 minutes. Local airport times.

2027-01-11 → 2027-01-18 · Axel-exclusive $413.25

  • Delta Air Lines DL1120 / DL847: SEA 2027-01-11 13:25:00 → IAD 2027-01-11 23:47:00; 1 stop(s) via SLC; 442 minutes. Local airport times.
    • DL1120: SEA 2027-01-11 13:25:00 → SLC 2027-01-11 16:26:00; layover at SLC: 85 minutes.
    • DL847: SLC 2027-01-11 17:51:00 → IAD 2027-01-11 23:47:00.
  • Delta Air Lines DL1015: IAD 2027-01-18 07:00:00 → SEA 2027-01-18 10:10:00; nonstop; 370 minutes. Local airport times.

2027-01-11 → 2027-01-18 · Axel-exclusive $413.25

  • Delta Air Lines DL541: SEA 2027-01-11 16:30:00 → IAD 2027-01-12 00:20:00; nonstop; 290 minutes. Local airport times.
  • Delta Air Lines DL5511 / DL734: IAD 2027-01-18 06:00:00 → SEA 2027-01-18 11:09:00; 1 stop(s) via DTW; 489 minutes. Local airport times.
    • DL5511: IAD 2027-01-18 06:00:00 → DTW 2027-01-18 07:46:00; layover at DTW: 69 minutes.
    • DL734: DTW 2027-01-18 08:55:00 → SEA 2027-01-18 11:09:00.

2027-01-11 → 2027-01-18 · Axel-exclusive $413.25

  • Delta Air Lines DL567 / DL1324: SEA 2027-01-11 22:40:00 → IAD 2027-01-12 09:09:00; 1 stop(s) via ATL; 449 minutes. Local airport times.
    • DL567: SEA 2027-01-11 22:40:00 → ATL 2027-01-12 06:12:00; layover at ATL: 73 minutes.
    • DL1324: ATL 2027-01-12 07:25:00 → IAD 2027-01-12 09:09:00.
  • Delta Air Lines DL1015: IAD 2027-01-18 07:00:00 → SEA 2027-01-18 10:10:00; nonstop; 370 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: Seattle (SEA) to Dulles (IAD) · Jan 11, 2027 · return Jan 18, 2027: 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 Washington, DC 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 Seattle to Dulles (IAD) 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.