Alaska Airlines Flights from Seattle to Washington, D.C.
Lowest fares from Seattle to Washington, D.C.
One-way low-fare flights Seattle to Washington, D.C..*
From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: Nov 11, 2026 | From $117 Seen: 4 hours ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: Jul 15, 2026 | From $37 Seen: 7 hours ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: Jun 5, 2026 | From $158 Seen: 11 hours ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: Jun 4, 2026 | From $158 Seen: 11 hours ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: Sep 23, 2026 | From $158 Seen: 11 hours ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: May 16, 2026 | From $179 Seen: 11 hours ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: May 20, 2026 | From $179 Seen: 11 hours ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: May 28, 2026 | From $179 Seen: 11 hours ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: May 29, 2026 | From $179 Seen: 11 hours ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: Jun 4, 2026 | From $143 Seen: 11 hours ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: Sep 16, 2026 | From $143 Seen: 11 hours ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: Sep 30, 2026 | From $143 Seen: 11 hours ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: Sep 23, 2026 | From $143 Seen: 11 hours ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: Sep 29, 2026 | From $143 Seen: 11 hours ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: Jun 9, 2026 | From $143 Seen: 11 hours ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: Jun 5, 2026 | From $143 Seen: 11 hours ago |
*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.