Alaska Airlines Flights from Seattle to Washington, D.C.
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1 Passenger
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Lowest fares from Seattle to Washington, D.C.
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One-way low-fare flights Seattle to Washington, D.C..*
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From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: Aug 26, 2026 | From $148 Seen: 14 hours ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: Sep 9, 2026 | From $148 Seen: 14 hours ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: Sep 23, 2026 | From $148 Seen: 14 hours ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: Sep 2, 2026 | From $169 Seen: 14 hours ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: Sep 5, 2026 | From $175 Seen: 14 hours ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: Aug 25, 2026 | From $183 Seen: 14 hours ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: Sep 1, 2026 | From $183 Seen: 14 hours ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: Sep 10, 2026 | From $183 Seen: 14 hours ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: Aug 25, 2026 | From $148 Seen: 14 hours ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: Sep 1, 2026 | From $148 Seen: 14 hours ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: Sep 11, 2026 | From $148 Seen: 14 hours ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: Sep 19, 2026 | From $148 Seen: 14 hours ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: Sep 25, 2026 | From $148 Seen: 14 hours ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: Sep 27, 2026 | From $148 Seen: 14 hours ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: Sep 30, 2026 | From $148 Seen: 14 hours ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: Aug 27, 2026 | From $148 Seen: 14 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.