Alaska Airlines Flights from Seattle to Washington, D.C.
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. (IAD) | One-way | Saver | Depart: May 11, 2025 | From $144 Seen: 1 day ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: May 3, 2025 | From $144 Seen: 21 hours ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: May 10, 2025 | From $144 Seen: 8 hours ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: May 1, 2025 | From $144 Seen: 7 hours ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: May 12, 2025 | From $144 Seen: 6 hours ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: May 6, 2025 | From $144 Seen: 10 hours ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: May 21, 2025 | From $144 Seen: 1 day ago | |
| Seattle (SEA) | Washington, D.C. (IAD) | One-way | Saver | Depart: May 13, 2025 | From $144 Seen: 10 hours ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: May 2, 2025 | From $144 Seen: 6 hours ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: May 10, 2025 | From $144 Seen: 1 hour ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: May 13, 2025 | From $144 Seen: 23 hours ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: May 3, 2025 | From $144 Seen: 9 hours ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: May 7, 2025 | From $144 Seen: 4 hours ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: May 21, 2025 | From $144 Seen: 2 hours ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: Apr 30, 2025 | From $144 Seen: 1 hour ago | |
| Seattle (SEA) | Washington, D.C. (DCA) | One-way | Saver | Depart: May 28, 2025 | From $149 Seen: 20 hours ago |
*Prices have been available for one-way trips within the last 48 hours and may not be currently available. Fares listed may be Saver fares which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.