Alaska Airlines Flights from Washington, D.C. to Seattle
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Lowest fares from Washington, D.C. to Seattle
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One-way low-fare flights Washington, D.C. to Seattle.*
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From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Washington, D.C. (IAD) | Seattle (SEA) | One-way | Saver | Depart: Jun 11, 2025 | From $129 Seen: 1 day ago | |
| Washington, D.C. (IAD) | Seattle (SEA) | One-way | Saver | Depart: Jun 7, 2025 | From $129 Seen: 3 hours ago | |
| Washington, D.C. (IAD) | Seattle (SEA) | One-way | Saver | Depart: May 31, 2025 | From $129 Seen: 3 hours ago | |
| Washington, D.C. (IAD) | Seattle (SEA) | One-way | Saver | Depart: Jun 3, 2025 | From $129 Seen: 1 day ago | |
| Washington, D.C. (IAD) | Seattle (SEA) | One-way | Saver | Depart: May 27, 2025 | From $129 Seen: 23 hours ago | |
| Washington, D.C. (IAD) | Seattle (SEA) | One-way | Saver | Depart: Jun 4, 2025 | From $129 Seen: 22 hours ago | |
| Washington, D.C. (IAD) | Seattle (SEA) | One-way | Saver | Depart: Jun 10, 2025 | From $138 Seen: 1 day ago | |
| Washington, D.C. (IAD) | Seattle (SEA) | One-way | Saver | Depart: May 15, 2025 | From $144 Seen: 18 hours ago | |
| Washington, D.C. (DCA) | Seattle (SEA) | One-way | Saver | Depart: May 28, 2025 | From $129 Seen: 1 day ago | |
| Washington, D.C. (DCA) | Seattle (SEA) | One-way | Saver | Depart: May 27, 2025 | From $129 Seen: 1 day ago | |
| Washington, D.C. (DCA) | Seattle (SEA) | One-way | Saver | Depart: Jun 3, 2025 | From $129 Seen: 3 hours ago | |
| Washington, D.C. (DCA) | Seattle (SEA) | One-way | Saver | Depart: May 24, 2025 | From $129 Seen: 1 day ago | |
| Washington, D.C. (DCA) | Seattle (SEA) | One-way | Saver | Depart: Jun 4, 2025 | From $129 Seen: 1 day ago | |
| Washington, D.C. (DCA) | Seattle (SEA) | One-way | Saver | Depart: Jun 10, 2025 | From $158 Seen: 4 hours ago | |
| Washington, D.C. (DCA) | Seattle (SEA) | One-way | Saver | Depart: May 30, 2025 | From $169 Seen: 1 day ago | |
| Washington, D.C. (DCA) | Seattle (SEA) | One-way | Saver | Depart: Aug 23, 2025 | From $169 Seen: 2 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.
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