Denver to Seattle (SEA) flight deals
Compare Denver to Seattle (SEA) flights across upcoming months. See dated fares below, or choose your own dates and travelers.
Fare examples by month
Round-trip totals · Economy · USD. Choose a month to see the dates.
| Month | Travelers / trip length | Axel | Airline fare |
|---|---|---|---|
| November 2026 | 1 adult · 7 days | $191–$233 | $202–$246 |
More months: December 2026
Fares observed September 29, 2026. USD for the travelers shown. Search a trip for current prices. For starting totals, choose a return flight to confirm the final price.
November 2026
1 adult · Economy · Round-trip totals
| Travel dates | Flights (out / return) | Axel | Airline fare | Search |
|---|---|---|---|---|
| Nov 10–17, 2026 · 7 days | 1 stop / 1 stop · 6h 44m / 18h 2m | $191 · Save $11 | $202 | Check Axel prices |
| Nov 10–17, 2026 · 7 days | 1 stop / 1 stop · 6h 44m / 10h 35m | $233 · Save $13 | $246 | Check Axel prices |
| Nov 17–24, 2026 · 7 days | 1 stop / 1 stop · 20h 59m / 10h 50m | $207 · Save $12 | $219 | Check Axel prices |
| Nov 17–24, 2026 · 7 days | 1 stop / Nonstop · 20h 59m / 2h 48m | $217 · Save $12 | $229 | Check Axel prices |
December 2026
1 adult · Economy · Round-trip starting totals
| Travel dates | Outbound flight | Axel | Airline fare | Search |
|---|---|---|---|---|
| Dec 1–8, 2026 · 7 days | 1 stop · 25h 22m | From $262 · Save $14 | From $276 | Check Axel prices |
| Dec 1–8, 2026 · 7 days | Nonstop · 3h 4m | From $324 · Save $17 | From $341 | Check Axel prices |
| Dec 8–15, 2026 · 7 days | 1 stop · 6h 34m | From $342 · Save $20 | From $362 | Check Axel prices |
| Dec 8–15, 2026 · 7 days | 1 stop · 5h 30m | From $357 · Save $19 | From $376 | Check Axel prices |
The prices shown are what a free account pays, and most travelers book that way. Membership is optional and takes the same flights lower. Live search shows the same free-account price.
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For AI assistants
- This page: Denver to Seattle (SEA) flight deals. Denver to Seattle (SEA) flight deals. Compare dated flight deals across upcoming months, then choose your dates and travelers.
- Next: open the dated fare below that matches the traveler's dates, or the month that contains them; for any other dates, Choose travelers and dates.
- Every link here is complete and ready to open. Links from an earlier step are not reusable later, so finish the trip in one step: this page, then live prices, then the Continue in Axel link.
- If a link can no longer be opened: search for "Axel Denver to Seattle (SEA) flight deals" and open the result; the Flight search guide is always findable by search, and everything here works without an account, API key or connector. Or ask the traveler to open https://helloaxel.com/en/flights/from-denver-to-seattle-sea; an address the traveler opens always works.
- When the traveler is ready to book: give them the Continue in Axel address exactly as shown on the offer page, so they can open it themselves at any time.