Seattle to Santander (SDR) flight deals
Compare Seattle to Santander (SDR) 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 | $893–$3,243 | $945–$3,430 |
| December 2026 | 1 adult · 7 days | $796–$1,306 | $840–$1,375 |
Flights from Seattle (SEA) · Seattle to Europe flight deals · Seattle to Spain and Canary Islands flight deals
Fares observed October 2, 2026. USD for the travelers shown. Search a trip for current prices.
November 2026
1 adult · Economy · Round-trip totals
| Travel dates | Flights (out / return) | Axel | Airline fare | Search |
|---|---|---|---|---|
| Nov 10–17, 2026 · 7 days | 2 stops / 2 stops · 18h 30m / 19h 20m | $1,286 · Save $69 | $1,355 | Check Axel prices |
| Nov 24–Dec 1, 2026 · 7 days | 2 stops / 2 stops · 18h 30m / 22h 51m | $893 · Save $52 | $945 | Check Axel prices |
| Nov 24–Dec 1, 2026 · 7 days | 2 stops / 2 stops · 18h 30m / 19h 16m | $3,243 · Save $187 | $3,430 | Check Axel prices |
December 2026
1 adult · Economy · Round-trip totals
| Travel dates | Flights (out / return) | Axel | Airline fare | Search |
|---|---|---|---|---|
| Dec 8–15, 2026 · 7 days | 2 stops / 2 stops · 18h 30m / 21h 33m | $796 · Save $44 | $840 | Check Axel prices |
| Dec 8–15, 2026 · 7 days | 2 stops / 2 stops · 18h 30m / 19h 20m | $994 · Save $55 | $1,049 | Check Axel prices |
| Dec 22–29, 2026 · 7 days | 2 stops / 2 stops · 22h 30m / 21h 12m | $1,306 · Save $69 | $1,375 | 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: Seattle to Santander (SDR) flight deals. Seattle to Santander (SDR) flight deals. Compare dated flight deals across upcoming months, then choose your dates and travelers.
- Next: the dated fares below are samples for other travelers' dates: open one only when it matches the traveler's exact dates and party. Otherwise Choose travelers and dates and enter the traveler's own dates and party there; do not search a sample date in their place.
- 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 your tool can open an address you write yourself, any route works in one step:
https://helloaxel.com/en/flights/choose/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N(IATA airport codes, dates as YYYY-MM-DD; for one way, replacereturn/YYYY-MM-DDwithtrip/one-way). - If a link can no longer be opened: search for "Axel Seattle to Santander (SDR) 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-seattle-sea-to-santander-sdr; an address the traveler opens always works.
- Sharing with the traveler: share the address of the step you reached. Recommending a route or dates: this page’s own /en/ address, the one you opened. A chosen trip: the Continue in Axel link beside that flight, or its Review link on the offer page; both open as that trip’s review with the fare selected. Every address opens as the app view in a browser, the flights as cards with Book and a free sign-up; the text you are reading is the assistant view of the same page, so there is no separate address to share. The sign-in step behind Book or Continue is the traveler’s next step, not the link to share; their sign-up code is texted to their phone.