$829+ Cheap flights from Seattle (SEA) to Santander (SDR)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SDR
Apr 5 — Apr 121
1 adult, Economy
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Find cheap flights from Seattle to Santander with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Santander
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Santander (SDR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 31, 2025.
Most accurate provider | Expedia 1 star |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $829 (Mytrip) |
Find flight deals from Seattle to Santander
Cheapest flights from Seattle to SantanderExplore the most affordable flight options available from Seattle to Santander. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 31, 2025.
Explore the most affordable flight options available from Seattle to Santander. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 31, 2025.
This Mytrip deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/146:50 pmSEA - SDR
3 stops29h 05mMultiple Airlines
Wed 5/219:30 amSDR - SEA
3 stops35h 55mMultiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$829
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Santander that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 31, 2025.
Use the filters below to find and compare flights from Seattle to Santander that are best for you.
Fly from
Seattle
Fly to
Santander
Route
Depart
Return
Price
SeattleSantander
SEA - SDR
SEASDR
Seattle/Tacoma Intl
Wed 5/14
6:50 pm-8:55 am
3 stops29h 05m
Santander
Wed 5/21
9:30 am-12:25 pm
3 stops35h 55m
$829
SeattleSantander
SEA - SDR
SEASDR
Seattle/Tacoma Intl
Fri 6/6
1:29 pm-5:05 pm
2 stops18h 36m
$1,082
- Most accurate provider: When it comes to deals on Seattle-Santander flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Seattle-Santander flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from Seattle-Santander flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Santander flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Santander flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Santander
Have a flexible travel schedule? Discover the best time to fly to Santander from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Santander
Rainfall in Santander by month
Plan your trip to Santander by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Santander ranges from 1.6 - 5.1 inches per month. November is typically the wettest month, when rainfall can reach 5.1 in. July is typically the driest time to visit Santander when rainfall is around 1.6 in.
Temperature in Santander by month
Plan your trip to Santander by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Santander, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 50.0 F).