HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Santander

$1,201+ 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 7/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SDR
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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 June 12, 2025.

Round-trip from

$1,201
(Mytrip)
From Seattle/Tacoma Intl to Santander
Search Deals

Find flight deals from Seattle to Santander

Cheapest flights from Seattle to Santander
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 June 12, 2025.

This Mytrip deal was found by Cheapflights users on 6/10. 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.
Fri 7/253:45 pmSEA - SDR
3 stops31h 40mMultiple Airlines
Fri 8/19:20 amSDR - SEA
3 stops42h 54mMultiple Airlines
Deal found 6/10$1,201
This AranGrant deal was found by Cheapflights users on 6/9. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/253:13 pmSEA - SDR
2 stops20h 47mIberia
Fri 8/16:30 amSDR - SEA
2 stops20h 50mIberia
Deal found 6/9$3,843

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 June 12, 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

Fri 7/25

3:45 pm-8:25 am

3 stops31h 40m

Santander

Fri 8/1

9:20 am-7:14 pm

3 stops42h 54m

$1,201

SeattleSantander

SEA - SDR

SEASDR

Seattle/Tacoma Intl

Fri 7/25

3:13 pm-9:00 pm

2 stops20h 47m

Santander

Fri 8/1

6:30 am-6:20 pm

2 stops20h 50m

$3,843

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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).

Reviews of airlines servicing Santander

Get insights into the airlines that provide service to Santander. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Santander. Reviews last updated June 12, 2025.
Iberia
7.0
Good
2,776 reviews

Crew

7.7

Overall

7.0

Boarding

7.1

Comfort

6.8

Food

6.3

Entertainment

6.6

Reviews

1 / 20
6.0
Good

David,May 2025

JFK - MAD

Unfortunately carry on bag over head was full. I was seated 27J and had to place my carry on by seat 8 .. other then that it was a good flight
Iberia
7.0
Good
2,776 reviews
Iberia
7.0
Good
2,776 reviews

Crew

7.7

Overall

7.0

Boarding

7.1

Comfort

6.8

Food

6.3

Entertainment

6.6

Reviews

1 / 20
6.0
Good

David,May 2025

JFK - MAD

Unfortunately carry on bag over head was full. I was seated 27J and had to place my carry on by seat 8 .. other then that it was a good flight

Related info for your journey

Find useful and relevant information for your journey from Seattle to Santander. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Seattle to Santander that include hotel bookings?

    Yes. In addition to deals on Seattle to Santander flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Santander?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Santander.

  • Can I find deals for business class flights from Seattle to Santander?

    Yes. Cheapflights offers flight deals from Seattle to Santander by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Santander

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Bilbao flights
Portland to Bilbao flights
Pasco to Bilbao flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.