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Cheap flights from Seattle to Santander from $1,015

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Santander departing on 9/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Seattle to Santander

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
3:42 pm - 9:00 pm
SEA
-
SDR
44h 18m
2 stops
British Airways Logo
6:30 am - 4:42 pm
SDR
-
SEA
43h 12m
2 stops
$1,015British Airways
Wed, Sep 9 - Wed, Sep 16
Iberia Logo
6:50 pm - 3:35 pm
SEA
-
SDR
35h 45m
2 stops
Iberia Logo
6:30 am - 11:51 pm
SDR
-
SEA
26h 21m
2 stops
$1,045Iberia
Sun, Jan 17 - Thu, Jan 21
Iberia Logo
1:34 pm - 5:00 pm
SEA
-
SDR
18h 26m
2 stops
Iberia Logo
6:30 am - 9:36 pm
SDR
-
SEA
24h 06m
2 stops
$1,049Iberia
Sun, Sep 6 - Mon, Sep 21
Multiple Airlines Logo
5:50 am - 6:10 pm
SEA
-
SDR
27h 20m
3 stops
Multiple Airlines Logo
8:50 pm - 5:10 pm
SDR
-
SEA
29h 20m
2 stops
$1,155Multiple Airlines
Wed, Sep 9 - Wed, Sep 16
Multiple Airlines Logo
5:50 am - 6:10 pm
SEA
-
SDR
27h 20m
3 stops
Multiple Airlines Logo
1:20 pm - 4:00 pm
SDR
-
SEA
35h 40m
3 stops
$1,565Multiple Airlines
Wed, Sep 9 - Wed, Sep 16
British Airways Logo
10:19 am - 9:50 pm
SEA
-
SDR
26h 31m
2 stops
British Airways Logo
6:30 am - 12:11 am
SDR
-
SEA
26h 41m
2 stops
$1,660British Airways
Sun, Sep 6 - Mon, Sep 21
Iberia Logo
11:15 am - 5:00 pm
SEA
-
SDR
20h 45m
2 stops
Iberia Logo
3:10 pm - 11:35 am
SDR
-
SEA
29h 25m
2 stops
$1,686Iberia
Sun, Aug 9 - Sat, Aug 15
Iberia Logo
8:20 pm - 5:00 pm
SEA
-
SDR
35h 40m
2 stops
Iberia Logo
3:10 pm - 11:35 am
SDR
-
SEA
29h 25m
2 stops
$1,687Iberia
Sun, Aug 9 - Sat, Aug 15
Iberia Logo
8:20 pm - 9:40 am
SEA
-
SDR
28h 20m
2 stops
Iberia Logo
9:35 pm - 5:10 pm
SDR
-
SEA
28h 35m
2 stops
$1,716Iberia
Sun, Aug 9 - Sat, Aug 15
Multiple Airlines Logo
9:40 pm - 10:45 am
SEA
-
SDR
28h 05m
1 stop
Multiple Airlines Logo
3:10 pm - 9:40 am
SDR
-
SEA
51h 30m
2 stops
$1,771Multiple Airlines
Tue, Aug 11 - Sat, Aug 15

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British Airways flights from Seattle to Santander

Our best British Airways deals on Seattle to Santander flight tickets
British Airways
Sep 9
SEA3:42 pmSeattle/Tacoma Intl
44h 18m
2 stops
SDR9:00 pmSantander
Sep 16
SDR6:30 amSantander
43h 12m
2 stops
SEA4:42 pmSeattle/Tacoma Intl
$1,015
British Airways
Sep 6
SEA10:19 amSeattle/Tacoma Intl
26h 31m
2 stops
SDR9:50 pmSantander
Sep 21
SDR6:30 amSantander
26h 41m
2 stops
SEA12:11 amSeattle/Tacoma Intl
$1,660

Iberia flights from Seattle to Santander

Our best Iberia deals on Seattle to Santander flight tickets
Iberia
Jan 17
SEA6:50 pmSeattle/Tacoma Intl
35h 45m
2 stops
SDR3:35 pmSantander
Jan 21
SDR6:30 amSantander
26h 21m
2 stops
SEA11:51 pmSeattle/Tacoma Intl
$1,045
Iberia
Sep 6
SEA1:34 pmSeattle/Tacoma Intl
18h 26m
2 stops
SDR5:00 pmSantander
Sep 21
SDR6:30 amSantander
24h 06m
2 stops
SEA9:36 pmSeattle/Tacoma Intl
$1,049
Iberia
Aug 9
SEA11:15 amSeattle/Tacoma Intl
20h 45m
2 stops
SDR5:00 pmSantander
Aug 15
SDR3:10 pmSantander
29h 25m
2 stops
SEA11:35 amSeattle/Tacoma Intl
$1,686

momondo 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, momondo users made 832,500 searches. Data last updated July 27, 2026.
Use the filters below to find and compare flights from Seattle to Santander that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSantander

SEA - SDR

SEASDR

Seattle/Tacoma Intl

Wed 9/9

3:42 pm-9:00 pm

2 stops44h 18m

Santander

Wed 9/16

6:30 am-4:42 pm

2 stops43h 12m

$1,015

SeattleSantander

SEA - SDR

SEASDR

Seattle/Tacoma Intl

Sun 1/17

6:50 pm-3:35 pm

2 stops35h 45m

Santander

Thu 1/21

6:30 am-11:51 pm

2 stops26h 21m

$1,045
Quickest round-trip

SeattleSantander

SEA - SDR

SEASDR

Seattle/Tacoma Intl

Sun 9/6

1:34 pm-5:00 pm

2 stops18h 26m

Santander

Mon 9/21

6:30 am-9:36 pm

2 stops24h 06m

$1,049

SeattleSantander

SEA - SDR

SEASDR

Seattle/Tacoma Intl

Wed 9/9

5:50 am-6:10 pm

3 stops27h 20m

Santander

Wed 9/16

8:50 pm-5:10 pm

2 stops29h 20m

$1,155

SeattleSantander

SEA - SDR

SEASDR

Seattle/Tacoma Intl

Wed 9/9

5:50 am-6:10 pm

3 stops27h 20m

Santander

Wed 9/16

1:20 pm-4:00 pm

3 stops35h 40m

$1,565

SeattleSantander

SEA - SDR

SEASDR

Seattle/Tacoma Intl

Sun 9/6

10:19 am-9:50 pm

2 stops26h 31m

Santander

Mon 9/21

6:30 am-12:11 am

2 stops26h 41m

$1,660

SeattleSantander

SEA - SDR

SEASDR

Seattle/Tacoma Intl

Sun 8/9

11:15 am-5:00 pm

2 stops20h 45m

Santander

Sat 8/15

3:10 pm-11:35 am

2 stops29h 25m

$1,686

SeattleSantander

SEA - SDR

SEASDR

Seattle/Tacoma Intl

Sun 8/9

8:20 pm-5:00 pm

2 stops35h 40m

Santander

Sat 8/15

3:10 pm-11:35 am

2 stops29h 25m

$1,687

SeattleSantander

SEA - SDR

SEASDR

Seattle/Tacoma Intl

Sun 8/9

8:20 pm-9:40 am

2 stops28h 20m

Santander

Sat 8/15

9:35 pm-5:10 pm

2 stops28h 35m

$1,716

SeattleSantander

SEA - SDR

SEASDR

Seattle/Tacoma Intl

Tue 8/11

9:40 pm-10:45 am

1 stop28h 05m

Santander

Sat 8/15

3:10 pm-9:40 am

2 stops51h 30m

$1,771

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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See travel insights to Santander from

How to get the cheapest flight ticket from Seattle to Santander

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Seattle/Tacoma Intl to Santander?

Iberia is the most popular carrier operating from Seattle/Tacoma Intl to Santander

What airlines fly to Santander?

Lufthansa, Delta and KLM are the top three most popular airlines that fly to Santander from Seattle according to our data. Lufthansa is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Santander. Keep in mind that there are 4 different airlines that fly to Santander on a routine basis, so you have a few additional options to choose from.

When to book flights from Seattle to Santander

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Santander according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Santander (SEA to SDR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Santander

Fastest flight time

23h 25m

Direct flights

None
The fastest flight from Seattle to Santander takes 23h 25m
There are no direct flights from Seattle to Santander. There are no popular flight routes from Seattle to Santander.
Search flight deals

Frequently asked questions about flying from Seattle to Santander

  • How far is Seattle/Tacoma Intl to Santander by plane?

    There are 5114.6 mi between Seattle/Tacoma Intl and Santander. 23h 25m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Santander Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Santander Airport are updated daily.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Santander Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Santander Airport.

  • What documentation or ID do you need to fly to Santander Airport?

    The travel and health documents you'll need for your trip to Santander Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Santander Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Santander?

Book flights to Santander if you plan to visit one of these locations
Llanes
Potes

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Santander?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Santander for you.

Can I find flights from Seattle to Santander with flexible booking policies on momondo?

Flights from Seattle to Santander with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Seattle to Santander?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Santander from Seattle.

I’m not ready to book a flight from Seattle to Santander right now. Can momondo alert me if prices change?

Price alerts on flights to Santander from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Santander trip

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Fly your favorite airline to Santander

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
Lufthansa
Delta
KLM
United Airlines