Title: Flights to Santander from Seattle from $353 (SEA to SDR) - Expedia.com

![Santander showing rugged coastline, a sandy beach and general coastal views](https://images.trvl-media.com/place/553248621532487516/b50c7586-0b09-4372-a487-385e9d757c64.jpg?impolicy=fcrop&w=1200&h=500&q=medium)

![](https://images.trvl-media.com/place/553248621532487516/b50c7586-0b09-4372-a487-385e9d757c64.jpg?impolicy=fcrop&w=1200&h=500&q=medium)

# $353 Cheap Flights from Seattle (SEA) to Santander (SDR)

[View $353 flight on Tue, Aug 18, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:SEA,to:SDR,departure:8/18/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:352.40&airProductToken=AQqmAQo9CMmEARIEMzUwNhiSASDriQEo6LmVAzCdvpUDOE9AAFgBagVCQVNJQ3IIT0xYOUM5QlZ6CQjCggESAzA0OAoxCMmEARIDNzI0GOuJASCMGCjiwJUDMPPBlQM4T0ABWAFqBUJBU0lDcghPTFg5QzlCVgoyCMmEARIEMTA1ORiMGCDyiAEowcaVAzCCx5UDOE9AAVgBagVCQVNJQ3IIT0xYOUM5QlYSCggBEAEYASoCSUIYASIECAEQASgCKAMoBDAN) 

## Popular airlines from Seattle-Tacoma International Airport (SEA) to Santander (SDR)

- ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg)  
American Airlines  
[](https://www.expedia.com/Flights-Search?leg1=from:SEA,to:SDR,departure:4/5/2026TANYT&leg2=from:SDR,to:SEA,departure:4/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}])
- ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg)  
United  
[](https://www.expedia.com/Flights-Search?leg1=from:SEA,to:SDR,departure:4/5/2026TANYT&leg2=from:SDR,to:SEA,departure:4/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}])
- ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WN.svg)  
Southwest Airlines  
[](https://www.expedia.com/Flights-Search?leg1=from:SEA,to:SDR,departure:4/5/2026TANYT&leg2=from:SDR,to:SEA,departure:4/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}])
- ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg)  
Delta  
[](https://www.expedia.com/Flights-Search?leg1=from:SEA,to:SDR,departure:4/5/2026TANYT&leg2=from:SDR,to:SEA,departure:4/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}])
- ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_F9.svg)  
Frontier Airlines  
[](https://www.expedia.com/Flights-Search?leg1=from:SEA,to:SDR,departure:4/5/2026TANYT&leg2=from:SDR,to:SEA,departure:4/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}])
- ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_B6.svg)  
JetBlue Airways  
[](https://www.expedia.com/Flights-Search?leg1=from:SEA,to:SDR,departure:4/5/2026TANYT&leg2=from:SDR,to:SEA,departure:4/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"B6"}}])
- ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg)  
Alaska Airlines  
[](https://www.expedia.com/Flights-Search?leg1=from:SEA,to:SDR,departure:4/5/2026TANYT&leg2=from:SDR,to:SEA,departure:4/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}])

## Cheap Flights from Seattle to Santander (SEA-SDR)

Prices were available within the past 7 days and start at $353 for one-way flights and $917 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

All deals

One way

Roundtrip

![Iberia](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/IB.gif)

Wed, Apr 8 - Wed, Apr 22

SEA

Seattle

SDR

Santander

$917

Roundtrip

found 5 days ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SEA,to:SDR,departure:4/8/2026TANYT&leg2=from:SDR,to:SEA,departure:4/22/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:916.43&airProductToken=AQqmAQo9CMmEARIENDQyMhiSASCjsQEo9umJAzDr64kDOE5AAFgBagVCQVNJQ3IITkxYMEMxQlZ6CQjBggESAzcxNwoxCMmEARIDMzY0GKOxASCMGCjF7IkDMInxiQM4TkABWAFqBUJBU0lDcghOTFgwQzFCVgoyCMmEARIEMTA1ORiMGCDyiAEowfmJAzCC-okDOE5AAVgBagVCQVNJQ3IITkxYMEMxQlYKtAEKMgjJhAESBDEwNjYY8ogBIIwYKM7_igMwlICLAzhOQABYAWoFQkFTSUNyCE5MWDBDMUJWCj4IyYQBEgQ0NjA4GIwYIKOxASjUgosDMOOHiwM4TkABWAFqBUJBU0lDcghOTFgwQzFCVnoKCMGCARIEMDAzNwo-CMmEARIENDU0MxijsQEgkgEo5IiLAzDmiosDOE5AAVgBagVCQVNJQ3IITkxYMEMxQlZ6CgjBggESBDIwMDkSCggBEAEYASoCSUIYASIECAEQASgCKAMoBDAN)

![Iberia](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/IB.gif)

Thu, Aug 6 - Fri, Aug 21

SEA

Seattle

SDR

Santander

$969

Roundtrip

found 5 days ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SEA,to:SDR,departure:8/6/2026TANYT&leg2=from:SDR,to:SEA,departure:8/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:968.53&airProductToken=AQqbAQoyCMmEARIEMzUwNhiSASDriQEo6LKUAzCdt5QDOFNAAFgBagVCQVNJQ3IIU0xXMEMxQlYKMQjJhAESAzcyNhjriQEgjBgolLqUAzClu5QDOFNAAVgBagVCQVNJQ3IIU0xXMEMxQlYKMgjJhAESBDEwNTkYjBgg8ogBKJS_lAMw1b-UAzhTQAFYAWoFQkFTSUNyCFNMVzBDMUJWCpsBCjIIyYQBEgQxMDY2GPKIASCMGCju0JUDMLTRlQM4T0AAWAFqBUJBU0lDcghPS1g5QzlCVgoxCMmEARIDMzYzGIwYIKOxASij1ZUDMMbalQM4T0ABWAFqBUJBU0lDcghPS1g5QzlCVgoyCMmEARIENDY5MRijsQEgkgEo3NuVAzDa3ZUDOE9AAVgBagVCQVNJQ3IIT0tYOUM5QlYSDAgBEAEYASoCSUIyABgBIgQIARABKAIoAygEMA0)

![Iberia](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/IB.gif)

Wed, Apr 8 - Wed, Apr 22

SEA

Seattle

SDR

Santander

$971

Roundtrip

found 5 days ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SEA,to:SDR,departure:4/8/2026TANYT&leg2=from:SDR,to:SEA,departure:4/22/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:970.13&airProductToken=AQqnAQo-CMmEARIENDA4NhiSASCjsQEo0eaJAzDF6IkDOFNAAFgBagVCQVNJQ3IIU0xYMEMxQlZ6CgjBggESBDE2NjcKMQjJhAESAzM2NBijsQEgjBgoxeyJAzCJ8YkDOFNAAVgBagVCQVNJQ3IIU0xYMEMxQlYKMgjJhAESBDEwNjMYjBgg8ogBKN7xiQMwpPKJAzhTQAFYAWoFQkFTSUNyCFNMWDBDMUJWCrQBCjIIyYQBEgQxMDY2GPKIASCMGCjO_4oDMJSAiwM4TkAAWAFqBUJBU0lDcghOTFgwQzFCVgo-CMmEARIENDYwOBiMGCCjsQEo1IKLAzDjh4sDOE5AAVgBagVCQVNJQ3IITkxYMEMxQlZ6CgjBggESBDAwMzcKPgjJhAESBDQ1NDMYo7EBIJIBKOSIiwMw5oqLAzhOQAFYAWoFQkFTSUNyCE5MWDBDMUJWegoIwYIBEgQyMDA5EgoIARABGAEqAklCGAEiBAgBEAEoAigDKAQwDQ)

![Iberia](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/IB.gif)

Wed, Apr 8 - Wed, Apr 22

SEA

Seattle

SDR

Santander

$1,017

Roundtrip

found 5 days ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SEA,to:SDR,departure:4/8/2026TANYT&leg2=from:SDR,to:SEA,departure:4/22/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1016.43&airProductToken=AQqmAQo9CMmEARIENDQyMhiSASCjsQEo9umJAzDr64kDOE5AAFgBagVCQVNJQ3IITkxYMEMxQlZ6CQjBggESAzcxNwoxCMmEARIDMzY0GKOxASCMGCjF7IkDMInxiQM4TkABWAFqBUJBU0lDcghOTFgwQzFCVgoyCMmEARIEMTA1ORiMGCDyiAEowfmJAzCC-okDOE5AAVgBagVCQVNJQ3IITkxYMEMxQlYKtAEKMwjJhAESBDEwNjYY8ogBIIwYKM7_igMwlICLAzhOQABYAWoGT1BUSU1BcghOTFgwQzFNNQo9CMmEARIEODA0ORiMGCCuHCj3gosDMKyHiwM4TkABWAFqBk9QVElNQXIITkxYMEMxTTV6CQjBggESAzEyNQo-CMmEARIENzI2NRiuHCCSASiciIsDMLSKiwM4UUABWAFqBk9QVElNQXIITkxYMEMxTTV6CgjBpgESBDA1ODQSCggBEAEYASoCSUIYASIECAEQASgCKAMoBDAN)

![Iberia](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/IB.gif)

Thu, Aug 6 - Fri, Aug 21

SEA

Seattle

SDR

Santander

$1,035

Roundtrip

found 5 days ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SEA,to:SDR,departure:8/6/2026TANYT&leg2=from:SDR,to:SEA,departure:8/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1034.13&airProductToken=AQqeAQozCMmEARIENzI3MRiSASCLuAEol6-UAzDBsJQDOEFAAFgBagZPUFRJTUFyCE5MVzBDMU01CjIIyYQBEgMzNTIYi7gBIIwYKNKxlAMw5raUAzhOQAFYAWoGT1BUSU1BcghOTFcwQzFNNQozCMmEARIEMTA2NxiMGCDyiAEozrmUAzCUupQDOE5AAVgBagZPUFRJTUFyCE5MVzBDMU01CpsBCjIIyYQBEgQxMDY2GPKIASCMGCju0JUDMLTRlQM4T0AAWAFqBUJBU0lDcghPS1g5QzlCVgoxCMmEARIDMzYzGIwYIKOxASij1ZUDMMbalQM4T0ABWAFqBUJBU0lDcghPS1g5QzlCVgoyCMmEARIENDY5MRijsQEgkgEo3NuVAzDa3ZUDOE9AAVgBagVCQVNJQ3IIT0tYOUM5QlYSDAgBEAEYASoCSUIyABgBIgQIARABKAIoAygEMA0)

![Iberia](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/IB.gif)

Wed, Apr 8 - Wed, Apr 22

SEA

Seattle

SDR

Santander

$1,047

Roundtrip

found 5 days ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SEA,to:SDR,departure:4/8/2026TANYT&leg2=from:SDR,to:SEA,departure:4/22/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1046.13&airProductToken=AQqkAQo8CMmEARIENDU1MBiSASCuHCjI5okDMMnoiQM4VkAAWAFqBUJBU0lDcghWTFgwQzFCVnoJCMGCARIDODg1CjAIyYQBEgMzNDIYrhwgjBgoo-qJAzCc7okDOFZAAVgBagVCQVNJQ3IIVkxYMEMxQlYKMgjJhAESBDEwNjMYjBgg8ogBKN7xiQMwpPKJAzhWQAFYAWoFQkFTSUNyCFZMWDBDMUJWCqUBCjIIyYQBEgQxMDY2GPKIASCMGCjO_4oDMJSAiwM4TkAAWAFqBUJBU0lDcghOTFgwQzFCVgowCMmEARIDMzQxGIwYIK4cKImCiwMwzYaLAzhOQAFYAWoFQkFTSUNyCE5MWDBDMUJWCj0IyYQBEgQ4NTI0GK4cIJIBKJaJiwMwsouLAzhOQAFYAWoFQkFTSUNyCE5MWDBDMUJWegoIwYIBEgQyMzk4EgoIARABGAEqAklCGAEiBAgBEAEoAigDKAQwDQ)

![Iberia](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/IB.gif)

Thu, Aug 6 - Fri, Aug 21

SEA

Seattle

SDR

Santander

$1,054

Roundtrip

found 5 days ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SEA,to:SDR,departure:8/6/2026TANYT&leg2=from:SDR,to:SEA,departure:8/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1053.53&airProductToken=AQqbAQoyCMmEARIEMzUwNhiSASDriQEo6LKUAzCdt5QDOFNAAFgBagVCQVNJQ3IIU0xXMEMxQlYKMQjJhAESAzcyNhjriQEgjBgolLqUAzClu5QDOFNAAVgBagVCQVNJQ3IIU0xXMEMxQlYKMgjJhAESBDEwNTkYjBgg8ogBKJS_lAMw1b-UAzhTQAFYAWoFQkFTSUNyCFNMVzBDMUJWCpsBCjIIyYQBEgQxMDYwGPKIASCMGCjF0pUDMIvTlQM4TkAAWAFqBUJBU0lDcghOS1gwQzFCVgoxCMmEARIDMzYzGIwYIKOxASij1ZUDMMbalQM4TkABWAFqBUJBU0lDcghOS1gwQzFCVgoyCMmEARIENDY5MRijsQEgkgEo3NuVAzDa3ZUDOE5AAVgBagVCQVNJQ3IITktYMEMxQlYSDAgBEAEYASoCSUIyABgBIgQIARABKAIoAygEMA0)

![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif)

Thu, Jun 18 - Thu, Aug 20

SEA

Seattle

SDR

Santander

$1,137

Roundtrip

found 3 days ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SEA,to:SDR,departure:6/18/2026TANYT&leg2=from:SDR,to:SEA,departure:8/20/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1136.13&airProductToken=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)

![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif)

Sun, Apr 12 - Sat, Apr 18

SEA

Seattle

SDR

Santander

$1,415

Roundtrip

found 2 days ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SEA,to:SDR,departure:4/12/2026TANYT&leg2=from:SDR,to:SEA,departure:4/18/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1414.43&airProductToken=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)

![Finnair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AY.gif)

Sun, Apr 12 - Sat, Apr 18

SEA

Seattle

SDR

Santander

$1,435

Roundtrip

found 2 days ago

[](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SEA,to:SDR,departure:4/12/2026TANYT&leg2=from:SDR,to:SEA,departure:4/18/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1434.43&airProductToken=AQqvAQpACMGyARIENTQ0OBiSASDriQEo6JmKAzCdnooDOE5AAFgBaghFQ0xBU1NJQ3IITkxYMEMxTTV6CQjCggESAzA0OAo0CMmEARIDNzIyGOuJASCMGCjJoIoDMNqhigM4TkABWAFqCEVDTEFTU0lDcghOTFgwQzFNNQo1CMmEARIEMTA1ORiMGCDyiAEowaaKAzCCp4oDOE5AAVgBaghFQ0xBU1NJQ3IITkxYMEMxTTUKtwEKMwjJhAESBDEwNjgY8ogBIIwYKNfZigMwndqKAzhMQABYAWoGT1BUSU1BcghMTFcwQzFNNQo_CMmEARIENDYwOBiMGCCjsQEo9OCKAzCD5ooDOExAAVgBagZPUFRJTUFyCExMVzBDMU01egoIwYIBEgQwMDM3Cj8IyYQBEgQ0NTQzGKOxASCSASiE54oDMIbpigM4TEABWAFqBk9QVElNQXIITExXMEMxTTV6CgjBggESBDIwMDkSCggBEAEYASoCQVkYASIECAEQASgCKAMoBDAB)

## Frequently asked questions

### How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santander (SDR) cost?

### What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santander (SDR)?

### Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santander (SDR)?

### What is the cheapest airline that flies from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santander (SDR)?

### How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santander (SDR)?

### What is the best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santander (SDR)?

### What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santander (SDR)?

### How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santander (SDR)?

### Can you fly business or first class from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santander (SDR)?

### How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santander (SDR) flight with Expedia?

### Is it cheaper to buy a plane ticket from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santander (SDR) at the last minute?

### Is it cheaper to book a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santander (SDR) flight and hotel package?

### Can I cancel or change the date of my flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Santander (SDR)?

## Travel information

| Origin airport      | Seattle - Tacoma Intl. |
| ------------------- | ---------------------- |
| Destination airport | Santander              |
| Roundtrip price     | $916                   |
| Distance            | 5127 mi                |

## Book with confidence

# Seattle to Santander Flights

The cheapest times to fly from Seattle to Santander

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Santander are during the month of April. You can find some of the cheapest flights from Seattle to Santander with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Seattle to Santander

Sunday is one of the best days to book for cheap flights from Seattle to Santander: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Seattle to Santander

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Santander in 2026\. You can also book with separate airlines for your outbound and return journeys, from $353 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference\*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Santander flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's [vacation packages](https://www.expedia.com/package-deals). Bundling together your Seattle to Santander airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

\*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023\. The percentages you see are averages.

\*Flight schedules are subject to change.

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