Title: Cheap Flights from Waterloo (ALO) to Seattle (SEA) - Expedia.ca ![](https://images.trvl-media.com/place/178307/82efb684-8d05-4b09-b7ea-52d5ab4ea1ac.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178307/82efb684-8d05-4b09-b7ea-52d5ab4ea1ac.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Waterloo (ALO) to Seattle (SEA) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Waterloo, IA (ALO-Waterloo Regional) to Seattle-Tacoma International Airport (SEA) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:alo,to:sea,departure:02/11/2025TANYT&leg2=from:sea,to:alo,departure:09/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Cheap flights from Waterloo (ALO) to Seattle (SEA) Prices were available within the past 7 days and start at for one-way flights and CA $448 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, Nov 4 - Sat, Nov 8 ALO Waterloo SEA Seattle CA $448 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ALO,to:SEA,departure:04/11/2025TANYT&leg2=from:SEA,to:ALO,departure:08/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:447.30&airProductToken=AQqbAQoxCMGCARIENDMyMhjgciCuHCjwlfwCMMqW_AI4QkAAWAFqBUJBU0lDcghPVUZIWk5CWAoyCMGCARIEMjEyNBiuHCCLuAEompf8AjC5mfwCOEJAAVgBagVCQVNJQ3IIT1VGSFpOQlgKMgjBggESBDY0ODEYi7gBIJIBKJOb_AIww5z8AjhCQAFYAWoFQkFTSUNyCE9VRkhaTkJYCmYKMQjBggESBDIzOTgYkgEgrhwo9sf8AjDzyfwCOEJAAFgBagVCQVNJQ3IIT1ZGSFpOQlYKMQjBggESBDQzMjEYrhwg4HIoz8r8AjCcy_wCOEJAAVgBagVCQVNJQ3IIT1ZGSFpOQlYSCggBEAEYASoCQUEYASIECAEQASgCKAMoBDAL) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Fri, Nov 7 - Sat, Nov 8 ALO Waterloo SEA Seattle CA $517 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ALO,to:SEA,departure:07/11/2025TANYT&leg2=from:SEA,to:ALO,departure:08/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:516.10&airProductToken=AQpECiAIwYIBEgQ0MzI2GOByIK4cKIi8_AIw4rz8AjhPQABYAQogCMGCARIEMzIyMRiuHCCSASi2vvwCMNbA_AI4T0ABWAEKRAogCMGCARIEMjM5OBiSASCuHCj2x_wCMPPJ_AI4T0AAWAEKIAjBggESBDQzMjEYrhwg4HIoz8r8AjCcy_wCOE9AAVgBEgoIARABGAEqAkFBGAEiBAgBEAEoBDAB) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, Nov 4 - Sat, Nov 8 ALO Waterloo SEA Seattle CA $523 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ALO,to:SEA,departure:04/11/2025TANYT&leg2=from:SEA,to:ALO,departure:08/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:522.80&airProductToken=AQpmCjEIwYIBEgQ0MzIyGOByIK4cKPCV_AIwypb8AjhCQABYAWoFQkFTSUNyCFEwRldVTkJYCjEIwYIBEgQyMzk4GK4cIJIBKNaX_AIw-Jn8AjhCQAFYAWoFQkFTSUNyCFEwRldVTkJYCmYKMQjBggESBDIzOTgYkgEgrhwo9sf8AjDzyfwCOEJAAFgBagVCQVNJQ3IIT1ZGSFpOQlYKMQjBggESBDQzMjEYrhwg4HIoz8r8AjCcy_wCOEJAAVgBagVCQVNJQ3IIT1ZGSFpOQlYSCggBEAEYASoCQUEYASIECAEQASgCKAMoBDAL) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, Nov 4 - Sat, Nov 8 ALO Waterloo SEA Seattle CA $531 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ALO,to:SEA,departure:04/11/2025TANYT&leg2=from:SEA,to:ALO,departure:08/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:530.10&airProductToken=AQqaAQoxCMGCARIENDMyMhjgciCuHCjwlfwCMMqW_AI4QkAAWAFqBUJBU0lDcghRMEZXVU5CWAoyCMGCARIEMjA3ORiuHCCjsQEompf8AjDHmPwCOEJAAVgBagVCQVNJQ3IIUTBGV1VOQlgKMQjBggESAzc1NxijsQEgkgEom5n8AjCjm_wCOEJAAVgBagVCQVNJQ3IIUTBGV1VOQlgKZgoxCMGCARIEMjM5OBiSASCuHCj2x_wCMPPJ_AI4QkAAWAFqBUJBU0lDcghPVkZIWk5CVgoxCMGCARIENDMyMRiuHCDgcijPyvwCMJzL_AI4QkABWAFqBUJBU0lDcghPVkZIWk5CVhIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sat, Nov 1 - Sat, Nov 8 ALO Waterloo SEA Seattle CA $551 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ALO,to:SEA,departure:01/11/2025TANYT&leg2=from:SEA,to:ALO,departure:08/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:550.50&airProductToken=AQpECiAIwYIBEgQ0MzI2GOByIK4cKIn4-wIw4_j7AjhPQABYAQogCMGCARIEMzAyORiuHCCSASil-fsCMML7-wI4T0ABWAEKRAogCMGCARIEMjM5OBiSASCuHCj2x_wCMPPJ_AI4T0AAWAEKIAjBggESBDQzMjEYrhwg4HIoz8r8AjCcy_wCOE9AAVgBEgoIARABGAEqAkFBGAEiBAgBEAEoBDAB) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, Nov 4 - Sat, Nov 8 ALO Waterloo SEA Seattle CA $558 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ALO,to:SEA,departure:04/11/2025TANYT&leg2=from:SEA,to:ALO,departure:08/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:557.80&airProductToken=AQpoCiAIwYIBEgQ0MzIyGOByIK4cKPCV_AIwypb8AjhPQABYAQohCMGCARIEMjEyNBiuHCCLuAEompf8AjC5mfwCOE9AAVgBCiEIwYIBEgQ2NDgxGIu4ASCSASiTm_wCMMOc_AI4T0ABWAEKRAogCMGCARIEMjM5OBiSASCuHCj2x_wCMPPJ_AI4T0AAWAEKIAjBggESBDQzMjEYrhwg4HIoz8r8AjCcy_wCOE9AAVgBEgoIARABGAEqAkFBGAEiBAgBEAEoBDAB) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, Nov 4 - Sat, Nov 8 ALO Waterloo SEA Seattle CA $561 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ALO,to:SEA,departure:04/11/2025TANYT&leg2=from:SEA,to:ALO,departure:08/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:560.20&airProductToken=AQqYAQowCMGCARIENDMyMhjgciCuHCjwlfwCMMqW_AI4T0AAWAFqBE1BSU5yCE9VRkhaTk0zCjEIwYIBEgQyMTI0GK4cIIu4ASial_wCMLmZ_AI4T0ABWAFqBE1BSU5yCE9VRkhaTk0zCjEIwYIBEgQ2NDgxGIu4ASCSASiTm_wCMMOc_AI4T0ABWAFqBE1BSU5yCE9VRkhaTk0zCmQKMAjBggESBDIzOTgYkgEgrhwo9sf8AjDzyfwCOE9AAFgBagRNQUlOcghPVkZIWk5NNQowCMGCARIENDMyMRiuHCDgcijPyvwCMJzL_AI4T0ABWAFqBE1BSU5yCE9WRkhaTk01EgoIARABGAEqAkFBGAEiBAgBEAEoAigDKAQwCw) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sat, Nov 1 - Wed, Nov 5 ALO Waterloo SEA Seattle CA $586 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ALO,to:SEA,departure:01/11/2025TANYT&leg2=from:SEA,to:ALO,departure:05/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:586.00&airProductToken=AQpECiAIwYIBEgQ0MzI2GOByIK4cKIn4-wIw4_j7AjhPQABYAQogCMGCARIEMzAyORiuHCCSASil-fsCMML7-wI4T0ABWAEKRAogCMGCARIEMjA2ORiSASCuHCi8o_wCMLSl_AI4T0AAWAEKIAjBggESBDQzMjEYrhwg4HIo_qb8AjDVp_wCOE9AAVgBEgoIARABGAEqAkFBGAEiBAgBEAEoBDAB) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, Nov 4 - Sat, Nov 8 ALO Waterloo SEA Seattle CA $598 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ALO,to:SEA,departure:04/11/2025TANYT&leg2=from:SEA,to:ALO,departure:08/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:597.80&airProductToken=AQqbAQoxCMGCARIENDMyMhjgciCuHCjwlfwCMMqW_AI4QkAAWAFqBUJBU0lDcghTMEZXVU5CWgoyCMGCARIEMTYwNhiuHCDimgEo_Zf8AjD1mPwCOEJAAVgBagVCQVNJQ3IIUzBGV1VOQloKMgjBggESBDMyNTIY4poBIJIBKIma_AIw6pz8AjhCQAFYAWoFQkFTSUNyCFMwRldVTkJaCmYKMQjBggESBDIzOTgYkgEgrhwo9sf8AjDzyfwCOEJAAFgBagVCQVNJQ3IIT1ZGSFpOQlYKMQjBggESBDQzMjEYrhwg4HIoz8r8AjCcy_wCOEJAAVgBagVCQVNJQ3IIT1ZGSFpOQlYSCggBEAEYASoCQUEYASIECAEQASgCKAMoBDAL) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, Nov 4 - Sat, Nov 8 ALO Waterloo SEA Seattle CA $636 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ALO,to:SEA,departure:04/11/2025TANYT&leg2=from:SEA,to:ALO,departure:08/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:635.70&airProductToken=AQpkCjAIwYIBEgQ0MzIyGOByIK4cKPCV_AIwypb8AjhRQABYAWoETUFJTnIIUTBGV1VOTTMKMAjBggESBDIzOTgYrhwgkgEo1pf8AjD4mfwCOFFAAVgBagRNQUlOcghRMEZXVU5NMwpkCjAIwYIBEgQyMzk4GJIBIK4cKPbH_AIw88n8AjhPQABYAWoETUFJTnIIT1ZGSFpOTTUKMAjBggESBDQzMjEYrhwg4HIoz8r8AjCcy_wCOE9AAVgBagRNQUlOcghPVkZIWk5NNRIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, Nov 4 - Sat, Nov 8 ALO Waterloo SEA Seattle CA $643 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ALO,to:SEA,departure:04/11/2025TANYT&leg2=from:SEA,to:ALO,departure:08/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:643.00&airProductToken=AQqXAQowCMGCARIENDMyMhjgciCuHCjwlfwCMMqW_AI4UUAAWAFqBE1BSU5yCFEwRldVTk0zCjEIwYIBEgQyMDc5GK4cIKOxASial_wCMMeY_AI4UUABWAFqBE1BSU5yCFEwRldVTk0zCjAIwYIBEgM3NTcYo7EBIJIBKJuZ_AIwo5v8AjhRQAFYAWoETUFJTnIIUTBGV1VOTTMKZAowCMGCARIEMjM5OBiSASCuHCj2x_wCMPPJ_AI4T0AAWAFqBE1BSU5yCE9WRkhaTk01CjAIwYIBEgQ0MzIxGK4cIOByKM_K_AIwnMv8AjhPQAFYAWoETUFJTnIIT1ZGSFpOTTUSCggBEAEYASoCQUEYASIECAEQASgCKAMoBDAL) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, Nov 4 - Sat, Nov 8 ALO Waterloo SEA Seattle CA $654 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ALO,to:SEA,departure:04/11/2025TANYT&leg2=from:SEA,to:ALO,departure:08/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:653.70&airProductToken=AQqbAQoxCMGCARIENDMyMhjgciCuHCjwlfwCMMqW_AI4QkAAWAFqBUJBU0lDcghHMEZXVU5CWgoyCMGCARIEMjgyMBiuHCDvuQEonJj8AjCQmvwCOEJAAVgBagVCQVNJQ3IIRzBGV1VOQloKMgjBggESBDUwMTQY77kBIJIBKPeb_AIwvp38AjhCQAFYAWoFQkFTSUNyCEcwRldVTkJaCmYKMQjBggESBDIzOTgYkgEgrhwo9sf8AjDzyfwCOEJAAFgBagVCQVNJQ3IIT1ZGSFpOQlYKMQjBggESBDQzMjEYrhwg4HIoz8r8AjCcy_wCOEJAAVgBagVCQVNJQ3IIT1ZGSFpOQlYSCggBEAEYASoCQUEYASIECAEQASgCKAMoBDAL) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sun, Nov 2 - Sat, Nov 8 ALO Waterloo SEA Seattle CA $656 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ALO,to:SEA,departure:02/11/2025TANYT&leg2=from:SEA,to:ALO,departure:08/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:655.90&airProductToken=AQpECiAIwYIBEgQ0MzI2GOByIK4cKOiD_AIwwoT8AjhRQABYAQogCMGCARIEMzIyMRiuHCCSASiWhvwCMLaI_AI4UUABWAEKRAogCMGCARIEMjM5OBiSASCuHCj2x_wCMPPJ_AI4T0AAWAEKIAjBggESBDQzMjEYrhwg4HIoz8r8AjCcy_wCOE9AAVgBEgoIARABGAEqAkFBGAEiBAgBEAEoBDAB) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sat, Nov 1 - Thu, Nov 6 ALO Waterloo SEA Seattle CA $692 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ALO,to:SEA,departure:01/11/2025TANYT&leg2=from:SEA,to:ALO,departure:06/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:691.40&airProductToken=AQpECiAIwYIBEgQ0MzI2GOByIK4cKIn4-wIw4_j7AjhPQABYAQogCMGCARIEMzAyORiuHCCSASil-fsCMML7-wI4T0ABWAEKRAogCMGCARIEMjM5OBiSASCuHCi2sfwCMLOz_AI4UUAAWAEKIAjBggESBDQzMjEYrhwg4HIoj7T8AjDctPwCOFFAAVgBEgoIARABGAEqAkFBGAEiBAgBEAEoBDAB) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, Nov 4 - Sun, Nov 9 ALO Waterloo SEA Seattle CA $699 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ALO,to:SEA,departure:04/11/2025TANYT&leg2=from:SEA,to:ALO,departure:09/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:698.70&airProductToken=AQpoCiAIwYIBEgQ0MzIyGOByIK4cKPCV_AIwypb8AjhPQABYAQohCMGCARIEMjEyNBiuHCCLuAEompf8AjC5mfwCOE9AAVgBCiEIwYIBEgQ2NDgxGIu4ASCSASiTm_wCMMOc_AI4T0ABWAEKRAogCMGCARIEMjM5OBiSASCuHCiW0_wCMJPV_AI4UUAAWAEKIAjBggESBDQzMjEYrhwg4HIo79X8AjC81vwCOFFAAVgBEgoIARABGAEqAkFBGAEiBAgBEAEoBDAB) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, Nov 4 - Sat, Nov 8 ALO Waterloo SEA Seattle CA $700 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ALO,to:SEA,departure:04/11/2025TANYT&leg2=from:SEA,to:ALO,departure:08/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:699.90&airProductToken=AQqeAQoyCMGCARIENDMyMhjgciCuHCjwlfwCMMqW_AI4T0AAWAFqBk1BSU5GTHIIT1VGSFpSVTMKMwjBggESBDIxMjQYrhwgi7gBKJqX_AIwuZn8AjhPQAFYAWoGTUFJTkZMcghPVUZIWlJVMwozCMGCARIENjQ4MRiLuAEgkgEok5v8AjDDnPwCOE9AAVgBagZNQUlORkxyCE9VRkhaUlUzCmgKMgjBggESBDIzOTgYkgEgrhwo9sf8AjDzyfwCOE9AAFgBagZNQUlORkxyCE9WRkhaUlU1CjIIwYIBEgQ0MzIxGK4cIOByKM_K_AIwnMv8AjhPQAFYAWoGTUFJTkZMcghPVkZIWlJVNRIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, Nov 4 - Sat, Nov 8 ALO Waterloo SEA Seattle CA $710 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ALO,to:SEA,departure:04/11/2025TANYT&leg2=from:SEA,to:ALO,departure:08/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:709.60&airProductToken=AQqYAQowCMGCARIENDMyMhjgciCuHCjwlfwCMMqW_AI4U0AAWAFqBE1BSU5yCFMwRldVTk0xCjEIwYIBEgQxNjA2GK4cIOKaASj9l_wCMPWY_AI4U0ABWAFqBE1BSU5yCFMwRldVTk0xCjEIwYIBEgQzMjUyGOKaASCSASiJmvwCMOqc_AI4U0ABWAFqBE1BSU5yCFMwRldVTk0xCmQKMAjBggESBDIzOTgYkgEgrhwo9sf8AjDzyfwCOE9AAFgBagRNQUlOcghPVkZIWk5NNQowCMGCARIENDMyMRiuHCDgcijPyvwCMJzL_AI4T0ABWAFqBE1BSU5yCE9WRkhaTk01EgoIARABGAEqAkFBGAEiBAgBEAEoAigDKAQwCw) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, Nov 4 - Sat, Nov 8 ALO Waterloo SEA Seattle CA $767 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ALO,to:SEA,departure:04/11/2025TANYT&leg2=from:SEA,to:ALO,departure:08/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:766.60&airProductToken=AQqYAQowCMGCARIENDMyMhjgciCuHCjwlfwCMMqW_AI4R0AAWAFqBE1BSU5yCEcwRldVTk0xCjEIwYIBEgQyODIwGK4cIO-5ASicmPwCMJCa_AI4R0ABWAFqBE1BSU5yCEcwRldVTk0xCjEIwYIBEgQ1MDE0GO-5ASCSASj3m_wCML6d_AI4R0ABWAFqBE1BSU5yCEcwRldVTk0xCmQKMAjBggESBDIzOTgYkgEgrhwo9sf8AjDzyfwCOE9AAFgBagRNQUlOcghPVkZIWk5NNQowCMGCARIENDMyMRiuHCDgcijPyvwCMJzL_AI4T0ABWAFqBE1BSU5yCE9WRkhaTk01EgoIARABGAEqAkFBGAEiBAgBEAEoAigDKAQwCw) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, Nov 4 - Sat, Nov 8 ALO Waterloo SEA Seattle CA $776 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ALO,to:SEA,departure:04/11/2025TANYT&leg2=from:SEA,to:ALO,departure:08/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:775.40&airProductToken=AQpoCjIIwYIBEgQ0MzIyGOByIK4cKPCV_AIwypb8AjhRQABYAWoGTUFJTkZMcghRMEZXVVJVMwoyCMGCARIEMjM5OBiuHCCSASjWl_wCMPiZ_AI4UUABWAFqBk1BSU5GTHIIUTBGV1VSVTMKaAoyCMGCARIEMjM5OBiSASCuHCj2x_wCMPPJ_AI4T0AAWAFqBk1BSU5GTHIIT1ZGSFpSVTUKMgjBggESBDQzMjEYrhwg4HIoz8r8AjCcy_wCOE9AAVgBagZNQUlORkxyCE9WRkhaUlU1EgoIARABGAEqAkFBGAEiBAgBEAEoAigDKAQwCw) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, Nov 4 - Sat, Nov 8 ALO Waterloo SEA Seattle CA $783 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ALO,to:SEA,departure:04/11/2025TANYT&leg2=from:SEA,to:ALO,departure:08/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:782.70&airProductToken=AQqdAQoyCMGCARIENDMyMhjgciCuHCjwlfwCMMqW_AI4UUAAWAFqBk1BSU5GTHIIUTBGV1VSVTMKMwjBggESBDIwNzkYrhwgo7EBKJqX_AIwx5j8AjhRQAFYAWoGTUFJTkZMcghRMEZXVVJVMwoyCMGCARIDNzU3GKOxASCSASibmfwCMKOb_AI4UUABWAFqBk1BSU5GTHIIUTBGV1VSVTMKaAoyCMGCARIEMjM5OBiSASCuHCj2x_wCMPPJ_AI4T0AAWAFqBk1BSU5GTHIIT1ZGSFpSVTUKMgjBggESBDQzMjEYrhwg4HIoz8r8AjCcy_wCOE9AAVgBagZNQUlORkxyCE9WRkhaUlU1EgoIARABGAEqAkFBGAEiBAgBEAEoAigDKAQwCw) ## Alternative airports near Seattle Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.ca/Flights-Search?leg1=from:ALO,to:SEA,departure:02/11/2025TANYT&leg2=from:SEA,to:ALO,departure:11/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) SEA Seattle - Tacoma Intl. Cheapest 20 min [Flights from CA $656](https://www.expedia.ca/Flights-Search?leg1=from:ALO,to:SEA,departure:02/11/2025TANYT&leg2=from:SEA,to:ALO,departure:11/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ## Travel information | Origin airport | Waterloo Regional | | --- | --- | | Destination airport | Seattle - Tacoma Intl. | | Airlines serving | American Airlines | | Roundtrip price | CA $447 | | Distance | 2383 km | ## Book with confidence ### Waterloo to Seattle Flights **The easy way to book your flights from Waterloo to Seattle**  With Expedia, it’s simple to find and book flights to Seattle from Waterloo whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Seattle - Tacoma Intl., too.   Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Waterloo to Seattle today, tomorrow, or this week.   **Save dollars with cheap flights from Waterloo Regional, ALO to Seattle - Tacoma Intl., SEA**  Sort your search results by price to find great deals on your flight from Waterloo to Seattle—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Seattle from Waterloo currently is just CA $448 rising to CA $783.   Here are more money-saving tips:  - Fly in November when flight prices are normally at their lowest  - Book about a month to 6 weeks before you travel for the best prices to Seattle   - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times  - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!  **Reasons to choose Expedia for your flight to Seattle from Waterloo**  Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. 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Airport (PAE)](https://www.expedia.ca/lp/flights/mfr/pae/medford-to-seattle-paine-field-intl-airport) - [Flights from Missoula (MSO) to Port Angeles (CLM)](https://www.expedia.ca/lp/flights/mso/clm/missoula-to-port-angeles) - [Flights from Ocala (OCF) to Seattle Paine Field Intl. Airport (PAE)](https://www.expedia.ca/lp/flights/ocf/pae/ocala-to-seattle-paine-field-intl-airport) - [Flights from Omaha (OMA) to Port Angeles (CLM)](https://www.expedia.ca/lp/flights/oma/clm/omaha-to-port-angeles) - [Flights from Chicago (ORD) to Port Angeles (CLM)](https://www.expedia.ca/lp/flights/ord/clm/chicago-to-port-angeles) - [Flights from North Bend (OTH) to Port Angeles (CLM)](https://www.expedia.ca/lp/flights/oth/clm/north-bend-to-port-angeles) - [Flights from Phoenix (PHX) to Seattle Paine Field Intl. Airport (PAE)](https://www.expedia.ca/lp/flights/phx/pae/phoenix-to-seattle-paine-field-intl-airport) - [Flights from Plattsburgh (PLB) to Seattle Paine Field Intl. Airport (PAE)](https://www.expedia.ca/lp/flights/plb/pae/plattsburgh-to-seattle-paine-field-intl-airport) - [Flights from Rock Springs (RKS) to Seattle Paine Field Intl. Airport (PAE)](https://www.expedia.ca/lp/flights/rks/pae/rock-springs-to-seattle-paine-field-intl-airport) - [Flights from Renton (RNT) to Port Angeles (CLM)](https://www.expedia.ca/lp/flights/rnt/clm/renton-to-port-angeles) - [Flights from San Diego (SAN) to Port Angeles (CLM)](https://www.expedia.ca/lp/flights/san/clm/san-diego-to-port-angeles) - [Flights from Santa Barbara (SBA) to Port Angeles (CLM)](https://www.expedia.ca/lp/flights/sba/clm/santa-barbara-to-port-angeles) - [Flights from Salem (SLE) to Port Angeles (CLM)](https://www.expedia.ca/lp/flights/sle/clm/salem-to-port-angeles) - [Flights from Salina (SLN) to Port Angeles (CLM)](https://www.expedia.ca/lp/flights/sln/clm/salina-to-port-angeles) - [Flights from Santa Maria (SMX) to Seattle Paine Field Intl. Airport (PAE)](https://www.expedia.ca/lp/flights/smx/pae/santa-maria-to-seattle-paine-field-intl-airport) - [Flights from Shenzhen (SZX) to Port Angeles (CLM)](https://www.expedia.ca/lp/flights/szx/clm/shenzhen-to-port-angeles) - [Flights from Tel Aviv (TLV) to Seattle (BFI)](https://www.expedia.ca/lp/flights/tlv/bfi/tel-aviv-to-seattle) - [Flights from Tel Aviv (TLV) to Port Angeles (CLM)](https://www.expedia.ca/lp/flights/tlv/clm/tel-aviv-to-port-angeles) - [Flights from Tampa (TPA) to Port Angeles (CLM)](https://www.expedia.ca/lp/flights/tpa/clm/tampa-to-port-angeles) - [Flights from Tucson (TUS) to Port Angeles (CLM)](https://www.expedia.ca/lp/flights/tus/clm/tucson-to-port-angeles) - [Flights from Twin Falls (TWF) to Port Angeles (CLM)](https://www.expedia.ca/lp/flights/twf/clm/twin-falls-to-port-angeles) - [Flights from Van Nuys (VNY) to Port Angeles (CLM)](https://www.expedia.ca/lp/flights/vny/clm/van-nuys-to-port-angeles) - [Flights from Williston (XWA) to Seattle Paine Field Intl. Airport (PAE)](https://www.expedia.ca/lp/flights/xwa/pae/williston-to-seattle-paine-field-intl-airport) - [Flights from Lethbridge (YQL) to Seattle Paine Field Intl. Airport (PAE)](https://www.expedia.ca/lp/flights/yql/pae/lethbridge-to-seattle-paine-field-intl-airport) - [Flights from Regina (YQR) to Seattle (BFI)](https://www.expedia.ca/lp/flights/yqr/bfi/regina-to-seattle) \*Available to Expedia members.