Title: Bilbao to Boston cheap flights from $339 (BIO to BOS) - Expedia.com ![](https://images.trvl-media.com/place/178239/8970bbdd-3367-4cf8-9ec8-fe9a12776371.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178239/8970bbdd-3367-4cf8-9ec8-fe9a12776371.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # $339 Cheap Flights from Bilbao (BIO) to Boston (BOS) [View $339 flight on Tue, Jan 26, 2027](https://expedia.com/Flights-Search?trip=oneway&leg1=from:BIO,to:BOS,departure:1/26/2027TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:338.53&airProductToken=AQplCjAIyYQBEgM0MzYYgXIgjBgog8ijAzDJyKMDOE9AAFgBagVCQVNJQ3IIT0xYNUM1QlcKMQjJhAESAzM0NxiMGCDBkwEo8tCjAzD_1KMDOE9AAVgBagVCQVNJQ3IIT0xYNUM1QlcSDAgBEAEYASoCSUIyABgBIgQIARABKAIoAygEMA0) ## Popular airlines from Bilbao Airport (BIO) to Logan International Airport (BOS) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LX.svg) Swiss International Air Lines [](https://www.expedia.com/Flights-Search?leg1=from:BIO,to:BOS,departure:4/11/2026TANYT&leg2=from:BOS,to:BIO,departure:4/18/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LX"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_IB.svg) Iberia [](https://www.expedia.com/Flights-Search?leg1=from:BIO,to:BOS,departure:4/11/2026TANYT&leg2=from:BOS,to:BIO,departure:4/18/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"IB"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_TP.svg) TAP Portugal [](https://www.expedia.com/Flights-Search?leg1=from:BIO,to:BOS,departure:4/11/2026TANYT&leg2=from:BOS,to:BIO,departure:4/18/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"TP"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BA.svg) British Airways [](https://www.expedia.com/Flights-Search?leg1=from:BIO,to:BOS,departure:4/11/2026TANYT&leg2=from:BOS,to:BIO,departure:4/18/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_SN.svg) Brussels Airlines [](https://www.expedia.com/Flights-Search?leg1=from:BIO,to:BOS,departure:4/11/2026TANYT&leg2=from:BOS,to:BIO,departure:4/18/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"SN"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.com/Flights-Search?leg1=from:BIO,to:BOS,departure:4/11/2026TANYT&leg2=from:BOS,to:BIO,departure:4/18/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AY.svg) Finnair [](https://www.expedia.com/Flights-Search?leg1=from:BIO,to:BOS,departure:4/11/2026TANYT&leg2=from:BOS,to:BIO,departure:4/18/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AY"}}]) - ![](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\* - ![](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\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our OneKeyCash [Learn about One Key](https://www.expedia.com/welcome-one-key) ## Cheap Flights from Bilbao to Boston (BIO-BOS) Prices were available within the past 7 days and start at $339 for one-way flights and $511 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) Mon, Apr 13 - Mon, Apr 27 BIO Bilbao BOS Boston $511 Roundtrip found 5 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BIO,to:BOS,departure:4/13/2026TANYT&leg2=from:BOS,to:BIO,departure:4/27/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:510.23&airProductToken=AQpzCj0IyYQBEgQ1MzE5GIFyIMFoKMqeigMwkJ-KAzhPQABYAWoFQkFTSUNyCE9LWDdUOEI0egoI1rIBEgQ1MzE5CjIIyYQBEgQyNjI1GMFoIMGTASj-n4oDMIGkigM4T0ABWAFqBUJBU0lDcghPS1g3VDhCNApzCjIIyYQBEgQyNjI2GMGTASDBaCiqwosDMOLFiwM4T0AAWAFqBUJBU0lDcghPS1g3VDhCNAo9CMmEARIENTMyMhjBaCCBciihyosDMOzKiwM4T0ABWAFqBUJBU0lDcghPS1g3VDhCNHoKCNayARIENTMyMhIKCAIQARgCKgJJQhgBIgQIARABKAIoAygEMA0) ![Iberia](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/IB.gif) Mon, Apr 13 - Mon, Apr 27 BIO Bilbao BOS Boston $511 Roundtrip found 5 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BIO,to:BOS,departure:4/13/2026TANYT&leg2=from:BOS,to:BIO,departure:4/27/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:510.93&airProductToken=AQpzCj0IyYQBEgQ1MzE5GIFyIMFoKMqeigMwkJ-KAzhPQABYAWoFQkFTSUNyCE9LWDdUOEI0egoI1rIBEgQ1MzE5CjIIyYQBEgQyNjI1GMFoIMGTASj-n4oDMIGkigM4T0ABWAFqBUJBU0lDcghPS1g3VDhCNAplCjEIyYQBEgMzNDgYwZMBIIwYKPS_iwMwosOLAzhPQABYAWoFQkFTSUNyCE9LWDdUOEI0CjAIyYQBEgM0MzUYjBgggXIouceLAzD_x4sDOE9AAVgBagVCQVNJQ3IIT0tYN1Q4QjQSCggCEAEYAioCSUIYASIECAEQASgCKAMoBDAN) ![Finnair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AY.gif) Thu, Sep 24 - Sat, Oct 10 BIO Bilbao BOS Boston $534 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BIO,to:BOS,departure:9/24/2026TANYT&leg2=from:BOS,to:BIO,departure:10/10/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:533.13&airProductToken=AQqFAQpACMGyARIENTYxNhiBciCMGCi9z5gDMIPQmAM4T0AAWAFqCEFFTENBTVAycghPS1g3VDhCV3oKCMmEARIENTYxNgpBCMGyARIENTY0NRiMGCDBkwEo5tKYAzDa1pgDOE9AAVgBaghBRUxDQU1QMnIIT0tYN1Q4Qld6CgjJhAESBDU2NDUKhQEKQQjBsgESBDUzNzAYwZMBIIwYKJCNmgMwvpCaAzhPQABYAWoIQUVMQ0FNUDJyCE9LVzdUOEJXegoIyYQBEgQ1MzcwCkAIwbIBEgQ1NjE1GIwYIIFyKPqVmgMwu5aaAzhPQAFYAWoIQUVMQ0FNUDJyCE9LVzdUOEJXegoIyYQBEgQ1NjE1EgoIAhABGAEqAkFZGAEiBAgBEAEoAigDKAQwDw) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Thu, Sep 24 - Sat, Oct 10 BIO Bilbao BOS Boston $548 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BIO,to:BOS,departure:9/24/2026TANYT&leg2=from:BOS,to:BIO,departure:10/10/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:547.73&airProductToken=AQq-AQo9CMKCARIENzA4NRiBciCMGCjT0JgDMJnRmAM4T0AAWAFqBU5PQkFHcghPS1g3VDhCV3oKCMmEARIENzA4NQo9CMKCARIENDI2NxiMGCCpUSiW0pgDMI_WmAM4T0ABWAFqBU5PQkFHcghPS1g3VDhCV3oKCMmEARIENDI2Nwo-CMKCARIENDY1MhipUSDBkwEoqteYAzD515gDOE9AAVgBagVOT0JBR3IIT0tYN1Q4Qld6CgjZsAESBDQ2NTIKvgEKPgjCggESBDE3MjYYwZMBIKlRKJ2JmgMw9omaAzhPQABYAWoFTk9CQUdyCE9LVzdUOEJXegoI2bABEgQxNzI2Cj0IwoIBEgQxNTY2GKlRIIwYKN-KmgMwko6aAzhPQAFYAWoFTk9CQUdyCE9LVzdUOEJXegoIwYIBEgQxNTY2Cj0IwoIBEgQ3MTM2GIwYIIFyKIWPmgMwxo-aAzhPQAFYAWoFTk9CQUdyCE9LVzdUOEJXegoIyYQBEgQ3MTM2EgoIARABGAEqAkJBGAEiBAgBEAEoAigDMA0) ![TAP Portugal](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/TP.gif) Mon, Apr 13 - Mon, Apr 27 BIO Bilbao BOS Boston $549 Roundtrip found 5 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BIO,to:BOS,departure:4/13/2026TANYT&leg2=from:BOS,to:BIO,departure:4/27/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:548.43&airProductToken=AQp4CkAI1KABEgQxMDYzGIFyIIuSASiRnYoDMPqdigM4VEAAWAFqB0RJU0NJTlRyCFRMMERTSTgxegoIzpIBEgQxMDYzCjQI1KABEgMyMTUYi5IBIMGTASiIoIoDMNSjigM4VEAAWAFqB0RJU0NJTlRyCFRMMERTSTgxCngKNAjUoAESAzIxNhjBkwEgi5IBKKXCiwMwsMWLAzhUQABYAWoHRElTQ0lOVHIIVEwwRFNJODEKQAjUoAESBDEwNjQYi5IBIIFyKNzHiwMwwMiLAzhUQABYAWoHRElTQ0lOVHIIVEwwRFNJODF6CgjOkgESBDEwNjQSCggBEAEYASoCVFAYASIECAEQASgCKAMoBDAN) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Fri, Apr 10 - Thu, Apr 30 BIO Bilbao BOS Boston $626 Roundtrip found 5 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BIO,to:BOS,departure:4/10/2026TANYT&leg2=from:BOS,to:BIO,departure:4/30/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:625.53&airProductToken=AQpsCjQIzJABEgQxMTQ3GIFyIKUEKN34iQMw3_mJAzhLQABYAWoIRUNPTElHSFRyCEtQVlFBWEJRCjQIzJABEgM0MjIYpQQgwZMBKPL7iQMw3P-JAzhLQAFYAWoIRUNPTElHSFRyCEtQVlFBWEJRCmwKNAjMkAESAzQyNRjBkwEgjBUo5eKLAzCd5osDOEtAAFgBaghFQ09MSUdIVHIIS1BWUUFYQlEKNAjMkAESBDE4MzAYjBUggXIo3uuLAzDl7IsDOEtAAVgBaghFQ09MSUdIVHIIS1BWUUFYQlESCggCEAEYAioCTEgYASIECAEQASgCKAMoBDAL) ![Swiss International Air Lines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LX.gif) Sun, Apr 5 - Sun, Apr 12 BIO Bilbao BOS Boston $631 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BIO,to:BOS,departure:4/5/2026TANYT&leg2=from:BOS,to:BIO,departure:4/12/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:630.57&airProductToken=AQpwCjwIzLABEgQ4MjI3GIFyILk8KMnBiQMwt8KJAzhLQABYAWoFRUxUMDByCEtQVlFBWEJRegkI15YBEgMyMjcKMAjMsAESAjUyGLk8IMGTASjHxYkDMLvJiQM4S0AAWAFqBUVMVDAwcghLUFZRQVhCUQpwCjAIzLABEgI1MxjBkwEguTwohJmKAzC3nIoDOEtAAFgBagVFTFQwMHIIS1BWUUFYQlEKPAjMsAESBDgyMjYYuTwggXIokJ-KAzCDoIoDOEtAAFgBagVFTFQwMHIIS1BWUUFYQlF6CQjXlgESAzIyNhIKCAEQARgBKgJMWBgBIgQIARABKAIoAygEMAs) ![Austrian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/OS.gif) Thu, Apr 9 - Sat, Apr 25 BIO Bilbao BOS Boston $673 Roundtrip found 5 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BIO,to:BOS,departure:4/9/2026TANYT&leg2=from:BOS,to:BIO,departure:4/25/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:672.13&airProductToken=AQqsAQpACM-mARIENzQyMBiBciClBCjb8okDMN3ziQM4S0AAWAFqCEVDT0xJR0hUcghLUFZRQVhCUXoKCMyQARIEMTE0NQozCM-mARIDMjIwGKUEIJUiKMH0iQMwkfWJAzhLQAFYAWoIRUNPTElHSFRyCEtQVlFBWEJRCjMIz6YBEgIzMRiVIiDBkwEoyPqJAzDu_okDOEtAAVgBaghFQ09MSUdIVHIIS1BWUUFYQlEKagozCM-mARICMzIYwZMBIJUiKJapiwMw9qyLAzhLQABYAWoIRUNPTElHSFRyCEtQVlFBWEJRCjMIz6YBEgM0MzkYlSIggXIozLCLAzDssYsDOEtAAVgBaghFQ09MSUdIVHIIS1BWUUFYQlESCggCEAEYAioCT1MYASIECAEQASgCKAMoBDAL) ![Brussels Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SN.gif) Thu, Apr 9 - Thu, Apr 23 BIO Bilbao BOS Boston $699 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BIO,to:BOS,departure:4/9/2026TANYT&leg2=from:BOS,to:BIO,departure:4/23/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:698.83&airProductToken=AQqvAQo1CNOcARIEMzcxMhiBciChpAEomvKJAzCI84kDOEtAAFgBaghFQ09MSUdIVHIIS1BWUUFYQlEKNAjTnAESAzUxNRihpAEgiBgozfqJAzDa_okDOEtAAVgBaghFQ09MSUdIVHIIS1BWUUFYQlEKQAjTnAESBDg4MzMYiBggwZMBKLaAigMwqoGKAzhLQAFYAWoIRUNPTElHSFRyCEtQVlFBWEJRegkI1YIBEgM2ODgKrwEKQAjTnAESBDg4OTkYwZMBIIgYKL2RiwMwp5KLAzhMQABYAWoIRUNPTElHSFRyCExQVlFBWEJRegkI1YIBEgM3MjEKNAjTnAESAzUxNhiIGCChpAEo75KLAzDFlosDOExAAVgBaghFQ09MSUdIVHIITFBWUUFYQlEKNQjTnAESBDM3MTEYoaQBIIFyKNWZiwMwyJqLAzhMQAFYAWoIRUNPTElHSFRyCExQVlFBWEJREgoIAhABGAIqAlNOGAEiBAgBEAEoAigDKAQwCw) ![Scandinavian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SK.gif) Wed, Jun 3 - Sun, Jun 7 BIO Bilbao BOS Boston $708 Roundtrip found 19 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BIO,to:BOS,departure:6/3/2026TANYT&leg2=from:BOS,to:BIO,departure:6/7/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:707.43&airProductToken=AQpmCjEI05YBEgQxOTEwGIFyIOI7KJ_ejgMwxN-OAzhOQABYAWoFTElHSFRyCE5MRVU2R0hUCjEI05YBEgM5MjcY4jsgwZMBKM3mjgMwt-qOAzhOQAFYAWoFTElHSFRyCE5MRVU2R0hUCmYKMQjTlgESAzkyOBjBkwEg4jsolI2PAzDMkI8DOE5AAFgBagVMSUdIVHIITkxFVTZHSFQKMQjTlgESBDE5MDkY4jsggXIoq5GPAzDfko8DOE5AAVgBagVMSUdIVHIITkxFVTZHSFQSDAgBEAEYASoCU0syABgBIgQIARABKAIoAygEMAE) ## Alternative airports near Boston Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.com/Flights-Search?leg1=from:BIO,to:BOS,departure:4/11/2026TANYT&leg2=from:BOS,to:BIO,departure:4/24/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) BOS Logan Intl. CheapestClosest 7 min [Flights from $626 ](https://www.expedia.com/Flights-Search?leg1=from:BIO,to:BOS,departure:4/11/2026TANYT&leg2=from:BOS,to:BIO,departure:4/24/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ## Frequently asked questions ### How much does a flight from Bilbao (BIO) to Boston, MA (BOS-Logan Intl.) cost? ### What is the cheapest month to fly from Bilbao (BIO) to Boston, MA (BOS-Logan Intl.)? ### Which airlines fly direct from Bilbao (BIO) to Boston, MA (BOS-Logan Intl.)? ### What is the cheapest airline that flies from Bilbao (BIO) to Boston, MA (BOS-Logan Intl.)? ### How do I find cheap flights from Bilbao (BIO) to Boston, MA (BOS-Logan Intl.)? ### What is the best time to fly from Bilbao (BIO) to Boston, MA (BOS-Logan Intl.)? ### What is the earliest flight from Bilbao (BIO) to Boston, MA (BOS-Logan Intl.)? ### What are the most popular departure times for flights from Bilbao (BIO) to Boston, MA (BOS-Logan Intl.)? ### How long does it take to fly from Bilbao (BIO) to Boston, MA (BOS-Logan Intl.)? ### Can you fly business or first class from Bilbao (BIO) to Boston, MA (BOS-Logan Intl.)? > - Lufthansa > - Hop! > - Iberia > - Edelweiss Air > - Turkish Airlines > - KLM > - Brussels Airlines > - Air Europa > - Air France > - SAS ### How do I earn miles on a Bilbao (BIO) to Boston, MA (BOS-Logan Intl.) flight with Expedia? ### What airports do you fly into for Boston from BIO (BIO)? ### Is it cheaper to buy a plane ticket from Bilbao (BIO) to Boston, MA (BOS-Logan Intl.) at the last minute? ### Is it cheaper to book a Bilbao (BIO) to Boston, MA (BOS-Logan Intl.) flight and hotel package? ### Can I cancel or change the date of my flight from Bilbao (BIO) to Boston, MA (BOS-Logan Intl.)? ## Travel information | Origin airport | Bilbao | | ------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Destination airport | Logan Intl. | | Airlines serving | Aer Lingus, Air Canada, Air Europa, Austrian Airlines, British Airways, Brussels Airlines, Finnair, Iberia, Lufthansa, SATA International-Azores Airlines S.A., Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines | | Roundtrip price | $510 | | Distance | 3350 mi | ## Book with confidence # Bilbao to Boston Flights The cheapest times to fly from Bilbao to Boston 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 Bilbao to Boston are during the month of April. You can find some of the cheapest flights from Bilbao to Boston with Expedia's search tool and vast selection of airlines. The best time to book a flight from Bilbao to Boston Sunday is one of the best days to book for cheap flights from Bilbao to Boston: 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 Bilbao to Boston 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 Bilbao to Boston in 2026\. You can also book with separate airlines for your outbound and return journeys, from $339 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 Bilbao to Boston 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 Bilbao to Boston 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. \*Available to One Key members. ## Explore a world of travel with Expedia - Lodging - Flights - Packages - Cars - Other - [Boston Hotels ](https://www.expedia.com/Boston-Hotels.d178239.Travel-Guide-Hotels) - [Hotels near Downtown Boston ](https://www.expedia.com/Downtown-Boston-Boston-Hotels.0-n6340396-0.Travel-Guide-Filter-Hotels) - [Cheap Hotels in Boston ](https://www.expedia.com/Boston-Hotels-Cheap-Hotels.0-0-d178239-tCheapHotels.Travel-Guide-Filter-Hotels) - [Hotels near TD Garden ](https://www.expedia.com/TD-Garden-Hotels.0-l6070137-0.Travel-Guide-Filter-Hotels) - [Hotels with Free Airport Shuttle in Boston ](https://www.expedia.com/Boston-Hotels-Hotels-With-Free-Airport-Shuttle.0-0-d178239-tHotelswithFreeAirportShuttle.Travel-Guide-Filter-Hotels) - [Hotels near Seaport District ](https://www.expedia.com/Seaport-District-Boston-Hotels.0-n6146535-0.Travel-Guide-Filter-Hotels) - [Hotels near Fenway Park ](https://www.expedia.com/Fenway-Park-Hotels.0-l6023384-0.Travel-Guide-Filter-Hotels) - 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