Title: Tri-Cities to Eureka cheap flights from $753 (TRI to ACV) - Expedia.com ![](https://images.trvl-media.com/place/287/6ab3fbf1-1e1b-4ff4-9b6b-bcac85ef6b2c.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/287/6ab3fbf1-1e1b-4ff4-9b6b-bcac85ef6b2c.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # $753 Cheap Flights from Tri-Cities (TRI) to Eureka (ACV) [View $753 flight on Mon, Apr 6, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:TRI,to:ACV,departure:4/6/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:752.45&airProductToken=AQpmCh8IzbABEgM5MTUYs0QgzHAotNOJAzCn1IkDOE5AAFgBCiAIzbABEgM2MDcYzHAgr6UBKPneiQMwt-GJAzhRQAFYAQohCM2wARIDNjU4GK-lASDAqAEohOeJAzCI6YkDOExAAVgBEgoIARABGAEqAk1YGAEiBAgBEAEoBDAB) ## Popular airlines from Tri-Cities, TN (TRI-Tri-Cities Regional) to Eureka, CA (ACV-Arcata - Eureka) - ![](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:TRI,to:ACV,departure:3/13/2026TANYT&leg2=from:ACV,to:TRI,departure:3/20/2026TANYT&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:TRI,to:ACV,departure:3/13/2026TANYT&leg2=from:ACV,to:TRI,departure:3/20/2026TANYT&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:TRI,to:ACV,departure:3/13/2026TANYT&leg2=from:ACV,to:TRI,departure:3/20/2026TANYT&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:TRI,to:ACV,departure:3/13/2026TANYT&leg2=from:ACV,to:TRI,departure:3/20/2026TANYT&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:TRI,to:ACV,departure:3/13/2026TANYT&leg2=from:ACV,to:TRI,departure:3/20/2026TANYT&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:TRI,to:ACV,departure:3/13/2026TANYT&leg2=from:ACV,to:TRI,departure:3/20/2026TANYT&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:TRI,to:ACV,departure:3/13/2026TANYT&leg2=from:ACV,to:TRI,departure:3/20/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![](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 Tri-Cities to Eureka (TRI-ACV) Prices were available within the past 7 days and start at $753 for one-way flights and $697 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Jul 18 - Tue, Jul 21 TRI Tri-Cities ACV Eureka $697 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:TRI,to:ACV,departure:7/18/2026TANYT&leg2=from:ACV,to:TRI,departure:7/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:697.00&airProductToken=AQqgAQozCNWCARIENTI4NRizRCCuHCid15IDMJfYkgM4VEAAWAFqB0VDT05PTVlyCFRGQTdQRkROCjMI1YIBEgQxNTc3GK4cILJxKLHZkgMw19uSAzhUQAFYAWoHRUNPTk9NWXIIVEZBN1BGRE4KNAjVggESBDQ2OTUYsnEgwKgBKJnekgMw8d6SAzhLQAFYAWoHRUNPTk9NWXIIS0ZBMkFERE4KogEKNQjVggESBDU1MDYYwKgBIIu4ASjX_JIDMNP9kgM4S0AAWAFqB0VDT05PTVlyCEtGQTJBREROCjQI1YIBEgQxNzU0GIu4ASCuHCiW_pIDMJeAkwM4S0ABWAFqB0VDT05PTVlyCEtGQTJBREROCjMI1YIBEgQ2MDE2GK4cILNEKImDkwMw-oOTAzhLQAFYAWoHRUNPTk9NWXIIS0ZBMkFERE4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Jul 18 - Tue, Jul 21 TRI Tri-Cities ACV Eureka $737 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:TRI,to:ACV,departure:7/18/2026TANYT&leg2=from:ACV,to:TRI,departure:7/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:737.00&airProductToken=AQqiAQozCNWCARIENTk2NxizRCCuHCj41JIDMPLVkgM4S0AAWAFqB0VDT05PTVlyCEtGQTJQRkROCjQI1YIBEgQyODE0GK4cIIu4ASjf1pIDMPXYkgM4S0ABWAFqB0VDT05PTVlyCEtGQTJQRkROCjUI1YIBEgQ1MjkzGIu4ASDAqAEomtuSAzCV3JIDOFdAAVgBagdFQ09OT01ZcghXRkEwQURETgqiAQo1CNWCARIENTUwNhjAqAEgi7gBKNf8kgMw0_2SAzhLQABYAWoHRUNPTk9NWXIIS0ZBMkFERE4KNAjVggESBDE3NTQYi7gBIK4cKJb-kgMwl4CTAzhLQAFYAWoHRUNPTk9NWXIIS0ZBMkFERE4KMwjVggESBDYwMTYYrhwgs0QoiYOTAzD6g5MDOEtAAVgBagdFQ09OT01ZcghLRkEyQUREThIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Jul 18 - Tue, Jul 21 TRI Tri-Cities ACV Eureka $777 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:TRI,to:ACV,departure:7/18/2026TANYT&leg2=from:ACV,to:TRI,departure:7/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:777.00&airProductToken=AQqgAQozCNWCARIENTk2NxizRCCuHCj41JIDMPLVkgM4VEAAWAFqB0VDT05PTVlyCFRGQTdQRkROCjMI1YIBEgQyNjEwGK4cILJxKOPWkgMwhNmSAzhUQAFYAWoHRUNPTk9NWXIIVEZBN1BGRE4KNAjVggESBDU0ODAYsnEgwKgBKKPbkgMw_9uSAzhTQAFYAWoHRUNPTk9NWXIIU0ZBMEFERE4KogEKNQjVggESBDU1MDYYwKgBIIu4ASjX_JIDMNP9kgM4S0AAWAFqB0VDT05PTVlyCEtGQTJBREROCjQI1YIBEgQxNzU0GIu4ASCuHCiW_pIDMJeAkwM4S0ABWAFqB0VDT05PTVlyCEtGQTJBREROCjMI1YIBEgQ2MDE2GK4cILNEKImDkwMw-oOTAzhLQAFYAWoHRUNPTk9NWXIIS0ZBMkFERE4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Jul 18 - Tue, Jul 21 TRI Tri-Cities ACV Eureka $803 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:TRI,to:ACV,departure:7/18/2026TANYT&leg2=from:ACV,to:TRI,departure:7/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:802.50&airProductToken=AQqgAQozCNWCARIENTI4NRizRCCuHCid15IDMJfYkgM4S0AAWAFqB0VDT05PTVlyCEtGQTJBREROCjMI1YIBEgQyMTc5GK4cILJxKJjbkgMwwt2SAzhXQAFYAWoHRUNPTk9NWXIIV0ZBME9ERE4KNAjVggESBDQ2OTUYsnEgwKgBKJnekgMw8d6SAzhXQAFYAWoHRUNPTk9NWXIIV0ZBME9ERE4KogEKNQjVggESBDU1MDYYwKgBIIu4ASjX_JIDMNP9kgM4S0AAWAFqB0VDT05PTVlyCEtGQTJBREROCjQI1YIBEgQxNzU0GIu4ASCuHCiW_pIDMJeAkwM4S0ABWAFqB0VDT05PTVlyCEtGQTJBREROCjMI1YIBEgQ2MDE2GK4cILNEKImDkwMw-oOTAzhLQAFYAWoHRUNPTk9NWXIIS0ZBMkFERE4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Jul 18 - Tue, Jul 21 TRI Tri-Cities ACV Eureka $808 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:TRI,to:ACV,departure:7/18/2026TANYT&leg2=from:ACV,to:TRI,departure:7/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:807.50&airProductToken=AQqgAQozCNWCARIENTI4NRizRCCuHCid15IDMJfYkgM4V0AAWAFqB0VDT05PTVlyCFdGQTRPRkROCjMI1YIBEgQxMzM4GK4cILJxKMrYkgMw69qSAzhXQAFYAWoHRUNPTk9NWXIIV0ZBNE9GRE4KNAjVggESBDU2MjYYsnEgwKgBKMbdkgMwn96SAzhLQAFYAWoHRUNPTk9NWXIIS0ZBMkFERE4KogEKNQjVggESBDU1MDYYwKgBIIu4ASjX_JIDMNP9kgM4S0AAWAFqB0VDT05PTVlyCEtGQTJBREROCjQI1YIBEgQxNzU0GIu4ASCuHCiW_pIDMJeAkwM4S0ABWAFqB0VDT05PTVlyCEtGQTJBREROCjMI1YIBEgQ2MDE2GK4cILNEKImDkwMw-oOTAzhLQAFYAWoHRUNPTk9NWXIIS0ZBMkFERE4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Jul 18 - Tue, Jul 21 TRI Tri-Cities ACV Eureka $814 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:TRI,to:ACV,departure:7/18/2026TANYT&leg2=from:ACV,to:TRI,departure:7/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:813.01&airProductToken=AQqgAQozCNWCARIENTk2NxizRCCuHCj41JIDMPLVkgM4S0AAWAFqB0VDT05PTVlyCEtGQTJBREROCjMI1YIBEgQxMzM4GK4cILJxKMrYkgMw69qSAzhUQAFYAWoHRUNPTk9NWXIIVEFBNUpLRE4KNAjVggESBDU2MjYYsnEgwKgBKMbdkgMwn96SAzhLQAFYAWoHRUNPTk9NWXIIS0ZBMkFERE4KogEKNQjVggESBDU1MDYYwKgBIIu4ASjX_JIDMNP9kgM4S0AAWAFqB0VDT05PTVlyCEtGQTJBREROCjQI1YIBEgQxNzU0GIu4ASCuHCiW_pIDMJeAkwM4S0ABWAFqB0VDT05PTVlyCEtGQTJBREROCjMI1YIBEgQ2MDE2GK4cILNEKImDkwMw-oOTAzhLQAFYAWoHRUNPTk9NWXIIS0ZBMkFERE4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Jul 18 - Tue, Jul 21 TRI Tri-Cities ACV Eureka $847 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:TRI,to:ACV,departure:7/18/2026TANYT&leg2=from:ACV,to:TRI,departure:7/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:847.00&airProductToken=AQqdAQoyCNWCARIENTI4NRizRCCuHCid15IDMJfYkgM4VEAAWAFqBkVDT1JFRnIIVEZBN1BGRE0KMgjVggESBDE1NzcYrhwgsnEosdmSAzDX25IDOFRAAVgBagZFQ09SRUZyCFRGQTdQRkRNCjMI1YIBEgQ0Njk1GLJxIMCoASiZ3pIDMPHekgM4S0ABWAFqBkVDT1JFRnIIS0ZBMkFERE0KnwEKNAjVggESBDU1MDYYwKgBIIu4ASjX_JIDMNP9kgM4S0AAWAFqBkVDT1JFRnIIS0ZBMkFERE0KMwjVggESBDE3NTQYi7gBIK4cKJb-kgMwl4CTAzhLQAFYAWoGRUNPUkVGcghLRkEyQURETQoyCNWCARIENjAxNhiuHCCzRCiJg5MDMPqDkwM4S0ABWAFqBkVDT1JFRnIIS0ZBMkFERE0SCggBEAEYASoCVUEYASIECAEQASgCKAQoBjAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Jul 18 - Tue, Jul 21 TRI Tri-Cities ACV Eureka $858 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:TRI,to:ACV,departure:7/18/2026TANYT&leg2=from:ACV,to:TRI,departure:7/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:857.01&airProductToken=AQqgAQozCNWCARIENTk2NxizRCCuHCj41JIDMPLVkgM4VEAAWAFqB0VDT05PTVlyCFRGQTdQRkROCjMI1YIBEgQyNjEwGK4cILJxKOPWkgMwhNmSAzhUQAFYAWoHRUNPTk9NWXIIVEZBN1BGRE4KNAjVggESBDU0ODAYsnEgwKgBKKPbkgMw_9uSAzhTQAFYAWoHRUNPTk9NWXIIU0ZBMEFERE4KoAEKNAjVggESBDQ2NTUYwKgBILJxKPH7kgMwvvySAzhTQABYAWoHRUNPTk9NWXIIU0ZBMEFERE4KMwjVggESBDIyNzgYsnEgrhwo8v-SAzD5gZMDOEtAAVgBagdFQ09OT01ZcghLRkEyUEZETgozCNWCARIENjAxNhiuHCCzRCiJg5MDMPqDkwM4S0ABWAFqB0VDT05PTVlyCEtGQTJQRkROEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Jul 18 - Tue, Jul 21 TRI Tri-Cities ACV Eureka $875 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:TRI,to:ACV,departure:7/18/2026TANYT&leg2=from:ACV,to:TRI,departure:7/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:875.00&airProductToken=AQqiAQozCNWCARIENTk2NxizRCCuHCj41JIDMPLVkgM4S0AAWAFqB0VDT05PTVlyCEtGQTJQRkROCjQI1YIBEgQyODE0GK4cIIu4ASjf1pIDMPXYkgM4S0ABWAFqB0VDT05PTVlyCEtGQTJQRkROCjUI1YIBEgQ1MjkzGIu4ASDAqAEomtuSAzCV3JIDOFdAAVgBagdFQ09OT01ZcghXQUEyQURETgqgAQo0CNWCARIENDY1NRjAqAEgsnEo8fuSAzC-_JIDOFdAAFgBagdFQ09OT01ZcghXQUEyQURETgozCNWCARIEMjI3OBiycSCuHCjy_5IDMPmBkwM4S0ABWAFqB0VDT05PTVlyCEtGQTJQRkROCjMI1YIBEgQ2MDE2GK4cILNEKImDkwMw-oOTAzhLQAFYAWoHRUNPTk9NWXIIS0ZBMlBGRE4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Jul 18 - Tue, Jul 21 TRI Tri-Cities ACV Eureka $883 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:TRI,to:ACV,departure:7/18/2026TANYT&leg2=from:ACV,to:TRI,departure:7/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:882.50&airProductToken=AQqgAQozCNWCARIENTI4NRizRCCuHCid15IDMJfYkgM4S0AAWAFqB0VDT05PTVlyCEtGQTJBREROCjMI1YIBEgQyMjUxGK4cILJxKInakgMwrdySAzhXQAFYAWoHRUNPTk9NWXIIV0ZBME9ERE4KNAjVggESBDU2MjYYsnEgwKgBKMbdkgMwn96SAzhXQAFYAWoHRUNPTk9NWXIIV0ZBME9ERE4KoAEKNAjVggESBDQ2NTUYwKgBILJxKPH7kgMwvvySAzhTQABYAWoHRUNPTk9NWXIIU0ZBMEFERE4KMwjVggESBDIyNzgYsnEgrhwo8v-SAzD5gZMDOEtAAVgBagdFQ09OT01ZcghLRkEyUEZETgozCNWCARIENjAxNhiuHCCzRCiJg5MDMPqDkwM4S0ABWAFqB0VDT05PTVlyCEtGQTJQRkROEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![](https://forever.travel-assets.com/flex/flexmanager/images/2026/02/06/expedia-sale-2026-desktop-us-ca.jpg?impolicy=fcrop&w=1400&h=600&q=mediumHigh) ## The Annual Vacation Sale Members save up to 40% on hotels and homes. Plan this year’s big trip and save. [Book now](https://expedia.com/deals?rfrr=FTG_SPRING_PROMO_) ## Alternative airports near Eureka Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.com/Flights-Search?leg1=from:TRI,to:ACV,departure:3/13/2026TANYT&leg2=from:ACV,to:TRI,departure:3/24/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ACV Arcata - Eureka Cheapest 20 min [Flights from $1,595 ](https://www.expedia.com/Flights-Search?leg1=from:TRI,to:ACV,departure:3/13/2026TANYT&leg2=from:ACV,to:TRI,departure:3/24/2026TANYT&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 Tri-Cities, TN (TRI-Tri-Cities Regional) to Eureka, CA (ACV-Arcata - Eureka) cost? ### What is the cheapest month to fly from Tri-Cities, TN (TRI-Tri-Cities Regional) to Eureka, CA (ACV-Arcata - Eureka)? ### Which airlines fly direct from Tri-Cities, TN (TRI-Tri-Cities Regional) to Eureka, CA (ACV-Arcata - Eureka)? ### What is the cheapest airline that flies from Tri-Cities, TN (TRI-Tri-Cities Regional) to Eureka, CA (ACV-Arcata - Eureka)? ### How do I find cheap flights from Tri-Cities, TN (TRI-Tri-Cities Regional) to Eureka, CA (ACV-Arcata - Eureka)? ### What is the best time to fly from Tri-Cities, TN (TRI-Tri-Cities Regional) to Eureka, CA (ACV-Arcata - Eureka)? ### What is the earliest flight from Tri-Cities, TN (TRI-Tri-Cities Regional) to Eureka, CA (ACV-Arcata - Eureka)? ### What day of the week has the most flights from Tri-Cities, TN (TRI-Tri-Cities Regional) to Eureka, CA (ACV-Arcata - Eureka)? ### What are the most popular departure times for flights from Tri-Cities, TN (TRI-Tri-Cities Regional) to Eureka, CA (ACV-Arcata - Eureka)? ### How long does it take to fly from Tri-Cities, TN (TRI-Tri-Cities Regional) to Eureka, CA (ACV-Arcata - Eureka)? ### Can you fly business or first class from Tri-Cities, TN (TRI-Tri-Cities Regional) to Eureka, CA (ACV-Arcata - Eureka)? ### How do I earn miles on a Tri-Cities, TN (TRI-Tri-Cities Regional) to Eureka, CA (ACV-Arcata - Eureka) flight with Expedia? ### What airports do you fly into for Eureka from Tri-Cities Regional (TRI)? ### Is it cheaper to buy a plane ticket from Tri-Cities, TN (TRI-Tri-Cities Regional) to Eureka, CA (ACV-Arcata - Eureka) at the last minute? ### Is it cheaper to book a Tri-Cities, TN (TRI-Tri-Cities Regional) to Eureka, CA (ACV-Arcata - Eureka) flight and hotel package? ### Can I cancel or change the date of my flight from Tri-Cities, TN (TRI-Tri-Cities Regional) to Eureka, CA (ACV-Arcata - Eureka)? ## Travel information | Origin airport | Tri-Cities Regional | | ------------------- | ------------------- | | Destination airport | Arcata - Eureka | | Roundtrip price | $697 | | Distance | 2247 mi | ## Book with confidence # Tri-Cities to Eureka Flights The cheapest times to fly from Tri-Cities to Eureka 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 Tri-Cities to Eureka are during the month of July. You can find some of the cheapest flights from Tri-Cities to Eureka with Expedia's search tool and vast selection of airlines. The best time to book a flight from Tri-Cities to Eureka Sunday is one of the best days to book for cheap flights from Tri-Cities to Eureka: 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 Tri-Cities to Eureka 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 Tri-Cities to Eureka in 2026\. You can also book with separate airlines for your outbound and return journeys, from $753 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 Tri-Cities to Eureka 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 Tri-Cities to Eureka 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\. 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