Title: Cheap Flights to Black Diamond - Expedia.co.uk ![Lake Wilderness - Maple Valley Washington Panoramic Aerial Photo](https://images.trvl-media.com/place/3000460789/b7974517-f98a-43c1-803a-7aa308ea0098.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/3000460789/b7974517-f98a-43c1-803a-7aa308ea0098.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # £303 Cheap Flights to Black Diamond [View £303 flight on Thu, 5 Mar 2026](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:LHR,to:SEA,departure:05/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:302.09&airProductToken=AQpkCi8I16YBEgExGOuJASCYFii66IYDMMzshgM4RUAAWAFqBUJBU0lDcghMUzdKNEFCSwoxCNemARIEMTU1MhiYFiCSASip9oYDMJv3hgM4RUABWAFqBUJBU0lDcghMUzdKNEFCSxIKCAEQARgBKgJXUxgBIgQIARABKAIoAygEMAE) - [Return](?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 [Hotels in Black Diamond](https://expedia.co.uk/Black-Diamond-Hotels.d3000460789.Travel-Guide-Hotels)[Black Diamond Car Hire](https://expedia.co.uk/Compare-Cheap-Car-Hire-In-Black-Diamond.d3000460789.Car-Hire-Guide)[Black Diamond Holidays](https://expedia.co.uk/Black-Diamond.d3000460789.Holidays-City-Breaks) ## Popular airlines to Black Diamond - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg) Alaska Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:Black Diamond, Washington, United States of America,departure:01/03/2026TANYT&leg2=from:Black Diamond, Washington, United States of America,to:CMH,departure:08/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:Black Diamond, Washington, United States of America,departure:01/03/2026TANYT&leg2=from:Black Diamond, Washington, United States of America,to:CMH,departure:08/03/2026TANYT&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_DL.svg) Delta [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:Black Diamond, Washington, United States of America,departure:01/03/2026TANYT&leg2=from:Black Diamond, Washington, United States of America,to:CMH,departure:08/03/2026TANYT&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_UA.svg) United [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:Black Diamond, Washington, United States of America,departure:01/03/2026TANYT&leg2=from:Black Diamond, Washington, United States of America,to:CMH,departure:08/03/2026TANYT&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.co.uk/Flights-Search?leg1=from:CMH,to:Black Diamond, Washington, United States of America,departure:01/03/2026TANYT&leg2=from:Black Diamond, Washington, United States of America,to:CMH,departure:08/03/2026TANYT&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_F9.svg) Frontier Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:Black Diamond, Washington, United States of America,departure:01/03/2026TANYT&leg2=from:Black Diamond, Washington, United States of America,to:CMH,departure:08/03/2026TANYT&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_AC.svg) Air Canada [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:Black Diamond, Washington, United States of America,departure:01/03/2026TANYT&leg2=from:Black Diamond, Washington, United States of America,to:CMH,departure:08/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![](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 25% 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 rewards [Sign in](https://www.expedia.co.uk/login) ## Cheap round-trip flights to Black Diamond Prices were available within the past 7 days and start at £303 for one-way flights and £326 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![Icelandair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/fi.gif) Mon, 16 Mar - Mon, 30 Mar LHR London SEA Seattle £326 Return found 4 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:SEA,departure:16/03/2026TANYT&leg2=from:SEA,to:LHR,departure:30/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:325.84&airProductToken=AQplCjEIxpIBEgM0NTUY64kBIIopKPPmhwMwu-iHAzhYQABYAWoFTElHSFRyCFhKMlZHQkxUCjAIxpIBEgM2ODEYiikgkgEovPCHAzCc9IcDOFhAAVgBagVMSUdIVHIIWEoyVkdCTFQKZQowCMaSARIDNjgwGJIBIIopKLCFiQMw94iJAzhYQABYAWoFTElHSFRyCFhKMlZHQkxUCjEIxpIBEgM0NTAYiikg64kBKMyJiQMwj4uJAzhYQAFYAWoFTElHSFRyCFhKMlZHQkxUEgoIARABGAEqAkZJGAEiBAgBEAEoAigDKAQwAQ) ![Scandinavian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SK.gif) Fri, 22 May - Sat, 30 May DUB Dublin SEA Seattle £357 Return found 6 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:DUB,to:SEA,departure:22/05/2026TANYT&leg2=from:SEA,to:DUB,departure:30/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:356.60&airProductToken=AQplCjEI05YBEgQyNTM4GIMNIOI7KL3XjQMwv9iNAzhUQABYAWoFTGlnaHRyCFRMRVU2R0hUCjAI05YBEgM5MzcY4jsgkgEoud-NAzD9440DOFRAAVgBagVMaWdodHIIVExFVTZHSFQKZQowCNOWARIDOTM4GJIBIOI7KN-zjgMwiriOAzhUQABYAWoFTGlnaHRyCFRMRVU2R0hUCjEI05YBEgQyNTM3GOI7IIMNKKm7jgMwsLyOAzhUQAFYAWoFTGlnaHRyCFRMRVU2R0hUEgoIARABGAEqAlNLGAEiBAgBEAEoAigDKAQwDw) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Wed, 4 Nov - Wed, 11 Nov DUB Dublin SEA Seattle £364 Return found 3 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:DUB,to:SEA,departure:04/11/2026TANYT&leg2=from:SEA,to:DUB,departure:11/11/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:363.51&airProductToken=AQplCjEIwoIBEgM4MjUYgw0g64kBKNKenAMwsZ-cAzhPQABYAWoFTk9CQUdyCE9MTjdFOEJXCjAIwoIBEgI0ORjriQEgkgEov6GcAzCXppwDOE9AAVgBagVOT0JBR3IIT0xON0U4QlcKZQowCMKCARICNDgYkgEg64kBKOr1nAMwpPqcAzhPQABYAWoFTk9CQUdyCE9MTjdFOEJXCjEIwoIBEgM4MzgY64kBIIMNKIz9nAMw4f2cAzhPQAFYAWoFTk9CQUdyCE9MTjdFOEJXEgoIARABGAEqAkJBGAEiBAgBEAEoAigDMA0) ![Iberia](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/IB.gif) Wed, 4 Nov - Wed, 11 Nov DUB Dublin SEA Seattle £372 Return found 3 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:DUB,to:SEA,departure:04/11/2026TANYT&leg2=from:SEA,to:DUB,departure:11/11/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:371.60&airProductToken=AQqAAQo-CMmEARIENDI0NRiDDSCjsQEozKCcAzCfpZwDOE9AAFgBagVCQVNJQ3IIT0xON0U4Qld6CgjBggESBDQyNDUKPgjJhAESBDQzMjIYo7EBIJIBKICnnAMwiamcAzhPQAFYAWoFQkFTSUNyCE9MTjdFOEJXegoIwYIBEgQ0MzIyCoABCj4IyYQBEgQ0MDg2GJIBIKOxASi78JwDMLHynAM4T0AAWAFqBUJBU0lDcghPTE43RThCV3oKCMGCARIENDA4Ngo-CMmEARIENDM4NhijsQEggw0o-vOcAzDz95wDOE9AAVgBagVCQVNJQ3IIT0xON0U4Qld6CgjBggESBDQzODYSCggCEAEYAioCSUIYASIECAEQASgCKAMoBDAN) ![Aer Lingus](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/EI.gif) Mon, 23 Feb - Sun, 8 Mar DUB Dublin SEA Seattle £373 Return found 6 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:DUB,to:SEA,departure:23/02/2026TANYT&leg2=from:SEA,to:DUB,departure:08/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:372.31&airProductToken=AQowCi4IxZIBEgI1MxiDDSCSASje-IUDMKz9hQM4T0AAWAFqBFNBVlJyCE9MTjdFOEI0CjAKLgjFkgESAjUyGJIBIIMNKLWQhwMw1pSHAzhPQABYAWoEU0FWUnIIT0xON0U4QjQSCggBEAEYASoCRUkYASIECAEQASgCKAMoBDAN) ## Find the cheapest month to fly from Columbus (CMH) to Seattle (SEA) ### October is typically the cheapest month to fly From £104 - £164 per traveller. ![](https://forever.travel-assets.com/flex/flexmanager/images/2026/02/06/expedia-sale-2026-desktop-uk-fr-de.jpg?impolicy=fcrop&w=1400&h=600&q=mediumHigh) ## The Annual Holiday Sale Members save up to 40% on hotels and holiday homes. Plan this year’s big trip and save. [Book now](https://expedia.co.uk/cheap-deals?rfrr=FTG_SPRING_PROMO_) ## Expedia flights to Black Diamond Searching for cheap flights to Black Diamond? No travel company presents more choices than Expedia if you're looking to compare flights to Black Diamond. With more airlines, cheaper flights, fewer stops, and more departure and arrival times travellers should ensure they search on Expedia before any holiday to Washington. Expedia provides the cheapest flights to many destinations in Washington and you may find even greater savings if you combine your flight with a hotel stay in Black Diamond. Expedia is the largest online travel agency which means that Expedia have access to cheap flights. So make sure you check Expedia regularly for these bargain flights because the cheapest airline tickets sell out fast. Expedia is not only free for everyone to use but it quick and easy to use. Find the lowest flight prices guaranteed and book directly through Expedia. Browse through hundreds of cheap flight offers to find the one that suits your budget by simply inputting your travel dates. Expedia will then find the cheapest flights to Black Diamond for that period and let you choose your preferred time and airline. If you need additional assistance, Expedia Customer Service representatives are available from 8am - 10pm Monday to Friday, and 9am - 10pm at weekends. Our capable staff will be able to help you with any questions regarding your Black Diamond flight, or other booking questions that may arise. When you book flights with Expedia you can rest assured that you have booked the best flight at the lowest price. ## Frequently asked questions ### What is the name of Black Diamond's airport? ### How far is Seattle - Tacoma Intl. Airport (SEA) from central Black Diamond? ### What airport is best to fly into Black Diamond? ### How many airlines fly to Black Diamond? ### Which airlines fly to Black Diamond? ### How many nonstop flights are there to Black Diamond? ### Where are the most popular flights to Black Diamond departing from? ### How long is the flight to Black Diamond Airport? ### How to book the cheapest flight to Black Diamond? ### Do you have any tips for my flight to Black Diamond? > - First and foremost, pack your passport, travel docs, bank cards and medications. Next, you'll need some in-flight entertainment to while away the time. A thrilling book and a tablet crammed with your favourite shows are some terrific options. If you intend to catch a few z's, a quality neck pillow and some noise-cancelling headphones will also come in handy. Finally, find room for a few toiletry items to ensure you hop off the plane looking fresh and ready to go. > > > Do not pack the following items in your hand luggage: > > > - While the list of prohibited items differs between airlines, the general rule of thumb is nothing flammable, sharp or explosive. This includes screwdrivers, knives, fuels and bleaching agents. Sports equipment like ice skates, and items that could harm other people, such as swords and batons, can't come on board with you either. > > > What to wear on a flight: > > > - Comfort should be your highest priority when deciding what to wear during your flight. Loose, breathable clothing is a smart option, as are roomy, closed-toe shoes. > - Most travellers have heard about deep vein thrombosis (DVT), a blood clot condition caused by prolonged periods of inactivity. To minimize your risk on board, drink lots of water, consider wearing compression socks and move your legs and feet often. ### How to get through airport security fast when flying to Black Diamond? > - Have your travel documents and passport easily accessible. They're the first items you'll be asked for by security. > - The X-ray machine comes next. Remove anything metal on you that is likely to set off the scanner's alarm. This includes items like earphones or headphones, as well as heavy coats or jackets. They'll all need to go on the X-ray conveyor belt. > - For just a few minutes, you'll have to unplug from technology. Your phone, tablet and any other electronics must also go through the scanner. > - Any liquids or gels, such as shampoo or hand cream, that you want to take on board need to be in containers no larger than 3.4 ounces (100 millilitres). Also, everything must fit inside a quart-size (one litre), clear zip-lock bag. > - Choosing your footwear wisely can save you valuable minutes. Boots are often required to be removed and X-rayed separately. Slip-on shoes usually aren't. > - Sharp or pointed objects (like knives and scissors) are not allowed in the cabin. They'll be confiscated at security, so put them in your checked bags. __Flights to Black Diamond information__ | Destination airport | Seattle - Tacoma Intl. | | ----------------------------- | ---------------------- | | Destination airport IATA code | SEA | | Destination city name | Seattle | | Return price | £326 | ## Trending flights to Black Diamond Prices were available within the past 7 days and start at £303 for one-way flights and £326 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![Icelandair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/fi.gif) Mon, 16 Mar - Mon, 30 Mar LHR London SEA Seattle £326 Return found 4 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:SEA,departure:16/03/2026TANYT&leg2=from:SEA,to:LHR,departure:30/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:325.84&airProductToken=AQplCjEIxpIBEgM0NTUY64kBIIopKPPmhwMwu-iHAzhYQABYAWoFTElHSFRyCFhKMlZHQkxUCjAIxpIBEgM2ODEYiikgkgEovPCHAzCc9IcDOFhAAVgBagVMSUdIVHIIWEoyVkdCTFQKZQowCMaSARIDNjgwGJIBIIopKLCFiQMw94iJAzhYQABYAWoFTElHSFRyCFhKMlZHQkxUCjEIxpIBEgM0NTAYiikg64kBKMyJiQMwj4uJAzhYQAFYAWoFTElHSFRyCFhKMlZHQkxUEgoIARABGAEqAkZJGAEiBAgBEAEoAigDKAQwAQ) \*Available to Expedia members.