Title: Cheap Flights to Index - Expedia.co.uk ![Pacific Northwest Fall Season Landscape of Mountain River and Autumn Color Trees](https://images.trvl-media.com/place/6336248/b6b66f61-6ac4-4e4d-b754-92f92c7570ce.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/6336248/b6b66f61-6ac4-4e4d-b754-92f92c7570ce.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # £294 Cheap Flights to Index [View £294 flight on Sat, 7 Mar 2026](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:LHR,to:SEA,departure:07/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:293.19&airProductToken=AQpkCi8I16YBEgExGOuJASCYFij6_oYDMIyDhwM4RUAAWAFqBUJBU0lDcghMUzdKNEFCSwoxCNemARIEMTU1MhiYFiCSASitjIcDMJ-NhwM4RUABWAFqBUJBU0lDcghMUzdKNEFCSxIKCAEQARgBKgJXUxgBIgQIARABKAIoAygEMAE) - [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 Index](https://expedia.co.uk/Index-Hotels.d6336248.Travel-Guide-Hotels)[Index Car Hire](https://expedia.co.uk/Compare-Cheap-Car-Hire-In-Index.d6336248.Car-Hire-Guide)[Index Holidays](https://expedia.co.uk/Index.d6336248.Holidays-City-Breaks) ## Popular airlines to Index - ![](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:Index, Washington, United States of America,departure:21/02/2026TANYT&leg2=from:Index, Washington, United States of America,to:CMH,departure:28/02/2026TANYT&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:Index, Washington, United States of America,departure:21/02/2026TANYT&leg2=from:Index, Washington, United States of America,to:CMH,departure:28/02/2026TANYT&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:Index, Washington, United States of America,departure:21/02/2026TANYT&leg2=from:Index, Washington, United States of America,to:CMH,departure:28/02/2026TANYT&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:Index, Washington, United States of America,departure:21/02/2026TANYT&leg2=from:Index, Washington, United States of America,to:CMH,departure:28/02/2026TANYT&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:Index, Washington, United States of America,departure:21/02/2026TANYT&leg2=from:Index, Washington, United States of America,to:CMH,departure:28/02/2026TANYT&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:Index, Washington, United States of America,departure:21/02/2026TANYT&leg2=from:Index, Washington, United States of America,to:CMH,departure:28/02/2026TANYT&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:Index, Washington, United States of America,departure:21/02/2026TANYT&leg2=from:Index, Washington, United States of America,to:CMH,departure:28/02/2026TANYT&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 Index Prices were available within the past 7 days and start at £294 for one-way flights and £304 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) Thu, 19 Feb - Mon, 2 Mar LGW London SEA Seattle £304 Return just found [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LGW,to:SEA,departure:19/02/2026TANYT&leg2=from:SEA,to:LGW,departure:02/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:303.33&airProductToken=AQplCjEIxpIBEgM0NzEYy7EBIIopKMvJhQMwmMuFAzhOQABYAWoFTElHSFRyCE5KMlZHQkxUCjAIxpIBEgM2ODEYiikgkgEo_MuFAzDcz4UDOE5AAVgBagVMSUdIVHIITkoyVkdCTFQKZQowCMaSARIDNjgwGJIBIIopKKvKhgMw982GAzhOQABYAWoFTElHSFRyCE5KMlZHQkxUCjEIxpIBEgM0NzAYiikgy7EBKMzOhgMwj9CGAzhOQAFYAWoFTElHSFRyCE5KMlZHQkxUEgoIARABGAEqAkZJGAEiBAgBEAEoAigDKAQwAQ) ![KLM](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/KL.gif) Wed, 18 Feb - Tue, 31 Mar LHR London SEA Seattle £384 Return found 4 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:SEA,departure:18/02/2026TANYT&leg2=from:SEA,to:LHR,departure:31/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:383.65&airProductToken=AQp1CjMIy5gBEgQxMDAwGOuJASCAkwEo5ruFAzC2vIUDOExAAFgBagVMSUdIVHIIVlkyNkRITFcKPgjLmAESBDYwMzMYgJMBIJIBKIu9hQMw_MGFAzhWQAFYAWoFTElHSFRyCFZZMjZESExXegoIxJgBEgQ2MDMzCkAKPgjLmAESBDYwMjEYkgEg64kBKL2TiQMwi5iJAzhWQABYAWoFTElHSFRyCFZZMjZESExXegoIxJgBEgQ2MDIxEgoIARABGAEqAktMGAEiBAgBEAEoAigDKAQwDQ) ![Air France](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AF.gif) Wed, 18 Feb - Tue, 31 Mar LHR London SEA Seattle £388 Return found 4 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:SEA,departure:18/02/2026TANYT&leg2=from:SEA,to:LHR,departure:31/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:387.65&airProductToken=AQpzCjIIwYwBEgQxMzgxGOuJASDiMCjcu4UDMKy8hQM4TEAAWAFqBUxJR0hUcghWWTI2REhMVwo9CMGMARIEMzYyMhjiMCCSASjWvYUDMODChQM4VkABWAFqBUxJR0hUcghWWTI2REhMV3oKCMSYARIEMzYyMgpACj4IwYwBEgQzNjAzGJIBIOuJASi9k4kDMIuYiQM4VkAAWAFqBUxJR0hUcghWWTI2REhMV3oKCMSYARIEMzYwMxIKCAEQARgBKgJBRhgBIgQIARABKAIoAygEMA0) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Wed, 18 Feb - Tue, 31 Mar LHR London SEA Seattle £393 Return found 4 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:SEA,departure:18/02/2026TANYT&leg2=from:SEA,to:LHR,departure:31/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:392.95&airProductToken=AQpsCjUIzJABEgQyNDg1GOuJASCMFSjru4UDMNm8hQM4S0AAWAFqCEVDT0xJR0hUcghLREVRQVhCUQozCMyQARIDNDg4GIwVIJIBKOC9hQMw4MKFAzhLQAFYAWoIRUNPTElHSFRyCEtERVFBWEJRCoUBCkAIzJABEgQ3NTM3GJIBIK4cKISQiQMw_5GJAzhLQABYAWoIRUNPTElHSFRyCEtERVFBWEJRegoI1YIBEgQ3NTM3CkEIzJABEgQ5MzU1GK4cIOuJASiskokDMKWWiQM4S0ABWAFqCEVDT0xJR0hUcghLREVRQVhCUXoKCNWCARIEOTM1NRIKCAIQARgCKgJMSBgBIgQIARABKAIoAygEMAs) ![Virgin Atlantic](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/VS.gif) Wed, 18 Feb - Mon, 2 Mar LCY London SEA Seattle £422 Return found 5 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LCY,to:SEA,departure:18/02/2026TANYT&leg2=from:SEA,to:LCY,departure:02/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:421.51&airProductToken=AQrAAQo_CNamARIENzAyNBjLwAEggJMBKLi9hQMw-b2FAzhUQABYAWoFTElHSFRyCE9ZMjZES0xXegoIy5gBEgQ3MDI0Cj4I1qYBEgQ3MTMwGICTASCpUSjOvoUDML3ChQM4VEABWAFqBUxJR0hUcghPWTI2REtMV3oKCMuYARIENzEzMAo9CNamARIEMzE1OBipUSCSASj7w4UDMP7GhQM4VEABWAFqBUxJR0hUcghPWTI2REtMV3oKCMSYARIEMzE1OAqBAQo-CNamARIEMzkzNhiSASCAkwEoycqGAzCcz4YDOFRAAFgBagVMSUdIVHIIT1kyNkRLTFd6CgjEmAESBDM5MzYKPwjWpgESBDcwMzgYgJMBIMvAASjU0oYDMJDThgM4VEABWAFqBUxJR0hUcghPWTI2REtMV3oKCMuYARIENzAzOBIKCAEQARgBKgJWUxgBIgQIARABKAIoAygEMAE) ## 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. ## Expedia flights to Index Searching for cheap flights to Index? No travel company presents more choices than Expedia if you're looking to compare flights to Index. 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 Index. 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 Index 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 Index 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 Index's airport? ### What airport is best to fly into Index? ### How many airlines fly to Index? ### Which airlines fly to Index? ### How many nonstop flights are there to Index? ### Where are the most popular flights to Index departing from? ### How long is the flight to Index Airport? ### How to book the cheapest flight to Index? ### Do you have any tips for my flight to Index? > - The trick to having a pain-free travel experience is to plan ahead. So, let's start with the basics: passport, travel documents, cash and medications. Next, bring on board items that'll help pass the time, like some electronic devices or a good book. It's also a wise idea to bring your chargers, a comfy neck pillow and a pair of noise-cancelling headphones. Finally, don't forget to toss in toiletries like a toothbrush, lip balm and a clean T-shirt. > > > 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 sharp, flammable or explosive. This includes screwdrivers, blades, fuel and fireworks. Sporting equipment like ski poles, and items that could harm passengers, such as swords and guns, can't come on board with you either. > > > What to wear on a flight: > > > - Your aim is to be as comfortable as you can. Choose shoes that are easy to pull on and off, dress in loose, breathable clothing and remember to bring a sweater in case it gets cold in the cabin. > - Most of us have heard about deep vein thrombosis (DVT), a blood clotting condition caused by prolonged periods of sitting. To minimize your risk on board, drink plenty of water, consider wearing compression socks and do gentle foot and leg exercises in your seat. ### How to get through airport security fast when flying to Index? > - First things first. Your boarding pass and travel ID will need to be inspected by airport security. Have them easily accessible so you don't hold up the queue. > - Next up is the X-ray machine. Remove anything on you that is likely to set off the scanner's alarm. This includes items like headphones or earphones, as well as bulky coats or jackets. They'll need to be placed on the conveyor belt for screening. > - All your electronics, including your tablet and phone, are also required to be scanned separately. > - Remember to remove liquids and gels from your hand luggage. They often need to be sent through the X-ray separately. Each item should be in a container no larger than 3.4 ounces (100 millilitres) and everything must fit inside a single quart-size (one litre), clear zip-lock bag. > - Lightweight sneakers are a great footwear choice as you're less likely to have to remove them when going through security. Boots and other heavy-style shoes are usually subjected to additional screening. > - Airlines will not allow any pocket knives or other sharp items in the cabin. If you must bring these kinds of items, pack them in your checked baggage. __Flights to Index information__ | Destination airport | Seattle - Tacoma Intl. | | ----------------------------- | ---------------------- | | Destination airport IATA code | SEA | | Destination city name | Seattle | | Return price | £303 | ## Trending flights to Index Prices were available within the past 7 days and start at £294 for one-way flights and £304 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) Thu, 19 Feb - Mon, 2 Mar LGW London SEA Seattle £304 Return just found [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LGW,to:SEA,departure:19/02/2026TANYT&leg2=from:SEA,to:LGW,departure:02/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:303.33&airProductToken=AQplCjEIxpIBEgM0NzEYy7EBIIopKMvJhQMwmMuFAzhOQABYAWoFTElHSFRyCE5KMlZHQkxUCjAIxpIBEgM2ODEYiikgkgEo_MuFAzDcz4UDOE5AAVgBagVMSUdIVHIITkoyVkdCTFQKZQowCMaSARIDNjgwGJIBIIopKKvKhgMw982GAzhOQABYAWoFTElHSFRyCE5KMlZHQkxUCjEIxpIBEgM0NzAYiikgy7EBKMzOhgMwj9CGAzhOQAFYAWoFTElHSFRyCE5KMlZHQkxUEgoIARABGAEqAkZJGAEiBAgBEAEoAigDKAQwAQ) \*Available to Expedia members.