Title: Cheap Flights from Dayton to Seattle (DAY to SEA) - Expedia.co.uk ![](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 Dayton (DAY) to Seattle (SEA) - [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 ## Popular airlines from Dayton Intl. Airport (DAY) to Seattle-Tacoma International Airport (SEA) - ![Alaska Airlines](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:day,to:sea,departure:01/11/2025TANYT&leg2=from:sea,to:day,departure:08/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![Delta](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:day,to:sea,departure:01/11/2025TANYT&leg2=from:sea,to:day,departure:08/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![American Airlines](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:day,to:sea,departure:01/11/2025TANYT&leg2=from:sea,to:day,departure:08/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![United](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:day,to:sea,departure:01/11/2025TANYT&leg2=from:sea,to:day,departure:08/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) ![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 25% 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.co.uk/login) ## Find the cheapest month to fly from Dayton (DAY) to Seattle (SEA) ### April is typically the cheapest month to fly From £176 - £450 per traveller. ## Frequently asked questions ### How much is a flight from James M. Cox Dayton Intl. Airport (DAY) to Sea-Tac Airport? > Start packing your suitcase, because round-trip journeys from Dayton Intl. Airport to Seattle - Tacoma Intl. Airport (SEA) start from . That's based on airfares listed within the last 7 days on Expedia for flights departing within the next year. Prices can rise quickly, so book today to score the best deal. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from DAY to Sea-Tac Airport? > Most flights can be cancelled online, but whether you incur a fee differs between airlines. If you do need to cancel your break, follow the easy instructions in the [Customer Service Portal](https://www.expedia.co.uk/service/?langid=1033). ### How do I find cheap flights from James M. Cox Dayton Intl. Airport (DAY) to SEA that have flexible change policies? > Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Dayton Intl. Airport to Sea-Tac Airport flights, you'll see a "no change fees" filter for you to select. ### How far is the flight from James M. Cox Dayton Intl. Airport (DAY) to Sea-Tac Airport? > The flight distance from Vandalia to SeaTac is 3,100 kilometres. Pack yourself a drink, a few snacks and a few good podcasts. Keep yourself entertained and time will zip by. ### Which airlines fly direct from James M. Cox Dayton Intl. Airport (DAY) to Seattle - Tacoma Intl. Airport (SEA)? > If you want to fly straight from DAY to Seattle - Tacoma Intl. Airport (SEA), you'll need to book a flight with at least one stop. Unfortunately, there aren't any airlines that fly directly between these airports. ### Are James M. Cox Dayton Intl. Airport (DAY) to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute? > Booking your trip from DAY to SEA last minute could be your ticket to a fantastic deal. However, it could end up costing a good deal more! If you'd prefer not to take any chances, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to 12 months in advance. If your preferred carrier hasn't released tickets yet, check back frequently as deals are updated on Expedia all the time. ## Travel information | Origin airport | James M. Cox Dayton Intl. | | --- | --- | | Destination airport | Seattle - Tacoma Intl. | | Distance | 3122 km | ## Book with confidence ### Compare flights from Dayton to Seattle easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from Dayton to Seattle. Operating between them flights per day, airlines cover the route. And fly direct, getting you to Seattle - Tacoma Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from James M. Cox Dayton Intl. to Seattle - Tacoma Intl..   To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights.  Grab a great deal on your flight from James M. Cox Dayton Intl. (DAY) to Seattle - Tacoma Intl. (SEA) The easiest way to view the best deals on flights from Dayton to Seattle today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from James M. Cox Dayton Intl. to Seattle - Tacoma Intl. start at just and range up to .   To find an even better deal, try   - being flexible on your dates – midweek flights can be cheaper - looking for other airports near Dayton and Seattle - booking your flight during , the cheapest month on this route - varying your flight times – early morning and late at night are sometimes cheaper  Why you should book your Dayton to Seattle flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from James M. Cox Dayton Intl. to Seattle - Tacoma Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.   Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. 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