$169 Cheap Flights from Dayton (DAY) to Seattle (SEA)

View $169 flight on Sat, Dec 6, 2025Opens in a new window

Popular airlines from Dayton Intl. Airport (DAY) to Seattle-Tacoma International Airport (SEA)

    notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
    deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
    trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Dayton to Seattle (DAY-SEA)

Prices were available within the past 7 days and start at $169 for one-way flights and $283 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Fri, Nov 14 - Sat, Nov 15
DAY
Dayton
SEA
Seattle
$283 Roundtrip, found 5 hours ago
$283
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Fri, Nov 14 from Dayton to Seattle, returning Sat, Nov 15, priced at $283 found 5 hours ago
Delta
Thu, Dec 11 - Tue, Dec 16
DAY
Dayton
SEA
Seattle
$289 Roundtrip, found 1 hour ago
$289
Roundtrip
found 1 hour ago
Select Delta flight, departing Thu, Dec 11 from Dayton to Seattle, returning Tue, Dec 16, priced at $289 found 1 hour ago
United
Fri, Nov 21 - Sun, Nov 23
DAY
Dayton
SEA
Seattle
$289 Roundtrip, found 1 hour ago
$289
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Nov 21 from Dayton to Seattle, returning Sun, Nov 23, priced at $289 found 1 hour ago
United
Fri, Jan 9 - Mon, Jan 12
DAY
Dayton
SEA
Seattle
$294 Roundtrip, found 2 days ago
$294
Roundtrip
found 2 days ago
Select United flight, departing Fri, Jan 9 from Dayton to Seattle, returning Mon, Jan 12, priced at $294 found 2 days ago
Delta
Tue, Nov 11 - Tue, Nov 18
DAY
Dayton
SEA
Seattle
$303 Roundtrip, found 6 hours ago
$303
Roundtrip
found 6 hours ago
Select Delta flight, departing Tue, Nov 11 from Dayton to Seattle, returning Tue, Nov 18, priced at $303 found 6 hours ago
United
Wed, Nov 12 - Tue, Dec 2
DAY
Dayton
SEA
Seattle
$307 Roundtrip, found 20 hours ago
$307
Roundtrip
found 20 hours ago
Select United flight, departing Wed, Nov 12 from Dayton to Seattle, returning Tue, Dec 2, priced at $307 found 20 hours ago
United
Thu, Nov 20 - Sun, Nov 23
DAY
Dayton
SEA
Seattle
$308 Roundtrip, found 14 hours ago
$308
Roundtrip
found 14 hours ago
Select United flight, departing Thu, Nov 20 from Dayton to Seattle, returning Sun, Nov 23, priced at $308 found 14 hours ago
United
Wed, Nov 12 - Tue, Dec 2
DAY
Dayton
SEA
Seattle
$312 Roundtrip, found 20 hours ago
$312
Roundtrip
found 20 hours ago
Select United flight, departing Wed, Nov 12 from Dayton to Seattle, returning Tue, Dec 2, priced at $312 found 20 hours ago
United
Thu, Nov 20 - Sun, Nov 23
DAY
Dayton
SEA
Seattle
$314 Roundtrip, found 14 hours ago
$314
Roundtrip
found 14 hours ago
Select United flight, departing Thu, Nov 20 from Dayton to Seattle, returning Sun, Nov 23, priced at $314 found 14 hours ago
Alaska Airlines
Fri, Nov 14 - Sat, Nov 15
DAY
Dayton
SEA
Seattle
$373 Roundtrip, found 5 hours ago
$373
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Fri, Nov 14 from Dayton to Seattle, returning Sat, Nov 15, priced at $373 found 5 hours ago

Find the cheapest month to fly from Dayton (DAY) to Seattle (SEA)

April is typically the cheapest month to fly

From $236 - $605 per traveler.

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $404
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $404

Frequently asked questions

How much does a flight from James M. Cox Dayton Intl. Airport (DAY) to Seattle - Tacoma Intl. Airport (SEA) cost?
Snag a cheap one-way flight from $169 or cheap return flight from $283 from James M. Cox Dayton Intl. Airport (DAY) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from James M. Cox Dayton Intl. Airport (DAY) to Seattle - Tacoma Intl. Airport (SEA)?
The cheapest month to fly from DAY to SEA is November, when there's less demand. Off-peak months are usually when airlines offer better prices between these airports.
What is the cheapest airline that flies from James M. Cox Dayton Intl. Airport (DAY) to Seattle - Tacoma Intl. Airport (SEA)?
To find the cheapest airline flying from DAY to SEA, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from James M. Cox Dayton Intl. Airport (DAY) to Seattle - Tacoma Intl. Airport (SEA)?
Nonstop flights from James M. Cox Dayton Intl. Airport (DAY) to Seattle - Tacoma Intl. Airport (SEA) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from DAY to SEA?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from James M. Cox Dayton Intl. Airport (DAY) to Seattle - Tacoma Intl. Airport (SEA)?
To avoid possible delays on the James M. Cox Dayton Intl. Airport (DAY) to Seattle - Tacoma Intl. Airport (SEA) route, fly before 3 PM. Later flights have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from James M. Cox Dayton Intl. Airport (DAY) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Waiting until just before your trip to book a ticket from DAY to SEA generally means paying more. While you may find some last-minute discounts, there's no guarantee. Be flexible with your travel plans for a better chance of scoring a bargain.
Is it cheaper to book a DAY to SEA flight and hotel package?
Opting for a DAY to SEA flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Pick from our extensive range of accommodations and then add activities, car rentals and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from James M. Cox Dayton Intl. Airport (DAY) to Seattle - Tacoma Intl. Airport (SEA)?
If you reserved your DAY to SEA flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of fare you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more details.

Travel information

Origin airport
James M. Cox Dayton Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Roundtrip price
$283
Distance
1951 mi

Book with confidence

Dayton to Seattle Flights

The cheapest times to fly from Dayton to Seattle

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 Dayton to Seattle are during the month of November. You can find some of the cheapest flights from Dayton to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Dayton to Seattle

Sunday is one of the best days to book for cheap flights from Dayton to Seattle: 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 Dayton to Seattle

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 Dayton to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $169 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 Dayton to Seattle 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. Bundling together your Dayton to Seattle 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.

 

Dayton to Seattle Flights

Explore a world of travel with Expedia

*Available to One Key members.