$123 Cheap Flights from Madison (MSN) to Seattle (SEA)

View $123 flight on Thu, Apr 9, 2026Opens in a new window

Popular airlines from Dane County Regional Airport (MSN) 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 Madison to Seattle (MSN-SEA)

Prices were available within the past 7 days and start at $123 for one-way flights and $251 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, Feb 18 - Tue, Feb 24
MSN
Madison
SEA
Seattle
$251 Roundtrip, found 11 hours ago
$251
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Wed, Feb 18 from Madison to Seattle, returning Tue, Feb 24, priced at $251 found 11 hours ago
United
Wed, Feb 18 - Tue, Feb 24
MSN
Madison
SEA
Seattle
$251 Roundtrip, found 11 hours ago
$251
Roundtrip
found 11 hours ago
Select United flight, departing Wed, Feb 18 from Madison to Seattle, returning Tue, Feb 24, priced at $251 found 11 hours ago
United
Wed, Feb 25 - Wed, Mar 4
MSN
Madison
SEA
Seattle
$253 Roundtrip, found 4 days ago
$253
Roundtrip
found 4 days ago
Select United flight, departing Wed, Feb 25 from Madison to Seattle, returning Wed, Mar 4, priced at $253 found 4 days ago
American Airlines
Tue, Dec 9 - Sat, Dec 13
MSN
Madison
SEA
Seattle
$255 Roundtrip, found 1 day ago
$255
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Dec 9 from Madison to Seattle, returning Sat, Dec 13, priced at $255 found 1 day ago
United
Wed, Feb 18 - Tue, Feb 24
MSN
Madison
SEA
Seattle
$256 Roundtrip, found 11 hours ago
$256
Roundtrip
found 11 hours ago
Select United flight, departing Wed, Feb 18 from Madison to Seattle, returning Tue, Feb 24, priced at $256 found 11 hours ago
United
Wed, Jan 28 - Tue, Feb 3
MSN
Madison
SEA
Seattle
$258 Roundtrip, found 4 days ago
$258
Roundtrip
found 4 days ago
Select United flight, departing Wed, Jan 28 from Madison to Seattle, returning Tue, Feb 3, priced at $258 found 4 days ago
United
Tue, Dec 9 - Sat, Dec 13
MSN
Madison
SEA
Seattle
$260 Roundtrip, found 1 day ago
$260
Roundtrip
found 1 day ago
Select United flight, departing Tue, Dec 9 from Madison to Seattle, returning Sat, Dec 13, priced at $260 found 1 day ago
Frontier Airlines
Tue, Dec 23 - Sun, Jan 4
MSN
Madison
SEA
Seattle
$268 Roundtrip, found 2 days ago
$268
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Tue, Dec 23 from Madison to Seattle, returning Sun, Jan 4, priced at $268 found 2 days ago
Delta
Fri, Jan 23 - Tue, Jan 27
MSN
Madison
SEA
Seattle
$270 Roundtrip, found 1 hour ago
$270
Roundtrip
found 1 hour ago
Select Delta flight, departing Fri, Jan 23 from Madison to Seattle, returning Tue, Jan 27, priced at $270 found 1 hour ago
Alaska Airlines
Tue, Feb 3 - Tue, Feb 10
MSN
Madison
SEA
Seattle
$341 Roundtrip, found 1 day ago
$341
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, Feb 3 from Madison to Seattle, returning Tue, Feb 10, priced at $341 found 1 day ago

Black Friday Sale

Limited-time deals: Save up to 50% on select hotels.
Book now

Find the cheapest month to fly from Madison (MSN) to Seattle (SEA)

September is typically the cheapest month to fly

From $225 - $359 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 $359
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $359
Flights from Madison (MSN) to Seattle (SEA)
Origin airport
Dane County Regional
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Sun Country Airlines, United
Roundtrip price
$245
Distance
1616 mi

Madison to Seattle Flights

The cheapest times to fly from Madison 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 Madison to Seattle are during the month of February. You can find some of the cheapest flights from Madison to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Madison to Seattle

Sunday is one of the best days to book for cheap flights from Madison 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 Madison 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 Madison to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $123 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 Madison 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 Madison 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.

 

Frequently asked questions

How much does a flight from Dane County Regional Airport (MSN) to Seattle - Tacoma Intl. Airport (SEA) cost?
Secure a cheap one-way flight from $123 or cheap return flight from $251 from Dane County Regional Airport (MSN) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Dane County Regional Airport (MSN) to Seattle - Tacoma Intl. Airport (SEA)?
February is the cheapest month to fly from MSN to SEA. Timing your trip outside of the busy season is often the key to scoring lower fares.
What is the cheapest airline that flies from Dane County Regional Airport (MSN) to Seattle - Tacoma Intl. Airport (SEA)?
Use the filter tool on Expedia to compare different airlines and find the most affordable carrier that'll fly you from MSN to SEA. Then, sort your results by "Price (lowest to highest)" to snap up a good deal.
How many flights per day from Dane County Regional Airport (MSN) to Seattle - Tacoma Intl. Airport (SEA)?
There are no daily nonstop flights available from Dane County Regional Airport (MSN) to Seattle - Tacoma Intl. Airport (SEA). But you can opt for flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from MSN to SEA?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary based on a range of factors, including the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What airline has the least delays from MSN to SEA?
With 100% of journeys generally arriving as scheduled, Delta Air Lines has the best on-time performance for direct flights from Dane County Regional Airport (MSN) to Seattle - Tacoma Intl. Airport (SEA). To keep track of your flight status and receive notifications about any changes, simply head to the Expedia App.
What is the best time to fly from Dane County Regional Airport (MSN) to Seattle - Tacoma Intl. Airport (SEA)?
To arrive at Seattle - Tacoma Intl. Airport (SEA) without delays, select a flight that takes off from Dane County Regional Airport (MSN) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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 Dane County Regional Airport (MSN) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Waiting until just before your trip to book your flight from MSN to SEA often results in higher prices. While you may come across some last-minute deals, they aren't always guaranteed. Be flexible with your itinerary to boost your chances of landing a bargain.
Is it cheaper to book a MSN to SEA flight and hotel package?
Securing a MSN to SEA flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Pick from our extensive range of hotels and then add activities, flights and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Dane County Regional Airport (MSN) to Seattle - Tacoma Intl. Airport (SEA)?
If you booked your MSN to SEA flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you want more information.

Explore a world of travel with Expedia

*Available to One Key members.