$207 Cheap Flights from Seattle (SEA) to Lafayette (LAF)

View $207 flight on Wed, Nov 5, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Lafayette, IN (LAF-Purdue University)

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Cheap Flights from Seattle to Lafayette (SEA-LAF)

Prices were available within the past 7 days and start at $207 for one-way flights and $309 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, Oct 3 - Mon, Oct 6
SEA
Seattle
LAF
Lafayette
$309 Roundtrip, found 21 hours ago
$309
Roundtrip
found 21 hours ago
Select United flight, departing Fri, Oct 3 from Seattle to Lafayette, returning Mon, Oct 6, priced at $309 found 21 hours ago
United
Fri, Oct 3 - Mon, Oct 6
SEA
Seattle
LAF
Lafayette
$315 Roundtrip, found 21 hours ago
$315
Roundtrip
found 21 hours ago
Select United flight, departing Fri, Oct 3 from Seattle to Lafayette, returning Mon, Oct 6, priced at $315 found 21 hours ago
United
Thu, Oct 2 - Sat, Oct 4
SEA
Seattle
LAF
Lafayette
$334 Roundtrip, just found
$334
Roundtrip
just found
Select United flight, departing Thu, Oct 2 from Seattle to Lafayette, returning Sat, Oct 4, priced at $334 just found
United
Thu, Oct 2 - Sat, Oct 4
SEA
Seattle
LAF
Lafayette
$340 Roundtrip, just found
$340
Roundtrip
just found
Select United flight, departing Thu, Oct 2 from Seattle to Lafayette, returning Sat, Oct 4, priced at $340 just found
United
Thu, Oct 2 - Sat, Oct 4
SEA
Seattle
LAF
Lafayette
$344 Roundtrip, just found
$344
Roundtrip
just found
Select United flight, departing Thu, Oct 2 from Seattle to Lafayette, returning Sat, Oct 4, priced at $344 just found
United
Thu, Oct 2 - Sat, Oct 4
SEA
Seattle
LAF
Lafayette
$349 Roundtrip, just found
$349
Roundtrip
just found
Select United flight, departing Thu, Oct 2 from Seattle to Lafayette, returning Sat, Oct 4, priced at $349 just found
United
Fri, Oct 3 - Mon, Oct 6
SEA
Seattle
LAF
Lafayette
$350 Roundtrip, found 21 hours ago
$350
Roundtrip
found 21 hours ago
Select United flight, departing Fri, Oct 3 from Seattle to Lafayette, returning Mon, Oct 6, priced at $350 found 21 hours ago
United
Fri, Sep 26 - Tue, Sep 30
SEA
Seattle
LAF
Lafayette
$352 Roundtrip, found 6 days ago
$352
Roundtrip
found 6 days ago
Select United flight, departing Fri, Sep 26 from Seattle to Lafayette, returning Tue, Sep 30, priced at $352 found 6 days ago
United
Thu, Oct 9 - Sun, Oct 12
SEA
Seattle
LAF
Lafayette
$357 Roundtrip, found 2 days ago
$357
Roundtrip
found 2 days ago
Select United flight, departing Thu, Oct 9 from Seattle to Lafayette, returning Sun, Oct 12, priced at $357 found 2 days ago
United
Sat, Sep 27 - Wed, Oct 1
SEA
Seattle
LAF
Lafayette
$365 Roundtrip, found 4 days ago
$365
Roundtrip
found 4 days ago
Select United flight, departing Sat, Sep 27 from Seattle to Lafayette, returning Wed, Oct 1, priced at $365 found 4 days ago
Flights from Seattle (SEA) to Lafayette (LAF)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Purdue University
Airlines serving
United
Roundtrip price
$309
Distance
1808 mi

Seattle to Lafayette Flights

The cheapest times to fly from Seattle to Lafayette

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

 

The best time to book a flight from Seattle to Lafayette

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

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 Seattle to Lafayette in 2025. You can also book with separate airlines for your outbound and return journeys, from $207 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 Seattle to Lafayette 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 Seattle to Lafayette 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 Seattle - Tacoma Intl. Airport (SEA) to Lafayette, IN (LAF-Purdue University) cost?
Secure a cheap one-way flight from $207 or cheap return flight from $309 from Seattle - Tacoma Intl. Airport (SEA) to Lafayette, IN (LAF-Purdue University) 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 Seattle - Tacoma Intl. Airport (SEA) to Lafayette, IN (LAF-Purdue University)?
Planning your trip for October is a good way to save, as it's the cheapest month for flights between SEA and LAF. You'll typically find the lowest prices during off-peak months.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Lafayette, IN (LAF-Purdue University)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll take you from SEA to LAF. Then, sort your results by "Price (lowest to highest)" to snag the best deal available.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Lafayette, IN (LAF-Purdue University)?
Nonstop flights from Seattle - Tacoma Intl. Airport (SEA) to Lafayette, IN (LAF-Purdue University) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SEA to LAF?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change depending on a number of factors, such as the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Lafayette, IN (LAF-Purdue University)?
To arrive at Lafayette, IN (LAF-Purdue University) on time, opt for a flight that leaves Seattle - Tacoma Intl. Airport (SEA) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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.
What airports do you fly into for West Lafayette from Seattle - Tacoma Intl. Airport (SEA)?
If you're on a direct flight from Seattle - Tacoma Intl. Airport (SEA) to West Lafayette, Indianapolis Intl. Airport (IND) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Lafayette, IN (LAF-Purdue University) last-minute?
Holding off until right before your break to book a ticket from SEA to LAF generally means paying more. While you might find some last-minute deals, there's no guarantee. Allow some flexibility in your schedule to maximize your chances of getting a bargain.
Is it cheaper to book a SEA to LAF flight and hotel package?
Compared with arranging flights and hotels separately, booking a SEA to LAF flight and hotel package with Expedia could result in significant savings. What's more, having everything in one place will take the hassle out of planning your trip. Just pick your flights and select from our wide range of hotels, then personalize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Lafayette, IN (LAF-Purdue University)?
In most cases, you're able to cancel or reschedule your SEA to LAF flight. However, additional fees may apply, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you need further information, go to our Customer Service portal.

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*Available to One Key members.