$237 Cheap Flights from Seattle (SEA) to Lafayette (LAF)

View $237 flight on Thu, Nov 27, 2025Opens in a new window

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

Cheap Flights from Seattle to Lafayette (SEA-LAF)

Prices were available within the past 7 days and start at $237 for one-way flights and $374 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Sep 10 - Thu, Sep 25
SEA
Seattle
LAF
Lafayette
$374 Roundtrip, found 11 hours ago
$374
Roundtrip
found 11 hours ago
Select United flight, departing Wed, Sep 10 from Seattle to Lafayette, returning Thu, Sep 25, priced at $374 found 11 hours ago
United
Sat, Nov 1 - Tue, Nov 4
SEA
Seattle
LAF
Lafayette
$380 Roundtrip, found 4 days ago
$380
Roundtrip
found 4 days ago
Select United flight, departing Sat, Nov 1 from Seattle to Lafayette, returning Tue, Nov 4, priced at $380 found 4 days ago
United
Fri, Oct 31 - Sun, Nov 2
SEA
Seattle
LAF
Lafayette
$383 Roundtrip, found 22 hours ago
$383
Roundtrip
found 22 hours ago
Select United flight, departing Fri, Oct 31 from Seattle to Lafayette, returning Sun, Nov 2, priced at $383 found 22 hours ago
United
Tue, Sep 16 - Sat, Sep 27
SEA
Seattle
LAF
Lafayette
$384 Roundtrip, found 11 hours ago
$384
Roundtrip
found 11 hours ago
Select United flight, departing Tue, Sep 16 from Seattle to Lafayette, returning Sat, Sep 27, priced at $384 found 11 hours ago
United
Sun, Aug 31 - Fri, Sep 19
SEA
Seattle
LAF
Lafayette
$406 Roundtrip, found 11 hours ago
$406
Roundtrip
found 11 hours ago
Select United flight, departing Sun, Aug 31 from Seattle to Lafayette, returning Fri, Sep 19, priced at $406 found 11 hours ago
United
Sun, Aug 17 - Tue, Aug 26
SEA
Seattle
LAF
Lafayette
$409 Roundtrip, found 6 hours ago
$409
Roundtrip
found 6 hours ago
Select United flight, departing Sun, Aug 17 from Seattle to Lafayette, returning Tue, Aug 26, priced at $409 found 6 hours ago
United
Wed, Aug 27 - Thu, Sep 11
SEA
Seattle
LAF
Lafayette
$411 Roundtrip, found 11 hours ago
$411
Roundtrip
found 11 hours ago
Select United flight, departing Wed, Aug 27 from Seattle to Lafayette, returning Thu, Sep 11, priced at $411 found 11 hours ago
United
Sat, Nov 1 - Mon, Nov 3
SEA
Seattle
LAF
Lafayette
$417 Roundtrip, found 4 days ago
$417
Roundtrip
found 4 days ago
Select United flight, departing Sat, Nov 1 from Seattle to Lafayette, returning Mon, Nov 3, priced at $417 found 4 days ago
United
Wed, Aug 27 - Sat, Sep 6
SEA
Seattle
LAF
Lafayette
$421 Roundtrip, found 11 hours ago
$421
Roundtrip
found 11 hours ago
Select United flight, departing Wed, Aug 27 from Seattle to Lafayette, returning Sat, Sep 6, priced at $421 found 11 hours ago
United
Tue, Sep 30 - Fri, Oct 17
SEA
Seattle
LAF
Lafayette
$425 Roundtrip, found 11 hours ago
$425
Roundtrip
found 11 hours ago
Select United flight, departing Tue, Sep 30 from Seattle to Lafayette, returning Fri, Oct 17, priced at $425 found 11 hours ago

Alternative airports near Lafayette

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

Select flight to Purdue University LAF. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $535
LAF
Purdue University
CheapestClosest
Average driving time to city center8 min
Flights from $535
Flights from Seattle (SEA) to Lafayette (LAF)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Purdue University
Airlines serving
United
Roundtrip price
$374
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 September. 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 $237 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?
Discover the latest flight deals from SEA to LAF by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from SEA to LAF?
The cheapest flights from SEA to LAF are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from SEA to LAF?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from SEA to LAF. Sort your results by "Price (lowest to highest)" to snap up a great deal.
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.