$228 Cheap Flights from Baltimore (BWI) to Lafayette (LAF)

View $228 flight on Tue, May 13, 2025Opens in a new window

Popular airlines from Baltimore Washington Intl. Airport (BWI) to Lafayette, IN (LAF-Purdue University)

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Find available prices by choosing your travel dates.

Cheap Flights from Baltimore to Lafayette (BWI-LAF)

Prices were available within the past 7 days and start at $228 for one-way flights and $339 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Sep 10 - Sun, Sep 14
BWI
Baltimore
LAF
Lafayette
$339 Roundtrip, found 1 day ago
$339
Roundtrip
found 1 day ago
Select United flight, departing Wed, Sep 10 from Baltimore to Lafayette, returning Sun, Sep 14, priced at $339 found 1 day ago
United
Tue, Sep 9 - Tue, Sep 16
BWI
Baltimore
LAF
Lafayette
$376 Roundtrip, found 1 day ago
$376
Roundtrip
found 1 day ago
Select United flight, departing Tue, Sep 9 from Baltimore to Lafayette, returning Tue, Sep 16, priced at $376 found 1 day ago
United
Wed, Sep 10 - Sun, Sep 14
BWI
Baltimore
LAF
Lafayette
$409 Roundtrip, found 1 day ago
$409
Roundtrip
found 1 day ago
Select United flight, departing Wed, Sep 10 from Baltimore to Lafayette, returning Sun, Sep 14, priced at $409 found 1 day ago
American Airlines
Sat, May 10 - Sat, May 17
BWI
Baltimore
LAF
Lafayette
$427 Roundtrip, found 5 days ago
$427
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, May 10 from Baltimore to Lafayette, returning Sat, May 17, priced at $427 found 5 days ago
United
Thu, Sep 11 - Sun, Sep 14
BWI
Baltimore
LAF
Lafayette
$434 Roundtrip, found 5 days ago
$434
Roundtrip
found 5 days ago
Select United flight, departing Thu, Sep 11 from Baltimore to Lafayette, returning Sun, Sep 14, priced at $434 found 5 days ago
American Airlines
Sun, May 11 - Tue, May 13
BWI
Baltimore
LAF
Lafayette
$437 Roundtrip, found 5 days ago
$437
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sun, May 11 from Baltimore to Lafayette, returning Tue, May 13, priced at $437 found 5 days ago
United
Wed, Sep 10 - Sun, Sep 14
BWI
Baltimore
LAF
Lafayette
$441 Roundtrip, found 1 day ago
$441
Roundtrip
found 1 day ago
Select United flight, departing Wed, Sep 10 from Baltimore to Lafayette, returning Sun, Sep 14, priced at $441 found 1 day ago
American Airlines
Tue, May 13 - Wed, May 28
BWI
Baltimore
LAF
Lafayette
$445 Roundtrip, found 1 day ago
$445
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, May 13 from Baltimore to Lafayette, returning Wed, May 28, priced at $445 found 1 day ago
American Airlines
Tue, May 13 - Sat, May 17
BWI
Baltimore
LAF
Lafayette
$446 Roundtrip, found 5 days ago
$446
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, May 13 from Baltimore to Lafayette, returning Sat, May 17, priced at $446 found 5 days ago
American Airlines
Sun, May 11 - Fri, May 16
BWI
Baltimore
LAF
Lafayette
$451 Roundtrip, found 5 days ago
$451
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sun, May 11 from Baltimore to Lafayette, returning Fri, May 16, priced at $451 found 5 days ago
Flights from Baltimore (BWI) to Lafayette (LAF)
Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Purdue University
Airlines serving
United
Roundtrip price
$339
Distance
551 mi

Baltimore to Lafayette Flights

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

The best time to book a flight from Baltimore to Lafayette

Sunday is one of the best days to book for cheap flights from Baltimore 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 Baltimore 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 Baltimore to Lafayette in 2025. You can also book with separate airlines for your outbound and return journeys, from $228 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 Baltimore 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 Baltimore 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 Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Lafayette, IN (LAF-Purdue University) cost?
Discover the latest flight deals from BWI 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 BWI to LAF?
The cheapest flights from BWI 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 BWI to LAF?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from BWI to LAF. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Lafayette, IN (LAF-Purdue University)?
There aren’t any daily direct flights available from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Lafayette, IN (LAF-Purdue University). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you’ll be soaring above the clouds before you know it.
What day of the week has the most flights from BWI to LAF?
Typically you’ll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Lafayette, IN (LAF-Purdue University)?
To touch down at Lafayette, IN (LAF-Purdue University) on time, select a flight that takes off from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) before 3 PM. The likelihood 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.
What airports do you fly into for West Lafayette from Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
Indianapolis Intl. Airport (IND) is the only airport in West Lafayette with direct flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI). Compare your options and find affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Lafayette, IN (LAF-Purdue University) last-minute?
Booking your ticket from BWI to LAF right before your trip is usually more expensive. However, if you’re flexible with your itinerary, you could bag a cheap last-minute fare.
Is it cheaper to book a BWI to LAF flight and hotel package?
You’ll generally save money by booking a BWI to LAF flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it’s simple to manage everything in one convenient place. After choosing your preferred accommodations and flights, consider adding extras including activities, tours and car rentals.
Can I cancel or change the date of my flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Lafayette, IN (LAF-Purdue University)?
In most cases, you’re able to reschedule or cancel your BWI to LAF flight. However, there may be additional fees, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline’s fees and policies on flight changes, or if you want further information, go to our Customer Service portal.

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*Available to One Key members.