Still nailing down your summer travel plans? Amtrak and Southwest are currently running Summer and Fall deals that will significantly cut down vacation costs.

Southwest is running a sale with one-way flights starting as low as $49 for domestic travel and $81 for international destinations. Hop on a short flight from Atlanta to Nashville or San Diego to Sacramento for only $49, or take a cross-country jaunt from Los Angeles to Washington D.C. for $162.

If you’re in the mood for an international adventure, you can nab some seriously discounted one-way flights departing Fort Lauderdale to various locales throughout the Caribbean, including the Grand Caymans for $81, Nassau for $87, and Belize City for $113. If flying out of Florida isn’t convenient for you, you can find similar deals for flights departing from Texas airports. 

The sale extends through July 18 and is available for domestic travel between Sep 2. and Dec. 19 and international travel between Sep. 3 and Dec. 11, apart from a few blackout dates. 

Meanwhile, Amtrak has launched their Amtrak Across America Sale which includes 40 percent off of trips booked by July 12. Not only will this sale give you an opportunity to take in America’s stunning landscapes, but some one-way fares are less than the cost of dinner, making this sale the perfect low-risk, spontaneous adventure.

Passengers will have the option to go cross-country from Portland to Boston for only $17 on the Downeaster or can do an easy weekend trip from Portland to Seattle on the Coast Starlight for just $21. 

The Amtrak sale has no blackout dates, meaning you can plan an early Labor Day getaway or even think ahead to holiday excursions.