You can now fly from California to Europe for less than the cost of a night in a mediocre hotel.

On Tuesday, low-cost Icelandic airline WOW launched an airfare sale with one-way fares as low as $69 from Los Angeles and San Francisco to Edinburgh, Stockholm, Bristol and Copenhagen — when you fly from Jan. 15 to April 5. It also launched $99 fares to Reykjavik from Miami, Boston, Los Angeles and Washington D.C.

And these aren’t the only $69 fares that consumers will see: Low-cost airline Norwegian Air told multiple sources that it would launch $69 trans-Atlantic flights when it gets its new fleet of planes, likely this year.

“These are headline-grabbing fares,” says George Hobica, the founder of airline fare site AirfareWatchdog.com.

Of course, there’s a catch: Most of you will want a round-trip ticket, and flights back to where you came from will likely be more expensive, says Hobica. Indeed, many return flights to the U.S. on WOW will cost you $149.99 to $199. You could, of course, fly another airline back, but those fares too aren’t likely to be in the sub-$100 range.

Plus, you have to remember to factor in fees like checked bags, adds Hobica. WOW sometimes charges for large carry-on bags, pre-booked seats, name changes on tickets, checked bags, and more. Norwegian has a similar set of fees.

Even if you don’t snag one of these great deals on airfare, consumers are likely to find great airfare deals like this throughout the year, says Hobica. Increased competition and more fuel-efficient planes are yielding more deals for consumers.

This story was originally published on MarketWatch.