Starting in June, Wow air will begin new service from both Los Angeles (LAX) and San Francisco (SFO) to Reykjavik (KEF), allowing for onward connections to Amsterdam, Berlin, Bristol, Copenhagen, Dublin, Dusseldorf, Frankfurt, London, Paris, and Stockholm. Special intro fares are available, starting at $99 one-way.
Return fares are, of course, priced a tad higher on the return trip.
Be warned that those $99 intro seats are scarce for peak summer travel. You'll have more luck finding available intro prices for travel in early September and onward.
Fares include one free carry-on weighing no more than 5kg, so pack light or pay up!
For those who prefer to check luggage, tack on an additional $67 per flight segment for bags weighing 20kg or under.