There are good prices leaving other cities as well. The long haul from Los Angeles to Reykjavik can be made for just $300 and flights out of San Francisco are going for $310. There are also trips leaving New York and Boston for $339. As always, the prices can change rapidly, so if you want tickets at this price you have to jump on it.
If you're putting up with frigid temperatures anyhow, you can do worse than spending time in natural hot springs and riding horses across frozen lava fields. Get on it.
h/t The Flight Deal
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