For fall travel, fly nonstop from Denver to Reykjavik for $608 round-trip, including all taxes, on Icelandair.
Searching Icelandair.com, we were able to find seats departing DEN on Wednesday, October 29, and returning from KEF on Thursday, November 6.
Plenty of other dates are available for travel beginning in mid October through early December.
For booking info, see our Fare Details.
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