From KLM, their Winter Fare Sale features fares from US cities to select destinations in Europe. Travel is valid on weekdays, Mondays through Thursdays, through March 20. Fares require a minimum 7-day stay, with an allowed maximum stay of 1 month. For weekend travel, tack on an additional $20-$30.
Tickets must be purchased by March 12.
Other airlines may be matching along some routes. Fares include:
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