While the weather today may be crisp and cheerful, you know it won't be long until it going outside feels like walking into a giant, open mouth. In the spirit of extending spring just a little bit longer, this week's flight deals will take you to cooler climes in the U.S. and beyond.

Fly.com

• Round-trip to Denver starting at $89
• Round-trip to Chicago starting at $117

Southwest Airlines

• One-way to Nashville starting at $160*
• One-way to Seattle starting at $184*

*Must book by May 5

United Airlines

• Round-trip to Salt Lake City starting at $328 (add a hotel for an additional $45 per night and a rental car for an additional $23 per day)
• Round-trip to Grand Rapids, MI starting at $328 (add a hotel for an additional $46 per night and a rental car for an additional $59 per day)
• Round-trip to Auckland, New Zealand* starting at $1,131

*Service begins July 1; tickets must be booked by May 11

Escape Houston

• Round-trip to Dublin, Ireland starting at $580
• Round-trip to Oslo, Norway starting at $637
• Round-trip to Copenhagen, Denmark starting at $650