Seattle to Cancun for $243RT!
Nice sale for late fall between Seattle and sunny Cancun, Mexico! This United deal has a one stop layover in San Francisco or Houston. United’s Basic Economy only includes a backpack now. Normal sized carry-on and checked luggage will incur fees. If you have the United Explorer Card, you can still get one checked bag free for each person on your itinerary. Use ITA Matrix Software to locate the best dates. Book direct through United for the frugal fares!