Spirit's sale fares are the lowest around. Destinations include Florida beaches, New York City, and Cancun, among others.
This offer from British Airways also includes discounts on hotels, car rentals, and sightseeing tours. Travel is valid from early September through late October.
Visit London from $800 round-trip this summer. Departure cities include Washington, D.C.; Chicago; San Francisco; and more.
Europe, Latin America, and Mexico destinations are on sale from Delta. Fares start at $438 round-trip.
Air Canada has discounted airfares to popular cities such as Montreal, Toronto, and Vancouver, among others.
