Save 20% on Porter Airlines, for travel through December 17. Just enter promo code FALL20 at time of booking. All purchases must be made by August 31. Fares are reversible and include:

Toronto to Chicago $206 round-trip

Toronto to Newark $182 round-trip

Toronto to Halifax $158 round-trip

Toronto to Montreal $198 round-trip

Toronto to Ottawa $190 round-trip

Toronto to Thunder Bay $142 round-trip

Ottawa to Boston $286 round-trip

Ottawa to Chicago $248 round-trip

Ottawa to Thunder Bay $222 round-trip

Quebec City to Boston $334 round-trip

Alaska Airlines is beefing up service for fall with the addition of three new routes. Starting November 16, Alaska will begin daily nonstop service between Chicago and Portland. This comes at a special introductory fare of $99 one-way, available through January 31, with blackout dates November 20, 21, 25, 28-30, December 18-21, 23, 26-28, and January 2-4. Alaska Airlines Mileage Plan members will also receive double miles along this route.

And starting August 23, Horizon Air will fly nonstop from Redding with daily direct service from Arcata/Eureka to Seattle, also with an introductory fare of $99 one-way for travel through December 16.

Seattle to Reading, CA $212

Seattle to Arcata-Eureka $212

Chicago to Portland, OR $198

Virgin America has a new sale for fall/winter, for travel from August 28 through November 18, and again from December 2 to December 16, and January 6 through February 10. Fares require a 3-day advance purchase, and all bookings must be made by September 8.

San Francisco to Las Vegas $98

Washington DC to Los Angeles $218

Boston to Los Angeles $218

Seattle to Los Angeles $138

In other Virgin America news, they've upped baggage fees from $15 to $20 per checked bag. Passengers may check up to 10 bags at $20 each. The first checked bag may weigh up to 70lbs while bags 1-10 may weigh up to 50lbs each.

Fly from Seattle to Southeast Asia this fall, as part of EVA Airway's current sale. Fares are valid on weekdays, for outbound travel through November 30, with a two-month maximum stay.

All fares must be purchased by August 30 and include:

Seattle to Jakarta, Indonesia $871, incl. all taxes

Seattle to Bali, Indonesia $871, incl. all taxes

Seattle to Hangzhou, China $810, incl. all taxes

Seattle to Kuala Lumpur, Malaysia $917, incl. all taxes

Seattle to Macau, China $720, incl. all taxes

Seattle to Manila, Philippines $656, incl. all taxes

Seattle to Phnom Penh, Cambodia $766, incl. all taxes

Seattle to Singapore, Singapore $891, incl. all taxes

Seattle to Surabaya, Indonesia $871, incl. all taxes
 

United's Mexico City sale is good for travel through October 31. All fares must be purchased by August 31, and require a 2-night minimum stay, with a maximum stay of 30 days.

Boise to Mexico City $398 round-trip, incl. all taxes

Medford to Mexico City $428 round-trip, incl. all taxes

Reno to Mexico City $358 round-trip, incl. all taxes

Sacramento to Mexico City $467 round-trip, incl. all taxes

Spokane to Mexico City $462 round-trip, incl. all taxes

Heading to Hawaii next month? Sign up for HawaiianMiles from Hawaiian Air for $24.99 interisland flights. Book by September 30, for travel between September 1 and September 30. These $24.99 promo fares are applicable to one way routing, in coach class, and include U.S. tax. Discounted fares apply for up to 7 passengers per booking and are good for travel between Honolulu and Lihue, Hilo, Kona, Kahului.

Haven't had your fill of the beach this summer? You have until tomorrow to snag one of JetBlue's Bikini Sale fares to the Caribbean, good for travel from September 8 to November 18.

Valid outbound travel days are Monday through Thursday, and Sunday. Return travel is valid Monday through Wednesday.

Avoid blackout dates October 8 and October 13.

Boston to Bermuda $292 round-trip, incl. all taxes

New York to Aguadilla $204 round-trip, incl. all taxes

New York to Ponce $199 round-trip, incl. all taxes

New York to San Juan $244 round-trip, incl. all taxes

New York to Santo Domingo $311 round-trip, incl. taxes

New York to Santiago $311 round-trip, incl. taxes

New York to St Maarten $393 round-trip, incl. taxes

Orlando to Aguadilla $164 round-trip, incl. taxes

Orlando to Nassau $191 round-trip, incl. all taxes

Orlando to Ponce $159 round-trip, incl. all taxes

Orlando to Santo Domingo $271 round-trip, incl. all taxes

San Juan to Santo Domingo $199 round-trip, incl. all taxes

It's Monday, which means JetBlue has dropped their weekly batch of Twitter deals. These are good for one-way travel on Saturday, August 29. String together a return flight at full fare and you've still got yourself a good deal. Of course, there were a few routes where we found the return fare to be...meh...beyond high (ahem, Newark to Tampa/Orlando, we're looking at you), so we won't bother with posting those. Our picks are:

Raleigh Durham to Ft Lauderdale $19 one-way

Ft Lauderdale to Austin $39 one-way

New York to Nassau $39 one-way

New York to Houston $39 one-way

New York to Oakland $49 one-way

Remember, these fares are very limited so hurry!

More information about American's checked baggage policies for domestic and international itineraries is available at www.aa.com/bag.

OpenSkies, the last of the All Biz Class carriers, is offering $1,115 round-trip fares (taxes included) for fall/winter travel from New York to Paris. For a seat in business class, we doubt you'll do better.

Interested? Book by September 8, for travel from November 1 through March 31.

New York to Paris $1,115 round-trip, incl. all taxes, nonstop, Business Class