Book your flight early.
Discount fares often require advanced reservations of seven to twenty-one days in advance, depending on the fare. Booking thirty days in advance will help secure better international fares. To increase your chances of finding a great fare, book your flight as soon as you know your travel dates. Airlines sell only a limited number of seats at the lowest fares, and when those seats sell out, the price goes up!
Fly on a weekday.
Flights departing on weekdays usually offer the lowest fares, but be careful, fares are often higher on Monday and Friday than on other weekdays. Saturday flights often have discount fares, but as a rule it's less expensive to fly on Tuesday, Wednesday and Thursday.
Stay through Saturday.
Most low fares require that you stay over at least one Saturday night before your return flight, though some fares may only require you to stay a minimum of 3 or 4 days.
Consider nearby airports.
You may enjoy significant savings if you are willing to fly into nearby airports. For example, when I fly to San Francisco (SFO) I often fly into San Jose (SJC) and save a chunk of change.
Try surrounding dates.
To get the lowest roundtrip fare, the same fare must be available on both the departure and return flights you select. If the fare is sold out on either of these, the price you end up with will be much higher. If possible, consider flying on another date.
Check out package deals.
If booking late, check out last minute deals, like my "Deals and Steals" (sign up for my newsletter and I will send you monthly savings).
Book your trip late at night / early in the morning.
Online booking engines often temporarily lock seats out when someone is in the process of booking a trip. Between 11:00 PM and 5:00 AM fewer people are booking flights so less of the good fares are temporarily tied up.
Book your trip with me!
My booking engine lets you take advantage of all of these tips.