If your country’s currency is currently strong compared to others around the world, search airfare in a country where the currency is weaker. For example, the US dollar is strong and the New Zealand currency is weak. I found a one-way flight from Australia to NYC for $1,000 USD but when I searched on the NZ version of the airline, I found the same ticket for $600 USD. It’s the same airline, same flight, and same booking class. It was just booked in a different currency. This tip does not always work, but it works often enough that it’s something worth trying if your currency is currently doing well.
Fly out at the right time. As with most of these search related parameters, turns out what we want the least is what makes the cheapest flight. The earlier your leave on a flight, the cheaper it will be. Red eye flights (in the middle of the night) are by far the cheapest, followed directly by early morning flights. Although you might luck out on a rare evening steal, typically the later in the day you depart, the more expensive your ticket will be.
Look into alternative routes. Slightly different than flying indirectly with layovers, if you aren’t in a time crunch consider taking alternative routes to your destination. If you can get a cheaper flight flying from Seattle to Boston, and then from Boston to London, then book two separate flights. Breaking up your travel will lengthen the amount of time you have to spend journeying to your destination, but it could be one of the best ways to manage saving money.[6]

lower rates on everything. Weekdays are also cheaper than
can get something pretty similar for half the price or

Use skyscanner.net. This neat website searches all airlines, big and small, and allows you to look for the cheapest rates out of your local, rather than getting bogged down with specifics. Meaning, if you know you want to go on vacation but aren’t too picky about where, this website will provide the cheapest flights to everywhere in the world from the nearest airports to you.

weekends for arrival and departure from the airport.
 The sheer size of the United States means that temperatures are going to vary widely throughout the four seasons, and you’ll want to keep your destination and the time of year in mind as you pack for your trip. If you’re visiting the Midwest or Northeast during the winter, make sure you bring along warm outwear, including gloves, scarves and hats, because temperatures can easily drop below zero. Temperatures in the south are more moderate at this time of year, and you should be able to get away with packing a lighter jacket to layer with a sweater. Those traveling to Denver or other Rocky Mountain states should consider a mix of clothing as 70 degree temperatures on one day can easily turn into a blizzard overnight.
Why it's awesome: Since its inception in 1998, New York-based JetBlue has helped raise the standard of service and amenities for low-cost carriers in the US. The airline's signature mood lighting, friendly service, complimentary satellite TV along with free food and snacks make it an industry leader economy flying. In fact, at 34 inches of pitch, JetBlue's Airbus A320 fleet has the roomiest economy seats in the US.
Fly on multiple airlines. Looking for flights on single airlines may be the easiest, but you may have better results if you look into flying on multiple airlines. Try taking one airline to your destination, and a separate one from. Or, include a layover with another airline mid-flight. Breaking up your trip and splitting it between carriers is likely to save you money, which is worth the extra time and hassle it will cost you.[4]

Not only does it help to be flexible with dates and destinations but being flexible with the route you take is another way to get a cheap flight. Sometimes it’s cheaper to fly to London and take a budget airline to Amsterdam than to fly direct to Amsterdam. There are so many budget carriers around the world that taking advantage of a good deal to another city and then hopping on a budget flight to your destination is sometimes the best way to go. I had to go to Paris once; the flight was $900 USD, but I could fly to Dublin for $600 and get a $60 flight to Paris. It meant more flying time, but the $240 I saved was worth it.

If you're flying somewhere that involves a transfer, say from Canada to Australia which typically involves Canada to LA, then LA to Australia, consider that it may be cheaper to book these two legs separately on your own by adding another destination to your trip. It should go without saying that in doing this, you should not book tight layovers. I repeat: do not book layovers that are hours apart! This approach is for those who want to create an additional destination of a few days or more, before catching their next flight. The one exception is when booking with Kiwi.com, who offer their own guarantee on making connecting flights even when not with the same partner airlines.
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