Most cash bookings can be upgraded with Avios either at the time of booking or later on, depending on availability. Only the lowest economy (World Traveller) fares (Q, O and G) cannot be upgraded with Avios at any time. There must be reward flight availability in the next cabin for you to be able to upgrade to it using Avios. You won’t be able to upgrade with Avios at the airport or on board.
Kiwi’s interactive map feature is especially useful. Set your home city and look at the map to see how much different cities would cost to fly to. Once you select your destination, you can sort your results into either recommended, cheapest or shortest flight. Kiwi finds the cheapest pricing by pulling in different carriers, but you may have to book separate tickets — which shouldn’t be a problem for bargain hunters or those on a budget. For example, if you want to fly from New York (JFK) to Dublin (DUB), you could always fly nonstop on United, which you’ll find as a result in the ‘shortest’ category. But if you click on the “cheapest” category, you can book one leg from JFK to London (LGW) on Norwegian, and then a Ryanair ticket from London (LGW) to Dublin (DUB), saving you several hundred dollars. Booking directly on the app makes it easier than heading to each airline’s page and booking separate tickets. This app is free to download.
Airfarewatchdog – You can set up regular price alerts for favorite routes, but the real appeal for cheapskates with wanderlust is this site’s Top 50 Fares of the Day page. This tracks bargain airfares from Frontier, JetBlue, and other carriers prone to slash prices, as well as larger airlines. (Sample deal from earlier Wednesday: $40 for a roundtrip flight from Pittsburgh to Las Vegas).
Yapta.com allows you to set up an alert for a specific flight. They call it a “refund” alert, since they set it up for watching a flight you’ve already booked but want to know if the price drops in case it’s with an airline (such as Alaska in my case) that gives refunds without fees if your price drops after booking. However, they don’t actually check whether you’re on the flight, so you could use it to simply watch a flight that you’re interested in but HAVEN’T YET booked. This wouldn’t be practical if there’s a wide variety of flights flying the route you want on the day you want in the time span you want, but in those cases where there are only a few flights that fit your needs, it might be practical to use this feature at Yapta.com to set up a fare alert for those specific flights.
Finding flight availability for getting from point A to point B is easy to do with the right tools. ExpertFlyer makes it easy for you to search for flight availability on a number of airlines, view fares for flights, check seat availability, connecting flights and so much more. Your membership makes your flight availability search simple and beneficial especially for the frequent flyer.
So, for example, if you really like to take United's morning nonstop between New York and LA, you can track just that flight to see if the price drops to a level you specify, and you'll also get an alert if the price drops between the time you buy and when you fly. Yapta requires that you download an applet, and only works with Internet Explorer 6 or 7, which means it doesn't work on Macs, although a Mac/Firefox version is in the works. And it does not (yet) track fares on all airlines — just 11 so far, and as usual Southwest isn't one of them.
If I had to award a ‘peoples choice’ in this category, it would go to Hipmunk. It does almost as good a job of finding and tracking information on flights as Google Flights, but delivers it inside a better design, displayed according to the ‘agony factor’ of the flight (a combination of time in the air, departure and arrival times, cost and layover), in a beautiful interface.
Brandon was thrust into the world of points and premium travel as a university student, and has made the most of it since. Now graduated, working from Launceston and somehow a Velocity Platinum frequent flyer, he eagerly awaits for more opportunities to explore the world from the pointy end of the plane.You can find him on Instagram as @bloo.per, as well as running a food/travel account @flightandbites with his partner.
A flight alert tracks the price of a specific route or flight. When the price changes, you’ll be notified via email or push notification if the price went up or down (and by how much). Flight alerts are completely free and can be stopped at any moment. It is also possible to have multiple price alerts set up at once which is a great option if you are comparing vacation destinations. It really is a must-have tool, especially for budget travelers, because flight alerts are hands-down one of the best ways to find cheap flights, fast. 

I receive compensation for content and many links on this blog. You don’t have to use these links, but I am grateful to you if you do. American Express, Citibank, Chase, Capital One and other banks are advertising partners of this site. Any opinions expressed in this post are my own, and have not been reviewed, approved, or endorsed by my advertising partners. I do not write about all credit cards that are available -- instead focusing on miles, points, and cash back (and currencies that can be converted into the same).

Travel providers like to speculate as to the best time to purchase an airline ticket. Many even claim that certain days of the week are better than others. The IOS and Android app called Hopper has the data to support such a claim, however, and even Apple even named it one of the best apps of 2015.  Hopper’s application uses their accumulated data to predict and analyze airfare. The app will notify you when prices for your flights have hit a low point, according to their algorithms. They’ll also warn you if waiting to purchase may bring a better fare.  Just download the app, do a search for an airfare, and set up the alert. Hopper will track it real time and notify you about changes and purchase recommendations.

The FareIQ feature is unique amongst all tracking websites in that it will also track your flight after purchase and send a notification if the price drops, as you could be entitled to a refund from airlines that will refund the difference when the price drops. It pays to know the refund policy of each carrier in this case, as that could be the difference between getting a refund or not.
Buy an extra seat. One interesting tactic to find yourself some breathing room offered by Petersen might appeal to folks traveling on very cheap sale fares: buy two coach tickets. Say you find one of these $100 roundtrip fares to Florida or the like; the airlines that offer these usually make up the difference in fees for checked bags, movies, food and other extras. However, if you don’t need headphones or to check a second bag, you can skip all those charges, and get yourself a heap of legroom for $50 — less than the cost of most premium seats.
Setting the benchmark for ease of use and functionality, Google Flights has become a go to flight search tool for any travel that doesn’t require the advanced routing and functionality of ITA Matrix. Tracking across multiple dates, destinations, and cabins, Google Flights will let you track individual airlines or alliances, choose the number of stops, and will wrap up any changes into an easily digestible email showing which prices have dropped/risen. If you have Google Now, you can have the price changes sent directly to the app, or you can see all tracked flight in the drop-down on the left of the Google Flights homepage.
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