Setting up airfare alerts can definitely help save you money when booking flights, and luckily there are dozens of sites that offer such a service — but finding one that fits your preferences can be challenging. Here are ten sites that offer alerts to help you determine the right time to buy your tickets, alert you to new deals you might want to consider, allow tracking of a specific flight, and some that will even forecast price trends.

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.


Once you have the date, flight number and fare class of an award seat, call a phone agent and feed them the exact information to save you time and stress. In fact, phone agents will often thank you for making their lives easier, especially for those who are new or have never searched for the specific partner your trying to book. You may even encounter an agent who doesn’t realize they even partner with the airline you’re trying to book.
Finding airline award space, especially in premium classes, can be an art form (and a challenging one at that). There are so many partnerships both within and across airline alliances, and some websites and phone agents are better at finding available seats than others. That being said, knowledge is power in the world of points and miles, and that’s exactly what ExpertFlyer provides. By allowing you to search award space and set alerts for your perfect itinerary, the platform equips you with the trip planning expertise you need with minimal effort on your part. Hopefully this guide has shown you exactly how to unleash the tool’s power as you plot your next redemption.
Yapta.com: The newest entrant in this burgeoning field. There are two things you can do here: first, if you've already bought a fare, you can enter the flight locator number and then you'll get an alert if the fare has gone down. (Some airlines will refund the entire fare difference in the form of a voucher good for future travel within a year; others deduct $25 to over $300, depending on the fare and route.) But there's also a "Tagger" feature where you can track fares on individual flights, not just routes between two cities.
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.
Matt is the Managing Editor of Point Hacks. Originally from Sydney, he won the green card lottery and now bases himself in the US for half the year and abroad for the other half. His favourite destinations so far have been Japan, Iran, the US, Israel and South Africa, and his top flight experiences in Cathay Pacific First, SWISS Business and Singapore Airlines Economy Class.
Number 2 is that you don’t even need to know where you want to go. Based solely on your fixed dates or a broad time period, the Explore option shows you where is cheapest to fly, which is a perfect tool for the early stages of your trips. I use it this feature a lot when planning a trip itinerary or choosing which hub city should I adopt in a multi-city trip.
Only once you have confirmed your choice of preferred flights and completed the PFo Sign-up, Vietnam Airlines and Optiontown may choose to move you to those preferred flights. The availability of PFo is dynamic and may vary for different flights or time. For passengers who have connecting flights, kindly choose alternative flights that are suitable with your schedule. Vietnam Airlines will not take responsibility for those who miss connecting flights due to your selection of alternative flights. 
Watch for business-class sales. Most leisure travelers ignore advertised business-class fare sales entirely. I have occasionally seen transatlantic business-class sale fares for around $1,100 at a time when it costs that much to fly coach. This will take some persistence and sleuthing, but you can sometimes fly in the front of the plane for less than the folks crammed into the back of the plane. 

I name the alert, select the applicable class, set the quantity and then click Verify and Create. As soon as I do that, the site will start searching automatically and will email me when it finds at least that many seats. Now ExpertFlyer won’t actually book the flight for you; it’s still up to you to go online or call the carrier through which you want to book to actually ticket the reservation.
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.

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A price 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). Price alerts are completely free, can be stopped at any moment and you can have multiple set up at once. They are hands-down one of the best ways to find cheap flights, fast.
Currently, only one member may sponsor an upgrade per reservation. For instance, if a Super Elite 100K and Prestige 25K member are travelling together on the same booking, it is not possible for the Super Elite 100K member to sponsor an upgrade for the departing flight(s), and for the Prestige 25K member to sponsor an upgrade for the return flight(s).
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Upgrade Bid upgrades can only be applied once to the next higher class. Upgrades to Business Class are only available for Premium Economy Class passengers. However, for aircraft or routes without Premium Economy Class, you would be invited to upgrade from Economy Class to Business Class. No further upgrade by cash or miles will be honoured after an Upgrade Bid upgrade has been offered.
If your itinerary is botched or implodes for some reason, particularly if it affects only you and no one else (such that the airline is not trying to accommodate lots of folks in the same situation), your case for an upgrade on a subsequent flight becomes more compelling. The airline is not obligated to upgrade you, but if this happens, pleasantly but firmly let the gate agents know that if an upgraded seat is available on your rebooked flight, you would greatly appreciate getting that seat.
Today, with profits essentially non-existent, airlines are oftentimes not releasing Premium seating for flight upgrades until an hour (or even minutes) before the flight's departure, hoping to sell those seats at full cash value. Only at this point do the airlines release the empty (non-purchased) Premium seats to their frequent flyers who use miles to get the award or the flight upgrade. So it becomes a race among frequent travelers to position themselves to obtain one of the coveted few Premium seats. And everyone you speak with seems to have their own method and strategy for getting into position to take advantage of these hard to come by flight upgrades.
Farecompare gets its data from a company called ATPCO, which processes fares from the airline computer systems and delivers them to travel agencies and what are known in the industry as Global Distribution Systems (GDS's) such as Sabre, Galileo, and Apollo. Domestic fares are updated by ATPCO (and thus by Farecompare) three times a day during the week and once a day on weekends.

Today, with profits essentially non-existent, airlines are oftentimes not releasing Premium seating for flight upgrades until an hour (or even minutes) before the flight's departure, hoping to sell those seats at full cash value. Only at this point do the airlines release the empty (non-purchased) Premium seats to their frequent flyers who use miles to get the award or the flight upgrade. So it becomes a race among frequent travelers to position themselves to obtain one of the coveted few Premium seats. And everyone you speak with seems to have their own method and strategy for getting into position to take advantage of these hard to come by flight upgrades.
Once you have the date, flight number and fare class of an award seat, call a phone agent and feed them the exact information to save you time and stress. In fact, phone agents will often thank you for making their lives easier, especially for those who are new or have never searched for the specific partner your trying to book. You may even encounter an agent who doesn’t realize they even partner with the airline you’re trying to book. 

Yapta.com: The newest entrant in this burgeoning field. There are two things you can do here: first, if you've already bought a fare, you can enter the flight locator number and then you'll get an alert if the fare has gone down. (Some airlines will refund the entire fare difference in the form of a voucher good for future travel within a year; others deduct $25 to over $300, depending on the fare and route.) But there's also a "Tagger" feature where you can track fares on individual flights, not just routes between two cities.
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