When you think of a commercial Airline, think of American Airlines, Canadian Airlines, Continental, AirCanada, and such. These type of airlines are different than charters, because your flight plan might go from CityA to CityB, and then arrive at CityC; possibly changing airplanes in CityB at some point. For example, I took commercial Airlines back to Mexico, and I lifted off from Calgary, landed in Houston Texas and switch planes, then left Houston and arrived in Cancun.
Technical Definition: (Thanks to Don) Charter flights is a term used to describe companies that do not own their own planes and have to rely on leasing them from other airlines. For instance Fun Jet leases from ATA Air Trans American, Apple Vacations lease some from Air Meridian, etc, etc. The normal charter flights such as Sun Travel, Apple Vacations and Fun Jet run year around and are usually more dependable than the smaller charter companies that only run during spring break or just after graduation
My definition: What this is, is an airline that takes a direct non-stop flight to its destination. For example, if the flight takes off from CityA, it will go directly to CityB without stopping. Some Canadian charters that fly to Cancun are Canada3000, Royal Airlines, and I am sure other ones too.
Once you have decided which kind of flight you want, it is time to go shopping. If you give yourself plenty of time, you can almost guarantee you'll get the flight on the date you choose, but you might not get a bargain.
If you want to get a bargain, ask about seat sales. Seat sales, as I explained earlier, are when for a particular date, that flight is not completely full, so rather than loose money and have a partially empty plane, the airline lowers the ticket price to get those seats sold. Sometimes you can fly for half or 75% of the normal price. But you probably won't get the departure date you would like, and the departure will most inevitably be within the next few weeks.
Another way to get a cheaper seat is to ask your travel agent about buying tickets from a consolidator. Consolidators buy tickets in mass quantity at wholesale prices so in this, they can give you a deal. It is also not usually best to buy your ticket directly from the airline since it will be more expensive. If you buy it from a travel agent, for some business reason, you will most likely get the exact same ticket cheaper. And trying to buy a ticket over night will cost you too. That is only for emergencies, unless there is an instant seat sale.
Mexican Customs has some really weird rules and unfortunately, if you are flying to Mexico, sometimes the airline will also take those rules into their own hands. Your travel agent should fill you in on all the details but just in case they forget something.....
Mexican Border requirements
It is not required that you have a passport but a current photo ID (drivers license) and your birth certificate will do. If you can obtain a passport though, it will save you A LOT of trouble. In Canada they cost 60 dollars, are not too hard to get, and will last 5 years. It will be worth the money.
If you are married or divorced and your name on your drivers license differs from the one on your birth certificate you could have problems. The best way to clear this up is to have a passport, BUT if you don't have one, proof of your name change will do. Your marriage certificate can prove it but if you don't have that, phone and ask what else you can use. One woman didn't even make it to customs with her husband. She was denied boarding in Houston Texas with continental airlines because her name was different on her two pieces of ID. Some people say you won't need one, and customs might not even ask but better be safe than sorry.
If only one parent is going you will need a notarized letter signed by the parent staying at home. When I was a minor, I
traveled with my grandma and the funny thing was that customs never asked for this letter, but the airline denied me boarding.
Thank heavens the plane was 5hrs late or I would have never made it (take off time was supposed to be 11:30am, and the notary guy was to arrive around 3pm. We took off at 4:30.) This was a frustration to me, but most obviously the rule of it is they are trying to stop parents from kidnapping their children and also trying to stop the children's black market here in Mexico.
If a minor is traveling alone -- they will also require a notarized letter signed both parents. This might not be necessary if a minor of 16 or over HAS an adult passport. When I traveled, I had a passport (an adult passport, because in Canada, minors 16 and over take adult passports) and I did not carry a note. I did encounter difficulty with both customs at times -- American and Mexican -- but was NOT denied passing because I didn't have the note. This was mainly because I had a passport though. However, I traveled alone a second time and not one person blinked an eye, but better be safe and send a note. As for children under 16, in Canada, they must take a children's passport and then in that case will most likely still require a note. If you want more information, phone the Mexican consulate and your local passport office.
Note: For children traveling alone, and their parents are divorced or separated. The child will NOT need a note from both their parents. Only the custodial parent has to sign but you must INCLUDE your custody papers, proving you are the parent who sent the note and you have full custody. When joint custody is an issue, then both parents will be required to sign the letter. (Since no full custody was authorized and one parent must inform the other)
All notes must be Notarized of course and other things to include are divorce papers, a death certificate or guardianship papers if applicable.
You can obtain a notarized letter from any official Notary in your local town and sometimes even in the airport. You will be required to show some ID and swear that what you say on it is true. Then your signature is required as well. It will be marked with a seal and signed by the notary, and don't forget to include any special papers. Only one parent, the one staying home, will have to sign if the child is traveling with someone, even a grandma. If the child travels completely alone, well you will probably need 2 signatures or papers if you only can provide 1 signature (please see NOTE: above)
You can also obtain a form from Mexican Government Tourism Offices. It must be complete and notarized. The form is is called:
Permission for a Minor to Travel in Mexico
And it will also suffice as a letter. It might even be the best notarized letter you can get. So if you have that option choose this one.
In the end, make sure you have allllllllll required documents. Make a checklist and keep a separate envelope with these vital documents in them. If you still feel unsure, ask your travel agent as it is their duty to keep you informed. And don't forget about the airline, where as customs requires these thing, sometimes they don't ask, but the airline will. Forgetting something of importance could ruin your trip.