Airfare

Searching for Airfare

Orbitz

SideStep

Mobissimo.com

and the other travel booking sites like Travelocity

Get 5% Off from United's Website

FareChase

OnTheFly Travel

Searching Alternate Airports

Expedia Used to Have Cool Tools, They Don't Offer Them Anymore
Not directly, anyway. But the direct links still work.

Airline Fare List

Fare Compare

Travelocity Also Has a Fare List Engine

When Should I Buy My Ticket? Or, Fare Goes Down After I Purchase...

Delta

Where Can I Go Inexpensively From Where I Live?

Yahoo!'s Best Fares

SmarterLiving Airfare Deals

Travelocity's Dream Maps

Sites to Check for Period Good Deals

Travel Zoo Top 20

MSNBC's Travel Deals Blog

Advanced Tools

Class Availability Tools

Availability Tool (Software Install, Very Powerful)

ITA Software

Orbitz

help section

Where Should I Sit On the Plane?

Seat Guru

Seat Expert

How Can I Earn the Most Miles for My Trip?

Unofficial Guide to American Airlines AAdvantage

Unofficial Guide to United Airlines Mileage Plus

Searchable Database of Current Mileage Promotions

How Many Miles Will I Earn for My Trip?

Free Frequent Flyer Miles

Flyertalk.com

Miletracker

Update 6/6/04

as a part of a new application, DeskPort

Yodlee

MileManager

Update 10/26/04

re-released as a standalone application

USA Today

I'd love comments/feedback/additions/modifications! Let 'er rip!

There are two ways to book your itinerary: directly from the airlines' website or from a aggregating website/agent/consolidator. For short trips for which nonstop flights are available, the two methods are will yield itineraries with the same schedules and flights. The advantage of the fare search websites in this case is that they will report the fares from several airlines on the same page thereby saving you the effort of having to visit multiple airline websites and doing a search on each and having to note down the results to compare them later. Nevertheless, for some airlines, you might get a better price directly from their website/search tool or through a discount coupon, an example of this being Southwest.

For longer itineraries, there can be various combinations for flights that will get you to your destination. These flights can be from different airlines and so it may not be possible to get your entire itinerary from the website of a single airline and you may have to book parts of your journey individually from different airlines. This is where the aggregating websites come into their own. They will consider various possible combinations of flights and stops in an attempt to present you with the best possible fare and you can book your entire itinerary in one go. This is even more important for long/international trips because as the length increases, the number of possible combinations rises exponentially.

Fare Aggregating Search Websites - You Can Book Your Tickets With Them Directly

Southwest doesn't share its deals with aggregators, so to get their best deals you need to use their low fare alert application
Ding! As of 3/20/06 Ding is available for PC and Mac.

Fare Search Website - Plan Travel Here and Then Buy From Other Places
Try http://www.bookingbuddy.com to quickly search on almost all individual airline sites and other search engines. Its really easy to use and saves a lot of time.

Travel HUB, Good consolidator search engine, can sometimes find excellent deals on international flights.

AirlineConsolidator.com, another consolidator engine. It's always best to search multiple consolidators to find fares that aren't published elsewhere.

Farecast.com predicts airfares for most major US routes and offers a metasearch like Kayak, Farechase, etc. This answers the question above on "When Should You Buy?".

Yapta.com is also a newcomer and has an application that monitors the fares for your specific flight and helps you determine whether or not you can get a refund from the airline.

Kayak now has a flexible date search.

MileMavenMiles promotions by route

www.ticketspotter.com

http://www.mobissimo.com/search_airfare.php

Had some good results here CheapAir

EUROPE
Two websites that find the discount carriers in Europe

Flybudget.com - use button on left to search airlines
and

attitude travel

ITA Software Beta is absolutely the first place to search for fares. This is not a booking service. It's the software engine that major airlines use to build their booking services. You'll frequently find fare combinations that no airline or travel agent would be able to find for you. It gives you the specific flight codes to ask for. The only drawback -- you may have to pay an agent or phone booking fee in order to get somebody to book the low fares it found. Also note: No Southwest. (shared by Fis)

LastMinuteDeals.com: Offers Air/Hotel or Air/Car Rental packages. The package deals can sometimes be better than the best prices you can find for just flight only (at least that was my experience for a next-day flight returning on Memorial Day weekend). They show you at the searching which airline and rental car company will be used. Times are also known before purchase. Frequent flyer miles can also be earned. Email confirmation with airline and rental car confirmation numbers was sent nearly immediately. (shared by Dajabon)

LastMinuteTravel.com: Offers unbelievable deals on Hotels, plus they don't charge booking fees on flights. Check their "Off The Record" deals for a really good value . (shared by CardFrog)

Site59 (a Travelocity site) can be a great source for low-cost last-minute airfare + lodging or airfare + car. I have know situations where friends have booked Site59 trips and never checked into the hotel or never picked up the rental car... or even used a Site59 round trip in lieu of a more expensive one-way ticket.

Yahoo! FareCompare - For new fares several hours before the main sites (expedia, Orbitz, and the like) get them and before anyone can buy them. Also email alerts. Has historical price data every day for the previous two years , showing high/average/low prices, so you really know if a certain fare is a "good deal."

Rock on Vacations

Found fares that even ITA missed!TravelFusion.com

For those of you not willing to pay for ExpertFlyer, you can look up class inventories through www.seatcounter.com.

Students and youths (under 26) in particular should try STA Travel. They make you buy a $22 discount card similar to Student Advantage, but their fares can still be cheaper sometimes. If you don't see anything good online, call them. Also call/e-mail local branches - you'll get a different answer each time. Sooner or later you'll find one you like.

Onetime | Shop, Compare and Save
Join over 30 million users who use OneTime to compare prices and save money on booking travel! OneTime features the leading travel websites, hotel chains and airlines to provide you with the most reliable and comprehensive way to compare deals and save money. In the market for a laptop or plasma TV? Check out the brand new OneTime Electronics, an easy way to compare prices for electronics from popular brands, and save money. Save money and time. Every time.

Very nice and comprehensive compilation! I've also found that you can get some pretty good package deals from America West Vacations if you are going to Vegas or Reno/Tahoe from the east coast. I've gotten 5 night hotel/airfare/car deals for as little as $335 per person. Also, if your airport is served by Southwest, don't forget to check their web site. Some of the "all purpose" sites don't include their fares.

C'mon folks, give me some more feedback so I can add to the original post.

An issue I certainly need to add is checking fares to/from alternate airports... Oakland or San Jose rather than San Francisco... Santa Ana, Burbank, Long Beach, Ontario instead of Los Angeles... Baltimore rather than Washington's Dulles or Reagan... West Palm Beach or Ft. Lauderale instead of Miami.. just to name a few. Alternate airports often have widely differing fares, especially when one is served by a low-cost carrier and the other is not.

This is great and Mobissimo, which I had never heard of, has great fares.

I also like site59 for last minute stuff. Sometimes it is cheapear to get a flight and rental car or hotel than the flight itself on any other site.

Added "When Should I Buy My Ticket? Or, Fare Goes Down After I Purchase.."

Ok you asked for it, you got it:

Add Faremax.com to your list they have lots of Unpublished fares.

Sidestep.com has spyware with it. So take it with a grain of salt. I have yet to see a difference in fares from them.

Searching Alternate Airports

I live near Newark Airport (NJ). Before it was international I used to fly from JFK for international flights. Going through NY to get to JFK was a nightmare. For anyone living in NJ, I would most likely say that they would rather fly from EWR than JFK. Plus the price difference in flights is minimal if none. I'ld rather pay an extra $50 to fly from EWR than JFK. 15 minuite ride, lesser hassle, and easily accessible by car, train, etc.

When Should I Buy My Ticket?

Why weren't seasons mentioned??? HIgh and Low seasons depending on destination. New years eve, christmas, summer, are the high seasons for Europe for example. Difference between traveling to Europe at the End of August with travelling to Europe in early September is easily several hundred dollars!

Sites to Check for Period Good Deals

Travelzoo.com's main link is better IMO than their top 20 deals. At least on the main page you can see a wide variety of deals rather than thei top 20.

Where Should I Sit On the Plane?

Put a Disclaimer that says: Coach Extra is not the same as Coach when compared to price, and legroom.

How Can I Earn the Most Miles for My Trip?

Where is the info for Delta Skymiles ?

Current Delta Skymiles Promotions

As for how many miles will I earn. I suggest you get that info from the actual airline site itself. For example Delta has its MQM calculator which will give you an exact quote of how many miles you'll earn.

Miles

Points.com<--Points Exchange program

Miles4Sale <---- At 4¢ a mile when you desperatly need an extra 500 miles or so.

There are also auctions on eBay where people are selling their miles (technically their selling you a white envelope and "gifting" you the miles) you can get a good deal if you eye the auctions.

Remember: if someone is gifting you their miles or you are claiming an award ticket with your miles that you have to check if the miles are valid for that flight. And also you will not gain any miles on an award ticket.

-----------------------

That was just my 2¢ OP, hope it helps

Great compilation, gleff, thanks!

I've been using www.itasoftware.com looks like they'll have some competition now, thanks gleff!!

This is an excellent list. This should be pin-tacked. Thanks for all your work!

MSNBC: 11 ways to find the best airfares

Start with a general Web search

Use consolidators
Offline or online, consolidators have long been a good source for travel deals. Some of the top consolidator Web sites include Hotwire, cheaptickets, Onetravel and Travelhub. (Online travel agents Travelocity and Expedia also include them in their inventory, but they don't specialize in consolidator fares.)

Use farefinders

Don't overlook airline sites, especially Southwest

Know when to fly
You can reap big savings by flying on low-demand days of the week. If you're going on a weekend trip, flying Thursday and Sunday is reportedly cheaper than Friday and Monday. For trips of any length, Hotwire recommends flying midweek, Tuesday-Thursday. The time of day you fly also can dramatically change the price of a ticket. By selecting "anytime" (when given the option) for your preferred departure time, you'll increase your odds of finding the best deals.

Fly into less popular airports
Like flying midweek, flying into alternative airports can increase your savings. As Hotwire.com co-founder Gregg Brockway always says: "If you're heading to Los Angeles, think Burbank (airport). Heading to San Francisco? Think Oakland or San Jose."

Use local carriers
If you're traveling to Europe, consider some of the European airlines and travel sites for the last leg of your trip, rather than trying to make it all the way to your destination city on the same U.S.-based airline. A Seattle-to-Rome roundtrip ticket would have cost me $655 (excluding fees, and including one layover in Philadelphia) on US Airways.

But by flying to London and then booking a London-Rome ticket at eBookers, I saved about $130 before fees.

Try auctions, but bid smartly

One way to improve upon this is to do your research first, then try bidding at 25%-30% off the lowest published fares you've found elsewhere online. Or, for even more informed bidding, troll message boards such as BiddingForTravel.com, where members post information about bids that were accepted.

Searching Alternate Airports

I live near Newark Airport (NJ). Before it was international I used to fly from JFK for international flights. Going through NY to get to JFK was a nightmare. For anyone living in NJ, I would most likely say that they would rather fly from EWR than JFK. Plus the price difference in flights is minimal if none. I'ld rather pay an extra $50 to fly from EWR than JFK. 15 minuite ride, lesser hassle, and easily accessible by car, train, etc.

It's much easier for most people in north Jersey to get to JFK on public transportation than to Newark Airport --except you, since you live nearby. International fares are cheaper from JFK than from Newark. Best of all, once you take the bus or train to Manhattan, it costs $1.50 to take the A train [subway] to Howard Beach in Brooklyn where you get a free shuttle bus to any terminal at JFK airport.

BUT driving is a nightmare, unless you don't value your car or your sanity. Go to Newark.

Just to add....Last night I was looking for a roundtrip ticket from sac...to det.....check tons of sites...all wanting $529-$656....gezzzzzzz...so I decided to make my own price at Priceline.....$300 accepted ...happy camper here

Ah, but did you check alternate airports? I've recently seen Spirit Air running ~ $175 from the Bay Area to DTW.

The excellent MileTracker software mentioned in the OP has been discontinued. Few have found DeskPort, the recommended successor to MileTracker, to meet their expectations. MileTracker interrogated airline and hotel websites to learn your current mile/point balances every time you launched it, then presented the information in a clear, concise manner. All your user names and passwords were kept on your local computer.

Yodlee.com seems to be the best successor to MileTracker. It keeps your user names and passwords on the Yodlee website.