Best day of the week to book airfare

There are no good days and bad days, just good fares and bad fares which can be very random as witnessed in the two recent deep airfare sales last month and this month.

EDIT: if you look at current fares on itasoftware.com for a month long search you'll see only a slight rise in prices for some Friday's and one Thursday. I'm checking LAX to LON for the entire month of June. Always best to do a monthlong search if you have some flexibility with your dates.

You can go to flights.google.com and enter your origin and destination. When you click on the calendar icon and scroll through the months, you'll see prices by day and can check for patterns. They may vary with holidays, business demand, etc. Often Saturday is cheaper than Friday and Sunday. Sometimes there's a mid-week dip, too, but it's an individual thing.

I can't get the monthly fare display to appear with a multi-city (open-jaw) itinerary, so I think you need to take a look at the two round-trip flights separately to see what appear to be the best travel dates within your range of possibilities, then re-set the search for multi-city.

While you might find lower fares for specific days of the week, such as Thursdays being less costly than Saturdays for many domestic destinations, there really is no better day to buy the tickets to get lower fares. That is, buying a ticket on Monday for a Thursday flight will usually be the same cost as buying the same ticket for the same Thursday any other day of the week as long as you are buying it far enough in advance. Gone are the days when buying a ticket Tuesday thru Thursday meant you would save hundreds off the ticket price because all the airlines would put everything on sale those days.

You can sometimes get a lower fare when you book further in advance instead of waiting to the last minute, but even that isn't always true anymore. Airlines overestimate demand for certain flights and price them too high initially and then find too many empty seats as it gets close to flight time so they drop the price to hopefully fill the remaining seats.

Best approach is to watch ticket prices on one of the web sites mentioned by others here and when you see a fare that looks good for you and works as far as the departure and return days, just book it.

The best day of the week is Tuesday, in the afternoon.
I usually look on ITA Matrix to come up with the best airfares--and the best times in the air. Absolutely lowest price is not always best, as you might have to go through Tim-Buck-Too to get the lowest rates.
I'll watch the airfares for awhile, and I'll keep my ears open for one day special airfares. I also receive a number of flight consolidators' emails.
When the fares come in at much, much less than normal prices, I'll grab'em.
Right now, Norwegian Air Shuttle is my favorite low cost airline, and you can connect into their system in Oslo or London-Gatwick to other European locations. See Norwegian.com

And if you do post on Flyertalk, frame your question so it is clear you are talking about which day is cheaper to fly, not which day of the week is best for buying the tickets. At least one person above misunderstood your question and answered the best day to purchase ( and I think answered that wrongly, or maybe was being facetious).

thank you very much for your advice. I understand I did not pose this question very well. I have been reading and responding to a variety of posts since discovering this forum and I have witnessed many twits and rude/condescending responses. This does not surprise me as on our first RS tour this year I witnessed the same behavior. There maybe a no grumps policy (and I must say that policy seems not to extend to morning breakfast time. Perhaps that policy should be revised as no grumps after morning coffee... ) but there definitely is rude and condescending behavior on tour.

I was confused too because the title says "best day of the week to book airfare" but within the question it says "best days to fly." I thought you received many very helpful answers about looking at month-long calendar prices, but that research has shown there is no better time or day to book, although David has found one.

Disappointing you had some inconsiderate people on your RS tour. I have taken 10 tours so far with RS and have not run into that type of behavior. I hope you will give the RS tours another chance.

There have been spouses that obviously were not enjoying the entire experience, people who expected their baggage to be carried for them, and others who constantly complain that they could have booked the same trip themselves for about half what they paid, and so on. But those were rare and isolated and it was easy not to hang out with them so they really didn't impact my enjoyment.