Does the price of a domestic US (east to west coast) flight depend on from where I book it?

I'm planning to fly (one-way) from NY to SF. I'm based in Europe and I wonder, will the price (regardless of currency issues) be significantly different if I book it from here, or only when I get to the US? Obviously, I believe its going to be a return flight where I accidentally miss the return part.
Best Answer
It has been proven that websites can do pricing on all kinds of elements (your search history, the browser you're using, your location, your laptop brand, ...) Check this article: lifehacker: how websites vary prices
I don't know if any of the US airlines use this practice. I'm a Platinum FF with AA.com and I always compare the prices they offer on their US site with the prices on their European sites. Sometimes the US site has cheaper prices but more recently is has always been the EU site that showed me the best price. Know however that (in case of AA) the US site requires a US Credit Card to pay for the fare.
I don't know how long upfront you will arrive in the US but I wouldn't push your luck and wait till the last minute to buy your ticket. Maybe your dates are flexible and NY-SF is probably a pretty popular route with a lot of competition (just guessing) but you may end up paying a lot more.
The best time to buy your tickets is not the very last minute but rather on average 8 weeks to 1 month upfront. (Check this article: Best time is 54 days out) I would rather look at this time window than your location.
When travelling domestically I always use the 8-4 weeks time window. For international travel 6-4 months. In my experience we always ended up paying a fair price. To decide what a fair price is I compare with historical and competitors prices.
A LITTLE EXTRA: If you want you can use a browser plugin like Hola. This would allow you to use a US IP address and would simulate that you're based in US. Check the first link in my post for some more tricks.
Also, in this particular case a return might be pricing cheaper than a one-way but it's a myth that this is always the case.
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What day of the week are flights cheapest to book?
Tuesdays and Wednesdays are the cheapest days to fly domestically. The cheapest days to depart if you're flying within the U.S. are midweek \u2014 generally Tuesday or Wednesday. For economy tickets, Tuesdays are about 24% lower than peak prices on Sundays, which translates to savings of about $85 per ticket.What day are flight prices cheapest?
Cheap days: In the U.S., Tuesday, Wednesday and Saturday are usually cheapest. For international travel, weekdays are usually cheaper than weekends. Expensive days: Fridays and Sundays usually cost more, especially in the U.S.Why is it cheaper to fly further?
Re: Why is it cheaper to fly further? Yes it's all to do with market forces and supply/demand. Non stop routes are convenient and so you pay more for that convenience. Indirect routes are less convenient and so you get a price break.Why are flights cheaper on Tuesdays?
According to the internet, the best day of the week to buy flights is a Tuesday. Apparently, this is due to airlines announcing deals on Monday evenings. By Tuesday at noon, other airlines are trying to match those deals. So Tuesday afternoons are the best time to hunt for reduced airfare.HOW TO FIND CHEAP FLIGHTS - My Best Tips After Booking 500+ Flights
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Answer 2
Due to the vast number of sites offering air tickets, mere probability dictates that the answer might be yes for at least a couple of them.
If you want to investigate whether any given site offers different prices to customers depending on which country they are accessing the site from, you can use an Internet proxy to make it seem to the site that you are accessing it from your country of choice. This will allow you to compare various countries.
You can find a variety of free proxy services. I like hide.me. They allow you to choose from a variety of countries (including the US) as your proxy country.
When using a proxy, you can use the site DNS Leak Test to confirm that the proxy is working as it should be.
Answer 3
The answer to the specific question is no. The price will not change significantly if at all based on where you are physically located.
The price you pay can change based on the local site/currency/credit card you use, but that's due to exchange rates.
Note, for US carriers and domestic routes it is highly unusual to find round trip tickets priced less than one way tickets currently. The 'leisure fare' and 'Saturday night stay' are pretty much gone.
Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
Images: Ryutaro Tsukata, Andrea Piacquadio, Samson Katt, Karolina Grabowska