FWIW, I had a chat about the "that fare is no longer available" problem with an EXP phone agent last week when I phoned to book a BKK-NRT-DFW-BOS roundtrip and all the fares were no longer available when I tried to select a flight combo.

She said that codeshare seat inventory for flights on other carriers' metal do not update in real time except when someone wants to buy one. So you may well be looking at last night's availability which isn't updated until you try to grab the seat. Then AA's computer checks with the operating carrier (JL in my case) to see if the seat is available.

This only sounds partially logical to me; but I provide it here as a possible additional piece to the puzzle.

I've seen this happen firsthand, with codeshare flights showing 0 seats in the Y inventory and 7+ in a lower bucket, but it immediately bounces back as unable if you try to book the lower class.

Had this happen for trying to book a flight from DFW-NRT-SGN-NRT-DFW. Through AA flights, it says the fare is no longer available and has raised by $275. however, for $3 more of the original fare, the JL codeshare for same flight for one segment will solve the error problem. I really don't want to book with JL segment as it's 0.5 EQM and no bonus miles for being PLT. Has anyone had any recent success calling the reservations line to accommodate booking on AA only flights?

aa.com: The flight(s) or fare selected is no longer available. Please modify...
 

Try rebuilding by schedule instead of price. That's resolved some issues for me in the past.

I keep getting the fair is unavailable when I go from JFK-DUS-ZRH on an airberlin codeshare using miles.. I get this whenever I select the airberline codeshares. The british airways codeshares work fine, but stick me with those fuel surcharges.

I am sure I can call to book, but has anyone been experiencing this when booking on AA with an airberlin flight?

Was looking to book a very similar routing yesterday too (DFW-NRT-SIN and SGN-NRT-DFW). According to the EXP desk, it's indeed the JAL segments that are coming back "unconfirmed" in the fare buckets the website was showing.

I ended up having to ticket at one of the higher buckets as they weren't able to do anything manual to fix it...

I've been looking to book using miles to either FRA, AMS, DUS from CID and am getting the "selected flight is not available" msg on AB codeshares. Likewise, I'm not eager to use the BA codeshares ($998 tax/surcharges for 2 one-way).

From CID I see the following itin via AB, CID/ORD/TXL/DUS, CID/DFW/EWR-JFK/DUS, CID/DFW/CUN/DUS, & CID/DFW/RSW/DUS. Only the one via CUN allows me to hold it, the rest come back as "The flight you selected is no longer available. Please modify your request." Am trying to find either milesave 1st or Business on various dates in Sept.

Same problem here (I may have posted about it in this thread). I called the EXP desk; most of the AB codeshares were not available (IIRC some were available in Y but not in J) so should not have shown up in the selection in the first place.

The AA website is full of weird behaviour at the moment - we will see what happens once integration with US starts. I remember when US integrated with America West they also had a rough time.

As the threads below show, it's been going on for months now:

http://www.flyertalk.com/forum/ameri...rds-issue.html

http://www.flyertalk.com/forum/ameri...ilability.html

http://www.flyertalk.com/forum/ameri...ir-berlin.html

I ended up checking again today for the same flights I had previously mentioned...It now says it's available for the lower fare. Woohoo! Thank goodness I waited!

After FINALLY finding a route with C inventory to clear expiring SWUs, to get this flippin' message is so frustrating !!

Check below for errors
The flight(s) or fare selected is no longer available. Please modify your request.

What a wild goose chase this has been!

Sanity check: Should this be 0.5 EQP rather than 0.5 EQM? My understanding is that EQM is always actual miles, while points vary:

certain discount economy fares on JL earn 50% EQM (or 30%!).

JL Earning Chart

Thanks for the link ... makes it an easier call to skip the SGN MR idea.

Just hating the idea of letting a couple SWUs expire ... still scouring!

I have run into this quite a bit recently. When I do encounter this I switch to Google Chrome Incognito and then the flights and fares are available for booking with no issues.:D

I had problems with this on Tuesday using both IE and Firefox. Didn't matter whether I was logged in or not.