Although I've never tried it I think a standard floor pump would be pushing it. Instead, I use a Specialized Air Tool Compak Floor Pump when I travel with my Aerocomfort. It fits well, takes about little space and allows for more stuff like helmet and cloths. Importantly the pump is incredibly easy to use.

http://www.specialized.com/...ol-compak-floor-pump

I use this when traveling: http://www.lezyne.com/...vel.php#.VRqYNZPF8Yc

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Favorite Gear: Dimond | Cadex | Desoto Sport | Hoka One One

I don't have that particular bag but do have an Aerus Biospeed that looks pretty similar. I have a pump that is a bit smaller than my Joe Blow and it fits fine. I just wrap it really well and then zip tie it along the side of the top tube (also wrapped well) so it can't move around. Helmet and shoes also fit in the bag just fine (although the aero helmet is a bit sketchier on the fit).

I think that's what Im going to do...

Wrap and zip tie to frame...

I've done exactly this a few times last year.

Scicon Aerocomfort 2.0 - TT Bike, Floor Pump, Helmet, Bike/Run Shoes, Tools, Suit, Misc Gear.

No issues with the fit & tons of room under the downtube.

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I have used this case to go back and forth between Canada and Europe lots of times. I have packed all kinds of things in there - shoes, tools, three weeks worth of laundry, mysterious powders and gels, etc. I once packed a floor pump but have decided it isn't necessary because a small hand pump works just fine to get you to a bike shop if you have a flat. I think that it was that flight that wrecked the pressure gauge in my pump.

Happy travels
John