There doesn't seem to be a good reason why that wouldn't be the case. Both ships were relatively low on power but the key concern seems to be that they're going to burn up in the atmosphere rather than there being any shortage of air.
Since we know that gliders can fold their wings and since there's enough space in the shuttle for both gliders, it seems sensible that they were put into the (unpressurised) cargo hold and then landed as normal.
CARTER: Same here, sir. But I don't think we bought ourselves much time. Our glider's had it.
TEAL'C: I concur.
CARTER: We got cooked pretty bad in the explosion.
CARTER: We're low on power and in a fairly low orbit, so I don't imagine it will be too much longer before we burn up in Earth's
According to the MGM-Licensed "Stargate SG-1 Goauld Death Glider Collector Scale Replica", the Death-Glider's dimensions are 45.9ft x 27.99ft x 14ft. With the wings fully folded and stowed, the dimensions would shrink to 15ft x 27.99ft x 14ft. That being the case, there would be sufficient space in the Shuttle's cargo hold to store both gliders (stacked sideways) with a few feet left over.