I've never flown internationally with anything other than a non-stop flight or an overnight layover. Looking at airfares through IcelandAir right now, one of the cheapest flight options for Seattle > London involves a 55-minute layover in Reykjavik. Is that at all plausible? I don't really have any reference point for how long international layovers typically take -- do we go through customs in Reykjavik or in London? Will the fact that I will be traveling with a UK and a German visa create further delays? Our other choice for the same price is a 9-hour layover in Reykjavik, and I'd rather not lose a whole day in London for that.
This flight is a good $150-$200 cheaper than all other options, so I guess my question is, is the risk of missing our connection significant enough to forego the cheaper price.