RB44 - You pose a good question regarding options to getting to Namibia when it does open up. Before everything shut down, here are the airlines you could use, (that I remember) to get there.
1 - Air Namibia: Offered daily flts from Frankfurt and multiple flts a day from J'berg. They were in trouble before the WuFlu and are in even worse shape now. I personally don't think the long haul flt from FRA will come back. I think they are still minimally operating just domestically and may be able to open up just regionally. By regionally, I mean flts between Windhoek, J'berg, Vic Falls and maybe Gaborone. I've flown on them in the past but they CNX'd our return flt from Gaborone last Aug with just 24hrs notice and no alternate plan to get us back to Windhoek. When we called, they finally got us sorter out on SAA via J'berg and our luggage and rifles got stuck in J'berg and only arrived in Windhoek a couple of hours before we got our flt home on KLM late the next afternoon. I'll personally not book with them again unless absolutely necessary.
2 - Delta/KLM: Offered flts 3-days a week from the US on Delta to Amsterdam and then KLM from there direct to Windhoek. We did this route last Aug. Good flts both ways. Had a long layover in AMS (12hrs) going in and 4hrs coming back. You do have to obtain a transit permit for taking firearms thru AMS even though your luggage/firearms are checked all the way thru. The form is a little long but simple enough but, you have to submit it 8-WEEKS prior to your flt. I didn't realize that and submitted it 5-weeks prior and with a few emails they did issue the transit permit 3-days before we departed. I'd fly this route again.
3 - Qatar Airways: They just opened 3-day a week service to Namibia last year from Doha. They called it "direct" but it's more "semi-direct" as they plan makes a short 1hr stop for fuel and a few PAX and continues on. I know a guy who made this trip every couple of months and says it's the only why to go. You have to get a transit permit for firearms thru Doha. Is pretty easy and just have to submit, passport, confirmation number, 4457 and invitation ltr at least 2-weeks prior. Don't know if/when they will open this particular route up. I do know they are at least planning to flying Doha to J'berg this Aug, as we've got 3 tickets booked two weeks ago for Chicago, Doha, J'berg, Gaborone and back.
4 - British Airways: I don't remember if they had daily flts from London to Windhoek or just 3-days a week. There were several guys I know who flow that route a lot and loved it. Have to be careful when booking though and IF you have to change airports (Gatwick and Heathrow) traveling with your firearms is NOT practical as you have to hire a transfer service and it was VERY expensive. One guy I know who did this route every year and did the airport transfer just used PH's loaner rifles. He did miss his flt once to Windhoek because "the tube" was either on strike or shutdown. I looked into this route in the past and figured out a way to get from the US to the same airport for the leg to Windhoek but it added an extra stop and then BA added an extra fee to carry firearms, I said screw it. The couple of guys who've done this route in the past via the same London airport say it was very good and even with the extra firearm fee was less than Delta to J'berg and in. Oh, and be careful as BA partners with a carrier named Comair. Comair does NOT carry firearms.
5 - Lufthansa/Swiss Air: I'm putting both of these together because you can use them to book flts to Windhoek and they are the major carriers hubbing out of Frankfurt and Zurich to J'berg, but then they code share with either Air Namibia, SAA, SAA Express or SAA Airlink. We've flow these routes in the past and except for having to transit thru J'berg and change planes and carriers they were good routs and flights. Trouble is with SAA looking like they are tits up along with SAA Express and Air Namibia on life support, that pretty much leaves SAA Airlink currently the only option from J'berg to Windhoek.
6 - Ethiopian Air: They had direct flts 3-days a week from Addis Ababa to Windhoek. I've read guys experiences using them and they were all very positive. The airline and Addis Ababa were becoming the "hub" for travel into northern Africa, like J'berg has become for southern Africa and actually starting to rival J'berg as a hub for travel into all of Africa. Unfortunately, they got a pretty bad rap for the airliner crash last year and that had more to do with the design of the A/C than the airline itself.
7 - By boat: I say this kind of tongue in cheek BUT, there are cargo freighters that that make weekly r/t's between Savannah GA and Walvis Bay. You can actually book a limited number of passenger cabins on them. Unlimited baggage as long as YOU can schlep on board yourself and can carry firearms/ammo. Technically you can do you your temp firearm paperwork and permit in Walvis Bay but you'll likely be the first and nobody working in the port will likely know what to do. Just though I'd toss this in for fun and YES, I actually looked into this!!
The big questions are obviously, when the boarders will be open and what carriers are going to offer service at all and how fast will they add flts and planes. I don't believe it will be like flipping on a switch and all flts and routes will open immediately. I do think it might come back kind of quickly due to a LOT of pent up demand.
As to when Namibia will open? I don't think they (Govt/Pres) has any idea. Just like here, it is a balancing act between the economic damage and loss of life to the WuFlu.