Looking for the next card for me and DH. I'd like to start earning rewards that will help us to and from Europe in 2022. I think we've narrowed it down to Delta's amex cards for both of us and that could get us to London for four of us. Now thinking of which cards could help us get home (from Paris or Rome). I don't think we'd be able to earn enough Delta for round trip, so looking for another airline for the flights home. I know UR are very flexible and we plan to maximize our earning of them, so looking for other options to fill in the gaps between UR earning cards. I'm just afraid to get into AA because it would probably take a few cards each to get enough miles and with the shut downs I don't know what is safe. So what other options should we look at? I was looking at United, but I'm not familiar with them so I'm not sure if that's a good airline to fly out of Europe. Is there a card/airline anyone would recommend we look at? We're already all planned out for Chase cards, and amex will be focused on delta and possibly Hilton. Preferably business to keep our x/24 low.