Agree or disagree?

My vote is actaully a "no...but" back in the 3e version of dragonlance you could play a Draconian with the ability to "glide" so its not a great stretch of the imagination to port that over to 5e, I'd likely do it like the winged variant of teifling where it replaces one of the dragonborn traits (probably the breath weapon) or maybe as a feat with an armour restriction similar to that of an Aarakocra or limit the ability to fly to be more like the slow fall monk ability.

No with the existing racial traits already have Dragonborn don't need to fly. I could see it getting the ability to fly with a subrace similar to Wingled Tiefling variant or a feat like Dragon Wings in 2017 Unearthed Arcana.

Dragonborn are not winged, so flying is at odds. Though a subrace of say wyvern Dragonborn, that have a flyspeed in exchange for their breath attack would be fine.

But at that point, you could just take a winged tiefling and call it dragonborn. The traits would already match.

People already hate winged tieflings and almost always ban them from games.  Not sure why dragonborn with wings would be any different.

Flying speeds create a number of problems for DMs - “cross this obstacle” style encounters become meaningless, melee monsters have a hard time targeting them, etc.  These are not insurmountable problems, to be sure, but they are still problems, particularly for newer DMs who might not know how to handle flying PCs.

That is all fine for supplemental races, like Aarakocra or variant Tieflings, because it is pretty easy for a DM who does not want a flying player character to say “I do not allow those supplements.”  It is a lot harder for the DM to deny players access to something found in the core books—most players acknowledge the DM might limit what supplemental options can be used, but few players are going to be thrilled with “you can’t even play this thing from the base game because I do not like the mechanics.”

In my opinion it just makes sense but I’m ok with nerfing that flying speed a little, because I understand

Quote from Enrif >>

Dragonborn are not winged, so flying is at odds. Though a subrace of say wyvern Dragonborn, that have a flyspeed in exchange for their breath attack would be fine.

But at that point, you could just take a winged tiefling and call it dragonborn. The traits would already match.

 I know but they should because they are DRAGONborn. Emphasise on the DRAGON part of it

Dragonborn does not mean dragon.  They already have a breath weapon.  You don't get EVERY trait of an actual dragon just because it's in your name. 

Everything always depends on the DM and the game they are running. If a player wants to create a dragonborn with a flying speed and the DM is ok with that, then why not. If the DM says no, then that's ok too.

No, they would be way to op if they was winged. You can create a draconian though which has wings but no breath weapon. Maybe make it a choice. Wings of breath weapon.

Quote from Yurei1453 >>

Dragonborn does not mean dragon.  They already have a breath weapon.  You don't get EVERY trait of an actual dragon just because it's in your name. 

 And not every dragon can fly, either.

Quote from Yurei1453 >>

People already hate winged tieflings and almost always ban them from games.  Not sure why dragonborn with wings would be any different.

 Do they?  Even among PC races with the ability to fly, winged tieflings seem to be among the least popular options, not sure why anyone would feel the need to single them out for banning.

My vote is whatever the DM decides.

It isn't much more complex than that. 

I have one species capable of flight available for PCs (basically a big pixie). I wouldn't allow Dragonborn to have flight because, well, I wouldn't allow dragonborn. or Draconian. 

I would allow winged tieflings, , even though the equivalent isn't possible at this time. A lot of it depends on the worldsetting.

I prefer the design concept of the Dragonborn not having permanent wings; I like them having a traditional humanoid form. They also have good features now and do not need additional features to make the playable. 

Winged creatures should have to take additional detriments/concessions to their character.  I know the game places armor restrictions but I feel the game should add additional rules with restrictions to winged characters. 

Quote from Jackleoflanterns >>

Quote from Enrif >>

Dragonborn are not winged, so flying is at odds. Though a subrace of say wyvern Dragonborn, that have a flyspeed in exchange for their breath attack would be fine.

But at that point, you could just take a winged tiefling and call it dragonborn. The traits would already match.

 I know but they should because they are DRAGONborn. Emphasise on the DRAGON part of it

And don't get me started on koBOLDs, emphasis on the BOLD part of it.

I'm just being silly about typography.

They're getting temporary flight in the 2024 PHB, that's fine by me:

I don't think any core race needs permanent flight, let new DMs and players get comfortable with 2D first.

Quote from MidnightPlat >>

Quote from Jackleoflanterns >>

Quote from Enrif >>

Dragonborn are not winged, so flying is at odds. Though a subrace of say wyvern Dragonborn, that have a flyspeed in exchange for their breath attack would be fine.

But at that point, you could just take a winged tiefling and call it dragonborn. The traits would already match.

 I know but they should because they are DRAGONborn. Emphasise on the DRAGON part of it

 

And don't get me started on koBOLDs, emphasis on the BOLD part of it.

I'm just being silly about typography.

 
Wouldn't that be Kobolds, then?

I hear they are more dangerous than Kobolds, but be careful to avoid the Kobolds.