UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16 UNDER

THE SECURITIES EXCHANGE ACT OF 1934

For the month of July, 2023

Commission File Number: 001-38049

Azul S.A.

(Name of Registrant)

Edifício Jatobá, 8th floor, Castelo Branco Office Park

Avenida Marcos Penteado de Ulhôa Rodrigues, 939

Tamboré, Barueri, São Paulo, SP 06460-040, Brazil.

+55 (11) 4831 2880

(Address of Principal Executive Office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F x Form 40-F ¨

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):

Yes ¨ No x

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):

Yes ¨ No x

São Paulo, July 7, 2023 – Azul S.A., “Azul”, (B3: AZUL4, NYSE: AZUL), the largest airline in Brazil by departures and number of cities served, announces today its preliminary traffic results for June 2023.

Consolidated passenger traffic (RPKs) increased 15.0% compared to June 2022 on a capacity (ASKs) increase of 12.6%, resulting in a load factor of 80.9%.

“In June, our rational domestic capacity deployment combined with a strong international demand led us to increase our load factor in a healthy revenue environment. I’m very excited for the strongest seasonal period ahead of us,” says John Rodgerson, Azul’s CEO.

Azul S.A. (B3: AZUL4, NYSE: AZUL), the largest airline in Brazil by number of flight departures and cities served, offers 1,000 daily flights to over 150 destinations. With an operating fleet of over 170 aircraft and more than 14,000 Crewmembers, the Company has a network of 300 non-stop routes as of December 2022. Azul was named by Cirium (leading aviation data analysis company) as the most on-time airline in the world in 2022, being the first Brazilian airline to obtain this honor. In 2020 Azul was awarded best airline in the world by TripAdvisor, first time a Brazilian Flag Carrier earns number one ranking in the Traveler’s Choice Awards. For more information visit www.voeazul.com.br/ir.

One-fare paying passenger transported one kilometer. RPK is calculated by multiplying the number of revenue passengers by the number of kilometers flown.

This traffic release includes estimates and forward-looking statements within the meaning of the U.S. federal securities laws. These estimates and forward-looking statements are based mainly on our current expectations and estimates of future events and trends that affect or may affect our business, financial condition, results of operations, cash flow, liquidity, prospects and the trading price of our preferred shares, including in the form of ADSs. Although we believe that these estimates and forward-looking statements are based upon reasonable assumptions, they are subject to many significant risks, uncertainties and assumptions and are made in light of information currently available to us. In addition, in this release, the words “may,” “will,” “estimate,” “anticipate,” “intend,” “expect,” “should” and similar words are intended to identify forward-looking statements. You should not place undue reliance on such statements, which speak only as of the date they were made. Azul is not under the obligation to update publicly or to revise any forward-looking statements after we distribute this press release because of new information, future events or other factors. Our independent public auditors have neither examined nor compiled the forward-looking statements and, accordingly, do not provide any assurance with respect to such statements. In light of the risks and uncertainties described above, the future events and circumstances discussed in this release might not occur and are not guarantees of future performance. Because of these uncertainties, you should not make any investment decision based upon these estimates and forward-looking statements.

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

                                                                                                                By:   /s/ Alexandre Wagner Malfitani
                                                                                                                Name: Alexandre Wagner Malfitani
                                                                                                                Title: Chief Financial Officer

	Jun-23	Jun-22	% ∆	2Q23	2Q22	% ∆	YTD 2023	YTD 2022	% ∆
Domestic
RPK (million)	2,202	2,158	2.0%	6,490	6,666	-2.6%	13,193	13,108	0.6%
ASK (million)	2,784	2,768	0.6%	8,282	8,571	-3.4%	16,787	16,596	1.2%
Load factor	79.1%	78.0%	+1.1 p.p.	78.4%	77.8%	+0.6 p.p.	78.6%	79.0%	-0.4 p.p.
International
RPK (million)	692	359	92.8%	1,945	1,004	93.8%	3,840	1,845	108.1%
ASK (million)	793	409	94.2%	2,281	1,170	95.0%	4,575	2,209	107.1%
Load factor	87.3%	87.9%	-0.6 p.p.	85.3%	85.8%	-0.5 p.p.	83.9%	83.5%	+0.4 p.p.
Total
RPK (million)	2,895	2,517	15.0%	8,435	7,670	10.0%	17,033	14,954	13.9%
ASK (million)	3,577	3,176	12.6%	10,563	9,741	8.4%	21,362	18,805	13.6%
Load factor	80.9%	79.3%	+1.6 p.p.	79.9%	78.7%	+1.2 p.p.	79.7%	79.5%	+0.2 p.p.