Mahan Air's Vietnam launch spotlights multi-jurisdiction contest between Tehran and Western enforcers

Mahan Air’s Aug. 30 launch of passenger service to Hanoi and Ho Chi Minh City opens a multi-jurisdiction contest in which the Iranian carrier, the U.S. Treasury, the European Union, Saudi Arabia, and the Vietnamese government each hold asymmetric stakes and jurisdictional leverage.
The U.S. Treasury’s pressure campaign — built on a 2011 designation, a July 30 transaction ban on Mahan Air’s service providers and sales agents, diplomatic warnings to countries including Oman, and complementary naval operations to halt seaborne traffic through Iranian ports — proceeds jurisdiction by jurisdiction without grounding the carrier.
Vietnam’s bilateral agreement with Iran adds a Southeast Asian node to a network that already includes daily service to Istanbul, Muscat, and Guangzhou, five-times-weekly service to Moscow, and weekly Tehran-Phuket flights, even as a 2024 EU blacklisting and an unrevoked 2016 Saudi ban close other corridors.
Saudi Arabia’s persistence of its 2016 ban and the Saudi-backed Yemeni government’s strike on Sana’a’s runway to block a Mahan Air flight carrying Houthi officials illustrate that regional actors treat Mahan flights as a kinetic security concern rather than a commercial matter.

Mahan Air’s Aug. 30 launch of passenger service to Hanoi and Ho Chi Minh City places a U.S.-sanctioned Iranian carrier into a multi-jurisdiction contest in which each party holds asymmetric power, legitimacy, and urgency.
The U.S. Treasury’s escalating pressure — a 2011 designation, the July 30 ban on transactions with the carrier’s service providers and sales agents, and reported diplomatic warnings to half a dozen countries including Oman — operates in parallel with U.S. Navy operations designed to shut down seaborne traffic through Iranian ports through a blockade, according to people familiar with the matter.
Vietnam’s bilateral agreement with Iran the previous month to expand travel and trade adds a Southeast Asian node to a network already comprising daily service to Istanbul, Muscat, and Guangzhou and five-times-weekly service to Moscow, alongside weekly Tehran-Phuket service launched earlier in July.
Founder Hossein Marashi told The Wall Street Journal in 2022 that compliance with Iranian military demands constitutes a “patriotic obligation,” while analyst Behnam Ben Taleblu has characterized sanctions as raising the cost of operating the carrier without grounding it.

Mahan Air began passenger service to Hanoi and Ho Chi Minh City on Aug. 30 under an Iranian-Vietnamese bilateral agreement signed the previous month, expanding a route network the carrier now lists at 20 destinations despite a 2011 U.S. Treasury designation, a 2024 European Union blacklisting, and a 2016 Saudi ban that has not been lifted. The launch crystallizes a contest in which each side holds asymmetric stakes: the Iranian state and the carrier’s former leadership treat compliance with military transport requests as patriotic obligation, while the Treasury Department’s economic pressure campaign — diplomatic warnings to half a dozen countries, the July 30 transaction ban on service providers and sales agents, and a complementary maritime blockade — proceeds jurisdiction by jurisdiction against a carrier that, as of the Aug. 30 Vietnam launch, still operates daily flights.

Who holds stakes in the contest

Five parties hold the most direct stakes in the route expansion, alongside several whose interests are diffuse or absent from the public record.

Mahan Air and the Iranian state together occupy the carrier’s center of gravity. Treasury first sanctioned Mahan Air in 2011, alleging the carrier flew Quds Force personnel to Syria during the conflict in Syria and to Iraq by bypassing normal security procedures, and alleging separately that Mahan Air transported arms on behalf of Hezbollah. Treasury alleged last year that the carrier had expanded its weapon deliveries to Venezuela. The Iranian government’s reliance on the carrier reflects a Tehran stake in the strategic logistics pipeline the carrier provides — a stake the regime appears willing to absorb higher costs to preserve. The carrier now flies daily to Istanbul, Muscat, and Guangzhou, five times a week to Moscow, and lists regular service to 20 destinations.

The U.S. Treasury is the second center of gravity. Treasury Secretary Scott Bessent’s economic pressure campaign includes diplomatic warnings to half a dozen countries, including Oman, against allowing the carrier to use their airports; the push is designed to complement U.S. Navy operations to shut down seaborne traffic through Iranian ports through a blockade, those people said. On July 30, Treasury banned transactions with Mahan Air’s service providers and sales agents in multiple jurisdictions. Treasury’s lever is access to the U.S. financial system and bilateral diplomatic pressure; its best alternative, if any single country resists, is to escalate by threatening secondary sanctions or naming additional jurisdictions.

The European Union removed a previously available European corridor in 2024 when it blacklisted Mahan Air for allegedly sending drones to Russia, effectively stopping all the carrier’s flights to the 27-nation bloc. EU enforcement operates under a separate legal regime with separate triggers from U.S. secondary sanctions, meaning U.S. escalation against Vietnam does not automatically draw EU alignment. The bloc’s enforcement footprint against Mahan Air within its own airspace is, for now, exhausted by the 2024 measure.

Saudi Arabia banned Mahan Air in 2016 after cutting diplomatic ties with Iran and has not lifted the ban despite a recent rapprochement between the two countries. The Saudi stake is regional security — preventing weapons flow to adversaries. This summer, Yemen’s Saudi-backed government struck the runway at Sana’a International Airport to prevent a Mahan Air flight carrying Houthi officials who had attended the funeral for Supreme Leader Ali Khamenei from landing; the strike sparked a new conflict between Iran-backed Houthis and Saudi Arabia after a long truce. The runway strike signals that Riyadh treats Mahan flights as a kinetic, not merely commercial, problem.

Vietnam agreed to host the new service under its bilateral agreement with Iran the previous month. Vietnam’s stake is partly commercial — capturing passenger traffic and trade flows — and partly sovereign: deciding which airlines may use its airspace on its own terms rather than under external direction. If the United States escalates pressure on Vietnam, Hanoi would weigh the cost of secondary sanctions or trade restrictions against the benefit of Iranian connectivity. The article does not record any U.S. warning specifically directed at Vietnam; Oman is the named example in the public record.

Oman, Russia, and China each host or anchor a portion of the pivoted network. Muscat is currently listed as a daily Mahan Air destination, and Treasury has reportedly warned Oman against allowing the carrier to continue using its airports. Russia and China function as demand-side anchors: the EU blacklisting was reportedly triggered by alleged drone deliveries to Russia, giving Moscow a direct material interest in keeping the carrier operational, while Mahan’s daily Guangzhou service reflects a broader Chinese willingness to maintain normal commercial aviation ties with Iranian counterparties despite U.S. sanctions.

Divergent framings of sanctions pressure

The U.S. enforcement posture, as articulated by a named outside analyst, frames sanctions as a cost-raising instrument rather than a grounding measure. Behnam Ben Taleblu, senior director of the Iran program at the Foundation of Defense of Democracies, said, “Due to Mahan’s continued use to transfer weapons, the regime is going to look to find ways to keep the airline operating. Sanctioning doesn’t mean that Mahan has been grounded but raises the cost to Tehran for continuing operating this airline.” That assessment, taken with the documented Hezbollah and Venezuela deliveries in the Treasury record, points to a Tehran stake in the strategic logistics pipeline the carrier provides.

The carrier’s own self-understanding, as expressed by its founder, frames compliance with state demands as a patriotic obligation rather than as a free commercial choice. Mahan Air founder Hossein Marashi, in a 2022 Wall Street Journal interview after he had stepped down from the company, said: “If the army or Sepah ask Iranian companies, they should help them,” using the Iranian shorthand for the Revolutionary Guard. “We will transport it if they pay money. We have to obey. It’s a patriotic obligation.”

The two framings describe the same phenomenon from opposite vantage points: one as a sanctions calculus of marginal cost, the other as an obligation that overrides commercial calculus.

What the route expansion produces

The carrier’s expansion pattern — Istanbul, Muscat, Guangzhou, Moscow, Phuket, and now Hanoi and Ho Chi Minh City — shows a coherent commercial strategy of concentrating on jurisdictions that have not aligned with U.S. or EU sanctions policy. Each new bilateral agreement reduces Mahan Air’s exposure to Western enforcement while increasing the political cost for the United States of enforcing sanctions one country at a time.

The structural problem for Treasury is that adding Vietnam to its warning list multiplies diplomatic friction faster than it multiplies pressure on the carrier itself. Several of the jurisdictions continuing to host Mahan Air service share an institutional characteristic: each is identified in Treasury or allied assessments as a destination or transit point for Iranian arms or personnel. The pattern positions host jurisdictions as nodes whose continued cooperation the Iranian regime is reported to seek and the U.S. campaign is reported to contest. Vietnam’s role as the newest host adds a Southeast Asian node to a network whose previous known route expansion this year reached Phuket, Thailand, with weekly Tehran-Phuket service beginning earlier in July. Last year, Lebanese authorities searched passengers on a Mahan Air flight that touched down in Beirut after a Saudi news station reported the plane was being used to bring funds to Hezbollah. Iran denied the Beirut flight was used to fund the group.

Parties absent from the public record

The Treasury action of July 30 named service providers and sales agents in multiple jurisdictions as subjects of the transaction ban without a public counterparty representing their position. Airport authorities at the twenty destinations Mahan Air lists — including security and customs personnel who would process arriving passengers — do not appear in the public record. Competing carriers on the affected city-pair routes — Tehran-Hanoi, Tehran-Ho Chi Minh City, and the other named services — face altered competitive conditions without a documented role in the route-allocation process. Insurance and re-insurance underwriters carrying exposure on Mahan Air operations are absent from the public account. Thai authorities, whose Phuket service began earlier in July, are not named in the public record of Bessent’s reported warnings, even as Oman is.

How the stakeholder field sorts

Sorting the named parties by combinations of power, legitimacy, and urgency produces a tiered map of the contest.

At the top tier sit parties combining all three attributes. The Iranian state holds power through regulatory and security perimeter over the carrier, legitimacy through carrier registration under Iranian law and Marashi’s stated view of state demands as obligatory, and urgency through the imperative to preserve the carrier’s logistics pipeline. The U.S. Treasury holds power through the 2011 designation, the July 30 transaction prohibition, and the warning campaign; legitimacy through U.S. foreign-policy and counter-proliferation mandates; and urgency through contested enforcement. Vietnam, as the new receiving jurisdiction, holds power as sovereign authority over the new routes, legitimacy through the bilateral agreement with Iran the previous month, and urgency as the destination whose posture will shape the next phase of the contest. Mahan Air itself holds route authority, licensing legitimacy under Iranian law, and urgency of expansion under sanctions pressure.

A second tier combines power and legitimacy. The European Union’s 2024 blacklisting removed a previously available European corridor and exhausted its enforcement footprint against Mahan Air within bloc airspace. Saudi Arabia’s 2016 ban, maintained despite rapprochement, follows the severing of diplomatic ties with Iran. Turkey, Oman, China, and Russia — through daily Istanbul, Muscat, and Guangzhou service and five-times-weekly Moscow service — hold airspace authority and bilateral standing that shapes the carrier’s actual reach.

A third tier pairs power and urgency. U.S. Navy maritime blockade operations provide the kinetic complement to Treasury’s economic campaign, according to people familiar with the matter. Yemen’s Saudi-backed government demonstrated capacity and immediacy by striking the runway at Sana’a International Airport to prevent a Mahan Air flight carrying Houthi officials from landing.

A fourth tier carries legitimacy and urgency without comparable power. Passengers and diaspora communities depend on Mahan Air for movement between Iran and a shrinking set of destinations. Houthi officials sought transport to Khamenei’s funeral. Lebanese passengers were searched on a Beirut Mahan flight after a Saudi news station reported the plane was being used to bring funds to Hezbollah. Iranian commercial actors continue to pursue trade expansion on the carrier’s network. Iran denied the Beirut flight was used to fund Hezbollah.

A final tier — service providers, sales agents, airport authorities, competing carriers, and insurance underwriters — carries consequences of route and sanctions decisions without the standing to shape them.

Additional considerations

The Mahan Air route map, as reported, reflects a stakeholder field in which the U.S. Treasury and allied jurisdictions — the 27-nation EU bloc and Saudi Arabia — have imposed formal restrictions; a separate cluster of jurisdictions — Vietnam, Turkey, Oman, China, Russia, and Thailand — has continued or expanded hosting; non-state armed actors and additional destination states appear in the carrier’s reported operational record; and a set of dependent parties — passengers, service providers, competitors, insurers — carry the consequences of route and sanctions decisions without the standing to shape them. The founder’s stated view that compliance with state demands is a “patriotic obligation” and the analyst’s assessment that “sanctioning doesn’t mean that Mahan has been grounded but raises the cost to Tehran for continuing operating this airline” frame the divergence between an economic pressure campaign and a carrier that, as of the Aug. 30 Vietnam launch, lists regular service to 20 destinations.

Analytical techniques used in this piece

This analysis applies the methods below. Each links to a short, plain-English explainer you can read and reuse.

Stakeholder Mapping: Charts the parties to a situation — their interests, power, and alignments.
Principal–Agent Problem: An agent acting for a principal has its own interests, which can quietly diverge.