Aeroflot's ties with Delta are severed due to the fallout from Russia's invasion of Ukraine in air travel.

• Delta said the decision is effective immediately.
• Delta's pact with Russia's largest airline enabled customers to reserve seats on both carriers' flights.
• The move comes after the U.K. banned Aeroflot from flying into the country.

As the fallout from Russia's invasion of Ukraine continues to spread, Aeroflot, a Russian carrier, has been suspended by said Friday.

Their partnership allows customers to book seats on each other’s flights.

Delta has discontinued its codeshare agreement with Aeroflot, effective immediately. This means that Delta has removed its code from Aeroflot-operated services beyond Moscow's Sheremetyevo Airport and removed Aeroflot's code from Delta-operated services from Los Angeles and New York-JFK. Delta will make accommodations for customers affected by these changes.

On Thursday, the U.K. prohibited state-owned Aeroflot from entering its airspace, prompting Russia to retaliate by closing its airspace to British airlines. The U.S. Transportation Department has not yet stated whether it will follow suit. Despite this, Aeroflot is still scheduled to fly from Moscow to New York on Saturday, and has 56 scheduled flights between the U.S. and Russia in March, according to aviation data from Cirium.

Due to the conflict in Ukraine, British airlines and other carriers have been required to cancel flights or alter flight paths around Russia. Prior to Russia's invasion, Ukraine closed its airspace, prompting European aviation officials to advise airlines to avoid flying over the country or certain areas of western Russia.

Delta partner KLM Royal Dutch Airlines announced on Friday that it has canceled certain flights to Russia.

Due to the uncertain situation, we have decided not to permit our crew to remain in Russia overnight. As a result, we have cancelled the night flight to Moscow since it is not feasible to carry it out.

Airlines previously canceled Ukraine service.

Delta does not fly to Russia or Ukraine.

The SkyTeam airline alliance has stated that it is closely monitoring events in Ukraine and is in touch with its members to evaluate the situation as it unfolds.

Neither the U.S. Department of Transportation nor Aeroflot provided a comment when requested.

Through codeshare agreements, airlines can offer seats on flights to destinations they don't serve, thereby expanding their international reach to customers.