SEATTLE, WA - JUNE 27: Boeing 737 MAX airplanes are stored on employee parking lots near Boeing Field, on June 27, 2019 in Seattle, Washington. After a pair of crashes, the 737 MAX has been grounded by the FAA and other aviation agencies since March, 13, 2019. The FAA has reportedly found a new potential flaw in the Boeing 737 Max software update that was designed to improve safety. (Photo by Stephen Brashear/Getty Images)
Stephen Brashear/Getty Images North America/Getty Images
SEATTLE, WA - JUNE 27: Boeing 737 MAX airplanes are stored on employee parking lots near Boeing Field, on June 27, 2019 in Seattle, Washington. After a pair of crashes, the 737 MAX has been grounded by the FAA and other aviation agencies since March, 13, 2019. The FAA has reportedly found a new potential flaw in the Boeing 737 Max software update that was designed to improve safety. (Photo by Stephen Brashear/Getty Images)
Now playing
01:06
Boeing to take nearly $5 billion charge for 737 Max woes
marte fotos volcan olympus mons sistema solar hope ultravioleta perspectivas mexico_00000411.png
marte fotos volcan olympus mons sistema solar hope ultravioleta perspectivas mexico_00000411.png
Now playing
04:12
Why we are going to Mars
Twitter | @brady9dream
Now playing
02:10
Pet owners pitch their pups to be dog brew's 'Chief Tasting Officer'
Now playing
01:32
Scientists turned spiderwebs into music and it sounds like a nightmare
LONDON, ENGLAND - DECEMBER 07:  A visual representation of the digital Cryptocurrency, Bitcoin on December 07, 2017 in London, England. Cryptocurrencies including Bitcoin, Ethereum, and Lightcoin have seen unprecedented growth in 2017, despite remaining extremely volatile. While digital currencies across the board have divided opinion between financial institutions, and now have a market cap of around 175 Billion USD, the crypto sector coninues to grow, as it continues to see wider mainstreem adoption. The price of one Bitcoin passed 15,000 USD across many exchanges today taking it higher than previous all time highs.  (Photo by Dan Kitwood/Getty Images)
Dan Kitwood/Getty Images
LONDON, ENGLAND - DECEMBER 07: A visual representation of the digital Cryptocurrency, Bitcoin on December 07, 2017 in London, England. Cryptocurrencies including Bitcoin, Ethereum, and Lightcoin have seen unprecedented growth in 2017, despite remaining extremely volatile. While digital currencies across the board have divided opinion between financial institutions, and now have a market cap of around 175 Billion USD, the crypto sector coninues to grow, as it continues to see wider mainstreem adoption. The price of one Bitcoin passed 15,000 USD across many exchanges today taking it higher than previous all time highs. (Photo by Dan Kitwood/Getty Images)
Now playing
03:07
Bitcoin has an energy problem
Accused $50 billion Ponzi scheme swindler Bernard Madoff exits federal court March 10, 2009 in New York City. Madoff was attending a hearing on his legal representation and is due back in court Thursday.  (Photo by Mario Tama/Getty Images)
Mario Tama/Getty Images
Accused $50 billion Ponzi scheme swindler Bernard Madoff exits federal court March 10, 2009 in New York City. Madoff was attending a hearing on his legal representation and is due back in court Thursday. (Photo by Mario Tama/Getty Images)
Now playing
03:11
Bernie Madoff, infamous Ponzi schemer, dead at 82
Now playing
05:18
Coinbase CFO: We're an on-ramp to the crypto economy
A man checks vine buds during the burning of anti-frost candles in the Luneau-Papin wine vineyard in Le Landreau, near Nantes, western France, on April 12, 2021, as temperatures fall below zero degrees celsius.
Sebastien Salom-Gomis/AFP/Getty Images
A man checks vine buds during the burning of anti-frost candles in the Luneau-Papin wine vineyard in Le Landreau, near Nantes, western France, on April 12, 2021, as temperatures fall below zero degrees celsius.
Now playing
01:37
See how French winemakers are trying to save their crops from frost
SUEZ, EGYPT - MARCH 29: The container ship 'Ever Given' is refloated, unblocking the Suez Canal on March 29, 2021 in Suez, Egypt. This morning the container ship came partly unstuck from the shoreline, where it ran aground in the canal last Tuesday, and later resumed its course shortly after 3pm local time. The Suez Canal is one of the world's busiest shipping lanes and the blockage had created a backlog of vessels at either end, raising concerns over the impact on global shipping and supply chains. (Photo by Mahmoud Khaled/Getty Images)
Mahmoud Khaled/Getty Images
SUEZ, EGYPT - MARCH 29: The container ship 'Ever Given' is refloated, unblocking the Suez Canal on March 29, 2021 in Suez, Egypt. This morning the container ship came partly unstuck from the shoreline, where it ran aground in the canal last Tuesday, and later resumed its course shortly after 3pm local time. The Suez Canal is one of the world's busiest shipping lanes and the blockage had created a backlog of vessels at either end, raising concerns over the impact on global shipping and supply chains. (Photo by Mahmoud Khaled/Getty Images)
Now playing
00:57
Egypt seizes Ever Given ship, asks for $900M in compensation
CNN
Now playing
03:06
Hear doctor's message for people with J&J vaccine concerns
Barbers from King's Cutz give haircuts indoors while observing COVID-19 safety restrictions on March 13, 2021 in Los Angeles, California.
Mario Tama/Getty Images
Barbers from King's Cutz give haircuts indoors while observing COVID-19 safety restrictions on March 13, 2021 in Los Angeles, California.
Now playing
01:43
US consumer prices increased in March
Now playing
03:21
Teachers under pandemic stress are quitting: I didn't feel safe
Domino's autonomous vehicle will deliver your pizza
Domino's
Domino's autonomous vehicle will deliver your pizza
Now playing
01:12
Watch this robot deliver a Domino's pizza
Now playing
01:27
See the first community of 3D-printed homes
Now playing
04:22
Levi's CEO has message for Mitch McConnell
Elon Musk's Neuralink says this monkey is playing Pong with its mind
From Neuralink/Youtube
Elon Musk's Neuralink says this monkey is playing Pong with its mind
Now playing
01:41
Elon Musk's company says this monkey is playing Pong with his mind
(CNN Business) —  

Ryanair pilots in the United Kingdom have voted to strike over pay and working conditions, putting summer travel plans at risk for customers of the low-cost airline.

The British Airline Pilots Association (BALPA) announced late Wednesday that 80% of its members who took part in a ballot had supported the industrial action after negotiations with Ryanair reached an impasse.

The pilots are scheduled to strike for two days starting August 22, and again from September 2 to September 4.

“Ryanair management cannot understand how to go about working with us constructively,” the union said in a statement. “No pilot wants to spoil the public’s travel plans but at the moment it seems we have no choice.”

Europe’s biggest low-cost airline first recognized unions in December 2017, but it has been slow to reach agreements with its workers in some key markets.

Ryanair (RYAAY) called for talks to resume. It said less than half of its UK pilots are members of the union.

“BALPA have no mandate to disrupt our customers holidays and flights, particularly at a time when UK pilots are facing job losses due to the Boeing MAX delivery delays, and the threat of a no deal Brexit,” the airline said in a statement.

The Irish carrier said last month that it was planning to cut back operations at some airports in Europe and abandon others entirely because regulators may not return the grounded 737 Max to service until December.

Ryanair had planned its flight schedule based on the delivery of 58 of the 737 Max aircraft by summer 2020. The airline, which can take delivery of up to eight aircraft per month, now expects to receive only 30.

The company slashed its expected passenger growth rate for next summer from 7% to 3% as a result of the delay. That means it will fly 5 million fewer passengers than expected in the year to March 2021.

Its 2019 performance could be further compromised if Britain crashes out of the European Union on October 31 without a deal to protect trade.

Analysts at Bernstein Research said they expected the Ryanair pilot strike to go ahead, and suggested the move could encourage unions in other countries to take similar action.

Shares in Ryanair were little changed on Thursday.

British Airways pilots voted last month to strike for the first time since the 1970s. BALPA has said it’s committed to finding a negotiated solution to that dispute, and strike dates have not yet been set.