"I don't think we'll open up many new lines in the UK for the next twelve or eighteen months, until this current uncertainty is removed," chief executive Michael O'Leary told AFP in Brussels.
Ryanair earns more than a quarter of its sales in Britain and is particularly at risk to turbulence from the shock vote.
O'Leary said the entirety of an upcoming delivery of 50 Boeing aircraft would be used for routes outside Britain.
O'Leary said he hoped Britain would remain in the European single market despite the shock vote on Thursday.
"That has delivered enormous benefits for not just UK citizens but for European citizens," he said.
"But it's a matter for the UK government, whenever that government emerges," he said.
Since the June 23 referendum, British Airways owner IAG and British no-frills airline EasyJet have issued profit-warnings, as the pound dives against the euro on financial markets.
Based in eurozone-member Ireland, Ryanair would remain unaffected by the tumbling pound.
"If sterling is weaker, it means we're getting paid less. But you know, Ryanair always does well when prices are falling and fares are getting cheaper," O'Leary said.
"More people fly and they fly Ryanair," he added.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
