Whether you can fly depends on your health, your destination's entry rules, and your airline's current policies

If you are asking whether it is safe or allowed to fly today, the answer depends on three separate things: your own health status, what the destination country or state requires, and whether your airline is operating normally. There is no single "can I fly right now" rule that applies everywhere. This guide walks you through what to check before you book or head to the airport.

The most common reasons people cannot fly are illness (especially contagious illness), lack of required travel documents, or a ban imposed by their destination. Airlines will refuse boarding if you show symptoms of certain illnesses, if your passport is expired, or if you do not have a visa or entry permit the destination requires. Some destinations still have COVID-19 testing or vaccination requirements, though these have become less common. A few countries restrict entry based on your citizenship or recent travel history.

Key Takeaways

  • Airlines will not let you board if you have symptoms of contagious illness, so check your health and any fever before heading to the airport.
  • Your passport must be valid for at least six months beyond your return date in most countries, and some destinations require a visa you must obtain before arrival.
  • A few destinations still require proof of COVID-19 vaccination or a negative test result, though this is now rare; check your destination's official government website.
  • Your airline may have cancelled or significantly delayed flights due to weather, staffing, or mechanical issues, so confirm your flight status before leaving home.

Check your health and symptoms before the airport

Airlines have the right to refuse boarding to anyone showing signs of contagious illness. The most common reason is fever, cough, or difficulty breathing. If you have any of these symptoms, contact your airline before going to the airport—many will rebook you on a later flight at no charge if you are sick, or let you cancel without a fee.

If you have tested positive for COVID-19 in the past few days, most airlines will not let you board. The CDC recommends waiting at least five days after a positive test and until you have been fever-free for 24 hours without medication before flying. Some airlines are stricter than others, so call yours directly if you are unsure.

Verify your passport and visa requirements

Your passport must be valid for the entire length of your trip. Most countries require it to be valid for at least six months after your planned return date, even if you are only gone for a week. If your passport expires soon, you will not be allowed to board. Check the expiration date on the front cover before you leave home.

Many countries require a visa—a separate document or stamp—before you arrive. The United States, Canada, the United Kingdom, and most of Europe do not require visas from each other's citizens for short visits, but many other destinations do. Check the official government website of your destination country (not a travel agency site) to see what you need. If a visa is required and you do not have it, you cannot board your flight.

Look up your destination's current entry rules

A small number of countries still require proof of COVID-19 vaccination or a negative test taken within a certain number of hours before arrival. This is now uncommon, but it does happen. Go to your destination country's official health or immigration website—not a news site or travel blog—and search for "entry requirements" or "travel requirements." The official site will tell you exactly what documents you need.

Some destinations have restrictions based on your citizenship or where you have recently travelled. For example, a few countries restrict entry from certain nations or require additional screening if you have been in a specific region. Again, the official government website of your destination will list these rules clearly.

Confirm your flight is operating and on schedule

Before you head to the airport, check your airline's website or app to confirm your flight is not cancelled or significantly delayed. Weather, mechanical issues, and staffing shortages can ground flights with little notice. Most airlines send email or text alerts if your flight changes, but it is worth checking directly rather than assuming you received the notification.

If your flight is cancelled, your airline is required to rebook you on another flight at no charge or refund your ticket. If it is delayed by several hours, you may be may have access to to compensation depending on the airline and how long the delay is, though rules vary by country and airline.

What to do if you cannot fly right now

If you are sick, your airline will usually rebook you without a fee if you contact them before your flight. If your passport is expired or you lack a required visa, you cannot fly until you fix that—contact your country's passport office or your destination's embassy to see how long the process takes. If your destination has entry restrictions you cannot meet, you will need to either wait until the restriction lifts or choose a different destination.

If your flight is cancelled, contact your airline when ready. They are required to rebook you on the next available flight or refund your ticket. Some airlines offer hotel and meal vouchers if the cancellation strands you overnight, though this varies by airline and situation.

Frequently Asked Questions

Do I still need to show a negative COVID test to fly?

Most countries no longer require a COVID test to enter. A few destinations still do—check your destination country's official government website under "entry requirements" or "travel health." If a test is required, it is usually a rapid antigen test taken within 24 hours before arrival.

What if my passport expires in three months?

You cannot board an international flight if your passport expires within six months of your return date. Contact your country's passport office when ready. Expedited renewal usually takes one to two weeks, though times vary by country and how busy the office is.

Can I fly if I have a cold?

A mild cold with no fever usually will not stop you from boarding. However, if you have a fever, cough, or difficulty breathing, the airline may refuse to let you on the plane. Call your airline before going to the airport if you are unsure whether your symptoms will be a problem.

What happens if I arrive at the airport and my flight is cancelled?

Your airline must rebook you on another flight at no charge or refund your ticket. If the cancellation leaves you stranded overnight, ask the airline about hotel and meal vouchers—policies vary. Keep all receipts if you pay out of pocket, as some airlines will reimburse you.

How do I know if my destination requires a visa?

Go to your destination country's official government website and search for "visa requirements" or "entry requirements." The official site will list exactly who needs a visa and how to obtain one. Do not rely on travel blogs or travel agency sites, as they are sometimes out of date.