Cheap Flights from Portsmouth (PSM) to Ostrava (OSR)

Popular airlines from Portsmouth, NH (PSM-Portsmouth Intl.) to Ostrava (OSR-Leos Janacek)

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Flights from Portsmouth (PSM) to Ostrava (OSR)
Origin airport
Portsmouth Intl.
Destination airport
Leos Janacek
Distance
4008 mi

Portsmouth to Ostrava Flights

The cheapest times to fly from Portsmouth to Ostrava

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Portsmouth to Ostrava are during the month of . You can find some of the cheapest flights from Portsmouth to Ostrava with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Portsmouth to Ostrava

Sunday is one of the best days to book for cheap flights from Portsmouth to Ostrava: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Portsmouth to Ostrava

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Portsmouth to Ostrava in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Portsmouth to Ostrava flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Portsmouth to Ostrava airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Portsmouth Intl. Airport (PSM) to Leos Janacek Airport (OSR) cost?
Secure a cheap one-way flight or cheap return flight from Portsmouth Intl. Airport (PSM) to Leos Janacek Airport (OSR) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Portsmouth Intl. Airport (PSM) to Leos Janacek Airport (OSR)?
The cheapest month to fly from PSM to OSR is , when demand is low. Off-peak months are often when airlines offer better prices between these airports.
What is the cheapest airline that flies from Portsmouth Intl. Airport (PSM) to Leos Janacek Airport (OSR)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest PSM to OSR flight.
How many flights per day from Portsmouth Intl. Airport (PSM) to Leos Janacek Airport (OSR)?
Nonstop flights from Portsmouth Intl. Airport (PSM) to Leos Janacek Airport (OSR) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PSM to OSR?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary based on a number of factors, including the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Portsmouth Intl. Airport (PSM) to Leos Janacek Airport (OSR)?
To avoid potential delays on the Portsmouth Intl. Airport (PSM) to Leos Janacek Airport (OSR) route, aim to fly before 3 PM. Later flights are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Portsmouth Intl. Airport (PSM) to Leos Janacek Airport (OSR) last-minute?
Booking your ticket from PSM to OSR shortly before your getaway is usually more expensive. However, if there's some wiggle room with your schedule, you could land a cheap last-minute fare.
Is it cheaper to book a PSM to OSR flight and hotel package?
Compared with arranging flights and hotels separately, booking a PSM to OSR flight and hotel package with Expedia could result in significant savings. What's more, having everything in one place will take the stress out of planning your trip. Just pick your flights and select from our wide range of hotels, then personalize your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from Portsmouth Intl. Airport (PSM) to Leos Janacek Airport (OSR)?
In most instances, you can cancel or reschedule your PSM to OSR flight. However, there may be additional fees, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you'd like more information, head to our Customer Service portal.

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