Cheap Flights from Dayton (DAY) to Sion (SIR)

Popular airlines from Dayton Intl. Airport (DAY) to Sion (SIR)

Frequently asked questions

How much does a flight from James M. Cox Dayton Intl. Airport (DAY) to Sion Airport (SIR) cost?
Secure a cheap one-way flight or cheap return flight from James M. Cox Dayton Intl. Airport (DAY) to Sion Airport (SIR) 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 James M. Cox Dayton Intl. Airport (DAY) to Sion Airport (SIR)?
Traveling in can help you save, as it's the cheapest month for flights between DAY and SIR. You'll typically find the lowest fares during the off-season.
What is the cheapest airline that flies from James M. Cox Dayton Intl. Airport (DAY) to Sion Airport (SIR)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll fly you from DAY to SIR. Then, sort your results by "Price (lowest to highest)" to snap up a good deal.
How many flights per day from James M. Cox Dayton Intl. Airport (DAY) to Sion Airport (SIR)?
Direct flights from James M. Cox Dayton Intl. Airport (DAY) to Sion Airport (SIR) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from DAY to SIR?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change depending on a range of factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from James M. Cox Dayton Intl. Airport (DAY) to Sion Airport (SIR)?
To avoid potential delays on the James M. Cox Dayton Intl. Airport (DAY) to Sion Airport (SIR) route, aim to travel before 3 PM. Flights after this time have a 22% higher chance of cancellation.**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 James M. Cox Dayton Intl. Airport (DAY) to Sion Airport (SIR) last-minute?
Last-minute fares from DAY to SIR are generally more expensive. For the cheapest rates, start searching for flights as soon as possible. That said, if you're flexible with your travel plans, you may score a cheap ticket right before you leave.
Is it cheaper to book a DAY to SIR flight and hotel package?
Opting for a DAY to SIR flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Pick from our extensive range of stays and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from James M. Cox Dayton Intl. Airport (DAY) to Sion Airport (SIR)?
Typically, you can reschedule or cancel your DAY to SIR flight. However, additional charges may apply, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you'd like further information, go to our Customer Service portal.

Travel information

Origin airport
James M. Cox Dayton Intl.
Destination airport
Sion
Distance
4376 mi

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Dayton to Sion Flights

The cheapest times to fly from Dayton to Sion

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 Dayton to Sion are during the month of . You can find some of the cheapest flights from Dayton to Sion with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Dayton to Sion

Sunday is one of the best days to book for cheap flights from Dayton to Sion: 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 Dayton to Sion

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 Dayton to Sion 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 Dayton to Sion 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 Dayton to Sion 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.

 

Dayton to Sion Flights

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*Available to One Key members.