Cheap Flights from Detroit (DTW) to Sion (SIR)

Popular airlines from Detroit Metropolitan Wayne County Airport (DTW) to Sion (SIR)

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Frequently asked questions

How much does a flight from Detroit Metropolitan Wayne County Airport (DTW) to Sion Airport (SIR) cost?
Get a cheap one-way flight or cheap return flight from Detroit Metropolitan Wayne County Airport (DTW) to Sion Airport (SIR) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Detroit Metropolitan Wayne County Airport (DTW) to Sion Airport (SIR)?
is the cheapest month to fly from DTW to SIR. Avoiding peak travel times is often the key to finding a great deal.
What is the cheapest airline that flies from Detroit Metropolitan Wayne County Airport (DTW) to Sion Airport (SIR)?
Expedia's filter tool lets you easily compare different airlines, departure times 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 DTW to SIR flight.
How many flights per day from Detroit Metropolitan Wayne County Airport (DTW) to Sion Airport (SIR)?
There are no daily nonstop flights departing from Detroit Metropolitan Wayne County Airport (DTW) to Sion Airport (SIR). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way in no time at all.
What day of the week has the most flights from DTW to SIR?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Detroit Metropolitan Wayne County Airport (DTW) to Sion Airport (SIR)?
To reach Sion Airport (SIR) on time, pick a flight that leaves from Detroit Metropolitan Wayne County Airport (DTW) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Detroit Metropolitan Wayne County Airport (DTW) to Sion Airport (SIR) last-minute?
Last-minute bookings from DTW to SIR are usually more expensive. To secure the best prices, start searching for flights ahead of time. That said, if your travel plans are flexible, you may find a cheap fare just before your departure.
Is it cheaper to book a DTW to SIR flight and hotel package?
Compared with arranging hotels and flights separately, booking a DTW to SIR flight and hotel package with Expedia could result in significant savings. Better still, having it all in one place will take the stress out of planning your trip. Simply secure your flights and select from our wide range of stays, then customize your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Detroit Metropolitan Wayne County Airport (DTW) to Sion Airport (SIR)?
In most cases, you're able to cancel or reschedule your DTW to SIR flight. However, additional fees may apply, especially if you booked over 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you need more details, go to our Customer Service portal.

Travel information

Origin airport
Detroit Metropolitan Wayne County
Destination airport
Sion
Distance
4240 mi

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Detroit to Sion Flights

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

 

The best time to book a flight from Detroit to Sion

Sunday is one of the best days to book for cheap flights from Detroit 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 Detroit 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 Detroit 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 Detroit 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 Detroit 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.

 

Detroit to Sion Flights

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*Available to One Key members.