Cheap Flights from Dortmund (DTM) to Sidney (SDY)

Popular airlines from Dortmund (DTM) to Sidney, MT (SDY-Sidney-Richland Municipal)

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Flights from Dortmund (DTM) to Sidney (SDY)
Origin airport
Dortmund
Destination airport
Sidney-Richland Municipal
Distance
4486 mi

Dortmund to Sidney Flights

The cheapest times to fly from Dortmund to Sidney

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

 

The best time to book a flight from Dortmund to Sidney

Sunday is one of the best days to book for cheap flights from Dortmund to Sidney: 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 Dortmund to Sidney

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 Dortmund to Sidney in 2026. 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 Dortmund to Sidney 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 Dortmund to Sidney 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 Dortmund Airport (DTM) to Sidney-Richland Municipal Airport (SDY) cost?
Lock in a cheap one-way flight or cheap return flight from Dortmund Airport (DTM) to Sidney-Richland Municipal Airport (SDY) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Dortmund Airport (DTM) to Sidney-Richland Municipal Airport (SDY)?
is the cheapest month to fly from DTM to SDY. Traveling during quieter months is often the key to landing a great deal.
What is the cheapest airline that flies from Dortmund Airport (DTM) to Sidney-Richland Municipal Airport (SDY)?
To find the cheapest airline flying from DTM to SDY, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Dortmund Airport (DTM) to Sidney-Richland Municipal Airport (SDY)?
Nonstop flights from Dortmund Airport (DTM) to Sidney-Richland Municipal Airport (SDY) 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 DTM to SDY?
Typically you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can vary based on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Dortmund Airport (DTM) to Sidney-Richland Municipal Airport (SDY)?
To land at Sidney-Richland Municipal Airport (SDY) on schedule, opt for a flight that takes off from Dortmund Airport (DTM) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Dortmund Airport (DTM) to Sidney-Richland Municipal Airport (SDY) last-minute?
Booking your plane ticket from DTM to SDY shortly before your getaway is usually more expensive. But if you're flexible with your departure dates and times, you could land a cheap last-minute fare.
Is it cheaper to book a DTM to SDY flight and hotel package?
You'll generally save money by booking a DTM to SDY flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After selecting your ideal accommodations and flights, consider adding extras such as car rentals, tours and activities.
Can I cancel or change the date of my flight from Dortmund Airport (DTM) to Sidney-Richland Municipal Airport (SDY)?
Typically, you're able to cancel or reschedule your DTM to SDY flight. However, there may be additional fees, especially if you booked more than 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you want more information, head to our Customer Service portal.

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