$243 Cheap Flights from Dallas (DFW) to Sidney (SDY)

View $243 flight on Thu, Nov 20, 2025Opens in a new window

Popular airlines from Dallas-Fort Worth Intl. Airport (DFW) to Sidney, MT (SDY-Sidney-Richland Municipal)

Cheap Flights from Dallas to Sidney (DFW-SDY)

Prices were available within the past 7 days and start at $243 for one-way flights and $485 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Thu, Nov 20 - Fri, Dec 5
DFW
Dallas
SDY
Sidney
$485 Roundtrip, found 4 days ago
$485
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Thu, Nov 20 from Dallas to Sidney, returning Fri, Dec 5, priced at $485 found 4 days ago
Alaska Airlines
Wed, May 6 - Wed, May 13
DFW
Dallas
SDY
Sidney
$527 Roundtrip, found 5 days ago
$527
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Wed, May 6 from Dallas to Sidney, returning Wed, May 13, priced at $527 found 5 days ago
Alaska Airlines
Fri, Nov 21 - Fri, Dec 5
DFW
Dallas
SDY
Sidney
$532 Roundtrip, found 4 days ago
$532
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Fri, Nov 21 from Dallas to Sidney, returning Fri, Dec 5, priced at $532 found 4 days ago
United
Tue, Nov 25 - Tue, Dec 9
DFW
Dallas
SDY
Sidney
$540 Roundtrip, found 4 days ago
$540
Roundtrip
found 4 days ago
Select United flight, departing Tue, Nov 25 from Dallas to Sidney, returning Tue, Dec 9, priced at $540 found 4 days ago
Hawaiian Airlines
Tue, Nov 4 - Mon, Nov 17
DFW
Dallas
SDY
Sidney
$541 Roundtrip, found 4 days ago
$541
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Tue, Nov 4 from Dallas to Sidney, returning Mon, Nov 17, priced at $541 found 4 days ago
Hawaiian Airlines
Wed, Dec 3 - Mon, Dec 15
DFW
Dallas
SDY
Sidney
$542 Roundtrip, found 4 days ago
$542
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Wed, Dec 3 from Dallas to Sidney, returning Mon, Dec 15, priced at $542 found 4 days ago
Hawaiian Airlines
Thu, Nov 20 - Wed, Dec 3
DFW
Dallas
SDY
Sidney
$547 Roundtrip, found 4 days ago
$547
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Thu, Nov 20 from Dallas to Sidney, returning Wed, Dec 3, priced at $547 found 4 days ago
American Airlines
Wed, May 6 - Wed, May 13
DFW
Dallas
SDY
Sidney
$553 Roundtrip, found 5 days ago
$553
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, May 6 from Dallas to Sidney, returning Wed, May 13, priced at $553 found 5 days ago
Alaska Airlines
Thu, Nov 20 - Tue, Dec 2
DFW
Dallas
SDY
Sidney
$566 Roundtrip, found 4 days ago
$566
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Thu, Nov 20 from Dallas to Sidney, returning Tue, Dec 2, priced at $566 found 4 days ago
Delta
Tue, Dec 9 - Tue, Dec 23
DFW
Dallas
SDY
Sidney
$603 Roundtrip, found 4 days ago
$603
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Dec 9 from Dallas to Sidney, returning Tue, Dec 23, priced at $603 found 4 days ago

Alternative airports near Sidney

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Sidney-Richland Municipal SDY. Cheapest and Closest option available. Average driving time to city center is 3 minutes. Flights from $576
SDY
Sidney-Richland Municipal
CheapestClosest
Average driving time to city center3 min
Flights from $576

Frequently asked questions

How much does a flight from Dallas-Fort Worth Intl. Airport (DFW) to Sidney-Richland Municipal Airport (SDY) cost?
Grab a cheap one-way flight from $243 or cheap return flight from $485 from Dallas-Fort Worth Intl. Airport (DFW) to Sidney-Richland Municipal Airport (SDY) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Dallas-Fort Worth Intl. Airport (DFW) to Sidney-Richland Municipal Airport (SDY)?
Flying in November is a good way to save, as it's the cheapest month for flights between DFW and SDY. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Dallas-Fort Worth Intl. Airport (DFW) to Sidney-Richland Municipal Airport (SDY)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest DFW to SDY flight.
How many flights per day from Dallas-Fort Worth Intl. Airport (DFW) to Sidney-Richland Municipal Airport (SDY)?
You'll have to hop on a flight with a layover when traveling from Dallas-Fort Worth Intl. Airport (DFW) to Sidney-Richland Municipal Airport (SDY). There are no daily direct flights on this route. However, just filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from DFW to SDY?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can change depending on various factors, such as the time of year 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 Dallas-Fort Worth Intl. Airport (DFW) to Sidney-Richland Municipal Airport (SDY)?
Select a flight from Dallas-Fort Worth Intl. Airport (DFW) to Sidney-Richland Municipal Airport (SDY) that takes off before 3 PM to reduce the risk of cancellations and delays. Later departures have a 22% higher chance of being canceled, on average.**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 Dallas-Fort Worth Intl. Airport (DFW) to Sidney-Richland Municipal Airport (SDY) last-minute?
Waiting until right before your break to book your flight from DFW to SDY often results in higher prices. While you may find some last-minute deals, there's no guarantee. Be flexible with your travel plans for a better chance of getting a bargain.
Is it cheaper to book a DFW to SDY flight and hotel package?
Compared with arranging flights and hotels separately, booking a DFW to SDY flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one convenient place will take the stress out of travel planning. Just pick your flights and select from our extensive range of stays, then customize your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Dallas-Fort Worth Intl. Airport (DFW) to Sidney-Richland Municipal Airport (SDY)?
Typically, you can modify or cancel your DFW to SDY flight. However, additional charges may apply, 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 want further information, head to our Customer Service portal.

Travel information

Origin airport
Dallas-Fort Worth Intl.
Destination airport
Sidney-Richland Municipal
Roundtrip price
$485
Distance
1089 mi

Book with confidence

Dallas to Sidney Flights

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

 

The best time to book a flight from Dallas to Sidney

Sunday is one of the best days to book for cheap flights from Dallas 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 Dallas 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 Dallas to Sidney in 2025. You can also book with separate airlines for your outbound and return journeys, from $243 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 Dallas 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 Dallas 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.

 

Dallas to Sidney Flights

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*Available to One Key members.