$861 Cheap Flights from Kalispell (FCA) to Sidney (SDY)

View $861 flight on Fri, Mar 20, 2026Opens in a new window

Popular airlines from Glacier Park Intl. Airport (FCA) to Sidney, MT (SDY-Sidney-Richland Municipal)

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Cheap Flights from Kalispell to Sidney (FCA-SDY)

Prices were available within the past 7 days and start at $861 for one-way flights and $550 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Apr 18 - Tue, May 5
FCA
Kalispell
SDY
Sidney
$550 Roundtrip, found 2 days ago
$550
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sat, Apr 18 from Kalispell to Sidney, returning Tue, May 5, priced at $550 found 2 days ago
Hawaiian Airlines
Thu, Apr 9 - Tue, Apr 14
FCA
Kalispell
SDY
Sidney
$570 Roundtrip, found 2 days ago
$570
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Thu, Apr 9 from Kalispell to Sidney, returning Tue, Apr 14, priced at $570 found 2 days ago
Alaska Airlines
Tue, Apr 7 - Tue, Apr 14
FCA
Kalispell
SDY
Sidney
$580 Roundtrip, found 2 days ago
$580
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Apr 7 from Kalispell to Sidney, returning Tue, Apr 14, priced at $580 found 2 days ago
Alaska Airlines
Sat, Apr 11 - Tue, Apr 14
FCA
Kalispell
SDY
Sidney
$590 Roundtrip, found 2 days ago
$590
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sat, Apr 11 from Kalispell to Sidney, returning Tue, Apr 14, priced at $590 found 2 days ago
Alaska Airlines
Tue, Apr 7 - Sun, Apr 19
FCA
Kalispell
SDY
Sidney
$600 Roundtrip, found 2 days ago
$600
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Apr 7 from Kalispell to Sidney, returning Sun, Apr 19, priced at $600 found 2 days ago
Alaska Airlines
Thu, Apr 16 - Tue, May 5
FCA
Kalispell
SDY
Sidney
$605 Roundtrip, found 2 days ago
$605
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Thu, Apr 16 from Kalispell to Sidney, returning Tue, May 5, priced at $605 found 2 days ago
Alaska Airlines
Thu, Apr 9 - Wed, Apr 22
FCA
Kalispell
SDY
Sidney
$610 Roundtrip, found 2 days ago
$610
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Thu, Apr 9 from Kalispell to Sidney, returning Wed, Apr 22, priced at $610 found 2 days ago
Hawaiian Airlines
Tue, Mar 31 - Tue, Apr 14
FCA
Kalispell
SDY
Sidney
$610 Roundtrip, found 2 days ago
$610
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Tue, Mar 31 from Kalispell to Sidney, returning Tue, Apr 14, priced at $610 found 2 days ago
Hawaiian Airlines
Sun, Apr 12 - Sat, Apr 18
FCA
Kalispell
SDY
Sidney
$615 Roundtrip, found 2 days ago
$615
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Sun, Apr 12 from Kalispell to Sidney, returning Sat, Apr 18, priced at $615 found 2 days ago
Alaska Airlines
Tue, Apr 7 - Wed, Apr 22
FCA
Kalispell
SDY
Sidney
$620 Roundtrip, found 2 days ago
$620
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Apr 7 from Kalispell to Sidney, returning Wed, Apr 22, priced at $620 found 2 days ago
United
Thu, Apr 9 - Sat, Apr 11
FCA
Kalispell
SDY
Sidney
$624 Roundtrip, found 2 days ago
$624
Roundtrip
found 2 days ago
Select United flight, departing Thu, Apr 9 from Kalispell to Sidney, returning Sat, Apr 11, priced at $624 found 2 days ago
Alaska Airlines
Fri, Apr 10 - Thu, Apr 23
FCA
Kalispell
SDY
Sidney
$625 Roundtrip, found 2 days ago
$625
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Fri, Apr 10 from Kalispell to Sidney, returning Thu, Apr 23, priced at $625 found 2 days ago
Alaska Airlines
Sat, Apr 11 - Wed, Apr 22
FCA
Kalispell
SDY
Sidney
$630 Roundtrip, found 2 days ago
$630
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sat, Apr 11 from Kalispell to Sidney, returning Wed, Apr 22, priced at $630 found 2 days ago
Alaska Airlines
Fri, Apr 10 - Sun, Apr 26
FCA
Kalispell
SDY
Sidney
$630 Roundtrip, found 2 days ago
$630
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Fri, Apr 10 from Kalispell to Sidney, returning Sun, Apr 26, priced at $630 found 2 days ago
Delta
Sun, Apr 5 - Sat, Apr 11
FCA
Kalispell
SDY
Sidney
$634 Roundtrip, found 2 days ago
$634
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Apr 5 from Kalispell to Sidney, returning Sat, Apr 11, priced at $634 found 2 days ago
Alaska Airlines
Tue, Apr 7 - Sun, Apr 26
FCA
Kalispell
SDY
Sidney
$640 Roundtrip, found 2 days ago
$640
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Apr 7 from Kalispell to Sidney, returning Sun, Apr 26, priced at $640 found 2 days ago
United
Thu, Jun 4 - Sat, Jun 13
FCA
Kalispell
SDY
Sidney
$644 Roundtrip, found 2 days ago
$644
Roundtrip
found 2 days ago
Select United flight, departing Thu, Jun 4 from Kalispell to Sidney, returning Sat, Jun 13, priced at $644 found 2 days ago

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Frequently asked questions

How much does a flight from Glacier Park Intl. Airport (FCA) to Sidney-Richland Municipal Airport (SDY) cost?
Lock in a cheap one-way flight from $861 or cheap return flight from $550 from Glacier Park Intl. Airport (FCA) to Sidney-Richland Municipal Airport (SDY) 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 Glacier Park Intl. Airport (FCA) to Sidney-Richland Municipal Airport (SDY)?
Traveling in April is a great way to save, as it's the cheapest month for flights between FCA and SDY. You'll typically find the lowest prices during off-peak months.
What is the cheapest airline that flies from Glacier Park Intl. Airport (FCA) to Sidney-Richland Municipal Airport (SDY)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll fly you from FCA to SDY. Then, sort your results by "Price (lowest to highest)" to snag the best deal available.
How many flights per day from Glacier Park Intl. Airport (FCA) to Sidney-Richland Municipal Airport (SDY)?
There aren't any daily direct flights available from Glacier Park Intl. Airport (FCA) to Sidney-Richland Municipal Airport (SDY). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from FCA to SDY?
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 Glacier Park Intl. Airport (FCA) to Sidney-Richland Municipal Airport (SDY)?
To land at Sidney-Richland Municipal Airport (SDY) on time, select a flight that leaves from Glacier Park Intl. Airport (FCA) before 3 PM. The chance 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 Glacier Park Intl. Airport (FCA) to Sidney-Richland Municipal Airport (SDY) last-minute?
Last-minute fares from FCA to SDY are typically more expensive. To secure the cheapest rates, start searching for flights as early as possible. That said, if you can play around with your travel dates, you may land a cheap fare just before your departure.
Is it cheaper to book a FCA to SDY flight and hotel package?
Compared with arranging flights and hotels separately, booking a FCA to SDY flight and hotel package with Expedia could result in significant savings. What's more, having everything in one convenient place will take the hassle out of planning your trip. Just pick your flights and choose from our wide range of hotels, then personalize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Glacier Park Intl. Airport (FCA) to Sidney-Richland Municipal Airport (SDY)?
If you booked your FCA to SDY flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of ticket you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.

Travel information

Origin airport
Glacier Park Intl.
Destination airport
Sidney-Richland Municipal
Roundtrip price
$549
Distance
466 mi

Book with confidence

Kalispell to Sidney Flights

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

 

The best time to book a flight from Kalispell to Sidney

Sunday is one of the best days to book for cheap flights from Kalispell 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 Kalispell 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 Kalispell to Sidney in 2026. You can also book with separate airlines for your outbound and return journeys, from $861 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 Kalispell 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 Kalispell 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.

 

Kalispell to Sidney Flights

*Flight schedules are subject to change.

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*Available to One Key members.