Flights from Denver to Sidney with Alaska Airlines

Our cheapest offers for flights from Denver to Sidney

Here you can compare cheap flights from Denver (DEN) to Sidney (SDY) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Sidney. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Denver
Sidney
Outbound
09/25/25
2 Stopovers (SEA, BIL)
AS0735, AS2195, 9K1785
11h 51min
Return
10/05/25
2 Stopovers (BIL, SEA)
9K1780, AS2084, AS1163
12h 14min
Alaska Airlines, Cape Air ?
$1,361
Prices based on recent searches, subject to last-minute changes
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Important flight information

Flight information: Denver - Sidney

Roundtrip from 314,00 $
Distance 874 km
Departure airport Airport Denver International Airport, CO (DEN)
Arrival airport Airport Sidney-Richland, MT (SDY)
Destination country Flights to United States
Alternative routes to United States
Flight destinations with a similar price