Flights from Denver to Sidney

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
Best option
Denver
Sidney
Outbound
09/25/25
1 Stopover (BIL)
UA5339, 9K1777
04h 32min
Return
10/05/25
1 Stopover (BIL)
9K1784, UA0372
19h 51min
United Airlines, Cape Air ?
$314
Denver
Sidney
Outbound
11/09/25
1 Stopover (BIL)
UA1417, 9K1785
24h 09min
Return
12/07/25
1 Stopover (BIL)
9K1776, UA4758
26h 30min
United Airlines, Cape Air ?
$446
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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Tips and tricks to help you find cheap flights from Denver to Sidney

Favorite airline: Delta
The majority of passengers on the route Denver – Sidney prefer to fly with Delta.
Delta
50 %
Alaska Airlines
25 %
United Airlines
25 %
Favourite connection: via Salt Lake City and Billings
On this route, flights with a stopover in Salt Lake City and Billings are the most popular.
Route
bookings
2 stopovers Salt Lake City International Airport, UT Billings, MT
08h 10min, from 384 $
67 %
1 stopover Billings, MT
26h 13min, from 344 $
33 %

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