Outbound | Return | Airlines | Shop | Baggage | Price | ||
---|---|---|---|---|---|---|---|
Denver Sidney | Outbound 10/18/25 1 Stopover (BIL) UA5272, 9K1781 24h 05min | Return 11/17/25 1 Stopover (BIL) 9K1776, UA0478 23h 03min | | ![]() | ? | $277 | |
Best option Denver Sidney | Outbound 09/04/25 1 Stopover (BIL) UA5272, 9K1785 05h 53min | Return 09/28/25 1 Stopover (BIL) 9K1776, UA5571 24h 52min | | ![]() | ? | $284 | |
Denver Sidney | Outbound 06/08/25 1 Stopover (BIL) UA1884, 9K1789 21h 08min | Return 06/29/25 1 Stopover (BIL) 9K1788, UA5829 16h 08min | | ![]() | ? | $312 | |
Denver Sidney | Outbound 06/07/25 1 Stopover (BIL) UA1884, 9K1789 21h 08min | Return 06/23/25 1 Stopover (BIL) 9K1776, UA4758 26h 27min | | ![]() | ? | $321 | |
Denver Sidney | Outbound 06/18/25 1 Stopover (BIL) UA1884, 9K1775 13h 17min | Return 07/15/25 1 Stopover (BIL) 9K1784, UA5829 17h 58min | | ![]() | ? | $349 | |
Denver Sidney | Outbound 06/18/25 1 Stopover (BIL) UA1884, 9K1775 13h 17min | Return 07/15/25 1 Stopover (BIL) 9K1776, UA5282 26h 27min | | ![]() | ? | $365 | |
Denver Sidney | Outbound 07/02/25 1 Stopover (BIL) UA1884, 9K1789 21h 19min | Return 07/25/25 1 Stopover (BIL) 9K1776, UA5829 13h 37min | | ![]() | ? | $435 | |
Denver Sidney | Outbound 06/08/25 1 Stopover (BIL) UA1884, 9K1775 13h 20min | Return 06/12/25 1 Stopover (BIL) 9K1778, UA0372 25h 07min | | ![]() | ? | $448 | |
Denver Sidney | Outbound 11/03/25 2 Stopovers (PHX, BIL) AA2447, AA3727, 9K1775 21h 17min | Return 11/12/25 2 Stopovers (BIL, PHX) 9K1784, AA3661, AA1997 26h 46min | | ![]() | ? | $483 | |
Denver Sidney | Outbound 11/03/25 2 Stopovers (SEA, BIL) AS0643, AS2084, 9K1789 09h 43min | Return 11/12/25 2 Stopovers (BIL, SEA) 9K1780, AS2084, AS0602 09h 34min | | ![]() | ? | $718 |
Airline
- Alaska Airlines
- United Airlines
- American Airlines
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 | $276.07 |
---|---|
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 Denver - Las Vegas from $86
- Flight Denver - San Francisco from $126
- Flight Denver - Miami from $111
- Flight Denver - New York from $164
- Flight Denver - Los Angeles from $126
- Flight Denver - Seattle-Tacoma from $148
- Flight Denver - Chicago from $102
- Flight Denver - New York from $210
- Flight Denver - Tampa from $163
- Flight Denver - Dallas from $126
Flight destinations with a similar price
- Flight Denver - Houston-Hobby from $253
- Flight Denver - Puerto Vallarta from $288