Flights from Billings to Denver

Our cheapest offers for flights from Billings to Denver

Here you can compare cheap flights from Billings (BIL) to Denver (DEN) 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 Denver. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Best option
Billings
Denver
Outbound
10/09/25
direct
UA5829
01h 51min
Return
11/05/25
direct
UA1417
01h 36min
United Airlines ?
$237
Billings
Denver
Outbound
02/13/26
1 Stopover (SLC)
DL1360, DL0681
04h 07min
Return
02/26/26
1 Stopover (SLC)
DL2544, DL4038
05h 38min
Delta Air Lines ?
$237
Billings
Denver
Outbound
10/25/25
direct
UA0372
01h 43min
Return
11/15/25
direct
UA1877
01h 33min
United Airlines ?
$248
Billings
Denver
Outbound
10/25/25
direct
UA0478
01h 42min
Return
11/15/25
direct
UA1877
01h 33min
United Airlines ?
$255
Billings
Denver
Outbound
10/09/25
direct
UA5829
01h 51min
Return
11/05/25
direct
UA5339
01h 46min
United Airlines
$259
Billings
Denver
Outbound
10/25/25
direct
UA4758
01h 49min
Return
11/15/25
1 Stopover (SEA)
F91175, AS2457
14h 07min
United Airlines ?
$353
Billings
Denver
Outbound
10/09/25
direct
UA0372
01h 43min
Return
11/05/25
2 Stopovers (SAN, SEA)
F92817, AS0574, AS2457
12h 07min
United Airlines ?
$364
Billings
Denver
Outbound
10/09/25
1 Stopover (SEA)
AS2208, AS1163
26h 31min
Return
11/05/25
1 Stopover (SEA)
AS0643, AS2457
17h 07min
Alaska Airlines ?
$465
Billings
Denver
Outbound
02/13/26
1 Stopover (LAS)
G40025, F92016
26h 51min
Return
02/26/26
2 Stopovers (SAN, LAS)
AS1428, AS3427, G41639
14h 02min
Allegiant Air, Frontier Airlines ?
$475
Billings
Denver
Outbound
10/25/25
1 Stopover (SEA)
HA4778, HA6649
08h 06min
Return
11/15/25
1 Stopover (SEA)
HA4868, HA6325
08h 00min
Hawaiian Airlines ?
$555
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from Billings to Denver

Favorite airline: United Airlines
The favorite airline for flights from Billings to Denver is United Airlines.
United Airlines
50 %
Alaska Airlines
25 %
Delta
25 %
Direct flights are the cheapest connection
Compared to flights with a stopover, direct flights are $35.00 cheaper on this route.
non stop flight
1 stop
01h 53min
06h 17min
$302
$337
The favorite connection is non-stop
67 % of travelers decide to book a direct flight on this route.
Route
bookings
Direct flights
01h 53min, from $302
67 %
1 stopover Salt Lake City International Airport, UT
06h 17min, from $337
33 %

Important flight information

Flight information: Billings - Denver

Roundtrip from $236.46
Flight duration min. 01:31 / max. 01:56
Return flight duration min. 01:31/ max. 01:49
Distance 733 km
Flights per week 31
Departure airport Airport Billings, MT (BIL)
Arrival airport Airport Denver International Airport, CO (DEN)
Destination country Flights to United States
Alternative flights to Denver
Flight destinations with a similar price