Billings (BIL) to Denver (DEN) flights
One airline flies nonstop from Billings (BIL) to Denver (DEN): United Airlines. The two airports are 455 miles (733 km) apart. United Airlines is in Star Alliance. There are also 2 ways to fly it with one stop, through Salt Lake City and Las Vegas.
Airlines flying nonstop from BIL to DEN
- United AirlinesStar Alliance · bookable with 13 programsWho books it
Book BIL to DEN with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Air Canada AeroplanBooks United Airlines
- Air New Zealand AirpointsBooks United Airlines
- ANA Mileage ClubBooks United Airlines
- Avianca LifeMilesBooks United Airlines
- Emirates SkywardsBooks United Airlines
- EVA Air Infinity MileageLandsBooks United Airlines
- JetBlue TrueBlueBooks United Airlines
- Lufthansa Miles & MoreBooks United Airlines
- Singapore Airlines KrisFlyerBooks United Airlines
- TAP Miles&GoBooks United Airlines
- Thai Royal Orchid PlusBooks United Airlines
- Turkish Airlines Miles&SmilesBooks United Airlines
- United MileagePlusBooks United Airlines
BIL to DEN with one stop
2 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Salt Lake City (SLC)Delta Air Lines the whole way
+1 - Via Las Vegas (LAS)Allegiant Air, then Frontier Airlines, United Airlines and 1 more
BIL to DEN: common questions
Which airlines fly nonstop from BIL to DEN?
United Airlines (Star Alliance) flies nonstop from Billings (BIL) to Denver (DEN).
How far is Billings from Denver by plane?
Billings (BIL) and Denver (DEN) are 455 miles (733 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book BIL to DEN award flights?
13 programs can book at least one of the nonstop airlines: Air Canada Aeroplan, Air New Zealand Airpoints, ANA Mileage Club, Avianca LifeMiles, Emirates Skywards, EVA Air Infinity MileageLands, JetBlue TrueBlue, Lufthansa Miles & More and 5 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does BIL to DEN cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for BIL to DEN with taxes and fees.
Where can I connect between Billings and Denver?
The most direct connections are through Salt Lake City (SLC) and Las Vegas (LAS). On 1 of them the same airline flies both flights, for example Delta Air Lines through Salt Lake City.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.