Cheapest€50.29
- Alpine Air Express AA142914:531h 9m16:02Kalispell FCABillings BIL
Door to door 4h 19mCO2 130.6 kgChanges 0Fixed, no changes
Kalispell to Billings flight
Flights from Kalispell to Billings start at €64.45 and take 4h 15m at their fastest.
The Flights from Kalispell to Billings starts at €64.45 and takes 4h 15m door to door, run by 1 operator over 531 km, with around 2 departures a day. Fares bottom out about 60 days before departure.
- 4h 15mDoor to door
- 1h 5mMoving
- €64.45From
- 130.6 kgCO2
The cheapest and the fastest on September 28, 2026
Two journeys we can sell today, with the service number each operator files them under.
Fastest€69.17
- Alpine Air Express AA694506:401h 5m07:45Kalispell FCABillings BIL
Door to door 4h 15mCO2 130.6 kgChanges 0Fixed, no changes
Airlines
Speed, flexibility and what is on board. Nothing here is a rating, because we have not earned one.
| Operator | From | Fastest | Typical speed | Flexibility | On board |
|---|---|---|---|---|---|
 Alpine Air Express | €50.29 | 4h 15m | 740 km/h | Fixed fare | Not published |
That is the traveling done. What happens after you walk out into Billings is not something we sell.
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When to book Kalispell to Billings
The same search run across the whole booking window, so the shape of the curve is visible rather than described.
- €80.3890 days
- €44.3960 days
- €55.6045 days
- €56.1930 days
- €62.6821 days
- €73.3014 days
- €70.947 days
- €72.123 days
- €108.701 days
- Cheapest lead time
- Fares bottom out around 60 days ahead, at €44.39.
- How much it moves
- The gap between the cheapest and most expensive lead time is 145 percent. The most expensive point is €108.70, 1 days out.
- What that means
- Today sits inside the cheap window, which closes about 60 days before departure. Waiting from here has usually cost money on this corridor rather than saved it.
Which departure day costs least
Median cheapest fare for each weekday, taken across the next three weeks of real prices.
- €71.53Sun
- €66.22Mon
- €64.45Tue
- €71.53Wed
- €89.82Thu
- €70.94Fri
- €75.07Sat
Where you leave from and where you arrive
The stations, airports and ports each mode on this corridor actually uses.
Kalispell
Air
- FCA
Billings
Air
- BIL
What the journey actually looks like
Direct or connecting, how far the route really runs, and what happens when a connection is missed.
- How far it really runs
- The route covers 531 km against 516 km in a straight line, a detour of 3 percent. Track and road geometry account for the difference.
- First and last departure
- The first service of the day leaves Kalispell at 06:40 and the last at 14:53, across 2 departures. The return direction keeps its own timetable, so the times back are not these times reversed.
Questions about Kalispell to Billings
The questions people actually ask about this trip, answered from the same prices and times the page above is built on rather than written once and left to go stale.
How long does the Flight from Kalispell to Billings take?
The Flight from Kalispell to Billings takes 4h 15m door to door, of which 1h 5m is spent moving. The route runs 531 km. The difference between the two times is reaching the terminal and leaving it at the far end, which every time on this page includes.
How much does the Flight from Kalispell to Billings cost?
The Flight from Kalispell to Billings starts at €64.45 for one passenger, checked on September 28, 2026. A typical fare is €59.73. Both are the total including taxes, supplier fees and our service fee, so the price here is the price at checkout.
Who runs the Flight from Kalispell to Billings?
1 operators run the Flight from Kalispell to Billings: Alpine Air Express. Between them they file around 2 departures a day. The operator table on this page compares them on fare, journey time, cruising speed, fare conditions and what is provided on board.
Which terminal does the Flight from Kalispell to Billings use?
The Flight from Kalispell to Billings leaves from Kalispell FCA and arrives at Billings BIL. Allow about 3h 10m for reaching the departure terminal and leaving the arrival one. That time is already inside every door to door figure quoted on this page.
When should I book the Flight from Kalispell to Billings?
Fares for the Flight from Kalispell to Billings bottom out around 60 days ahead, at €44.39. The gap between the cheapest and most expensive lead time across the window is 145 percent, measured on September 28, 2026. Booking inside the final week has consistently cost more.
How much CO2 does the Flight from Kalispell to Billings produce?
The Flight from Kalispell to Billings produces about 130.6 kg of CO2 per passenger over 531 km, which works out at roughly 246 grams per passenger kilometer. That figure is for the whole journey and for one traveler, not for the vehicle.
Where these numbers come from
Observed service A carrier record shows this named operator serving this named pair, and we carry that through unchanged.
Schedules, seat counts and fares are generated by our own model until the supplier contracts are signed. Places, coordinates, operators, which operator serves which pair, and every distance are real. We would rather say that on every page than let a modeled number pass for a filed one.
Defined in full at Door to door, Fares, The booking window, Carbon
- On this page
- Every figure above was computed for Kalispell to Billings on September 11, 2026: 531 km of route against 516 km in a straight line, 2 services a day, 1 operators, a cheapest fare of €64.45, and 4h 15m door to door on the fastest mode. The return direction is computed separately and its numbers are not these numbers.
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