Direct (nonstop) flights from Houston to Kalispell
1 airline flys nonstop from George Bush Intcntl Houston (IAH) to Glacier Park Intl (FCA). It's 1,612 miles (2,594 km), about 3h 59m in the air. Operated by United Airlines.
United Airlines
Route data last updated: May 31, 2026
Airlines with non-stop flights
UA
United Airlines
Alternative Routes
Other ways to fly from Houston to Kalispell with one stop · direct emits 272 kg CO₂ per passenger
Looking for the return flight?
FCA → IAH: Flights from Kalispell to HoustonOther direct flights from Houston
Direct flights from Kalispell (FCA)
Frequently Asked Questions
How long is the direct flight from Houston to Kalispell?
A nonstop flight from Houston (IAH) to Kalispell (FCA) takes approximately 3 hours and 59 minutes. The distance is 1,612 miles (2,594 km).
Which airlines fly nonstop from Houston to Kalispell?
Just United Airlines.
Is there a nonstop flight from Houston to Kalispell?
Yes. 1 airline: United Airlines.
How far is Houston from Kalispell?
The flight distance from Houston to Kalispell is 1,612 miles (2,594 km), measured as the great-circle (shortest air) distance.
What type of aircraft flies from Houston to Kalispell?
At 3h 59m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
What is the carbon footprint of a flight from Houston to Kalispell?
Roughly 272 kg CO2 per passenger one-way. That's about the same as driving 1,360 km.
Is the return flight from Kalispell to Houston also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Houston to Kalispell?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at George Bush Intcntl Houston for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.