Denver International Airport
23 miles (37 km) from the city centre. 82.4 million passengers in 2024
| How | Route | Time | Cost |
|---|---|---|---|
| Train | RTD A Line to Denver Union Station | about 37m | $10 Airport Day Pass |
Flights from IAH to DEN
2 airlines fly nonstop from George Bush Intercontinental Airport to Denver International Airport. George Bush Intercontinental Airport (Houston) to Denver International Airport (Denver).
- Distance
- 862 mi
- Nonstop flight
- Varies
- Time difference
- −1h
- Nonstop airlines
- 2
Fares from IAH to DEN
Checking today’s fares with the airlines.
Nonstop flights
| Airline | From | To |
|---|---|---|
| Frontier Airlines | IAH George Bush Intercontinental Airport | DEN Denver International Airport |
| United Airlines | IAH George Bush Intercontinental Airport | DEN Denver International Airport |
Nonstop service as of October 2026. Airlines change schedules seasonally.
Getting from the airport into Denver
Before you go
No passport or visa is needed for domestic travel, but a REAL ID-compliant license or another accepted ID is required to fly within the US.
Denver is 1 hour behind Houston. Denver uses the US dollar (USD).
Read the Denver guide: when to go, weather, airports and tips
Frequently asked questions
How long is the flight from IAH to DEN?
Nonstop flight times vary by airline and season; flights with a connection take longer.
Which airlines fly nonstop from IAH to DEN?
As of October 2026, Frontier Airlines and United Airlines fly this route nonstop.
How far is DEN from IAH?
About 862 miles (1,387 km) between the airports.
What is the time difference?
Denver is 1 hour behind Houston.
What ID do I need to fly to Denver?
No passport or visa is needed for domestic travel, but a REAL ID-compliant license or another accepted ID is required to fly within the US.
How do I get from Denver International Airport into Denver?
RTD A Line to Denver Union Station, about 37 minutes, $10 Airport Day Pass.
Related pages
Sources
Information checked in October 2026. Schedules, fares and entry rules change, so confirm with the airline or the official source before you travel.