Direct (nonstop) flights from Raleigh/Durham to Denver

3 airlines fly nonstop from Raleigh–Durham Airport (RDU) to Denver International (DEN). It's 1,436 miles (2,311 km), about 3h 55m in the air. Operated by Frontier Airlines, United Airlines, Southwest Airlines.

RDU
Raleigh–Durham Airport
🇺🇸 Raleigh/Durham, USA
✈
DEN
Denver International
🇺🇸 Denver, USA
Flight Time
3h 55m
Distance
1,436 mi
2,311 km
CO₂/pax
243 kg
−48 kg vs. layover
Airlines
3
Frontier Airlines +2
Time Diff
-2h
Operated by Frontier Airlines Frontier Airlines United Airlines United Airlines Southwest Airlines Southwest Airlines
Check Prices →

Route data last updated: May 31, 2026

Airlines with non-stop flights

Frontier Airlines F9 Frontier Airlines
Route
RDU → DEN
Flight Time
3h 55m
Distance
1,436 mi
United Airlines UA United Airlines
Route
RDU → DEN
Flight Time
3h 55m
Distance
1,436 mi
Southwest Airlines WN Southwest Airlines
Route
RDU → DEN
Flight Time
3h 55m
Distance
1,436 mi

Alternative Routes

Other ways to fly from Raleigh/Durham to Denver with one stop · direct emits 243 kg CO₂ per passenger

RDU → STL (Saint Louis) → DEN
Leg 1: 2h 5m (667 mi) Leg 2: 2h 25m (769 mi) Total: ~4h 30m 🍃 291 kg CO₂ (+20% vs. direct)
Leg 1
RDU → STL
2h 5m · 667 mi
View RDU to STL flights →
Leg 2
STL → DEN
2h 25m · 769 mi
View STL to DEN flights →
RDU → MDW (Chicago) → DEN
Leg 1: 2h (631 mi) Leg 2: 2h 40m (896 mi) Total: ~4h 40m 🍃 308 kg CO₂ (+27% vs. direct)
Leg 1
RDU → MDW
2h · 631 mi
View RDU to MDW flights →
Leg 2
MDW → DEN
2h 40m · 896 mi
View MDW to DEN flights →
RDU → SDF (Louisville) → DEN
Leg 1: 1h 41m (415 mi) Leg 2: 2h 59m (1,023 mi) Total: ~4h 40m 🍃 275 kg CO₂ (+13% vs. direct)
Leg 1
RDU → SDF
1h 41m · 415 mi
View RDU to SDF flights →
Leg 2
SDF → DEN
2h 59m · 1,023 mi
View SDF to DEN flights →
RDU → BNA (Nashville) → DEN
Leg 1: 1h 45m (441 mi) Leg 2: 2h 56m (1,013 mi) Total: ~4h 41m 🍃 278 kg CO₂ (+14% vs. direct)
Leg 1
RDU → BNA
1h 45m · 441 mi
View RDU to BNA flights →
Leg 2
BNA → DEN
2h 56m · 1,013 mi
View BNA to DEN flights →
RDU → IND (Indianapolis) → DEN
Leg 1: 1h 53m (488 mi) Leg 2: 2h 50m (976 mi) Total: ~4h 43m 🍃 280 kg CO₂ (+15% vs. direct)
Leg 1
RDU → IND
1h 53m · 488 mi
View RDU to IND flights →
Leg 2
IND → DEN
2h 50m · 976 mi
View IND to DEN flights →

Looking for the return flight?

DEN → RDU: Flights from Denver to Raleigh/Durham

Other direct flights from Raleigh/Durham

🇩🇪 FRA Frankfurt
8h 8m
4,278 mi
View →
🇫🇷 CDG Paris
7h 45m
4,053 mi
View →
🇬🇧 LHR London
7h 35m
3,872 mi
View →
🇮🇪 DUB Dublin
7h 20m
3,602 mi
View →
🇮🇸 KEF Reykjavik
6h 5m
3,016 mi
View →
🇨🇦 YVR Vancouver
5h 57m
2,403 mi
View →
🇺🇸 SFO San Francisco
6h 3m
2,400 mi
View →
🇺🇸 SEA Seattle
5h 57m
2,354 mi
View →

See all flights from Raleigh/Durham (RDU) →

Direct flights from Denver (DEN)

🇺🇸 PUB Pueblo
48m
108 mi
View →
🇺🇸 CYS Cheyenne
52m
90 mi
View →
🇺🇸 COS Colorado Springs
54m
72 mi
View →
🇺🇸 ALS Alamosa
55m
178 mi
View →
🇺🇸 BFF Scottsbluff
57m
150 mi
View →
🇺🇸 LAR Laramie
57m
114 mi
View →
🇺🇸 HDN Hayden
58m
142 mi
View →
🇺🇸 EGE Vail
58m
120 mi
View →

See all flights from Denver (DEN) →

Frequently Asked Questions

How long is the direct flight from Raleigh/Durham to Denver?

A nonstop flight from Raleigh/Durham (RDU) to Denver (DEN) takes approximately 3 hours and 55 minutes. The distance is 1,436 miles (2,311 km).

Which airlines fly nonstop from Raleigh/Durham to Denver?

3 airlines: Frontier Airlines, United Airlines, Southwest Airlines.

Is there a nonstop flight from Raleigh/Durham to Denver?

Yes. 3 airlines: Frontier Airlines, United Airlines, Southwest Airlines.

How far is Raleigh/Durham from Denver?

The flight distance from Raleigh/Durham to Denver is 1,436 miles (2,311 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as New York to Miami.

What type of aircraft flies from Raleigh/Durham to Denver?

At 3h 55m, 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 Raleigh/Durham to Denver?

Roughly 243 kg CO2 per passenger one-way. That's about the same as driving 1,215 km.

Is the return flight from Denver to Raleigh/Durham 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 Raleigh/Durham to Denver?

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 Raleigh–Durham Airport for this flight?

1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.