A nonstop commercial flight from Portland International Airport (PDX) to Denver International Airport (DEN) covers about 991 miles (1,595 km) and takes roughly 2 hours 22 minutes in the air.
Quick Fact
The direct flight distance from Portland International Airport (PDX) to Denver International Airport (DEN) is 991 miles (1,595 kilometers).
That’s measured as a “great-circle” route—the shortest path between two points on a globe. Most nonstop flights cruise for around 2 hours 22 minutes at 35,000–39,000 ft. Airlines fly this route daily with multiple departures, making it one of the busiest transcontinental links in the western U.S.
Geographic Context
This route connects the Pacific Northwest to the Rocky Mountains via a flight path that crosses Oregon’s high desert, Idaho’s Snake River Plain, and Utah’s Wasatch Range before reaching Denver.
From PDX’s runway 10R, planes head northeast over Washington’s Columbia Plateau. After crossing into Idaho, the flight skirts the northern edge of the Great Salt Lake, then climbs over the Wasatch Mountains at about 9,000–10,000 ft. When you land at DEN, you’re dropping onto Colorado’s Front Range—where the elevation jumps from near sea level in Portland to 5,280 ft in Denver.
Key Details
| Metric | Detail |
|---|
| Airports | Portland International (PDX) → Denver International (DEN) |
| Great Circle Distance | 991 miles / 1,595 km / 861 nautical miles |
| Typical Flight Time | ~2 h 22 m nonstop |
| Comparative Distance | Shorter than PDX→ORD (1,724 mi); longer than PDX→SFO (550 mi) |
| Major Airlines | United, Southwest, Frontier, Alaska Airlines |
| Average Ticket Price (2026) | $160–$320 round-trip, round-trip booking window 1–4 months ahead |
Interesting Background
Denver’s 5,280-ft elevation—one mile above sea level—shapes everything from runway length to cabin pressurization and even how your ears pop on descent.
Portland sits just 16 ft above sea level, so that 5,264-ft climb is the steepest altitude gain on any major U.S. nonstop route. Because the jet stream often barrels across Wyoming and Colorado, winter flights westbound can hit strong headwinds that push travel time closer to 2 hours 45 minutes. Frontier Airlines kicked off low-cost, high-frequency service here in 2016, and those price wars still keep average fares among the lowest between the West Coast and Denver. If you're looking for ways to protect your travel investment, Expedia travel protection options can be worth considering.
Practical Information
As of 2026, no domestic COVID-19 travel restrictions apply for flights between Oregon and Colorado; verification is still recommended via the CDC.
Expect 15-minute security waits at PDX on weekdays; DEN’s concourses are massive—budget 25 minutes between gates on opposite ends. Connecting passengers should add a 45-minute buffer for the 1.5-mile walk or free train ride between terminals. One travel hack: use airline apps to lock in seats early—middle seats on this route sell out fast during peak summer travel (June–August). If you're traveling with pets, you may want to check airline policies for flying with dogs.
