Book Flights to Casper (CPR)
Casper/Natrona County International Airport (CPR) is Wyoming's largest city's gateway -- connecting through Denver (United) and Salt Lake City (Delta) to the entire US network. Casper is the base for Oregon Trail history, Casper Mountain recreation, and access to Yellowstone's eastern approaches.
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Why Visit Casper?
Four overland trails, the Great Register of the Desert, Wyoming's best trout water, and a mountain rising from the city's edge
National Historic Trails and Fort Caspar -- Wyoming's Crossroads of the Oregon, Mormon, California, and Pony Express Trails
4 Major Overland Trails Crossed the North Platte River at Casper -- 350,000 Emigrants Passed Through 1841-1869Casper sits at what was one of the most critical crossings on the 19th-century overland trail system -- the point where the Oregon Trail, Mormon Trail, California Trail, and Pony Express route all crossed the North Platte River. The Mormon Trail ferry and ford here (operated by Brigham Young's advance party in 1847) served approximately 350,000 emigrants who passed through between 1841 and the completion of the transcontinental railroad in 1869. Fort Caspar (reconstructed from its 1865 original on the original site) is a museum and historic site commemorating the military post established to protect the telegraph line and trail crossings. The National Historic Trails Interpretive Center (BLM, free) is the premier interpretive facility for the four major overland trails, with exhibits on emigrant life, trail ecology, and the economic and cultural forces that drove the mass westward migration.
The Platte Bridge Battle (1865) and Caspar Collins -- Why Wyoming's Largest City Is Named for a Soldier Who Died Here at Age 21
The fort that became Fort Caspar was originally called Platte Bridge Station. On July 26, 1865, Cheyenne and Arapaho warriors (estimated 1,000-3,000, seeking revenge for the November 1864 Sand Creek Massacre in which Colonel Chivington's Colorado volunteers killed approximately 150 Cheyenne civilians) attacked a wagon train near the station. Lieutenant Caspar Collins (age 21, son of the fort's previous commander Colonel William O. Collins) led a volunteer cavalry charge to rescue the surrounded wagon train. Collins was killed in the engagement -- shot by multiple arrows, he rode through the warrior lines, was unhorsed, and killed. The fort was renamed Fort Caspar in his honor (the misspelling of Caspar as Casper, which became the city's name, was an administrative error in early records). Collins' body was never recovered.
Casper Mountain and Hogadon Basin -- A 9,000-Foot Mountain Rising from the City's Edge
10 Miles from Downtown -- Ski Resort, Trails, Camping, and Casper's Remarkable Skyline BackdropCasper Mountain (peak elevation 8,130 feet, with surrounding ridge terrain reaching 9,000+ feet) rises dramatically from the city's southern edge -- visible from virtually everywhere in Casper, with a 3,000-foot vertical rise from the city (elevation 5,150 feet). The mountain contains Hogadon Basin Ski Area (a small, community-focused ski area, adult lift tickets ~$45 -- among the least expensive in the Mountain West), 30+ miles of hiking trails, Beartrap Meadow and Rotary Park for summer camping and wildlife, and spectacular views of the North Platte River valley, the Casper Mountain hogback ridge, and the Wyoming Basin. The Casper Mountain area is also a world-class paragliding site -- the mountain's thermal lift patterns attract paragliders from across the region.
Casper's Energy Economy and the Wyoming Oil Patch -- How Petroleum Shaped Wyoming's Largest City
Casper's modern identity is inseparable from petroleum: Wyoming's first major oil discovery (Salt Creek Oil Field, 40 miles north of Casper, 1908) made Casper a boom town almost overnight, and subsequent oil, gas, and coal development made Natrona County one of Wyoming's wealthiest counties through most of the 20th century. The Teapot Dome Scandal (1921-1924) -- the largest government corruption scandal in US history until Watergate -- centered on a naval petroleum reserve 50 miles north of Casper: Interior Secretary Albert Fall secretly leased the Teapot Dome and Elk Hills naval petroleum reserves to private oil companies in exchange for bribes totaling approximately $400,000 (equivalent to ~$7 million in 2024). Fall became the first US Cabinet member convicted of crimes committed while in office.
North Platte River Recreation and Pathfinder Reservoir -- World-Class Trout Fishing and High Desert Solitude
Grey Reef Tailwater -- Top 20 Trout River in the US, 12-Mile River Trail Through Casper, and High Desert Reservoir CountryThe North Platte River (flowing through Casper east to Nebraska) provides some of Wyoming's best trout fishing -- the Grey Reef section downstream of Casper is regarded as one of the top 20 trout fishing rivers in the United States, with large populations of brown and rainbow trout in tailwater conditions below Alcova Reservoir. The river through Casper also has a 12-mile multi-use trail along its banks (the Platte River Parkway Trail) used by walkers, cyclists, and runners year-round. Pathfinder Reservoir (45 miles southwest of Casper) and Alcova Reservoir (30 miles southwest) offer sailing, kayaking, and camping in high desert canyon terrain -- the reservoir areas contain natural stone arches, petroglyphs, and geological formations characteristic of Wyoming's basin-and-range landscape.
How the North Platte Became a Great Trout River -- Dam Tailwaters and the Cold Water Paradox
The North Platte River through Casper would historically have been too warm and silty for trout fishing in summer. The construction of Alcova Dam (1938) and Pathfinder Dam (1909) created tailwater fisheries -- sections of river below dams where cold, oxygenated water released from the base of the reservoir creates year-round cold water temperatures ideal for trout even in summer (water at reservoir depth remains 40-50°F year-round, producing river temperatures of 45-58°F in the tailwater even during Wyoming's 90°F July heat). The Grey Reef section (12 miles below Alcova Dam) has one of the highest densities of large trout of any American river -- fish counts have recorded 3,000-5,000 trout per mile in prime sections.
Oregon Trail Ruts and Independence Rock -- Wyoming's Historic Trail Landmarks Within 60 Miles of Casper
Independence Rock (The Great Register of the Desert) and 5-Foot-Deep Wagon Ruts Worn into Wyoming SandstoneWithin 60 miles of Casper lie two of the most significant physical remnants of the Oregon Trail era: Independence Rock (50 miles southwest, on WY-220) is a 1,900-foot-long granite dome rising 130 feet from the Sweetwater River valley, where emigrants carved or painted approximately 5,000 names and inscriptions into the rock between 1841 and 1870 -- earning it the name 'the Great Register of the Desert' (Father De Smet, 1840). Reaching Independence Rock by July 4th was considered the threshold between safe passage and the dangerous possibility of being caught by early Sierra Nevada snowfalls -- hence the 'Independence' name (many wagon trains celebrated the Fourth of July here). The Oregon Trail ruts at Guernsey (85 miles southeast of Casper) are the most dramatic physical remnant of the overland trails anywhere: wagons wore ruts 5 feet deep into the soft sandstone over the 28 years of heavy use, leaving channels you can walk through today.
The Emigrant Experience at Independence Rock -- 350,000 Names, Desperation, and the Math of Survival
The 2,000-mile journey from Independence, Missouri to the Willamette Valley of Oregon took approximately 5-6 months by wagon. Emigrants planning to depart Missouri in late April needed to reach Independence Rock by July 4th to have sufficient margin before the Sierra Nevada snowfalls that typically began in October-November. A family that fell behind this pace faced a terrible calculus: push the oxen harder (risking livestock collapse in the desert), cache supplies to travel faster (risking starvation later), or winter over in the mountains (risking the fate of the Donner Party, 1846-47, in which 41 of 87 emigrants died). Of the approximately 350,000 emigrants who made the journey between 1841 and 1869, an estimated 20,000-30,000 (6-9%) died en route, primarily from cholera (outbreaks in 1849-1852 were particularly deadly), accidents, and exposure.
How to Find Cheap Flights to Casper
Denver (DEN) Is the Primary Hub for Casper -- All CPR Flights Connect Through DEN
Nearly all Casper (CPR) flights connect through Denver International Airport (DEN), United Airlines' hub. When searching for CPR fares, you are effectively searching for DEN-CPR regional jet connections -- the total travel time from any US city to Casper is your DEN connection flight time plus the 1-hour DEN-CPR hop. Build in at least 90 minutes for DEN connections to avoid missed flights due to Denver's busy airspace.
Jackson Hole (JAC) Is an Alternative Wyoming Airport for Yellowstone/Teton Travelers
If your primary destination is Yellowstone National Park or Grand Teton, Jackson Hole Airport (JAC, 170 miles northwest of Casper) has more direct service and is closer to those parks. Casper is Wyoming's largest city and a better gateway for Yellowstone's eastern and southeastern entrances, Independence Rock, and Oregon Trail historic sites. For Yellowstone's South Entrance (the closest from Jackson), JAC is preferable; for the East Entrance and Thermopolis, Casper is better.
Allegiant Seasonal Nonstops from LAS and PHX Can Be Very Cheap -- Check Allegiant Directly
Allegiant Air operates seasonal nonstop leisure flights from Las Vegas (LAS) and Phoenix-Mesa (AZA) to Casper on limited schedules, typically at fares well below the cost of a United connection through Denver. Allegiant does not appear on most aggregator sites; check allegiantair.com directly. Allegiant's fares require careful attention to baggage and change fees -- the low base fare becomes less attractive with bags or if plans change.
Casper Is 3.5 Hours from Yellowstone and 2 Hours from South Dakota -- Plan Accordingly
Casper's location in central Wyoming makes it a hub for multi-destination Wyoming travel. Key distances: Yellowstone National Park East Entrance (3.5 hours via US-20 and WY-789), Mount Rushmore/Badlands (3 hours east via I-25 and I-90), Jackson Hole (2.5 hours via US-26/189), and Sheridan/Bighorn Mountains (2 hours north). Renting a car at CPR is essential for most itineraries.
Airlines Flying to Casper (CPR)
United Airlines
CPR's Primary Carrier -- Denver Hub Connections to United's National and International NetworkUnited Airlines (operating United Express regional partners) is Casper/Natrona County International Airport's primary carrier, with the Denver (DEN) hub as the main connection point for all CPR traffic. The DEN-CPR route is a short 1-hour regional jet hop that feeds Casper travelers into United's full domestic and international network via Denver -- connecting CPR to United's hubs in Chicago (ORD), Houston (IAH), Los Angeles (LAX), San Francisco (SFO), and internationally. United's DEN hub advantage means travelers from Casper can typically reach any major US city in one connection.
Key Routes
DEN to CPR (1h nonstop; ORD to CPR (via DEN, 3h 30m total; IAH to CPR (via DEN, 3h 15m total; LAX to CPR (via DEN, 3h 30m total
Delta Air Lines
Salt Lake City Hub Service -- Delta's CPR Connection Through SLC to the Southeast and East CoastDelta Air Lines connects Casper to its Salt Lake City (SLC) hub with regional jet service -- a 1-hour nonstop that provides access to Delta's nationwide network via SLC, including nonstops to Atlanta (ATL), New York (JFK, LGA), Boston (BOS), Minneapolis (MSP), and Detroit (DTW). Delta's SLC hub is the alternative connection point for Casper travelers preferring Delta's network or loyalty program, and is particularly useful for Southeast-bound travelers (ATL connects to Delta's entire Southeast and international network).
Key Routes
SLC to CPR (1h nonstop; ATL to CPR (via SLC, 4h total; MSP to CPR (via SLC or DEN, 3h total
American Airlines
Dallas-Fort Worth and Phoenix Hub Access -- American's CPR Connections to the South and SouthwestAmerican Airlines connects Casper to its Dallas-Fort Worth (DFW) and Phoenix (PHX) hubs via connecting regional service, providing access to American's southern and southwestern domestic routes and its international network via DFW (one of the world's largest airline hubs). For Casper travelers heading to Texas, the South, Mexico, the Caribbean, or Europe, DFW connections on American are the primary routing option.
Key Routes
DFW to CPR (via DEN or DFW direct connections; PHX to CPR (via regional connections; CLT to CPR (via DFW or connections
Allegiant Air
Seasonal Leisure Routes -- Allegiant's Low-Cost Nonstops from Las Vegas and Phoenix-MesaAllegiant Air operates seasonal nonstop leisure routes from Casper to Las Vegas (LAS) and Phoenix-Mesa (AZA -- Phoenix-Mesa Gateway Airport, 25 miles southeast of PHX) on a limited-frequency schedule (typically 2-3 times per week). Allegiant's model is designed for leisure travelers -- low base fares, very flexible booking (but high change/cancellation fees), and routes connecting small cities directly to leisure destinations without hub connections. Check Allegiant's website directly (allegiantair.com) for current CPR seasonal schedules and fares.
Key Routes
LAS to CPR (2h nonstop, seasonal; AZA to CPR (2h 30m nonstop, seasonal
Things to Do in Casper
Essential Info for Your Casper Trip
State
Wyoming
Airport Code
CPR (Casper/Natrona County International Airport)
Currency
USD -- US Dollar
Time Zone
MST (UTC-7) / MDT (UTC-6) in summer
Primary Hub
Denver (DEN) via United Express -- 1h nonstop. All major US cities reachable via DEN connections.
Distance to Yellowstone
East Entrance: 230 miles, 3.5h via US-20. South Entrance: 220 miles, 3.5h via US-26.
Car Rental
Essential for Casper -- all historic sites, fishing, and mountain access require a car. Rentals available at CPR terminal.
Emergency Number
911
Most Popular Airlines
Best Airlines for Domestic & International Routes
Frequently Asked Questions on Flights to Casper
Everything you need to know about booking cheap flights to Casper, Wyoming (CPR)
Which airport serves Casper, Wyoming?
Casper is served by Casper/Natrona County International Airport (CPR), located 8 miles northwest of downtown Casper. CPR is primarily served by United Express (regional jets to Denver/DEN), Delta Connection (regional jets to Salt Lake City/SLC), and seasonal Allegiant Air leisure routes (Las Vegas, Phoenix-Mesa). All major US cities are accessible from CPR via Denver or Salt Lake City connections.
What is Casper, Wyoming known for?
Casper is Wyoming's largest city (population ~60,000) and is known for: (1) the Oregon, Mormon, California, and Pony Express Trail crossings on the North Platte River; (2) Fort Caspar (1865 reconstruction) and the National Historic Trails Interpretive Center; (3) Casper Mountain (skiing, hiking, 9,000-foot elevation); (4) Grey Reef tailwater trout fishing (one of the US's best); (5) petroleum history (Teapot Dome scandal); (6) Independence Rock (50 miles southwest, the 'Great Register of the Desert' with 5,000 emigrant names); and (7) dramatic high desert and mountain scenery.
How far is Casper from Yellowstone National Park?
Casper is approximately 230 miles south of Yellowstone National Park's East Entrance (via US-20 West through Thermopolis and Worland) -- approximately 3.5-4 hours by car. For Yellowstone's South Entrance, the drive from Casper is approximately 220 miles and 3.5 hours via US-26 West through Douglas and Riverton. Jackson Hole Airport (JAC) is a closer alternative for Yellowstone and Grand Teton visitors, at 170 miles (2.5 hours) from Casper.
When is the best time to visit Casper?
Best weather: June-September (mild temperatures 75-90°F/24-32°C, low humidity, excellent for outdoor activities). Shoulder seasons: May and October offer good weather and fewer crowds. Winter (November-March): cold (-5 to 35°F/-20 to 2°C) with excellent skiing at Hogadon Basin and snowmobiling on Casper Mountain. For Oregon Trail sites: spring and summer when roads to Guernsey ruts and Independence Rock are clear. For Yellowstone access: June-September (most park roads open; Yellowstone's peak is July-August).
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