Denver, CO to Naperville, IL Flights

The earliest flight from Denver, CO to Naperville, IL leaves at 5:01 AM. Plan your trip with the Journey Planner from Omio.

The latest flight from Denver, CO to Naperville, IL leaves at 10:49 PM.

Flights from Denver, CO to Naperville, IL generally leave from Denver International Airport and arrive in O'Hare International Airport.Denver International Airport is 11 miles (18 km) away from Denver, CO city centre and O'Hare International Airport is 1 miles (3 km) from Naperville, IL city centre.

Yes, you can take a train between Denver, CO and Naperville, IL.

For domestic flights we recommend to arrive 1.5 to 2 hours before departure. Please check the website of your departure airport if in doubt. Some airports may offer booking time slots for security checks or offer additional information on when to get there based on time of day.

Most airlines permit carry-on bags that fit within specific dimensions (e.g., 22 x 14 x 9 inches or 56 x 36 x 23 cm), including handles and wheels. Bags must fit in the overhead bin or under the seat in front of you.

Many airlines impose weight limits, commonly ranging between 7 kg (15 lbs) and 12 kg (26 lbs). Typically, passengers are allowed one carry-on bag and one personal item (for example a purse, laptop bag, or backpack). Personal items must fit under the seat in front of you. Budget Airlines (like Ryanair or Wizz Air) have stricter size and weight limits, often requiring fees for larger carry-ons. Full-Service Airlines have more lenient policies, sometimes including more spacious dimensions or higher weight limits depending on your ticket class.

The list of items prohibited on an airplane varies by country and airline, but in general, the following items are not allowed in carry-on or checked baggage: Weapons and self-defence items, sharp objects, flammable materials, explosives, toxic substances, or liquids over 100ml (except for medications and baby essentials). In checked baggage, firearms (without authorization), explosives, large lithium batteries, and hazardous chemicals are prohibited. Electronic cigarettes must be in carry-on bags, while alcohol and dry ice have restrictions. Always check with your airline for specific regulations.

The currency used in the United States is the US Dollar (USD). For travelers, using cards is generally more convenient and widely accepted, especially credit and debit cards, while cash is useful for small purchases or places that do not accept cards.

In Naperville, IL, travelers should be aware of common urban safety concerns such as petty theft and occasional scams targeting visitors, including fake ticket sellers or ride services. It is advised to use official transportation providers, avoid sharing personal information with strangers, and remain vigilant in crowded areas like downtown or popular attractions. Overall, Naperville is considered a safe city, but standard precautions help ensure a smooth visit.

Pack lightweight, versatile clothing suitable for the destination's climate, and use secure, lockable luggage to protect belongings. Keep essential items like travel documents, medication, and valuables in a carry-on bag for easy access. Use packing organizers or cubes to maximize space and maintain order. Lastly, include a small first aid kit and personal hygiene items for added comfort during travel.