To Denver

Cheap Flights from Chicago to Denver

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Deals from

Chicago

RatePunk searches hundreds of travel sites at once for deals on flights to Denver

Prices updated 24 days ago

486,190 searches this week

171 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)

Today’s best flight deals from Chicago to Denver

Explore current cheapest deals departing from Chicago to Denver

Round trip

Sort by: Cheapest

September 15 - October 2

Cheapest

Earliest

ORD - Denver

$129

$85

Round trip

October 21 - October 30

Cheapest

ORD - Denver

$138

$85

Round trip

October 21 - October 23

Cheapest

Best

ORD - Denver

$149

$85

Round trip

October 20 - October 30

Cheapest

ORD - Denver

$133

$85

Round trip

October 28 - October 30

Cheapest

Best

ORD - Denver

$151

$85

Round trip

October 20 - October 23

Cheapest

Best

ORD - Denver

$149

$85

Round trip

October 28 - November 6

Cheapest

ORD - Denver

$141

$85

Round trip

October 20 - November 13

Cheapest

ORD - Denver

$125

$85

Round trip

October 21 - November 6

Cheapest

ORD - Denver

$127

$85

Round trip

October 28 - November 13

Cheapest

ORD - Denver

$130

$85

Round trip

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Route Intelligence — 486,190 Searches this Week

Insights for flights from Chicago to Denver

A typical journey from Chicago to Denver takes about 5h 45m, including connections. This route covers a distance of 1426 km, classifying it as a short-haul flight.

For travelers seeking cheap flights from Chicago to Denver, fares right now are above the typical level. Prices for this route typically range from $117–$454, with a median of $267. Currently, 13% of recent fares are classified as a good price.

When considering the cheapest time to fly from Chicago to Denver, November and September stand out as the most affordable months, both with a median fare of $103. May also offers competitive pricing, with a median fare of $122.

Regarding direct flights from Chicago to Denver, a meaningful share of itineraries are non-stop, while the rest connect once. For itineraries that include connections, the median number of stopovers is 2.

How much is a round trip from Chicago to Denver

Regular price: $96 - $231

Prices are currently below the regular range for flights from Chicago to Denver.

The regular price range for flights from Chicago to Denver is typically between $96 and $231. The current lowest deal is $85 with Frontier Airlines, for travel from September 15 to October 2.

now $85

Low $96

High $231

The cheapest time to fly from Chicago to Denver

The cheapest month to fly from Chicago to Denver is September, with a median price of $103. The most expensive month to fly is June, with a median price of $407. Prices are generally lower from February to December.

September

Cheapest

Flights from $103

June

Most Expensive

Flights from $407

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Chicago to Denver

Frontier Airlines

Last-minute flights going from Chicago to Denver

Sat, Jun 20

⌛ Last-Minute

ORD - Denver

Chicago (ORD) - Denver (DEN)

Frontier Airlines

$360

$228

One-way

Thu, Jul 2

⌛ Last-Minute

ORD - Denver

Chicago (ORD) - Denver (DEN)

Frontier Airlines

$360

$204

One-way

Sat, Jul 4

⌛ Last-Minute

MDW - Denver

Chicago (MDW) - Denver (DEN)

Frontier Airlines

$312

$192

One-way

Sat, Jul 4

⌛ Last-Minute

ORD - Denver

Chicago (ORD) - Denver (DEN)

Frontier Airlines

$355

$196

One-way

Sun, Jul 5

⌛ Last-Minute

ORD - Denver

Chicago (ORD) - Denver (DEN)

Frontier Airlines

$373

$201

One-way

Wed, Jul 8

⌛ Last-Minute

ORD - Denver

Chicago (ORD) - Denver (DEN)

Frontier Airlines

$348

$181

One-way

Biggest price drops on these dates for flights from Chicago to Denver

3 nights

Jul 18 - Jul 21

$359 → $181

50%

2 nights

Jul 5 - Jul 7

$373 → $201

46%

7 nights

Jul 14 - Jul 21

$344 → $174

49%

6 nights

Jul 8 - Jul 14

$348 → $181

48%

Popular Airports to fly from Chicago to Denver

Chicago - Denver route insights

💸 Price insights

Recent fares are above the typical level

Recent fares for Chicago to Denver are above the typical level, with a median price of $267.

📅 Best time to fly

Fly in November or September for the best prices

Historically, November and September offer the lowest median prices at $103 for Chicago to Denver.

⏱️ Flight duration

The median flight time is 5h 45m

Flights from Chicago to Denver typically take 5h 45m, covering a distance of 1426 km.

✈️ Airlines & availability

Frontier Airlines offers direct flights

Frontier Airlines provides direct flights on this route, with 55.9% of deals being direct.

🏆 Airline highlight

Frontier Airlines has a deal for $85

Frontier Airlines offers a deal for $85 from Chicago O Hare International to Denver International.

🎯 Booking tip

Deals are frequent for this route

Deals for Chicago to Denver are frequent, with over 1 deal per day historically.

Chicago main airports to depart from

O Hare International (ORD)

Cheapest

O'Hare International Airport is a major hub for flights from Chicago to Denver, often with competitive pricing.

📍 ~25 km from Chicago city center (reachable by car or train)

💸 Flights from ~$85

Chicago Midway International (MDW)

Chicago Midway International Airport offers another convenient option for flights departing from Chicago to Denver.

📍 ~15 km from Chicago city center (reachable by car or train)

💸 Flights from ~$160

Chicago Rockford International (RFD)

Consider Chicago Rockford International Airport for an alternative departure point from the Chicago area to Denver.

📍 ~120 km from Chicago city center (reachable by car)

💸 Flights from ~$241

Denver main airports to arrive at

Denver International (DEN)

Cheapest

Denver International Airport is a key arrival point for flights from Chicago to Denver.

📍 ~37 km from Denver (reachable by car, bus, or rail).

💸 Flights from ~$85

Airports nearby Denver used as alternative

Colorado Springs (COS)

Cheapest

Colorado Springs offers a robust flight schedule and is a reliable alternative for Denver arrivals.

📍 ~110 km from Denver (reachable by car, ~1.5 hours depending on traffic)

💸 Flights from ~$244

Eagle County Regional (EGE)

Eagle County Regional is a primary alternative for travelers heading to the western mountains.

📍 ~180 km from Denver (reachable by car)

💸 Flights from ~$418

Aspen–Pitkin County (ASE)

Aspen–Pitkin County is popular with frequent service, ideal for travelers to Aspen.

📍 ~200 km from Denver (reachable by car)

💸 Flights from ~$363

Cheyenne Regional (CYS)

Cheyenne Regional is geographically close to northern Denver with easy parking and fast security.

📍 ~150 km from Denver (reachable by car)

💸 Flights from ~$396

Yampa Valley (HDN)

Yampa Valley serves as a viable gateway for the Northwest Colorado region.

📍 ~250 km from Denver (reachable by car)

💸 Flights from ~$371

Business & First Class Flight Deals to Denver

38% AI deal score

$12,921

Frequently Asked Questions About Flights to Denver

Historically, the optimal time to purchase tickets for flights from Chicago to Denver is typically 60+ days before departure. Across the trailing quarter, the average price for tickets booked in this window was $301. In contrast, tickets purchased 0-6 days before departure averaged $820. Planning ahead by at least two months can lead to significant savings on this route.

A flight from Chicago to Denver is considered a good deal if the price is at or below $117. This threshold represents the 25th percentile of prices observed across the trailing 90 days. The median price for this route during that period was $267, while prices in the 75th percentile reached $454. By aiming for prices under $117, travelers can secure a favorable fare.

Historically, the cheapest months to fly from Chicago to Denver are November and September, both with a median price of $103. May also offered competitive fares, with a median price of $122. Across the trailing 270 days, the annual median price for this route was $267, indicating that these specific months offer substantial savings compared to the yearly average.

Related routes

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