$154 Cheap Flights from Moline (MLI) to Denver (DEN)

View $154 flight on Tue, May 5, 2026Opens in a new window

Popular airlines from Quad City Intl. Airport (MLI) to Denver Intl. Airport (DEN)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Moline to Denver (MLI-DEN)

Prices were available within the past 7 days and start at $154 for one-way flights and $209 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, May 5 - Tue, May 12
MLI
Moline
DEN
Denver
$209 Roundtrip, found 2 days ago
$209
Roundtrip
found 2 days ago
Select United flight, departing Tue, May 5 from Moline to Denver, returning Tue, May 12, priced at $209 found 2 days ago
United
Sat, Apr 11 - Tue, Apr 14
MLI
Moline
DEN
Denver
$219 Roundtrip, found 4 hours ago
$219
Roundtrip
found 4 hours ago
Select United flight, departing Sat, Apr 11 from Moline to Denver, returning Tue, Apr 14, priced at $219 found 4 hours ago
United
Tue, Mar 10 - Sun, Mar 15
MLI
Moline
DEN
Denver
$229 Roundtrip, found 1 day ago
$229
Roundtrip
found 1 day ago
Select United flight, departing Tue, Mar 10 from Moline to Denver, returning Sun, Mar 15, priced at $229 found 1 day ago
American Airlines
Sat, Apr 11 - Tue, Apr 14
MLI
Moline
DEN
Denver
$229 Roundtrip, found 4 hours ago
$229
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Sat, Apr 11 from Moline to Denver, returning Tue, Apr 14, priced at $229 found 4 hours ago
Delta
Sat, Apr 11 - Tue, Apr 14
MLI
Moline
DEN
Denver
$229 Roundtrip, found 4 hours ago
$229
Roundtrip
found 4 hours ago
Select Delta flight, departing Sat, Apr 11 from Moline to Denver, returning Tue, Apr 14, priced at $229 found 4 hours ago
United
Sat, Mar 7 - Tue, Mar 10
MLI
Moline
DEN
Denver
$229 Roundtrip, found 9 hours ago
$229
Roundtrip
found 9 hours ago
Select United flight, departing Sat, Mar 7 from Moline to Denver, returning Tue, Mar 10, priced at $229 found 9 hours ago
United
Thu, Mar 19 - Tue, Mar 24
MLI
Moline
DEN
Denver
$238 Roundtrip, found 20 hours ago
$238
Roundtrip
found 20 hours ago
Select United flight, departing Thu, Mar 19 from Moline to Denver, returning Tue, Mar 24, priced at $238 found 20 hours ago
United
Wed, May 6 - Wed, May 13
MLI
Moline
DEN
Denver
$239 Roundtrip, found 10 hours ago
$239
Roundtrip
found 10 hours ago
Select United flight, departing Wed, May 6 from Moline to Denver, returning Wed, May 13, priced at $239 found 10 hours ago
United
Mon, May 11 - Sat, May 16
MLI
Moline
DEN
Denver
$242 Roundtrip, found 6 days ago
$242
Roundtrip
found 6 days ago
Select United flight, departing Mon, May 11 from Moline to Denver, returning Sat, May 16, priced at $242 found 6 days ago
United
Wed, May 6 - Wed, May 13
MLI
Moline
DEN
Denver
$243 Roundtrip, found 10 hours ago
$243
Roundtrip
found 10 hours ago
Select United flight, departing Wed, May 6 from Moline to Denver, returning Wed, May 13, priced at $243 found 10 hours ago

The Annual Vacation Sale

Members save up to 40% on hotels and homes. Plan this year’s big trip and save.
Book now

Alternative airports near Denver

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city center is 32 minutes. Flights from $249
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $249

Find the cheapest month to fly from Moline (MLI) to Denver (DEN)

October is typically the cheapest month to fly

From $193 - $458 per traveler.

Frequently asked questions

How much does a flight from Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.) cost?
You can find cheap one-way flights from $154 and cheap return flights from $209 Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.) with Expedia. One-way flights usually range from $222 to $684, and return flights typically cost between $303 and $1399. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.)?
The cheapest month to fly from MLI to DEN is May when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.)?
United offers around 7 weekly direct flights from MLI to DEN.
What is the cheapest airline that flies from Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.)?
United is one of the cheapest airlines offering nonstop flights from Moline (MLI) to Denver (DEN), with round-trip tickets starting from around $209. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.)?
To find a cheap flight from Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.)?
The best airline to fly with from Moline, IL (MLI) to Denver, CO (DEN) will differ from traveler to traveler. If you like to fly early, United offers early morning flights. If price is the most important factor, United typically offers the lowest fares. United offers the most daily flights from Moline to Denver, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.)?
You can find approximately 1 nonstop flights per day from Quad City Intl. (MLI) to Denver Intl. (DEN). For more options, look at flights that include layovers.
What is the earliest flight from Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.)?
The earliest flight from Moline, IL (Quad City International Airport) to Denver, CO (Denver International Airport) typically departs at around 5:00 AM, operated by American Airlines. This is a seasonal service active in July, allowing you to start your day early and maximize your time in Denver. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.)?
The most popular departure times for flights from Moline, IL (MLI) to Denver, CO (DEN) are from 6am to 9am. About 38% of passengers prefer this time window. Many major carriers, including American Airlines and United Airlines, offer flights during this window. This timing is favored as it allows travelers to maximize their time in Denver.
How long does it take to fly from Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.)?
Direct flights from MLI to DEN usually take about 2 hours 50 minutes, traveling roughly 750 miles. If you opt for a connecting flight, expect to add around 4 hours 10 minutes to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.)?
You can fly first class between MLI and DEN. First class cabins are available on:

  • American Airlines
  • United Airlines
  • Delta Air Lines

How much is a business class flight from Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.)?
A direct, return business class ticket from Moline (MLI) to Denver (DEN) typically costs between $915 - $1,337. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.) flight with Expedia?
It's easy to earn miles on a Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Denver from Quad City Intl. (MLI)?
From Quad City Intl. (MLI), you can fly into Denver Intl. (DEN) to reach Denver. Some flights may connect through major hubs like O'Hare Intl. (ORD), Hartsfield-Jackson Atlanta Intl. (ATL), Dallas-Fort Worth Intl. (DFW) before reaching Denver. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.) at the last minute?
Typically, booking a last minute flight from Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.) flight and hotel package?
Securing a Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.) Denver Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.)?
If you booked your Moline, IL (MLI-Quad City Intl.) to Denver, CO (DEN-Denver Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Quad City Intl.
Destination airport
Denver Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
$209
Distance
749 mi
Average flight time
2 hours 46 mins

Book with confidence

Moline to Denver Flights

The cheapest times to fly from Moline to Denver

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Moline to Denver are during the month of May. You can find some of the cheapest flights from Moline to Denver with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Moline to Denver

Sunday is one of the best days to book for cheap flights from Moline to Denver: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Moline to Denver

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Moline to Denver in 2026. You can also book with separate airlines for your outbound and return journeys, from $154 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Moline to Denver flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Moline to Denver airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Moline to Denver Flights

*Flight schedules are subject to change.

Explore a world of travel with Expedia

*Available to One Key members.