$137 Cheap Flights from Billings (BIL) to Denver (DEN)

View $137 flight on Sat, Mar 7, 2026Opens in a new window

Popular airlines from Billings Logan Intl. Airport (BIL) to Denver Intl. Airport (DEN)

Cheap Flights from Billings to Denver (BIL-DEN)

Prices were available within the past 7 days and start at $137 for one-way flights and $189 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Apr 16 - Sun, Apr 19
BIL
Billings
DEN
Denver
$189 Roundtrip, found 4 hours ago
$189
Roundtrip
found 4 hours ago
Select United flight, departing Thu, Apr 16 from Billings to Denver, returning Sun, Apr 19, priced at $189 found 4 hours ago
United
Thu, Jan 15 - Sun, Jan 18
BIL
Billings
DEN
Denver
$198 Roundtrip, found 12 hours ago
$198
Roundtrip
found 12 hours ago
Select United flight, departing Thu, Jan 15 from Billings to Denver, returning Sun, Jan 18, priced at $198 found 12 hours ago
United
Fri, Apr 10 - Sun, Apr 12
BIL
Billings
DEN
Denver
$199 Roundtrip, found 4 days ago
$199
Roundtrip
found 4 days ago
Select United flight, departing Fri, Apr 10 from Billings to Denver, returning Sun, Apr 12, priced at $199 found 4 days ago
United
Thu, Apr 16 - Sun, Apr 19
BIL
Billings
DEN
Denver
$201 Roundtrip, found 4 hours ago
$201
Roundtrip
found 4 hours ago
Select United flight, departing Thu, Apr 16 from Billings to Denver, returning Sun, Apr 19, priced at $201 found 4 hours ago
Alaska Airlines
Fri, Jan 30 - Mon, Feb 2
BIL
Billings
DEN
Denver
$206 Roundtrip, found 3 days ago
$206
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Fri, Jan 30 from Billings to Denver, returning Mon, Feb 2, priced at $206 found 3 days ago
Delta
Sat, Feb 21 - Mon, Feb 23
BIL
Billings
DEN
Denver
$209 Roundtrip, found 5 hours ago
$209
Roundtrip
found 5 hours ago
Select Delta flight, departing Sat, Feb 21 from Billings to Denver, returning Mon, Feb 23, priced at $209 found 5 hours ago
United
Thu, Mar 12 - Sat, Mar 14
BIL
Billings
DEN
Denver
$210 Roundtrip, found 17 hours ago
$210
Roundtrip
found 17 hours ago
Select United flight, departing Thu, Mar 12 from Billings to Denver, returning Sat, Mar 14, priced at $210 found 17 hours ago
Alaska Airlines
Fri, Jan 30 - Mon, Feb 2
BIL
Billings
DEN
Denver
$212 Roundtrip, found 3 days ago
$212
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Fri, Jan 30 from Billings to Denver, returning Mon, Feb 2, priced at $212 found 3 days ago
Hawaiian Airlines
Mon, Mar 9 - Wed, Mar 11
BIL
Billings
DEN
Denver
$278 Roundtrip, found 3 days ago
$278
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Mon, Mar 9 from Billings to Denver, returning Wed, Mar 11, priced at $278 found 3 days ago
American Airlines
Tue, Mar 17 - Tue, Mar 24
BIL
Billings
DEN
Denver
$437 Roundtrip, found 16 hours ago
$437
Roundtrip
found 16 hours ago
Select American Airlines flight, departing Tue, Mar 17 from Billings to Denver, returning Tue, Mar 24, priced at $437 found 16 hours ago

Find the cheapest month to fly from Billings (BIL) to Denver (DEN)

September is typically the cheapest month to fly

From $189 - $444 per traveler.

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 $389
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $389
Flights from Billings (BIL) to Denver (DEN)
Origin airport
Logan Intl.
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$189
Distance
455 mi
Average flight time
1 hour 44 mins

Billings to Denver Flights

The cheapest times to fly from Billings 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 Billings to Denver are during the month of April. You can find some of the cheapest flights from Billings to Denver with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Billings to Denver

Sunday is one of the best days to book for cheap flights from Billings 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 Billings 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 Billings to Denver in 2026. You can also book with separate airlines for your outbound and return journeys, from $137 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 Billings 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 Billings 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.

 

Frequently asked questions

How much does a flight from Logan Intl. Airport (BIL) to Denver Intl. Airport (DEN) cost?
Snag a cheap one-way flight from $137 or cheap return flight from $189 from Logan Intl. Airport (BIL) to Denver Intl. Airport (DEN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Logan Intl. Airport (BIL) to Denver Intl. Airport (DEN)?
April is the cheapest month to fly from BIL to DEN. Traveling outside of peak seasons is often the key to scoring lower fares.
Which airlines fly direct from Logan Intl. Airport (BIL) to Denver Intl. Airport (DEN)?
When heading out of Logan Intl. Airport (BIL), you can get on a direct flight to Denver Intl. Airport (DEN) with United Airlines.
What is the cheapest airline that flies from Logan Intl. Airport (BIL) to Denver Intl. Airport (DEN)?
To find the cheapest airline that'll fly you from BIL to DEN, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Logan Intl. Airport (BIL) to Denver Intl. Airport (DEN)?
When flying out of Logan Intl. Airport (BIL), you can take your pick from an average of 4 daily direct flights to Denver Intl. Airport (DEN).
What are the most popular departure times for flights from Logan Intl. Airport (BIL) to Denver Intl. Airport (DEN)?
Flights between BIL and DEN tend to be busiest at 7 AM. If you're after a quieter trip and potentially cheaper fares, choose a departure that's outside typical rush times.
What day of the week has the most flights from BIL to DEN?
Jet off on a Friday if you're looking for the best choice of flights from Logan Intl. Airport (BIL) to Denver Intl. Airport (DEN).
What is the earliest flight from Logan Intl. Airport (BIL) to Denver Intl. Airport (DEN)?
Logan Intl. Airport (BIL)'s first flight to Denver Intl. Airport (DEN) leaves at approximately 7:00AM UTC-7. With a total flight time of 1h 38m, you'll arrive at around 8:38AM UTC-7.
How long does it take to fly from Logan Intl. Airport (BIL) to Denver Intl. Airport (DEN)?
The average flight time from BIL to DEN is 1 hour and 43 minutes, covering a distance of 460 mi.
What airline has the least delays from BIL to DEN?
United Airlines has the best track record for on-time direct flights from Logan Intl. Airport (BIL) to Denver Intl. Airport (DEN), with an on-time score of 83%. Use the Expedia App to check your flight schedule before you head off and get notified of any trip changes.
What is the best time to fly from Logan Intl. Airport (BIL) to Denver Intl. Airport (DEN)?
Opt for a flight from Logan Intl. Airport (BIL) to Denver Intl. Airport (DEN) that takes off before 3 PM to reduce the risk of cancellations and delays. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Denver from Logan Intl. Airport (BIL)?
Browse your flight options from Logan Intl. Airport (BIL) to Denver Intl. Airport (DEN). This is the only airport in Denver you can jet into if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Logan Intl. Airport (BIL) to Denver Intl. Airport (DEN) last-minute?
Holding off until right before your break to book a ticket from BIL to DEN generally means paying more. Although you may find some last-minute discounts, they aren't always guaranteed. Allow some flexibility in your schedule to boost your chances of getting a bargain.
Is it cheaper to book a BIL to DEN flight and hotel package?
Compared with arranging flights and hotels separately, booking a BIL to DEN flight and hotel package with Expedia could lead to significant savings. Better yet, having it all in one place will take the stress out of planning your trip. Just secure your flights and select from our wide range of hotels, then personalize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Logan Intl. Airport (BIL) to Denver Intl. Airport (DEN)?
If you reserved your BIL to DEN flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you want more information.

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*Available to One Key members.