$151 Cheap Flights from Bellingham (BLI) to Denver (DEN)

View $151 flight on Sat, Oct 11, 2025Opens in a new window

Popular airlines from Bellingham, WA (BLI-Bellingham Intl.) to Denver Intl. Airport (DEN)

    notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
    deals illustration

    Book smarter

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

    Earn twice

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

Cheap Flights from Bellingham to Denver (BLI-DEN)

Prices were available within the past 7 days and start at $151 for one-way flights and $289 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Oct 25 - Sat, Nov 1
BLI
Bellingham
DEN
Denver
$289 Roundtrip, found 19 hours ago
$289
Roundtrip
found 19 hours ago
Select Alaska Airlines flight, departing Sat, Oct 25 from Bellingham to Denver, returning Sat, Nov 1, priced at $289 found 19 hours ago
Alaska Airlines
Wed, Oct 22 - Wed, Oct 29
BLI
Bellingham
DEN
Denver
$298 Roundtrip, found 1 day ago
$298
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Oct 22 from Bellingham to Denver, returning Wed, Oct 29, priced at $298 found 1 day ago
Alaska Airlines
Sat, Oct 25 - Sat, Nov 1
BLI
Bellingham
DEN
Denver
$302 Roundtrip, found 19 hours ago
$302
Roundtrip
found 19 hours ago
Select Alaska Airlines flight, departing Sat, Oct 25 from Bellingham to Denver, returning Sat, Nov 1, priced at $302 found 19 hours ago
Hawaiian Airlines
Sat, Oct 4 - Wed, Oct 15
BLI
Bellingham
DEN
Denver
$308 Roundtrip, found 1 day ago
$308
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Sat, Oct 4 from Bellingham to Denver, returning Wed, Oct 15, priced at $308 found 1 day ago
Hawaiian Airlines
Tue, Sep 30 - Wed, Oct 1
BLI
Bellingham
DEN
Denver
$310 Roundtrip, found 6 days ago
$310
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Tue, Sep 30 from Bellingham to Denver, returning Wed, Oct 1, priced at $310 found 6 days ago
Alaska Airlines
Sat, Oct 25 - Sat, Nov 1
BLI
Bellingham
DEN
Denver
$312 Roundtrip, found 19 hours ago
$312
Roundtrip
found 19 hours ago
Select Alaska Airlines flight, departing Sat, Oct 25 from Bellingham to Denver, returning Sat, Nov 1, priced at $312 found 19 hours ago
Hawaiian Airlines
Wed, Oct 22 - Thu, Oct 23
BLI
Bellingham
DEN
Denver
$315 Roundtrip, found 4 days ago
$315
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Wed, Oct 22 from Bellingham to Denver, returning Thu, Oct 23, priced at $315 found 4 days ago
Alaska Airlines
Sat, Jan 31 - Sat, Feb 7
BLI
Bellingham
DEN
Denver
$316 Roundtrip, found 3 days ago
$316
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Jan 31 from Bellingham to Denver, returning Sat, Feb 7, priced at $316 found 3 days ago
Hawaiian Airlines
Tue, Sep 30 - Fri, Oct 3
BLI
Bellingham
DEN
Denver
$319 Roundtrip, found 6 days ago
$319
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Tue, Sep 30 from Bellingham to Denver, returning Fri, Oct 3, priced at $319 found 6 days ago
American Airlines
Wed, Oct 22 - Wed, Oct 29
BLI
Bellingham
DEN
Denver
$424 Roundtrip, found 1 day ago
$424
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Oct 22 from Bellingham to Denver, returning Wed, Oct 29, priced at $424 found 1 day ago

Find the cheapest month to fly from Bellingham (BLI) to Denver (DEN)

May is typically the cheapest month to fly

From $227 - $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 $441
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $441
Flights from Bellingham (BLI) to Denver (DEN)
Origin airport
Bellingham Intl.
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, American Airlines, Hawaiian Airlines
Roundtrip price
$288
Distance
1073 mi

Bellingham to Denver Flights

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

 

The best time to book a flight from Bellingham to Denver

Sunday is one of the best days to book for cheap flights from Bellingham 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 Bellingham 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 Bellingham to Denver in 2025. You can also book with separate airlines for your outbound and return journeys, from $151 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 Bellingham 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 Bellingham 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 Bellingham Intl. Airport (BLI) to Denver Intl. Airport (DEN) cost?
Get a cheap one-way flight from $151 or cheap return flight from $289 from Bellingham Intl. Airport (BLI) to Denver Intl. Airport (DEN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Bellingham Intl. Airport (BLI) to Denver Intl. Airport (DEN)?
October is the cheapest month to fly from BLI to DEN. Avoiding peak travel times is often the key to scoring lower fares.
What is the cheapest airline that flies from Bellingham Intl. Airport (BLI) to Denver Intl. Airport (DEN)?
To find the cheapest airline flying from BLI to DEN, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Bellingham Intl. Airport (BLI) to Denver Intl. Airport (DEN)?
Nonstop flights from Bellingham Intl. Airport (BLI) to Denver Intl. Airport (DEN) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BLI to DEN?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What airline has the least delays from BLI to DEN?
With 100% of flights generally arriving on schedule, Southwest Airlines has the best on-time performance for direct flights from Bellingham Intl. Airport (BLI) to Denver Intl. Airport (DEN). To keep track of your flight status and get notifications if anything changes, use the Expedia App.
What is the best time to fly from Bellingham Intl. Airport (BLI) to Denver Intl. Airport (DEN)?
To avoid possible delays on the Bellingham Intl. Airport (BLI) to Denver Intl. Airport (DEN) route, aim to travel before 3 PM. Later departures have a 22% higher chance of being 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.
Is it cheaper to buy a plane ticket from Bellingham Intl. Airport (BLI) to Denver Intl. Airport (DEN) last-minute?
Last-minute bookings from BLI to DEN are typically more expensive. To lock in the lowest prices, start looking for flights early. That being said, if you're flexible with your travel plans, it's possible to land a cheap fare just before your departure.
Is it cheaper to book a BLI to DEN flight and hotel package?
You can save money by securing a BLI to DEN flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. Once you've selected your ideal accommodations and flights, consider adding extras like car rentals, activities and tours.
Can I cancel or change the date of my flight from Bellingham Intl. Airport (BLI) to Denver Intl. Airport (DEN)?
If you booked your BLI to DEN flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more details.

Explore a world of travel with Expedia

*Available to One Key members.