What is the cheapest month to fly to Boulder?

Currently, January is the cheapest month in which you can book a flight to Boulder . Flying to Boulder in July will prove the most costly. There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

In terms of precipitation, rainfall in Boulder ranges from 13.0 - 58.0 mm per month. May is typically the wettest month, when rainfall can reach 58.0 mm. January is typically the driest time to visit Boulder when rainfall is around 13.0 mm.

Can I find cheaper flights to Boulder if I am willing to have layovers?

Yes, flights with layovers are often cheaper than direct flights. Keep an eye out for flight deals to Boulder on Cheapflights that require 1 or 2 stops for potential cost savings.

What is the best airline to fly to Boulder?

Based on reviews from Cheapflights users, WestJet is rated the highest out of the airlines that fly to Boulder.

What is the cheapest airport to fly to in Boulder?

null is currently the cheapest airport to fly to in Boulder. One-way flights to null typically cost null, while round-trip flights cost around null.

How much is a round-trip flight to Boulder?

A round-trip flight to Boulder will typically cost around C$ 163, however they can be found for as little as C$ 38.

Where does the fastest flight to Boulder depart from?

For those looking to save time traveling to Boulder, Calgary offers the quickest one-way flight (2 hours 26 minutes).

Does Denver Intl Airport have rental cars?

Yes. Those touching down at Denver Intl Airport can take advantage of the rental car services offered upon their arrival.

Are there hotels close to Denver Intl Airport?

Yes. Denver Intl Airport has hotels nearby for those requiring accommodations. The Westin Denver International Airport is the closest property to Denver Intl Airport (0.0 km away from Denver Intl Airport).

Cheap Flights to Boulder from C$ 202

Flights to Boulder in 2024

Popular in	August
Cheapest in	March
Average price	C$ 522
Round-trip from	C$ 314
One-way from	C$ 202

High demand for flights, 10% potential price rise

Search Deals

Best time to find cheap flights, 1% potential price drop

Search Deals

Average for round-trip flights in April 2024

Search Deals

From Toronto to Denver Intl

Search Deals

One-way flight from Toronto to Boulder

Search Deals

Cheap flights to Boulder in April & May 2024

The below flights offer some of the lowest fares to Boulder in April and May 2024. Check back soon for alternative prices as deals update often.

Sat 25/52:00 p.m.YYZ - DEN

1 stop9h 32mMultiple Airlines

Sat 1/65:45 a.m.DEN - YYZ

2 stops14h 44mMultiple Airlines

Deal found 27/4C$ 498

Tue 28/55:10 p.m.YTZ - DEN

1 stop10h 05mMultiple Airlines

Mon 3/69:41 p.m.DEN - YTZ

1 stop11h 01mMultiple Airlines

Deal found 26/4C$ 508

Wed 1/52:55 p.m.YYZ - DEN

1 stop30h 34mMultiple Airlines

Tue 7/57:33 p.m.DEN - YYZ

1 stop9h 02mMultiple Airlines

Deal found 27/4C$ 508

Tue 28/510:25 p.m.YYZ - DEN

2 stops21h 43mMultiple Airlines

Tue 4/610:50 a.m.DEN - YYZ

1 stop6h 45mMultiple Airlines

Deal found 27/4C$ 517

Fri 3/59:00 p.m.YYZ - DEN

1 stop14h 00mMultiple Airlines

Mon 6/510:56 p.m.DEN - YYZ

1 stop29h 39mMultiple Airlines

Deal found 27/4C$ 518

Fri 24/58:00 p.m.YYZ - DEN

1 stop15h 42mMultiple Airlines

Tue 28/57:15 p.m.DEN - YYZ

1 stop9h 27mMultiple Airlines

Deal found 27/4C$ 521

Fri 31/54:15 p.m.YYZ - DEN

2 stops26h 40mMultiple Airlines

Tue 4/64:55 p.m.DEN - YYZ

2 stops35h 47mMultiple Airlines

Deal found 26/4C$ 526

Mon 27/58:00 p.m.YYZ - DEN

1 stop18h 00mMultiple Airlines

Mon 3/67:03 p.m.DEN - YYZ

1 stop9h 37mMultiple Airlines

Deal found 27/4C$ 528

Thu 30/510:15 a.m.YYZ - DEN

1 stop9h 06mMultiple Airlines

Sun 9/67:04 p.m.DEN - YYZ

1 stop9h 31mMultiple Airlines

Deal found 26/4C$ 530

Boulder 2024 flight deals

These are some of the most attractive deals on flights to Boulder in 2024. Check back in a little while for more flight options.

Sat 1/65:10 p.m.YTZ - DEN

1 stop10h 05mMultiple Airlines

Tue 4/610:23 a.m.DEN - YTZ

1 stop7h 34mMultiple Airlines

Deal found 26/4C$ 495

Sat 15/62:40 p.m.YYZ - DEN

1 stop8h 19mMultiple Airlines

Thu 18/710:40 a.m.DEN - YYZ

1 stop8h 20mMultiple Airlines

Deal found 27/4C$ 496

Sat 25/52:00 p.m.YYZ - DEN

1 stop9h 32mMultiple Airlines

Sat 1/65:45 a.m.DEN - YYZ

2 stops14h 44mMultiple Airlines

Deal found 27/4C$ 498

Sat 15/62:40 p.m.YYZ - DEN

1 stop8h 19mMultiple Airlines

Fri 19/76:10 a.m.DEN - YYZ

1 stop12h 50mMultiple Airlines

Deal found 27/4C$ 503

Sun 16/68:20 p.m.YYZ - DEN

1 stop9h 49mMultiple Airlines

Thu 18/710:40 a.m.DEN - YYZ

1 stop8h 20mMultiple Airlines

Deal found 27/4C$ 504

Sun 16/68:20 p.m.YYZ - DEN

1 stop9h 49mMultiple Airlines

Sun 14/78:44 p.m.DEN - YYZ

1 stop7h 59mMultiple Airlines

Deal found 27/4C$ 506

Tue 28/55:10 p.m.YTZ - DEN

1 stop10h 05mMultiple Airlines

Mon 3/69:41 p.m.DEN - YTZ

1 stop11h 01mMultiple Airlines

Deal found 26/4C$ 508

Wed 1/52:55 p.m.YYZ - DEN

1 stop30h 34mMultiple Airlines

Tue 7/57:33 p.m.DEN - YYZ

1 stop9h 02mMultiple Airlines

Deal found 27/4C$ 508

Sat 1/610:45 a.m.YTZ - DEN

1 stop11h 00mMultiple Airlines

Wed 5/68:38 a.m.DEN - YTZ

1 stop9h 19mMultiple Airlines

Deal found 26/4C$ 510

Flights to Boulder departing soon

Have a look at some of the best last-minute flights available departing to Boulder. Prices refresh often so be sure to come back soon for more deals.

Sun 5/58:20 p.m.YYZ - DEN

1 stop14h 40mMultiple Airlines

Tue 7/53:19 p.m.DEN - YYZ

1 stop13h 16mMultiple Airlines

Deal found 27/4C$ 457

Sun 5/58:20 p.m.YYZ - DEN

1 stop14h 40mMultiple Airlines

Thu 9/59:55 a.m.DEN - YYZ

1 stop18h 40mMultiple Airlines

Deal found 27/4C$ 467

Fri 3/59:00 p.m.YYZ - DEN

1 stop14h 00mMultiple Airlines

Mon 6/510:56 p.m.DEN - YYZ

1 stop29h 39mMultiple Airlines

Deal found 27/4C$ 518

Fri 3/59:00 p.m.YYZ - DEN

1 stop14h 00mMultiple Airlines

Mon 6/510:56 p.m.DEN - YYZ

1 stop29h 39mMultiple Airlines

Deal found 27/4C$ 541

Sat 4/56:15 p.m.YTZ - DEN

1 stop7h 01mMultiple Airlines

Sat 11/59:27 p.m.DEN - YTZ

1 stop11h 55mMultiple Airlines

Deal found 27/4C$ 548

Sat 4/56:15 p.m.YTZ - DEN

1 stop7h 01mMultiple Airlines

Sat 11/55:14 p.m.DEN - YTZ

1 stop16h 08mMultiple Airlines

Deal found 27/4C$ 552

Fri 3/510:40 a.m.YYZ - DEN

2 stops25h 40mMultiple Airlines

Mon 6/511:20 a.m.DEN - YYZ

3 stops30h 15mMultiple Airlines

Deal found 27/4C$ 574

Sat 4/56:00 a.m.YYZ - DEN

1 stop11h 15mAmerican Airlines

Mon 13/56:44 a.m.DEN - YYZ

1 stop13h 36mAmerican Airlines

Deal found 27/4C$ 596

Sat 4/54:17 p.m.YYZ - DEN

1 stop6h 37mAmerican Airlines

Sat 11/56:02 a.m.DEN - YYZ

1 stop8h 27mAmerican Airlines

Deal found 27/4C$ 597

One-way flights to Boulder

If you're looking for options on one-way flights to Boulder, check out these fares. Users can also find round-trip Boulder flights by using the search form above.

Sat 1/62:40 p.m.YYZ - DEN

1 stop8h 52mMultiple Airlines

Deal found 27/4C$ 202

Tue 7/58:20 p.m.YYZ - DEN

1 stop17h 18mMultiple Airlines

Deal found 27/4C$ 230

Thu 30/58:20 p.m.YYZ - DEN

1 stop13h 38mMultiple Airlines

Deal found 27/4C$ 242

Tue 8/1012:20 p.m.YYZ - DEN

1 stop10h 14mMultiple Airlines

Deal found 27/4C$ 254

Sun 26/52:40 p.m.YYZ - DEN

2 stops20h 20mMultiple Airlines

Deal found 27/4C$ 262

Mon 13/58:00 p.m.YYZ - DEN

1 stop19h 45mMultiple Airlines

Deal found 27/4C$ 268

Sun 5/58:20 p.m.YYZ - DEN

1 stop14h 40mMultiple Airlines

Deal found 27/4C$ 271

Thu 9/58:20 p.m.YYZ - DEN

1 stop17h 19mMultiple Airlines

Deal found 27/4C$ 277

Sat 1/67:45 a.m.YYZ - DEN

2 stops11h 10mMultiple Airlines

Deal found 27/4C$ 290

Direct flights to Boulder

Fri 24/58:15 a.m.YYZ - DEN

Nonstop3h 41mAir Canada

Tue 28/55:32 p.m.DEN - YYZ

Nonstop3h 16mAir Canada

Deal found 27/4C$ 622

Fri 10/57:00 a.m.YYZ - DEN

Nonstop3h 55mMultiple Airlines

Sun 12/57:45 a.m.DEN - YYZ

Nonstop3h 13mMultiple Airlines

Deal found 26/4C$ 631

Wed 12/68:15 a.m.YYZ - DEN

Nonstop3h 41mAir Canada

Wed 26/67:45 a.m.DEN - YYZ

Nonstop3h 08mAir Canada

Deal found 27/4C$ 634

Sun 19/57:00 a.m.YYZ - DEN

Nonstop3h 55mAir Canada

Sat 25/57:45 a.m.DEN - YYZ

Nonstop3h 13mAir Canada

Deal found 27/4C$ 636

Mon 27/58:15 a.m.YYZ - DEN

Nonstop3h 41mAir Canada

Fri 7/67:45 a.m.DEN - YYZ

Nonstop3h 13mAir Canada

Deal found 26/4C$ 641

Sat 1/64:18 p.m.YYZ - DEN

Nonstop3h 40mAir Canada

Tue 4/65:32 p.m.DEN - YYZ

Nonstop3h 16mAir Canada

Deal found 27/4C$ 645

Mon 17/68:15 a.m.YYZ - DEN

Nonstop3h 41mAir Canada

Wed 17/75:32 p.m.DEN - YYZ

Nonstop3h 16mAir Canada

Deal found 27/4C$ 662

Sun 30/68:15 a.m.YYZ - DEN

Nonstop3h 41mAir Canada

Mon 8/75:32 p.m.DEN - YYZ

Nonstop3h 16mAir Canada

Deal found 27/4C$ 672

Thu 4/77:00 a.m.YYZ - DEN

Nonstop3h 42mAir Canada

Sat 6/711:15 a.m.DEN - YYZ

Nonstop3h 08mAir Canada

Deal found 27/4C$ 689

Average price of flights to Boulder by month

Currently, January is the cheapest month in which you can book a flight to Boulder (average of C$ 395). Flying to Boulder in July will prove the most costly (average of C$ 507). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

January

C$ 540

February

C$ 599

March

C$ 601

April

C$ 600

May

C$ 637

June

C$ 642

July

C$ 693

August

C$ 678

September

C$ 634

October

C$ 590

November

C$ 578

December

C$ 552

Temperature and rainfall in Boulder by month

DEN Temperature	-1 - 23 °C

DEN

Temperature

-1 - 23 °C

If weather is an important factor for your trip to Boulder, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).

When is the best time to book a flight to Boulder?

Booking 47 days in advance of your planned departure date is, on average, the best time to get cheap flights to Boulder. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Search Deals

When is the cheapest time to fly to Boulder?

Morning

Noon

Afternoon

Evening

All times are departure.

Users looking for the lowest fares to Boulder should consider flying on Friday evenings, when prices are typically cheapest. Budget-minded travellers will want to avoid Thursday at noon, when prices are usually at their highest.

Search Deals

Reviews of airlines servicing Boulder

To help decide which airline to fly to Boulder, see what other customers have to say about Delta, Air Canada and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.1

Very good

9,110 reviews

Check prices

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Alaska Airlines

8.1

Very good

9,110 reviews

Alaska Airlines

8.1

Very good

9,110 reviews

Check prices

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Delta

8.1

Very good

10,932 reviews

Alaska Airlines

8.1

Very good

9,110 reviews

Check prices

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

WestJet

7.5

Good

2,977 reviews

Alaska Airlines

8.1

Very good

9,110 reviews

Check prices

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

United Airlines

7.4

Good

11,221 reviews

Alaska Airlines

8.1

Very good

9,110 reviews

Check prices

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

American Airlines

7.3

Good

14,844 reviews

Alaska Airlines

8.1

Very good

9,110 reviews

Check prices

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Can I find cheaper flights to Boulder if I am willing to have layovers?
Yes, flights with layovers are often cheaper than direct flights. Keep an eye out for flight deals to Boulder on Cheapflights that require 1 or 2 stops for potential cost savings.
What is the best airline to fly to Boulder?
Based on reviews from Cheapflights users, WestJet is rated the highest out of the airlines that fly to Boulder.
What is the cheapest airport to fly to in Boulder?
null is currently the cheapest airport to fly to in Boulder. One-way flights to null typically cost null, while round-trip flights cost around null.
How much is a round-trip flight to Boulder?
A round-trip flight to Boulder will typically cost around C$ 163, however they can be found for as little as C$ 38.
Where does the fastest flight to Boulder depart from?
For those looking to save time traveling to Boulder, Calgary offers the quickest one-way flight (2 hours 26 minutes).
Does Denver Intl Airport have rental cars?
Yes. Those touching down at Denver Intl Airport can take advantage of the rental car services offered upon their arrival.
Are there hotels close to Denver Intl Airport?
Yes. Denver Intl Airport has hotels nearby for those requiring accommodations. The Westin Denver International Airport is the closest property to Denver Intl Airport (0.0 km away from Denver Intl Airport).

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Fly your favourite airline to Boulder
Fly your favourite airline to Boulder. Flight routes are based on user searches made on Cheapflights and were last updated on 28 April 2024.

Air Canada flights from Pearson Intl to Denver

Air Canada flights from Toronto to Denver

United Airlines flights from Toronto to Denver

United Airlines flights from Pearson Intl to Denver

Popular United States flight routes
Browse through the most popular flight routes to the United States at this time.

Flights to Asheville

Flights to Munich

Flights to Lake Louise

Flights to San Francisco

Flights to Sofia

Flights to Philippines

Flights to South Padre Island

Flights to Florida

Flights to Arrecife

Flights to Lofoten & Vesterålen

Flights to Japan

Flights to Hamilton, Pembroke

Search flights to Boulder by cabin class

First Classfrom C$ 1,528/person

Business Classfrom C$ 935/person

Prem Econ Classfrom C$ 1,262/person

Economy Classfrom C$ 211/person

Book a flight to one of these trending destinations

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

View all available airlines

Cheap flights to Boulder from C$ 202

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.

Flights to Boulder in 2024

Find the latest flights to Boulder in 2024, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 504,135 searches and data was last updated on 28 April 2024.

Popular in

Cheapest in

Average price

Round-trip from

One-way from

Cheap flights to Boulder in April & May 2024

Discover affordable flights and deals to Boulder in April and May 2024. In the last 7 days, Cheapflights users made a total of 504,135 searches and data was last updated on 28 April 2024.

The below flights offer some of the lowest fares to Boulder in April and May 2024. Check back soon for alternative prices as deals update often.

Boulder 2024 flight deals

Explore flight deals for Boulder in 2024, offering the best prices and options to suit your preferences. In the last 7 days, Cheapflights users made a total of 504,135 searches and data were last updated on 28 April 2024.

These are some of the most attractive deals on flights to Boulder in 2024. Check back in a little while for more flight options.

Flights to Boulder departing soon

Discover available last-minute flight options to Boulder, providing immediate availability and potentially lower prices. In the last 7 days, Cheapflights users made a total of 504,135 searches and data was last updated on 28 April 2024.

Have a look at some of the best last-minute flights available departing to Boulder. Prices refresh often so be sure to come back soon for more deals.

One-way flights to Boulder

Explore one-way flight options to Boulder for greater flexibility in your travel plans. Find up-to-date pricing and availability for one-way flights. In the last 7 days, Cheapflights users made a total of 504,135 searches and data was last updated on 28 April 2024.

If you're looking for options on one-way flights to Boulder, check out these fares. Users can also find round-trip Boulder flights by using the search form above.

Direct flights to Boulder

Average price of flights to Boulder by month

Plan your trip to Boulder by taking into account the cheapest months to travel. The average price of a one-way flight to Boulder is currently C$ 255 while a round-trip flight costs C$ 483. Price data was last updated on 21 April 2024.

Temperature and rainfall in Boulder by month

Plan your trip to Boulder by taking into account the average temperature and rainfall totals by month.

When is the best time to book a flight to Boulder?

Use this chart to determine the optimal time to book a round-trip flight to Boulder. Price data was last updated on 28 January 2024.

Booking 47 days in advance of your planned departure date is, on average, the best time to get cheap flights to Boulder. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

When is the cheapest time to fly to Boulder?

Use this chart to determine the cheapest time to fly round-trip to Boulder. Price data was last updated on 21 April 2024.

Reviews of airlines servicing Boulder

To help decide which airline to fly to Boulder, see what other customers have to say about Delta, Air Canada and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Can I find cheaper flights to Boulder if I am willing to have layovers?

What is the best airline to fly to Boulder?

What is the cheapest airport to fly to in Boulder?

How much is a round-trip flight to Boulder?

Where does the fastest flight to Boulder depart from?

Does Denver Intl Airport have rental cars?

Are there hotels close to Denver Intl Airport?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly your favourite airline to BoulderFly your favourite airline to Boulder. Flight routes are based on user searches made on Cheapflights and were last updated on 28 April 2024.

Fly your favourite airline to Boulder. Flight routes are based on user searches made on Cheapflights and were last updated on 28 April 2024.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2024

Search flights to Boulder by cabin class

Find flights to Boulder, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations

100% Free

Book with Flexibility

Travel Smart

Fly your favourite airline to Boulder
Fly your favourite airline to Boulder. Flight routes are based on user searches made on Cheapflights and were last updated on 28 April 2024.