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Find cheap flights to Boulder from C$ 182

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Boulder departing on 24/6. 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.
1 adult
0 bags
Fri 31/5
Fri 7/6

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Good to know

Low season

January

High season

July

Cheapest flight

C$ 182
Best time to beat the crowds (3% less expensive on average)
Most popular time to fly and prices are also 1% lower on average.
Flight from Calgary to Denver

FAQs - booking Boulder flights

  • How long is the flight to Boulder?

    Flights from Edmonton2h 47m
    Flights from Montreal3h 59m
    Flights from Vancouver2h 55m
    Flights from Toronto3h 29m
    Flights from Calgary2h 30m
  • What is the cheapest flight to Denver?

    The cheapest airline ticket to Denver from Canada in the last 72 hours was C$ 250 one-way, and C$ 454 round-trip on the route from Calgary to Denver. The most popular route is from Toronto to Denver and the cheapest ticket found on this route in the last 72 hours was C$ 332 round-trip.

  • Which airlines fly to Denver?

    In general from Canada, United Airlines, Air Canada and WestJet fly the most to Denver. See the amount of flights per week for popular airlines flying to Denver.

  • How to fly to Boulder?

    You cannot fly directly to Boulder. KAYAK recommends you fly to Denver Intl (DEN) (53.76 km from Boulder). From there you can rent a car or get a taxi.

  • What airports are near Boulder?

    The closest airport is Loveland Northern Colorado (FNL) (53.26 km). Other nearby airports are Denver Intl (DEN) (53.76 km) or Colorado Springs (COS) (142.97 km). KAYAK recommends you fly to Denver Intl.

  • How far is Denver from central Denver?

    There are 30 km between Denver downtown and Denver.

  • What is the name of Denver’s airport?

    When flying to Denver, you'll arrive at Denver (DEN). The airport is also known as Denver or Denver Intl.

  • How does KAYAK find such low prices on flights to Boulder?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Boulder.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Boulder?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boulder is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Boulder?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boulder with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Boulder?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boulder up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Boulder

  • There is no major airport in Boulder. It is instead served by Denver Intl Airport.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Boulder flight deals.

Top 5 airlines flying to Boulder

 
Need help choosing which airline to fly with from Canada to Boulder? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.8
Endeavor AirlinesOverall score based on 4 reviews
9.5Comfort
7.0Entertainment
8.5Food
9.5Boarding
9.5Crew
Airline reviews
Pros: "seat space was great and I was lucky enough to have medium size passenger next to me :-)"
Cons: "Can't really think of anything . . . my expectations were exceeded"
8.6 ExcellentIllan, Jun. 2019YYZ - JFK
Read more about Endeavor Airlines reviews
Pros: "seat space was great and I was lucky enough to have medium size passenger next to me :-)"
Cons: "Can't really think of anything . . . my expectations were exceeded"

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

The pilots were good. Disappointing when planes don't have electrical ports

I liked the piloting of the aircraft. Very disappointed about lack of electrical ports. Also, although a short flight. there was enough time to hand out snacks to comfort + seats as was done for first class.

I had a wonderful experience flying with delta. The gentleman taking care of us on our flight was so nice, accommodating, and attentive. He always was smiling and giving pins to the kids which made me smile. The flight was quick too and without turbulence. Thank you for the great flying experience.

Delta is one of the best airlines I have flown

Made the Atlanta to Pittsburgh trip many times, with Delta no issues

I always fly with Delta. My friends tell me their horror stories of flying with other airlines. I just smile and say, “You should fly Delta”

I'm a larger, athletic guy (6'2", 260lbs powerlifter) and I found the seats incredibly uncomfortable with minimal leg room, especially in a window seat. Now, I full understand that being smaller may change my view but even if I was 80lbs less, my legs would be the same size and I was sandwiched between my seat and the seat in front of me.

I wish that seats closer to the front of the plan were available, but when I booked the flight the seats were VERY expensive so I did not book seats at that time. The day before flying only seats at the back of the plane were available. It takes so long to board the plane and empty the plane on arrival due to SO many roller bags.

Good flight. No I’m seat entertainment. But my phone worked just fine on the west jet app.

I had planned to watch the Westjet entertainment for the entire flight however, because the seat mounted outlets in our row did not work.

Not a bad flight but our priority tagged luggage was the very last to come down the carousel.

Plane had a flat tire, delayed boarding and takeoff but one in the air, smooth. Make sure you have downloaded the WJ app before you leave. When on board, you can watch movies or TV shows offered on the app, it passed the time very quickly.

Our recent flight from edmontown to kahalui was excellent. The service staff was very friendly, knowledgeable, funny and attentive. Thanks to all involved that made or travel such a pleasant experience and we hope to fly with west jet again soon

The flight was delayed and I missed boarding my 7 day cruise. I had to book a separate flight home

No real issues just wasnt able to hear / understand any announcements flight attendant was making but everything else was really good- ended up checking my carry on case for free which made deboarding quicker. I would fly West Jet for all my flights.

Seats were comfortable and leg room was good. Slight delay for boarding but nothing too bad. Would fly with them again.

Long lines to board with only two staff checking boarding passes!

T hey did a great job. Flight was on time .

Positive: Entertainment via phone on the short was great and my first time. Good food and wine and head phones for free. Negative: Seat hardly reclined on the long flight. Breakfast was an egg with a bun. No egg choices and rather have something sweet like bun/jam and Youghurt.

They did get us booked on a later flight, but it made us miss our connecting flight. So, we had to stay and another state overnight with no luggage or clothes. Because they kept our luggage at airport for next flight on the next day.

Flight was on time. Staff were friendly. I paid for Economy Plus but was required to check my standard carry-on luggage due to lack of space on the aircraft. This cost me 30 minutes, unexpectedly, in waiting at the baggage claim. This experience did not meet my expectations.

Crew is way too many times on the intercom re explaining the same thing

Amazing comfortable chairs great snacks super friendly staff pilots did excellent job. Smooth sailing all the way. Definitely be flying United more.

We waited too long to get water while the plane was on the Tarmac awaiting de-icing.

Easy peasy. Crew was great. Take-off and landing nice anc chill (good job by the pilot). Thank you UA!

Excellent as always. Had issues checking-in online. Please fix.

The plane was delayed coming in and on the tarmac. I was coming from another flight so it made for a very long day. The stewardess kept trying to slam the overhead bins closed and I was worried that she had damaged my new luggage. They ran out of snacks and lccdsddd me a hummus box which was nice. It took them a very long time to pick up the garbage so I could not go to the washroom and had little time. To prepare for disbarment. The TV system was hard to control from the armrest and picture wasn’t clear. The crew did apologize several times for the lateness. It took the Denver airport an unusually long time to de-ice the plane.

I was appalled to have to pay for just a regular seat when I went to book 24 hrs before my flight! Because it was only an hour flight I didn’t choose a seat from Grand Junction to Denver, but I did for Toronto and had to pay just to choose a regular available seat! In my 60+ years of flying this was the first time I have heard of this. Also, allowing people to bring on “huge “ suitcases, not carry on size, but much bigger, and then a large pack pack stuffed. So they take up all the room in the overhead bins and if we are later boarding, there is no room so we have to check our small carry on. I have already paid for and checked in one bag! I certainly will not choose to fly with United again unless it is the “only” airline available!

on demand entertainment in seat back awesome Check in Kiosk too demanding with endless demand for more information information then says go to counter. Counter agent unfriendly. Do it yourself check in luggage procedure not intuitive, upset employees frustrated the whole procedure.

It was an excellent experience, traveling from Toronto to Denver with United.

Ontime boarding. Almost 1 hour take off delay. We could have boarded slightly later since the pilots were in traffic

Flight was delayed, I had to put my luggage all the way in the back! They served only a beverage no snack on the way in Air Canada, definitely not a good first impression.

Fresh fuit or veg snacks would be so great, but there are two good restaurants in Denver airport. Try Etais UDIS or Freshens DIA for nutritious delicious pita sandwiches/ donairs and crepes in Freshens.

Crowded plane but it flew on time and had friendly staff

Headphones for the movies have too much bass and can't be adjusted. Almost impossible to hear. Great movie selections but can't really watch them because you can't hear them. Also the system is very slow.

This was the first AC flight in a long time that we experienced no delays or frustrations. The gate attendant was extremely polite and accommodating to my husband who has Parkinson’s disease which made boarding extremely stress free. Flight departed ON TIME and was a smooth ride. If only all my AC experiences could be like this.

The Air Canada agent was very helpful helping with my luggage and cat carrier when I went there instead of United.

Book Cheap Boulder Plane Tickets

Recent round-trip flight deals

14/5Tue
1 stop
14h 40mYYZ-DEN
15/5Wed
1 stop
24h 46mDEN-YYZ
C$ 332
12/5Sun
1 stop
27h 41mYYZ-DEN
15/5Wed
1 stop
24h 46mDEN-YYZ
C$ 347
17/7Wed
1 stopWestJet
6h 17mYEG-DEN
24/7Wed
1 stopWestJet
6h 36mDEN-YEG
C$ 348
19/7Fri
2 stopsWestJet
8h 02mYWG-DEN
22/7Mon
1 stopWestJet
7h 52mDEN-YWG
C$ 396
30/5Thu
1 stopDelta
6h 08mYYC-DEN
6/6Thu
1 stopDelta
7h 49mDEN-YYC
C$ 413
9/6Sun
directDelta
2h 35mYYC-DEN
16/6Sun
1 stopDelta
6h 03mDEN-YYC
C$ 418
14/6Fri
1 stopAir Canada
5h 49mYYC-DEN
16/6Sun
1 stopAir Canada
7h 01mDEN-YYC
C$ 487
28/5Tue
directAir Canada
2h 39mYYC-DEN
4/6Tue
1 stopAir Canada
9h 26mDEN-YYC
C$ 527
11/5Sat
directUnited Airlines
2h 33mYYC-DEN
14/5Tue
directUnited Airlines
2h 29mDEN-YYC
C$ 534
24/5Fri
directUnited Airlines
2h 39mYYC-DEN
28/5Tue
directUnited Airlines
2h 28mDEN-YYC
C$ 558

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Recent one-way flight deals

24/6Mon
1 stop
21h 09mYYC-DEN
C$ 182
28/5Tue
1 stop
16h 13mYEG-DEN
C$ 182
6/6Thu
directWestJet
2h 35mYYC-DEN
C$ 193
21/5Tue
directAir Canada
2h 33mYYC-DEN
C$ 195
26/5Sun
1 stopAir Canada
5h 49mYYC-DEN
C$ 202
24/5Fri
1 stopWestJet
5h 20mYEG-DEN
C$ 206
14/6Fri
directDelta
2h 35mYYC-DEN
C$ 237
4/5Sat
1 stopDelta
5h 34mYYC-DEN
C$ 240
14/6Fri
directUnited Airlines
3h 42mYYZ-DEN
C$ 350
6/5Mon
1 stopUnited Airlines
16h 26mYVR-DEN
C$ 376

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Last minute flights to Boulder

Last minute flight, train and bus deals

3/5Fri
multi-stopDelta
9h 00mYYC-DEN
10/5Fri
multi-stopDelta
8h 12mDEN-YYC
C$ 444
5/5Sun
multi-stop
30h 38mYYZ-DEN
10/5Fri
multi-stop
23h 05mDEN-YYZ
C$ 450
4/5Sat
directAir Canada
2h 52mYVR-DEN
6/5Mon
directAir Canada
3h 00mDEN-YVR
C$ 490
4/5Sat
multi-stopAir Canada
5h 48mYVR-DEN
6/5Mon
directAir Canada
3h 00mDEN-YVR
C$ 498
3/5Fri
directUnited Airlines
2h 33mYYC-DEN
10/5Fri
directUnited Airlines
2h 29mDEN-YYC
C$ 617
5/5Sun
multi-stopUnited Airlines
7h 29mYUL-DEN
7/5Tue
multi-stopUnited Airlines
8h 12mDEN-YUL
C$ 683
1/5Wed
multi-stopAlaska Airlines
28h 45mYVR-DEN
3/5Fri
multi-stopAlaska Airlines
17h 20mDEN-YVR
C$ 1,198
1/5Wed
multi-stopWestJet
11h 57mYEG-DEN
11/5Sat
multi-stopWestJet
15h 05mDEN-YEG
C$ 1,246
3/5Fri
multi-stopWestJet
11h 25mYWG-DEN
6/5Mon
multi-stopWestJet
27h 18mDEN-YWG
C$ 1,258
5/5Sun
multi-stopAlaska Airlines
34h 49mYYZ-DEN
8/5Wed
multi-stopAlaska Airlines
34h 02mDEN-YYZ
C$ 2,369

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Flights to Boulder

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