Find flights
When to book
FAQs & Tips
Airlines
Deals

Find cheap flights to Boulder from C$ 186

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 24/4. 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
Sat 27/4
Sat 4/5

Search hundreds of travel sites at once for deals on flights to Boulder

In the last 7 days, travellers have searched 47,584,047 times on KAYAK, and here is why:

Save 17% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Good to know

Low season

January

High season

July

Cheapest flight

C$ 186
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 Vancouver to Denver

FAQs - booking Boulder flights

  • How long is the flight to Boulder?

    Flights from Edmonton2h 50m
    Flights from Montreal4h 02m
    Flights from Vancouver2h 56m
    Flights from Toronto3h 30m
    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$ 253 one-way, and C$ 505 round-trip on the route from Vancouver 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$ 442 round-trip.

  • 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 KAYAK reviews.
8.8
Endeavor AirlinesOverall score based on 4 reviews
90overall
95comfort
95boarding
95crew
70entertainment
85food
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"
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"

Seats were broken in premium select and so was monitored on my seat and other people around me

Carly the flight attendant was extremely helpful and very accommodating to passengers on the flight from what I noticed. Couldn't be more satisfied with the service and assistance from Delta's flight attendant, Thanks again Carly!!

I didn’t not like that I could not select my seat and ended up with the worse seat.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Delta did an awful job w logistics at DTW. Missed connection. We were there an hour early. SUCKED

Inflight entertainment stopped working as we taxi to runway and never worked again until landing and taxi to gate. Grrrr

Flight and gate staff were great as usual. Inflight entertainment did not work. Was watching a movie while at gate. Screen went blank once started to taxi to runway and never came back on until landing and taxi to terminal. Grrrr flight attendants were too busy to bother them. All seats around me were working fine that I could see.

Had to run to make it only to have the flight delayed to wait for all the late connectors Second drink service skipped up

Boarding was a sh!t show. JFK BOARDING was awful. The agent called three sections at a time Clogging the area then yelling at people to not block the walk way. How are you going to call delta one , premium select and comfort plus at once and the yell at highest paying passengers. Need to do a lot better and the flight attendants in the galley need to understand that their voices travel. They were talking about others and everyone in the cabin heard them

Uncomfortable seats on 14 hour flight. Mediocre food. On time and great crew.

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!

They could Isaac's announced our gate at Atlanta. Whet we arrived at the gate he thought we were joking and we didn't board. The plane left without us

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.

By in large it was a good experience. The flight crew was great and that's the most important to me. Boarding was fine.

It was fine. Everything ran on time, crew was great.

There is no food or entertainment on these short flights. Again the wheelchair situation in Denver is nasty. They are short staffed due to cut backs and layoffs and this impacts on travel comfort and ease.

The boarding process in Toronto bad as they share space with domestic flights and when those domestic flights come in you are locked out behind closed doors until they are done and then its a mad rush to get your boarding gates and board. This is not so much due to Air Canada but with the GTAA, but Air Canada could use different gates especially early morning in order to prevent such travel angst.

There was no food or entertainment on this flight. Great flight crew though

Terrible quality wifi and they charge a lot for it. They nickel and dime you for everything.

Not happy with Air Canada . Flight was cancelled got the run around trying to get another flight that was direct none to be found ended up going to Denver then onto Austin adding 7 hours to our trip. Was travelling with some one who had walking issues that’s why we were happy to have a direct flight then it didn’t happen adding more stress on her

I wish there had been more seat options...when I tried to book, there were only.middle seats available. Do travel agents get first pick??

As is pretty much the norm with Air Canada now, we left late from the gate (45 minutes late). This is my 12th flight with AC in the last 12 months and 10 of those flights were either late or cancelled. AC essentially has a monopoly in Canada so they have carte blanche to charge exorbitant rates now and give poor service, with no repercussions.

A 2 hour delay because they couldn’t fit some oversized cargo in the small hold doors of an Embraer! Surely they know the sizes before attempting to load it?

It took 5 hour to get a crew to D Ice the plan. We had to sit on the runway for 5 hrs. in Calgary. It snows most of the winter. No proactive plan. In addition, after 3 calls to customer service they couldn't figure out how to have my wife and myself sit together on her birthday weekend. Everybody kept passing the buck. No decision from customer service, luggage drop off or check in team. The experience was a complete mess! I don't think we'll ever fly on this airline again.

When we got to the airport for our flight from Chicago to Montreal which was scheduled for 2.00 p.m. they had no record of it and booked us on a flight at 3.30 very disappointing . We also had to pay 50.00 each for a seat. All things considered ,I will never book thru Kayak again. Next time I will only book directly thru Air Canada no second party booking Sue

Book Cheap Boulder Plane Tickets

Recent round-trip flight deals

23/4Tue
1 stop
7h 24mYVR-DEN
30/4Tue
1 stop
20h 54mDEN-YVR
C$ 372
23/4Tue
1 stop
7h 24mYVR-DEN
30/4Tue
2 stops
11h 08mDEN-YVR
C$ 390
24/4Wed
1 stopAir Canada
6h 16mYYC-DEN
4/5Sat
1 stopAir Canada
7h 56mDEN-YYC
C$ 427
17/7Wed
directWestJet
2h 32mYYC-DEN
31/7Wed
directWestJet
2h 27mDEN-YYC
C$ 439
25/4Thu
1 stopAir Canada
7h 46mYYC-DEN
2/5Thu
1 stopAir Canada
7h 56mDEN-YYC
C$ 446
27/4Sat
1 stopDelta
4h 50mYVR-DEN
8/5Wed
1 stopDelta
7h 20mDEN-YVR
C$ 461
22/5Wed
directWestJet
2h 35mYYC-DEN
29/5Wed
directWestJet
2h 31mDEN-YYC
C$ 477
8/6Sat
2 stopsDelta
11h 24mYVR-DEN
11/6Tue
1 stopDelta
9h 23mDEN-YVR
C$ 484
24/4Wed
directUnited Airlines
2h 33mYYC-DEN
4/5Sat
directUnited Airlines
2h 29mDEN-YYC
C$ 586
17/5Fri
directUnited Airlines
3h 55mYYZ-DEN
21/5Tue
directUnited Airlines
3h 13mDEN-YYZ
C$ 586

Search by stops

Search by airline

Search by price

Recent one-way flight deals

24/4Wed
1 stop
11h 49mYVR-DEN
C$ 186
29/4Mon
1 stop
16h 44mYWG-DEN
C$ 212
22/5Wed
directWestJet
2h 35mYYC-DEN
C$ 232
22/5Wed
directUnited Airlines
2h 33mYYC-DEN
C$ 246
11/4Thu
1 stopAir Canada
6h 16mYYC-DEN
C$ 249
11/4Thu
1 stopAir Canada
7h 06mYYC-DEN
C$ 254
8/7Mon
2 stopsWestJet
8h 02mYWG-DEN
C$ 268
25/4Thu
1 stopDelta
4h 53mYVR-DEN
C$ 281
30/4Tue
1 stopDelta
6h 38mYWG-DEN
C$ 285
25/4Thu
directUnited Airlines
4h 20mYUL-DEN
C$ 376

Search by stops

Search by airline

Search by price

Last minute flights to Boulder

Last minute flight, train and bus deals

1/4Mon
multi-stop
24h 10mYYZ-DEN
3/4Wed
multi-stop
13h 58mDEN-YYZ
C$ 715
1/4Mon
multi-stop
24h 10mYYZ-DEN
2/4Tue
multi-stop
15h 38mDEN-YYZ
C$ 738
29/3Fri
directAir Canada
3h 54mYYZ-DEN
1/5Wed
directAir Canada
3h 13mDEN-YYZ
C$ 959
29/3Fri
multi-stopAir Canada
9h 22mYYZ-DEN
1/5Wed
directAir Canada
3h 14mDEN-YYZ
C$ 966
1/4Mon
multi-stopWestJet
13h 09mYEG-DEN
31/5Fri
multi-stopWestJet
18h 19mDEN-YEG
C$ 967
1/4Mon
multi-stopWestJet
10h 55mYEG-DEN
31/5Fri
multi-stopWestJet
15h 59mDEN-YEG
C$ 969
29/3Fri
multi-stopDelta
7h 53mYUL-DEN
10/4Wed
multi-stopDelta
7h 57mDEN-YUL
C$ 1,046
29/3Fri
multi-stopDelta
9h 35mYUL-DEN
1/4Mon
multi-stopDelta
16h 49mDEN-YUL
C$ 1,073
28/3Thu
directUnited Airlines
4h 10mYYZ-DEN
5/4Fri
multi-stopUnited Airlines
5h 26mDEN-YYZ
C$ 1,269
29/3Fri
directUnited Airlines
4h 10mYYZ-DEN
6/4Sat
directUnited Airlines
3h 14mDEN-YYZ
C$ 1,340

Search by stops

Search by airline

Search by price

Flights to Boulder

Browse origins:

Browse destinations: