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$99+ Cheap flights from Boston (BOS) to Colorado

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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — DEN
May 30 — Jun 61
Sat 5/30
Sat 6/6
1 adult, Economy
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Cheap flight deals from Boston to Colorado

Cheapest flights from Boston to Colorado
Explore the most affordable flight options available from Boston to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2026.

This American Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/94:06 pm
BOS
-
COS
1 stop8h 51m
American Airlines
Sat 9/128:00 am
COS
-
BOS
1 stop9h 42m
American Airlines
Deal found 4/30$209
This American Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/910:13 am
BOS
-
DEN
1 stop6h 53m
American Airlines
Tue 6/165:00 am
DEN
-
BOS
1 stop8h 16m
American Airlines
Deal found 4/25$211
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1211:15 am
BOS
-
DEN
Nonstop4h 48m
United Airlines
Sat 5/235:40 pm
DEN
-
BOS
Nonstop4h 04m
United Airlines
Deal found 4/26$212
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1211:15 am
BOS
-
DEN
Nonstop4h 48m
United Airlines
Wed 5/1311:59 pm
DEN
-
BOS
Nonstop4h 05m
United Airlines
Deal found 4/27$213
This American Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/135:54 pm
BOS
-
DEN
1 stop7h 51m
American Airlines
Tue 5/1911:59 pm
DEN
-
BOS
1 stop8h 02m
American Airlines
Deal found 4/28$214
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/112:01 pm
BOS
-
DEN
1 stop23h 04m
Frontier
Wed 6/109:58 am
DEN
-
BOS
1 stop13h 29m
Frontier
Deal found 4/27$215
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/99:10 am
BOS
-
DEN
2 stops14h 34m
Frontier
Tue 6/166:30 am
DEN
-
BOS
1 stop23h 22m
Frontier
Deal found 4/28$217
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:00 am
BOS
-
DEN
1 stop18h 24m
Frontier
Wed 6/36:03 am
DEN
-
BOS
2 stops17h 21m
Frontier
Deal found 4/27$218
This Southwest deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/35:35 am
BOS
-
DEN
Nonstop4h 30m
Southwest
Fri 6/57:05 pm
DEN
-
BOS
Nonstop3h 55m
Southwest
Deal found 4/28$219
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/112:01 pm
BOS
-
DEN
1 stop12h 23m
Frontier
Tue 6/96:03 am
DEN
-
BOS
1 stop27h 02m
Frontier
Deal found 4/26$220
This Kiwi.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/29:12 am
BOS
-
DEN
1 stop15h 12m
Frontier
Sat 6/611:54 pm
DEN
-
BOS
1 stop29h 55m
Frontier
Deal found 4/30$221
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1211:15 am
BOS
-
DEN
Nonstop4h 48m
United Airlines
Sun 5/1711:59 pm
DEN
-
BOS
Nonstop4h 05m
United Airlines
Deal found 4/28$222

Find flight deals from Boston to Colorado

Keep the following information in mind while searching for Boston to Colorado flight deals. Data was last updated April 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$209
(American Airlines)

One-way from

$99
(American Airlines)

Popular in

February

Cheapest in

November

Average price

$337

Good round-trip deal

$302 or less

Good one-way deal

$193 or less
Provider with most accurate pricing for Boston Logan Intl-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Denver Intl flights.
Search Deals
From Boston Logan Intl to Colorado
Search Deals
One-way flight from Boston Logan Intl to Colorado
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($13 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from Boston Logan Intl to Colorado.
Search Deals
Price to beat on a one-way flight from Boston Logan Intl to Colorado.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Colorado that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 30, 2026.
Use the filters below to find and compare flights from Boston to Colorado that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Thu 5/21

10:45 am-1:25 pm

Nonstop4h 40m

Denver Intl

Mon 5/25

2:20 pm-8:19 pm

Nonstop3h 59m

$227
Quickest round-trip

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Tue 6/9

5:00 am-7:25 am

Nonstop4h 25m

Denver Intl

Sat 6/13

6:45 pm-12:35 am

Nonstop3h 50m

$234

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Wed 7/8

7:27 pm-12:30 am

1 stop7h 03m

Denver Intl

Tue 7/14

11:59 pm-5:58 am

Nonstop3h 59m

$245

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Tue 5/19

7:00 am-12:12 pm

1 stop7h 12m

Denver Intl

Sat 5/23

5:40 pm-11:44 pm

Nonstop4h 04m

$247

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Fri 6/5

8:05 pm-12:53 am

1 stop6h 48m

Denver Intl

Tue 6/9

5:40 pm-11:44 pm

Nonstop4h 04m

$247

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Wed 5/13

7:40 am-10:20 am

Nonstop4h 40m

Denver Intl

Wed 5/20

11:30 am-5:35 pm

Nonstop4h 05m

$267

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Tue 6/16

5:00 am-7:25 am

Nonstop4h 25m

Denver Intl

Tue 6/23

6:55 pm-12:45 am

Nonstop3h 50m

$274

BostonColorado Springs

BOS - COS

BOSCOS

Boston Logan Intl

Tue 9/1

4:20 pm-9:15 pm

1 stop6h 55m

Colorado Springs

Wed 9/16

1:40 pm-1:06 am

1 stop9h 26m

$277

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Sun 6/7

5:15 am-7:40 am

Nonstop4h 25m

Denver Intl

Wed 6/10

6:55 pm-12:45 am

Nonstop3h 50m

$282

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Thu 7/23

6:50 pm-11:55 pm

1 stop7h 05m

Denver Intl

Mon 7/27

7:05 pm-1:00 am

Nonstop3h 55m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from Boston to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boston to Colorado

How far ahead should I book a flight from Boston to Colorado?

The best time to book flights from Boston to Colorado is 75 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Boston to Colorado?

Currently, January is the cheapest month in which you can book a flight from Boston to Colorado (average of $282). Flying from Boston to Colorado in February is currently the most expensive (average of $445). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOS to CO?

Find hourly flight availability from Boston to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 30, 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 26% on flights from Boston to Colorado by exploring options for tickets in the evening.

What is the cheapest day to fly from Boston to Colorado?

Use this chart to determine the cheapest time to fly round-trip from Boston to Colorado. Price data was last updated on April 25, 2026.

Travelers seeking maximum savings on their Boston to Colorado flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Boston to Colorado

Explore weekly flight availability from Boston to Colorado. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 30, 2026.

The most flights from BOS to USCO are scheduled on a Wednesday (17 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (1 on average).

How much does it cost to fly round-trip from Boston to Colorado?

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Colorado. Reviews last updated April 30, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Boston to Colorado. 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.
Southwest
8.0
Very good
4,314 reviews

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,314 reviews
Southwest
8.0
Very good
4,314 reviews

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,463 reviews
Southwest
8.0
Very good
4,314 reviews

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,677 reviews
Southwest
8.0
Very good
4,314 reviews

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
JetBlue
7.2
Good
2,968 reviews
Southwest
8.0
Very good
4,314 reviews

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,681 reviews
Southwest
8.0
Very good
4,314 reviews

Food

7.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

Find useful and relevant information for your journey from Boston to Colorado. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Boston to Colorado?

    Boston Logan Intl (BOS) is the airport you will fly out of if you book a flight from Boston to Colorado. It is only a 2.6 mi journey to Logan Intl (BOS) from Boston’s city center.

  • How popular is this Boston to Colorado flight route?

    This flight path from Boston Logan Intl to Colorado was viewed by 92 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Boston to Colorado?

    For as low as $234, JetBlue can have you in Colorado from Boston in 4h 25m. There are 1748 mi between Boston and Colorado. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Boston to Colorado one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $73. Users have also found prices from $93 and $93 on JetBlue and American Airlines, respectively.

  • What are the most popular routes from Boston to Colorado?

    When deciding which route to take from Boston to Colorado consider Boston Logan Intl - Denver Intl, Boston Logan Intl - Colorado Springs or Boston Logan Intl - Montrose County as they are the most popular.

  • What are the most reliable airlines from Boston to Colorado?

    Before booking your flight to Colorado from Boston, check out the most reliable airlines to get you to your destination on time: EL AL (92%), United Airlines (88%), Delta( 82%).

  • What are the cheapest flights from Boston to Colorado?

    Looking for the cheapest flight from Boston to Colorado? While on average our users pay $717, our data indicates the cheapest price to be $103. The most popular route (Boston Logan Intl - Denver Intl), is priced around $186.

  • Can I find deals for flights from Boston to Colorado that include hotel bookings?

    Yes. In addition to deals on Boston to Colorado flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Colorado?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Colorado.

  • Can I find deals for business class flights from Boston to Colorado?

    Yes. Cheapflights offers flight deals from Boston to Colorado by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to Colorado?

    Currently, January is the cheapest month in which you can book a flight from Boston to Colorado (average of $282). Flying from Boston to Colorado in February is currently the most expensive (average of $445). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for Boston to Colorado

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Top 7 airlines flying from Boston to Colorado

Discover the top 7 airlines that operate flights from Boston to Colorado. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$95Average$257FlexibilityNo cancel feeOn-time62%
DeltaCheapest$109Average$332FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$133Average$370FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$175Average$462FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$190Average$480FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$196Average$498FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$255Average$331FlexibilityNo cancel feeOn-time75%

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