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$101+ 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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — DEN
Jun 27 — Jul 41
Sat 6/27
Sat 7/4
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 May 28, 2026.

This American Airlines deal was found by Cheapflights users on 5/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/99:29 am
BOS
-
COS
1 stop9h 00m
American Airlines
Sat 9/128:00 am
COS
-
BOS
1 stop7h 32m
American Airlines
Deal found 5/27$209
This Cheapflightsfares deal was found by Cheapflights users on 5/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/66:45 pm
BOS
-
DEN
Nonstop4h 50m
JetBlue
Tue 6/910:34 pm
DEN
-
BOS
Nonstop3h 53m
JetBlue
Deal found 5/23$217
This CheapOair deal was found by Cheapflights users on 5/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/37:59 pm
BOS
-
DEN
Nonstop4h 43m
Multiple Airlines
Sun 7/56:00 am
DEN
-
BOS
1 stop25h 09m
Multiple Airlines
Deal found 5/23$218
This CheapOair deal was found by Cheapflights users on 5/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/42:20 pm
BOS
-
DEN
Nonstop4h 44m
JetBlue
Sun 11/86:00 pm
DEN
-
BOS
Nonstop3h 51m
JetBlue
Deal found 5/26$219
This Mytrip deal was found by Cheapflights users on 5/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1010:04 am
BOS
-
DEN
1 stop24h 03m
Frontier
Sun 7/126:00 am
DEN
-
BOS
1 stop25h 09m
Frontier
Deal found 5/25$220
This Southwest deal was found by Cheapflights users on 5/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/95:00 am
BOS
-
DEN
Nonstop4h 25m
Southwest
Sat 6/136:45 pm
DEN
-
BOS
Nonstop3h 50m
Southwest
Deal found 5/25$222
This Priceline deal was found by Cheapflights users on 5/23. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/68:40 am
BOS
-
DEN
1 stop7h 52m
Multiple Airlines
Tue 6/910:34 pm
DEN
-
BOS
Nonstop3h 53m
Multiple Airlines
Deal found 5/23$223
This CheapOair deal was found by Cheapflights users on 5/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:00 am
BOS
-
DEN
1 stop9h 59m
Multiple Airlines
Wed 9/211:37 pm
DEN
-
BOS
Nonstop3h 53m
Multiple Airlines
Deal found 5/26$225
This CheapOair deal was found by Cheapflights users on 5/24. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1611:52 am
BOS
-
DEN
1 stop12h 13m
Frontier
Tue 7/216:03 am
DEN
-
BOS
1 stop27h 01m
Frontier
Deal found 5/24$226
This JetBlue deal was found by Cheapflights users on 5/27. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/911:20 am
BOS
-
DEN
Nonstop4h 35m
JetBlue
Sat 7/1111:37 pm
DEN
-
BOS
Nonstop3h 53m
JetBlue
Deal found 5/27$227
This Travelocity deal was found by Cheapflights users on 5/26. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:00 am
BOS
-
DEN
1 stop9h 59m
Multiple Airlines
Tue 8/2511:37 pm
DEN
-
BOS
Nonstop3h 53m
Multiple Airlines
Deal found 5/26$228
This American Airlines deal was found by Cheapflights users on 5/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:30 am
BOS
-
DEN
1 stop9h 59m
American Airlines
Mon 8/2411:59 pm
DEN
-
BOS
1 stop8h 36m
American Airlines
Deal found 5/26$229

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 May 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$214
(Southwest)

One-way from

$101
(Southwest)

Popular in

June

Cheapest in

November

Average price

$355

Good round-trip deal

$342 or less

Good one-way deal

$195 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. 4% potential increase in price ($14 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 May 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 May 28, 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

Fri 6/12

8:39 pm-11:26 pm

Nonstop4h 47m

Denver Intl

Tue 6/16

6:00 am-2:02 pm

1 stop6h 02m

$247
Quickest round-trip

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Tue 8/18

11:00 am-3:37 pm

1 stop6h 37m

Denver Intl

Mon 8/24

5:47 pm-11:54 pm

Nonstop4h 07m

$262

BostonColorado Springs

BOS - COS

BOSCOS

Boston Logan Intl

Wed 7/22

5:55 am-10:27 am

1 stop6h 32m

Colorado Springs

Sun 7/26

6:16 pm-6:05 am

1 stop9h 49m

$297

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Thu 8/20

5:50 am-11:25 am

2 stops7h 35m

Denver Intl

Tue 8/25

2:20 pm-10:10 pm

1 stop5h 50m

$302

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Sun 6/14

7:59 pm-10:42 pm

Nonstop4h 43m

Denver Intl

Wed 6/17

2:08 pm-11:59 pm

1 stop7h 51m

$327

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Tue 8/18

2:45 pm-10:59 pm

1 stop10h 14m

Denver Intl

Fri 8/21

11:37 pm-5:30 am

Nonstop3h 53m

$327

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Sat 7/18

6:45 pm-11:20 pm

1 stop6h 35m

Denver Intl

Sat 8/1

5:30 am-4:05 pm

1 stop8h 35m

$347

BostonColorado Springs

BOS - COS

BOSCOS

Boston Logan Intl

Wed 6/17

5:55 am-10:30 am

1 stop6h 35m

Colorado Springs

Wed 7/8

1:40 pm-1:20 am

1 stop9h 40m

$348

BostonMontrose

BOS - MTJ

BOSMTJ

Boston Logan Intl

Mon 6/8

6:00 am-11:43 am

1 stop7h 43m

Montrose County

Sat 6/13

1:40 pm-11:44 pm

1 stop8h 04m

$349

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Sat 6/13

5:10 am-11:20 am

1 stop8h 10m

Denver Intl

Tue 6/16

7:40 am-6:00 pm

2 stops8h 20m

$352

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/27

Showing 1-10 of 60 resultsSorted by cheapest first
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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

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 $284). 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 May 28, 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 24% on flights from Boston to Colorado by exploring options for tickets in the evening.

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 May 28, 2026.

The most flights from BOS to USCO are scheduled on a Wednesday (19 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 on average).

How much does it cost to fly round-trip 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 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 May 23, 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.

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 May 28, 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
7.9
Good
4,265 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

7.9

Crew

8.6

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
7.9
Good
4,265 reviews
Southwest
7.9
Good
4,265 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

7.9

Crew

8.6

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
8,423 reviews
Southwest
7.9
Good
4,265 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

7.9

Crew

8.6

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
9,749 reviews
Southwest
7.9
Good
4,265 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

7.9

Crew

8.6

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
11,639 reviews
Southwest
7.9
Good
4,265 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

7.9

Crew

8.6

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
7.1
Good
2,982 reviews
Southwest
7.9
Good
4,265 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

7.9

Crew

8.6

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 90 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 $247, United Airlines can have you in Colorado from Boston in 4h 47m. 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 $92 and $93 on Delta 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 - Aspen Pitkin 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 (100%), Delta (93%), United Airlines( 88%).

  • What are the cheapest flights from Boston to Colorado?

    Looking for the cheapest flight from Boston to Colorado? While on average our users pay $836, our data indicates the cheapest price to be $113. 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 $284). 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

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Boston to Colorado

Discover the top 6 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 May 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$108Average$344FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$117Average$256FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$137Average$375FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$175Average$454FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$190Average$511FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$192Average$478FlexibilityNo cancel feeOn-time69%

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