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$40+ Cheap flights from Dallas/Fort Worth (DFW) to Boulder, CO

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 2/12. Fares are subject to change and may not be available on all flights or dates of travel.
DFW — DEN
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheapflights Tip: The best prices from Dallas/Fort Worth to Boulder are usually found in February or January, booked 77 days in advance, depart on a Saturday or Friday and return on a Friday

Cheap flight deals from Dallas/Fort Worth to Boulder

Cheapest flights from Dallas/Fort Worth to Boulder
Explore the most affordable flight options available from Dallas/Fort Worth to Boulder. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

This CheapOair deal was found by Cheapflights users on 12/13. 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 12/248:40 pmDFW - DEN
1 stop14h 23mFrontier
Sat 1/315:25 pmDEN - DFW
Nonstop2h 08mFrontier
Deal found 12/13$111
This Frontier deal was found by Cheapflights users on 12/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:52 pmDFW - DEN
1 stop13h 57mFrontier
Wed 12/319:05 pmDEN - DFW
Nonstop2h 04mFrontier
Deal found 12/13$120
This Frontier deal was found by Cheapflights users on 12/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:52 pmDFW - DEN
1 stop13h 57mFrontier
Thu 12/259:05 pmDEN - DFW
Nonstop2h 04mFrontier
Deal found 12/15$130
This Cheapflightsfares deal was found by Cheapflights users on 12/14. 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.
Thu 12/253:56 pmDFW - DEN
Nonstop2h 20mFrontier
Thu 1/19:05 pmDEN - DFW
Nonstop2h 04mFrontier
Deal found 12/14$133
This Cheapflightsfares deal was found by Cheapflights users on 12/14. 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 12/209:43 pmDFW - DEN
1 stop10h 50mFrontier
Sun 1/186:05 amDEN - DFW
Nonstop2h 15mFrontier
Deal found 12/14$135
This Super.com deal was found by Cheapflights users on 12/13. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2610:25 pmDFW - DEN
Nonstop2h 21mFrontier
Thu 1/19:05 pmDEN - DFW
Nonstop2h 04mFrontier
Deal found 12/13$139
This Super.com deal was found by Cheapflights users on 12/14. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:43 pmDFW - DEN
Nonstop2h 20mFrontier
Thu 1/19:05 pmDEN - DFW
Nonstop2h 04mFrontier
Deal found 12/14$147
This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
Sun 12/217:13 amDFW - DEN
1 stop17h 00mFrontier
Sun 1/186:05 amDEN - DFW
Nonstop2h 15mFrontier
Deal found 12/14$148
This Cheapflightsfares deal was found by Cheapflights users on 12/15. 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.
Sun 12/217:13 amDFW - DEN
1 stop17h 00mFrontier
Thu 12/256:26 pmDEN - DFW
Nonstop2h 06mFrontier
Deal found 12/15$155
This American Airlines deal was found by Cheapflights users on 12/12. 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 12/247:00 pmDFW - DEN
Nonstop2h 11mAmerican Airlines
Wed 12/315:00 amDEN - DFW
Nonstop2h 04mAmerican Airlines
Deal found 12/12$158

Find flight deals from Dallas/Fort Worth to Boulder

Keep the following information in mind while searching for Dallas/Fort Worth to Boulder flight deals. Data was last updated December 15, 2025.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$65
(Kiwi.com)

One-way from

$40
(Expedia)

Popular in

December

Cheapest in

February

Average price

$213
Provider with most accurate pricing for Dallas-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Dallas-Denver Intl flights.
Search Deals
From Dallas/Fort Worth to Boulder
Search Deals
One-way flight from Dallas/Fort Worth to Boulder
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($3 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dallas/Fort Worth to Boulder 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 December 15, 2025.
Use the filters below to find and compare flights from Dallas/Fort Worth Airport to Boulder that are best for you.

Fly from

Dallas/Fort Worth

Fly to

Boulder

Route

Depart

Return

Price

DallasDenver

DFW - DEN

DFWDEN

Dallas/Fort Worth

Tue 1/6

5:11 pm-10:06 pm

1 stop5h 55m

Denver Intl

Tue 1/13

1:45 pm-4:49 pm

Nonstop2h 04m

$164

DallasDenver

DFW - DEN

DFWDEN

Dallas/Fort Worth

Sat 2/14

3:00 pm-8:05 pm

1 stop6h 05m

Denver Intl

Wed 2/18

12:59 am-8:59 am

1 stop7h 00m

$187

DallasDenver

DFW - DEN

DFWDEN

Dallas/Fort Worth

Mon 1/19

5:25 am-12:10 pm

1 stop7h 45m

Denver Intl

Fri 1/23

5:15 am-11:35 am

1 stop5h 20m

$194

DallasDenver

DFW - DEN

DFWDEN

Dallas/Fort Worth

Fri 1/9

6:10 pm-7:30 pm

Nonstop2h 20m

Denver Intl

Mon 1/12

3:35 pm-6:39 pm

Nonstop2h 04m

$194

DallasDenver

DFW - DEN

DFWDEN

Dallas/Fort Worth

Sun 1/25

5:25 am-12:10 pm

1 stop7h 45m

Denver Intl

Fri 1/30

12:46 pm-9:16 pm

1 stop7h 30m

$197

DallasDenver

DFW - DEN

DFWDEN

Dallas/Fort Worth

Wed 2/11

2:59 pm-8:05 pm

1 stop6h 06m

Denver Intl

Fri 2/13

4:43 pm-12:16 am

1 stop6h 33m

$225

DallasDenver

DFW - DEN

DFWDEN

Dallas/Fort Worth

Fri 2/13

6:02 pm-10:27 pm

1 stop5h 25m

Denver Intl

Wed 2/18

12:59 am-10:33 am

1 stop8h 34m

$235

DallasDenver

DFW - DEN

DFWDEN

Dallas/Fort Worth

Fri 3/13

6:15 pm-11:39 pm

1 stop6h 24m

Denver Intl

Mon 3/16

12:55 am-10:26 am

1 stop8h 31m

$256

DallasDenver

DFW - DEN

DFWDEN

Dallas/Fort Worth

Fri 3/13

5:30 am-6:43 am

Nonstop2h 13m

Denver Intl

Fri 3/20

5:00 am-12:16 pm

1 stop6h 16m

$263

DallasDenver

DFW - DEN

DFWDEN

Dallas/Fort Worth

Sun 12/21

7:13 am-11:13 pm

1 stop17h 00m

Denver Intl

Tue 12/23

9:59 am-5:43 am

1 stop18h 44m

$267

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 22 results
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Best time to book a flight from Dallas/Fort Worth to Boulder

Have a flexible travel schedule? Discover the best time to fly to Boulder from Dallas/Fort Worth 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 Dallas/Fort Worth Airport to Boulder

How far ahead should I book a flight from Dallas/Fort Worth Airport to Boulder?

Use this chart to determine the optimal time to book a round-trip flight from Dallas/Fort Worth to Boulder. Price data was last updated on December 12, 2025.

To ensure you get the cheapest price possible for a flight from Dallas/Fort Worth Airport to Boulder, you should look to book at least 77 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Dallas/Fort Worth Airport to Boulder?

Currently, February is the cheapest month in which you can book a flight from Dallas/Fort Worth Airport to Boulder (average of $37). Flying from Dallas/Fort Worth Airport to Boulder in July is currently the most expensive (average of $99). 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 DFW to BD9?

Find hourly flight availability from Dallas/Fort Worth to Boulder. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 15, 2025.

One of the essential ways to save on airfare from Dallas/Fort Worth Airport to Boulder is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 31% on airfare.

What is the cheapest day to fly from Dallas/Fort Worth Airport to Boulder?

Use this chart to determine the cheapest time to fly round-trip from Dallas/Fort Worth to Boulder. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Dallas/Fort Worth Airport to Boulder flight should consider departing on Sunday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Dallas/Fort Worth Airport to Boulder?

Reviews of airlines servicing Boulder

Get insights into the airlines that provide service to Boulder. 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 Boulder. Reviews last updated December 15, 2025.
Read through reviews of airlines operating flights from Dallas/Fort Worth Airport to Boulder, such as Alaska Airlines, Southwest, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,455 reviews

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,455 reviews
Alaska Airlines
8.0
Very good
11,455 reviews

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Southwest
7.9
Good
4,249 reviews
Alaska Airlines
8.0
Very good
11,455 reviews

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,094 reviews
Alaska Airlines
8.0
Very good
11,455 reviews

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
American Airlines
7.2
Good
11,050 reviews
Alaska Airlines
8.0
Very good
11,455 reviews

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Frontier
5.8
Fair
3,082 reviews
Alaska Airlines
8.0
Very good
11,455 reviews

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

Related info for your journey

Find useful and relevant information for your journey from Dallas/Fort Worth to Boulder. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Dallas/Fort Worth Airport to Boulder?

    Departing from Dallas/Fort Worth Airport to Boulder will take you 5h 55m. Dallas/Fort Worth Airport and Boulder are separated by a distance of 641 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Dallas/Fort Worth Airport to Boulder one-way?

    One-way options have recently been found by users for as low as $35 on Frontier. Other airlines that offer cheap prices include American Airlines from $78 and Southwest from $80 one-way.

  • What are the most reliable airlines from Dallas/Fort Worth Airport to Boulder?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Dallas/Fort Worth Airport to Boulder on time: Air Canada (85%), United Airlines (81%), Frontier (81%).

  • What are the cheapest flights from Dallas/Fort Worth Airport to Boulder?

    On average you can expect to pay $775 for a flight from Dallas/Fort Worth Airport to Boulder. The cheapest flight overall is $47 while the most popular route, (Dallas/Fort Worth - Denver Intl) is currently priced at $57.

  • Can I find deals for flights from Dallas/Fort Worth to Boulder that include hotel bookings?

    Yes. In addition to deals on Dallas/Fort Worth to Boulder flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dallas/Fort Worth to Boulder?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dallas/Fort Worth to Boulder.

  • Can I find deals for business class flights from Dallas/Fort Worth to Boulder?

    Yes. Cheapflights offers flight deals from Dallas/Fort Worth to Boulder 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 Dallas/Fort Worth Airport to Boulder?

    Currently, February is the cheapest month in which you can book a flight from Dallas/Fort Worth Airport to Boulder (average of $37). Flying from Dallas/Fort Worth Airport to Boulder in July is currently the most expensive (average of $99). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from Dallas/Fort Worth to Boulder

Discover the top 6 airlines that operate flights from Dallas/Fort Worth to Boulder. 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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$57Average$142FlexibilityNo cancel feeOn-time62%
Denver Air ConnectionCheapest$104Average$208FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$132Average$191FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$147Average$337FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$148Average$288FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$157Average$285FlexibilityNo cancel feeOn-time63%

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