Is Frontier the cheapest airline to fly with from Denver to Boston?

Yes, based on our data, Frontier is the cheapest airline to fly the route with an average price of $177 return. The next cheapest options are Breeze Airways and JetBlue, with return flights costing on average $181 and $275 respectively.

What is the cheapest Frontier flight from Denver to Boston?

In the last 3 days, the lowest price for a flight with Frontier from Denver to Boston was $128 for a return flight and $98 for a one-way flight.

Does Frontier fly direct to Boston from Denver?

No, Frontier does not fly the route directly.

What’s the cheapest day of the week to fly from Denver to Boston with Frontier?

On average, the cheapest day of the week to fly from Denver to Boston with Frontier is Tuesday, when prices are around $51. The most expensive day is generally Thursday, where the average price is around $93.

What’s the cheapest month to fly from Denver to Boston with Frontier?

The cheapest month for Frontier flights to Boston from Denver is generally March, where plane tickets cost $72 on average. If possible, try to avoid the most expensive months of July and April, where tickets cost $144 and $158 respectively.

$118 Cheap Frontier Flights from Denver to Boston

DEN - BOS

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Cheap Frontier Flight Deals from Denver to Boston

Here are some of the best deals found on KAYAK recently from Frontier for round-trip flights from Denver to Boston that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Round-trip

One-way

Last minute

Recent round-trip Frontier flight deals from Denver to Boston

KAYAK's recommended round-trip Frontier deals departing in the coming months from Denver to Boston.

Discover the best prices for you by selecting your travel dates on KAYAK.

Choose your dates

12:28 am - 11:52 amDEN-BOS

9h 24m1 stop

12:58 pm - 11:04 pmBOS-DEN

12h 06m1 stop

$237Frontier

Find Deal

Thu, May 8 - Mon, May 12

12:28 am - 11:52 amDEN-BOS

9h 24m1 stop

12:58 pm - 11:04 pmBOS-DEN

12h 06m1 stop

$238Frontier

Find Deal

Thu, May 8 - Mon, May 12

12:28 am - 11:52 amDEN-BOS

9h 24m1 stop

12:58 pm - 11:04 pmBOS-DEN

12h 06m1 stop

$240Frontier

Find Deal

Thu, May 8 - Mon, May 12

12:30 am - 1:05 amDEN-BOS

22h 35m1 stop

12:59 pm - 11:17 pmBOS-DEN

12h 18m1 stop

$241Frontier

Find Deal

Wed, May 7 - Thu, May 15

12:28 am - 11:52 amDEN-BOS

9h 24m1 stop

12:00 pm - 11:59 pmBOS-DEN

13h 59m1 stop

$247Frontier

Find Deal

Sun, May 4 - Mon, May 12

12:28 am - 11:52 amDEN-BOS

9h 24m1 stop

8:00 am - 11:29 pmBOS-DEN

17h 29m1 stop

$248Frontier

Find Deal

Thu, May 1 - Sat, May 10

12:30 am - 1:05 amDEN-BOS

22h 35m1 stop

12:59 pm - 11:17 pmBOS-DEN

12h 18m1 stop

$249Frontier

Find Deal

Wed, May 7 - Thu, May 15

11:59 pm - 9:34 amDEN-BOS

7h 35m1 stop

10:14 am - 11:59 pmBOS-DEN

15h 45m1 stop

$250Frontier

Find Deal

Sun, May 4 - Sun, May 11

12:28 am - 11:52 amDEN-BOS

9h 24m1 stop

8:00 am - 11:29 pmBOS-DEN

17h 29m1 stop

$251Frontier

Find Deal

Sun, May 4 - Sat, May 10

12:28 am - 11:52 amDEN-BOS

9h 24m1 stop

10:14 am - 11:59 pmBOS-DEN

15h 45m1 stop

$252Frontier

Find Deal

Sun, May 4 - Sun, May 11

Low season	February
High season	July
Cheapest flight	$118
Average price round-trip	$321

Best time to beat the crowds with an average 5% drop in price.

Most popular time to fly with an average 20% increase in price.

Flight from Denver to Boston

(price for this month)

When to Book Flights with Frontier from Denver to Boston

Average price per month

Flight prices as travel date approaches

Is Frontier the cheapest airline to fly with from Denver to Boston?
Yes, based on our data, Frontier is the cheapest airline to fly the route with an average price of $177 return. The next cheapest options are Breeze Airways and JetBlue, with return flights costing on average $181 and $275 respectively.
What is the cheapest Frontier flight from Denver to Boston?
In the last 3 days, the lowest price for a flight with Frontier from Denver to Boston was $128 for a return flight and $98 for a one-way flight.
Does Frontier fly direct to Boston from Denver?
No, Frontier does not fly the route directly.
What’s the cheapest day of the week to fly from Denver to Boston with Frontier?
On average, the cheapest day of the week to fly from Denver to Boston with Frontier is Tuesday, when prices are around $51. The most expensive day is generally Thursday, where the average price is around $93.
What’s the cheapest month to fly from Denver to Boston with Frontier?
The cheapest month for Frontier flights to Boston from Denver is generally March, where plane tickets cost $72 on average. If possible, try to avoid the most expensive months of July and April, where tickets cost $144 and $158 respectively.

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6.0

OkayBased on 3,281 verified guest reviews

5.6Comfort

6.2Boarding

6.8Crew

4.8Food

4.6Entertainment

Pros +

Cons -

On the ticket it said checked bag. (in 1044 reviews)

Show reviews that mention

10.0 Wonderful

Verified traveler, Apr 2025

LAX-DFW

It was a short flight so no food or entertainment….

2.0 Poor

Nancy, Apr 2025

SEA-PHX

Frontier is a scam! Do not sell this airline.

8.0 Very good

Greg, Apr 2025

MCO-DEN

Seats are uncomfortable but price is good. Guess I can put up with misery for four hours.

10.0 Wonderful

Alberto, Apr 2025

MIA-CVG

Best ever app invented

8.0 Very good

Verified traveler, Apr 2025

SEA-LAS

I’ve never traveled on Frontier before. If you want basic, no frills, friendly service at great prices then give them a fly!

6.0 Okay

Verified traveler, Apr 2025

SJU-JFK

I guess you get what you pay for. The seats are very uncomfortable and very little space. The snacks were pricey.

2.0 Poor

Verified traveler, Apr 2025

MIA-CVG

Cancelled and declined to find alternatives Earlier flight is 2 days later Sent the cancellation notification very late, wish I knew earlier would have stayed to watch the Miami open final game Very disappointing service

2.0 Poor

Kevin, Mar 2025

LAS-PDX

The worst flight of my life. Never will I fly frontier again

8.0 Very good

Chao-Hsiang, Mar 2025

AUS-LAS

Landing in terminal 2, but my luggage is terminal 3. We (and others) were looking for it in terminal 1. We probably missed the crew broadcast, but the communication could have been clearer for non native (or elderly) passengers.

2.0 Poor

Verified traveler, Mar 2025

CVG-MIA

I chose the seats when booked the flight and paid for them. However after checking in I found we were assigned different seats!