How far in advance should I book tickets for a flight with Frontier from Washington, D.C. to Denver?

Generally, when trying to get a below average price for your ticket, try to book around 6 days before departure. For the cheapest possible price, our data suggests booking 127 days before departure.

Is Frontier the cheapest airline to fly with from Washington, D.C. to Denver?

Yes, based on our data, Frontier is the cheapest airline to fly the route with an average price of $244 return. The next cheapest options are Sun Country Air and Delta, with return flights costing on average $285 and $291 respectively.

What is the cheapest Frontier flight from Washington, D.C. to Denver?

In the last 3 days, the lowest price for a flight with Frontier from Washington, D.C. to Denver was $99 for a return flight and $62 for a one-way flight.

Does Frontier fly direct to Denver from Washington, D.C.?

Yes, Frontier does offer direct flights for the route, with around 20 flights per week.

What’s the cheapest day of the week to fly from Washington, D.C. to Denver with Frontier?

On average, the cheapest day of the week to fly from Washington, D.C. to Denver with Frontier is Tuesday, when prices are around $29. The most expensive day is generally Saturday, where the average price is around $79.

What’s the cheapest month to fly from Washington, D.C. to Denver with Frontier?

The cheapest month for Frontier flights to Denver from Washington, D.C. is generally September, where plane tickets cost $100 on average. If possible, try to avoid the most expensive months of January and December, where tickets cost $173 and $210 respectively.

$28 Cheap Frontier Flights from Washington, D.C. to Denver

WAS - DEN

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Cheap Frontier Flight Deals from Washington, D.C. to Denver

Here are some of the best deals found on KAYAK recently from Frontier for round-trip flights from Washington, D.C. to Denver 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

Direct

Recent round-trip Frontier flight deals from Washington, D.C. to Denver

Recommended round-trip Frontier deals departing in the coming months from Washington, D.C. to Denver.

Discover the best prices and deals for you by selecting your travel dates.

Choose your dates

1:03 pm - 3:19 pmDCA-DEN

4h 16mnonstop

4:39 pm - 9:59 pmDEN-DCA

3h 20mnonstop

$57Frontier

Find Deal

Mi, Feb 19 - Mi, Feb 26

6:00 pm - 8:12 pmDCA-DEN

4h 12mnonstop

6:40 am - 12:03 pmDEN-DCA

3h 23mnonstop

$58Frontier

Find Deal

Sa, Feb 22 - Di, Feb 25

7:00 am - 9:12 amDCA-DEN

4h 12mnonstop

4:39 pm - 9:59 pmDEN-DCA

3h 20mnonstop

$61Frontier

Find Deal

Di, Feb 25 - Mi, Feb 26

1:03 pm - 3:19 pmDCA-DEN

4h 16mnonstop

6:40 am - 12:03 pmDEN-DCA

3h 23mnonstop

$65Frontier

Find Deal

Sa, Mrz 1 - Di, Mrz 11

7:00 am - 9:12 amDCA-DEN

4h 12mnonstop

6:50 am - 12:13 pmDEN-DCA

3h 23mnonstop

$67Frontier

Find Deal

Mi, Feb 26 - Mo, Mrz 3

6:00 pm - 8:12 pmDCA-DEN

4h 12mnonstop

6:50 am - 12:13 pmDEN-DCA

3h 23mnonstop

$68Frontier

Find Deal

Sa, Feb 22 - Mo, Mrz 3

7:00 am - 9:12 amDCA-DEN

4h 12mnonstop

6:40 am - 12:03 pmDEN-DCA

3h 23mnonstop

$73Frontier

Find Deal

Di, Feb 25 - Do, Feb 27

7:00 am - 9:12 amDCA-DEN

4h 12mnonstop

4:39 pm - 9:59 pmDEN-DCA

3h 20mnonstop

$79Frontier

Find Deal

Mi, Feb 19 - Mi, Feb 26

7:00 am - 9:12 amDCA-DEN

4h 12mnonstop

4:39 pm - 9:59 pmDEN-DCA

3h 20mnonstop

$80Frontier

Find Deal

Mi, Feb 26 - Di, Mrz 4

1:00 pm - 3:07 pmDCA-DEN

4h 07mnonstop

6:50 am - 12:09 pmDEN-DCA

3h 19mnonstop

$82Frontier

Find Deal

Sa, Apr 26 - Di, Apr 29

Low season	November
High season	July
Cheapest flight	$28
Average price round-trip	$250
Good deal one-way	$194

Best time to beat the crowds with an average 8% drop in price.

Most popular time to fly with an average 7% increase in price.

Flight from Reagan Washington National Airport to Denver

(avg. price over the last 2 weeks)

or less

When to Book Flights with Frontier from Washington, D.C. to Denver

Average price per month

Flight prices as travel date approaches

How far in advance should I book tickets for a flight with Frontier from Washington, D.C. to Denver?
Generally, when trying to get a below average price for your ticket, try to book around 6 days before departure. For the cheapest possible price, our data suggests booking 127 days before departure.
Is Frontier the cheapest airline to fly with from Washington, D.C. to Denver?
Yes, based on our data, Frontier is the cheapest airline to fly the route with an average price of $244 return. The next cheapest options are Sun Country Air and Delta, with return flights costing on average $285 and $291 respectively.
What is the cheapest Frontier flight from Washington, D.C. to Denver?
In the last 3 days, the lowest price for a flight with Frontier from Washington, D.C. to Denver was $99 for a return flight and $62 for a one-way flight.
Does Frontier fly direct to Denver from Washington, D.C.?
Yes, Frontier does offer direct flights for the route, with around 20 flights per week.
What’s the cheapest day of the week to fly from Washington, D.C. to Denver with Frontier?
On average, the cheapest day of the week to fly from Washington, D.C. to Denver with Frontier is Tuesday, when prices are around $29. The most expensive day is generally Saturday, where the average price is around $79.
What’s the cheapest month to fly from Washington, D.C. to Denver with Frontier?
The cheapest month for Frontier flights to Denver from Washington, D.C. is generally September, where plane tickets cost $100 on average. If possible, try to avoid the most expensive months of January and December, where tickets cost $173 and $210 respectively.

See more FAQs

6.0

OkayBased on 3,429 verified guest reviews

6.3Boarding

4.7Entertainment

4.9Food

6.9Crew

5.7Comfort

Pros +

Cons -

Show reviews that mention

2.0 Poor

Jerome, Jan 2025

SJU-PHL

Flight was delayed over 8 hours.

2.0 Poor

Verified traveler, Jan 2025

JFK-SJU

The flight left over two hours late. They charged me $180 to bring a carry on. There was an error with the spelling of my name and Frontair agent lied that I would need to pay $200 for her to fix the spelling, and pressured me that if I don't do it quick I would lose the flight. I called back and another agent said it costs $75 to fix. All in all, this company is a complete scam.

10.0 Wonderful

Verified traveler, Jan 2025

LAS-JFK

Very easy with the app to board and staff skills

4.0 Mediocre

Verified traveler, Jan 2025

JFK-SJU

I took my first and last flight with FRONTIER. The seats are not able to be reclined so it’s not a very comfortable experience when you take a flight of 3 hours or longer. You must pay for your luggage either carry on or check in, so taking all this in consideration at the end what you think you’re saving your paying in services that should be included. Not a beverage in sight. . You’re seriously better off getting on a proper airline such as Delta, AA, United, etc.

2.0 Poor

Verified traveler, Jan 2025

MCO-MDW

After waiting several minutes to be acknowledged by 3 employees on their phones, was told we had missed our flight because the doors were closed at that literal moment. Had they given any actual service or help while we were standing there we would have been on with time to spare. More than 10 people were turned away in this fashion claiming there was no way they could let us on the plane, even though it was still sitting connected to the terminal. After the desk agents let us know they didn't care about the situation we were forced to pay more than twice the price of our original tickets as no credits were given for the price of the "missed" flight. And the icing on the cake was after being treated poorly, fleeced for another few hundred dollars for new tickets? We waited on the next plane for 25 minutes passed the "doors closed" time, letting almost an extra dozen passengers on board. You're company has lazy, disinterested employees and your lack of any real help will ensure this was the first and last time we fly Frontier. Awful.

2.0 Poor

Verified traveler, Jan 2025

SJU-JFK

Flight was changed (according to Frontier, by Kayak) without my notification. And all flights were delayed by at least an hour and a half. Uncomfortable plane. Bad service. Will never fly Frontier again.

10.0 Wonderful

Verified traveler, Jan 2025

EWR-SJU

Liked price. Seats could be better.

2.0 Poor

Verified traveler, Jan 2025

LAX-SEA

Very poor will never book from frontier again

10.0 Wonderful

Verified traveler, Jan 2025

PHX-DFW

My experience with the phoenix airport was terrible, the personnel lay the ticket counter charged me for a carry on that fit in the carry on size box, and the two women I spoke with were terribly rude and not willing to help.,,, there was one lady “candy” on the flight crew that was amazing and is the only reason I stayed on the flight at all, because the other stewards helping people to get seated on the plane were terrible

6.0 Okay

Alan, Jan 2025

SFO-DEN

I loked walking out on the tarmac to board and no first class. I didn't like that they have no snacks or onboard wifi to bide your time.