How far in advance should I book tickets for a flight with Frontier from Denver to Portland?

Generally, when trying to get a below average price for your ticket, try to book around 12 days before departure. For the cheapest possible price, our data suggests booking 47 days before departure.

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

Yes, based on our data, Frontier is the cheapest airline to fly the route with an average price of $158 return. The next cheapest options are Hawaiian Airlines and Delta, with return flights costing on average $211 and $236 respectively.

What is the cheapest Frontier flight from Denver to Portland?

In the last 3 days, the lowest price for a flight with Frontier from Denver to Portland was $92 for a return flight and $48 for a one-way flight.

Does Frontier fly direct to Portland from Denver?

No, Frontier does not fly the route directly.

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

On average, the cheapest day of the week to fly from Denver to Portland with Frontier is Sunday, when prices are around $29. The most expensive day is generally Thursday, where the average price is around $52.

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

The cheapest month for Frontier flights to Portland from Denver is generally February, where plane tickets cost $79 on average. If possible, try to avoid the most expensive months of May and November, where tickets cost $159 and $175 respectively.

$48 Cheap Frontier Flights from Denver to Portland

Flight Deals

Cheap Frontier Flight Deals from Denver to Portland

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

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

Round-trip

One-way

Last minute

Direct

Recent round-trip Frontier flight deals from Denver to Portland

Thu, Jan 8 - Sun, Jan 11

9:15 am - 11:15 am

DEN

PDX

3h 00mnonstop

12:10 pm - 3:38 pm

PDX

DEN

2h 28mnonstop

$105Frontier

Thu, Jan 8 - Thu, Jan 15

9:15 am - 11:15 am

DEN

PDX

3h 00mnonstop

10:17 am - 5:00 pm

PDX

DEN

5h 43m1 stop

$110Frontier

Thu, Jan 15 - Sun, Jan 18

6:00 am - 10:33 am

DEN

PDX

5h 33m1 stop

11:49 am - 3:25 pm

PDX

DEN

2h 36mnonstop

$111Frontier

Fri, Mar 6 - Mon, Mar 9

9:10 am - 11:09 am

DEN

PDX

2h 59mnonstop

9:53 am - 9:40 pm

PDX

DEN

10h 47m1 stop

$114Frontier

Thu, Jan 8 - Mon, Jan 12

9:15 am - 11:15 am

DEN

PDX

3h 00mnonstop

6:34 pm - 10:42 am

PDX

DEN

15h 08m1 stop

$117Frontier

Thu, Jan 8 - Sun, Jan 11

9:15 am - 11:15 am

DEN

PDX

3h 00mnonstop

12:10 pm - 3:38 pm

PDX

DEN

2h 28mnonstop

$118Frontier

Fri, Jan 16 - Mon, Jan 19

9:05 am - 11:04 am

DEN

PDX

2h 59mnonstop

11:29 am - 10:30 am

PDX

DEN

22h 01m1 stop

$126Frontier

Fri, Jan 16 - Mon, Jan 19

9:05 am - 11:04 am

DEN

PDX

2h 59mnonstop

6:19 pm - 2:19 pm

PDX

DEN

19h 00m1 stop

$129Frontier

Thu, Jan 15 - Sun, Jan 18

9:05 am - 11:04 am

DEN

PDX

2h 59mnonstop

6:19 pm - 10:30 am

PDX

DEN

39h 11m2 stops

$133Frontier

Sun, Jan 11 - Sun, Jan 18

9:15 am - 11:15 am

DEN

PDX

3h 00mnonstop

11:29 am - 8:36 am

PDX

DEN

20h 07m2 stops

$134Frontier

Useful Info

Low season	September
High season	July
Cheapest flight	$48
Average price round-trip	$141

Best time to beat the crowds but there is an average 7% increase in price.

Most popular time to fly with an average 8% increase in price.

Flight from Denver to Portland

(price for this month)

When to Book Flights with Frontier from Denver to Portland

Average price per month

Flight prices as travel date approaches

How far in advance should I book tickets for a flight with Frontier from Denver to Portland?
Generally, when trying to get a below average price for your ticket, try to book around 12 days before departure. For the cheapest possible price, our data suggests booking 47 days before departure.
Is Frontier the cheapest airline to fly with from Denver to Portland?
Yes, based on our data, Frontier is the cheapest airline to fly the route with an average price of $158 return. The next cheapest options are Hawaiian Airlines and Delta, with return flights costing on average $211 and $236 respectively.
What is the cheapest Frontier flight from Denver to Portland?
In the last 3 days, the lowest price for a flight with Frontier from Denver to Portland was $92 for a return flight and $48 for a one-way flight.
Does Frontier fly direct to Portland from Denver?
No, Frontier does not fly the route directly.
What’s the cheapest day of the week to fly from Denver to Portland with Frontier?
On average, the cheapest day of the week to fly from Denver to Portland with Frontier is Sunday, when prices are around $29. The most expensive day is generally Thursday, where the average price is around $52.
What’s the cheapest month to fly from Denver to Portland with Frontier?
The cheapest month for Frontier flights to Portland from Denver is generally February, where plane tickets cost $79 on average. If possible, try to avoid the most expensive months of May and November, where tickets cost $159 and $175 respectively.

5.8

Fair3,082 verified ratings

6.7Crew

4.6Food

6.0Boarding

5.5Comfort

4.4Entertainment

Pros +

Crew was extremely pleasant. (in 1649 reviews)

Cons -

Several individuals used foul language 50% of of the 4hr flight. (in 4167 reviews)
The seats could be a bit bigger (in 2932 reviews)

Show reviews that mention

2.0 Poor

Verified traveler, Dec 2025

DEN

PHL

Not clean and was told I would get a great seat and it was not great at all

8.0 Very good

Yordanos, Dec 2025

SJU

PHL

Good- no snacks on a 4+ hour flight is painful but more painful was the lack of WiFi.

2.0 Poor

omnia, Dec 2025

MCO

CLE

Flight got delayed for 5 hours no good explanation was offered ;(

6.0 Okay

Verified traveler, Dec 2025

PHX

SEA

Horrible. I would never fly Frontier again. The booking process is tricky at best, but fraudulent in my opinion. Frontier customer service did nothing to rectify my purchase -- I ended up paying more than double what I could have gotten from other airlines and nearly triple what I thought I was buying from Frontier. Their booking practices are unfair to the consumer.

2.0 Poor

Daniel, Nov 2025

DEN

ATL

Delayed. Text notifications were slow. Not much information o what was happening. Boarding was slow and confusing. Wasn’t even offered water other flight. Had to ask. No entertainment at all. Felt like.a Greyhound bus.

8.0 Very good

Jaime, Nov 2025

LAS

SLC

It was excellent everything

4.0 Mediocre

Verified traveler, Nov 2025

LAX

IAH

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

8.0 Very good

Lisa, Nov 2025

PHL

SRQ

Delayed on tarmac and boarding

8.0 Very good

Martha, Nov 2025

MDW

MCO

Better than expected. Staff were friendly and nice on both flights.

2.0 Poor

Justin, Nov 2025

DEN

AUS

Worst experience ever...never fly Frontier again.

Everything you need to know for your flight from Denver to Portland

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DEN - PDX

$48 Find Cheap Frontier Flights from Denver to Portland

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Cheap Frontier Flight Deals from Denver to Portland

Recent round-trip Frontier flight deals from Denver to Portland

Recent one-way Frontier flight deals from Denver to Portland

Recent last minute Frontier flight deals from Denver to Portland

Recent direct Frontier flight deals from Denver to Portland

Good to know

When to Book Flights with Frontier from Denver to Portland

FAQs for flying to Portland with Frontier

How far in advance should I book tickets for a flight with Frontier from Denver to Portland?

Generally, when trying to get a below average price for your ticket, try to book around 12 days before departure. For the cheapest possible price, our data suggests booking 47 days before departure.

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

Yes, based on our data, Frontier is the cheapest airline to fly the route with an average price of $158 return. The next cheapest options are Hawaiian Airlines and Delta, with return flights costing on average $211 and $236 respectively.

What is the cheapest Frontier flight from Denver to Portland?

In the last 3 days, the lowest price for a flight with Frontier from Denver to Portland was $92 for a return flight and $48 for a one-way flight.

Does Frontier fly direct to Portland from Denver?

No, Frontier does not fly the route directly.

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

On average, the cheapest day of the week to fly from Denver to Portland with Frontier is Sunday, when prices are around $29. The most expensive day is generally Thursday, where the average price is around $52.

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

The cheapest month for Frontier flights to Portland from Denver is generally February, where plane tickets cost $79 on average. If possible, try to avoid the most expensive months of May and November, where tickets cost $159 and $175 respectively.

Frontier Customer Reviews

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Cons -

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Everything you need to know for your flight from Denver to Portland

Other airlines flying from Denver to Portland

Flight deals from the most popular airlines with KAYAK users flying the route

Cabin class types available on flights to Portland

Cabin classes available on flights to Denver. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Complete your trip to Portland with a hotel stay or car rental

Flights to other popular destinations

The most popular flights on KAYAK according to clicks in the last 2 weeks. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Top Frontier flights

The most popular destinations for flights with Frontier according to clicks from KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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