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Cheap flights from Portland, Maine to Denver from $129

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Denver departing on 9/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Portland, Maine to Denver

Cheap round-trip flights

JetBlue Logo
2:17 pm - 11:04 pmPWM-DEN
10h 47m1 stop
JetBlue Logo
11:25 am - 10:01 pmDEN-PWM
8h 36m1 stop
$247JetBlue
Find Deal
vie., oct. 3 - mar., oct. 7
Delta Logo
2:36 pm - 10:49 pmPWM-DEN
10h 13m1 stop
Delta Logo
2:00 pm - 12:03 amDEN-PWM
8h 03m1 stop
$257Delta
Find Deal
mié., ago. 20 - mié., ago. 27
United Airlines Logo
3:37 pm - 6:15 pmPWM-DEN
4h 38mnonstop
United Airlines Logo
5:20 pm - 11:19 pmDEN-PWM
3h 59mnonstop
$269United Airlines
Find Deal
mar., jul. 1 - sáb., jul. 5
United Airlines Logo
3:35 pm - 6:00 pmPWM-DEN
4h 25mnonstop
United Airlines Logo
11:54 pm - 9:24 amDEN-PWM
7h 30m1 stop
$279United Airlines
Find Deal
jue., sep. 4 - dom., sep. 7
American Airlines Logo
1:09 pm - 9:01 pmPWM-DEN
9h 52m2 stops
American Airlines Logo
9:03 am - 6:31 pmDEN-PWM
7h 28m1 stop
$284American Airlines
Find Deal
jue., sep. 4 - dom., sep. 7
American Airlines Logo
6:25 pm - 11:44 pmPWM-DEN
7h 19m1 stop
American Airlines Logo
12:21 pm - 11:59 pmDEN-PWM
9h 38m2 stops
$294American Airlines
Find Deal
vie., ago. 1 - mar., ago. 5
Southwest Logo
5:40 am - 12:25 pmPWM-DEN
8h 45m2 stops
Southwest Logo
11:40 pm - 9:50 amDEN-PWM
8h 10m1 stop
$319Southwest
Find Deal
jue., jul. 31 - jue., ago. 7
Southwest Logo
5:40 am - 2:20 pmPWM-DEN
10h 40m2 stops
Southwest Logo
1:15 pm - 11:25 pmDEN-PWM
8h 10m2 stops
$324Southwest
Find Deal
lun., jul. 28 - mar., jul. 29
Frontier Logo
1:41 pm - 11:11 pmPWM-DEN
11h 30m1 stop
Frontier Logo
12:04 am - 5:17 pmDEN-PWM
15h 13m1 stop
$350Frontier
Find Deal
sáb., ago. 30 - vie., sep. 5
Frontier Logo
1:41 pm - 11:11 pmPWM-DEN
11h 30m1 stop
Frontier Logo
12:59 am - 5:17 pmDEN-PWM
14h 18m2 stops
$381Frontier
Find Deal
sáb., ago. 30 - vie., sep. 5

JetBlue flights from Portland, Maine to Denver

Our best JetBlue deals on Portland, Maine to Denver flight tickets
JetBlue
Oct 3
PWM2:17 pmPortland
10h 47m
1 stop
DEN11:04 pmDenver Intl
Oct 7
DEN11:25 amDenver Intl
8h 36m
1 stop
PWM10:01 pmPortland
JetBlue
Oct 3
PWM2:17 pmPortland
10h 47m
1 stop
DEN11:04 pmDenver Intl
Oct 7
DEN11:25 amDenver Intl
8h 36m
1 stop
PWM10:01 pmPortland
JetBlue
Jun 25
PWM2:19 pmPortland
10h 40m
1 stop
DEN10:59 pmDenver Intl
Jul 1
DEN11:25 amDenver Intl
10h 27m
1 stop
PWM11:52 pmPortland

United Airlines flights from Portland, Maine to Denver

Our best United Airlines deals on Portland, Maine to Denver flight tickets
United Airlines
Jul 1
PWM3:37 pmPortland
4h 38m
DEN6:15 pmDenver Intl
Jul 5
DEN5:20 pmDenver Intl
3h 59m
PWM11:19 pmPortland
United Airlines
Sep 4
PWM3:35 pmPortland
4h 25m
DEN6:00 pmDenver Intl
Sep 7
DEN11:54 pmDenver Intl
7h 30m
1 stop
PWM9:24 amPortland
United Airlines
Jul 31
PWM7:15 pmPortland
7h 15m
1 stop
DEN12:30 amDenver Intl
Aug 5
DEN6:00 amDenver Intl
6h 24m
1 stop
PWM2:24 pmPortland

See travel insights to Denver from

How to get the cheapest flight ticket from Portland, Maine to Denver

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Denver?

The cheapest month to fly to Denver from Portland, Maine is in January. Flight prices, which tend to average around $347, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in January, then you should wait until April to fly from Portland, Maine, when ticket prices are also cheap, with an average price of $372.

What is the cheapest day to depart on your flight to Denver?

The cheapest day to depart on your flight to Denver is on a Saturday when prices can be found for as low as $508. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Monday, with ticket prices averaging around $748.

What is the cheapest time of day to depart on your flight to Denver?

The cheapest time of day to fly to Denver is in the evening when flights can be purchased for as low as $361. Flights in the morning are often more expensive with an average ticket price of $686.

What is the cheapest Portland to Denver Intl flight route?

Fly from Portland to Denver Intl for the best Portland - Denver Intl flight prices

How far in advance should I book a flight to Denver?

You are more likely to see cheaper flights to Denver from Portland, Maine when booking 16 weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $457 when searching 16 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Portland, Maine for as low as $389 on momondo.

What cabin class options are available on Portland to Denver Intl flights?

There are 4 cabin classes available to choose from on Portland to Denver Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Portland, Maine to Denver flight prices changed over time?

As of June 2025, prices for Portland, Maine to Denver flights are approximately 9% cheaper when compared to flights at the same time last year.

When to book flights from Portland, Maine to Denver

Are you open to changing your travel dates? Check out the ideal times to fly from Portland, Maine to Denver according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland, Maine to Denver (PWM to DEN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Denver

Best Price Found

$129

Fastest flight time

4h 25m

Direct flights

Every day

Airports in Denver

1 airport
The best one-way flight to Denver from Portland, Maine in the past 72 hours is $129. The best round-trip flight deal from Portland, Maine to Denver found on momondo in the last 72 hours is $247.
The fastest flight from Portland, Maine to Denver takes 4h 25m
Direct flights go from Portland, Maine to Denver every day.
There is 1 airport near Denver: Denver Intl (DEN)

  • How far is Portland to Denver Intl by plane?

    There are 1797.3 mi between Portland and Denver Intl. In terms of flight time, this usually takes a little over 4h 25m.

  • When did momondo last update prices for flights from Portland Airport to Denver Intl Airport?

    Prices for flights from Portland Airport to Denver Intl Airport refresh daily.

  • How many operators does momondo search for flights from Portland Airport to Denver Intl Airport?

  • How old do you have to be to fly from Portland Airport to Denver Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Denver Intl Airport.

  • What documentation or ID do you need to fly to Denver Intl Airport?

    The required travel and health documents for your Denver Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Denver Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Portland, Maine to Denver?

  • What is the most popular airline from Portland, Maine to Denver?


Best airlines flying from Portland, Maine to Denver

Compare and see reviews for airlines that fly from Portland, Maine to Denver with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $149Free CancellationRating
5.9
3,295 reviews
Search Frontier flights
JetBluePriceFrom $226Free CancellationRating
7.3
2,925 reviews
Search JetBlue flights
DeltaPriceFrom $236Free CancellationRating
8.0
7,946 reviews
Search Delta flights
American AirlinesPriceFrom $256Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $305Free CancellationRating
8.0
4,287 reviews
Search Southwest flights
United AirlinesPriceFrom $322Free CancellationRating
7.4
8,790 reviews
Search United Airlines flights
  • United Airlines Flights From Portland, Maine to Denver

    United Airlines operates around 7 flights from Portland, Maine to Denver every week. The average price of these flights found in the last 72 hours has been $541, but momondo users have found United Airlines deals from Portland, Maine to Denver from as low as $322 round-trip. United Airlines has been scored 7.4/10 in 8,790 reviews.


Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Estes Park
Breckenridge
Black Hawk
Aurora
Fort Collins
Keystone
Cripple Creek
Longmont
Lakewood
Boulder
Manitou Springs
Westminster
Greeley
Thornton
Winter Park
Silverthorne
Copper Mountain
Golden
Frisco
Grand Lake

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Denver?

It is quick and easy to find Portland to Denver flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Denver that suits you.

Can I find flights from Portland to Denver with flexible booking policies on momondo?

All flight searches from Portland to Denver on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Portland to Denver?

Once all potential Portland to Denver flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Portland to Denver right now. Can momondo alert me if prices change?

Price alerts on flights to Denver from Portland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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1 adult
mar. 6/17
mar. 6/24

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