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Cheap flights from Colorado to Pennsylvania from $55

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Pennsylvania departing on 9/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Colorado to Pennsylvania

Cheap round-trip flights

Frontier Logo
6:45 am - 12:11 pmDEN-DCA
3h 26mnonstop
Frontier Logo
7:00 am - 9:08 amDCA-DEN
4h 08mnonstop
$109Frontier
Find Deal
Sat, Nov 1 - Mon, Nov 3
Frontier Logo
6:45 am - 12:10 pmDEN-DCA
3h 25mnonstop
Frontier Logo
6:00 pm - 7:58 pmDCA-DEN
3h 58mnonstop
$112Frontier
Find Deal
Sat, Sep 6 - Sat, Sep 13
Southwest Logo
9:40 am - 3:00 pmDEN-IAD
3h 20mnonstop
Southwest Logo
7:00 am - 8:40 amIAD-DEN
3h 40mnonstop
$177Southwest
Find Deal
Sat, Sep 6 - Sat, Sep 13
United Airlines Logo
11:59 pm - 5:22 amDEN-IAD
3h 23mnonstop
United Airlines Logo
10:09 pm - 11:57 pmIAD-DEN
3h 48mnonstop
$183United Airlines
Find Deal
Tue, Oct 14 - Tue, Oct 21
United Airlines Logo
8:00 am - 1:26 pmDEN-IAD
3h 26mnonstop
United Airlines Logo
10:25 am - 12:09 pmIAD-DEN
3h 44mnonstop
$188United Airlines
Find Deal
Wed, Sep 3 - Fri, Sep 5
American Airlines Logo
11:29 am - 5:26 pmDEN-PHL
3h 57mnonstop
American Airlines Logo
7:40 pm - 9:50 pmPHL-DEN
4h 10mnonstop
$192American Airlines
Find Deal
Wed, Sep 10 - Wed, Sep 10
American Airlines Logo
11:59 pm - 9:55 amDEN-IAD
7h 56m1 stop
American Airlines Logo
5:37 pm - 10:05 pmIAD-DEN
6h 28m1 stop
$195American Airlines
Find Deal
Tue, Oct 14 - Tue, Oct 21
Southwest Logo
5:30 pm - 10:50 pmDEN-IAD
3h 20mnonstop
Southwest Logo
7:00 am - 8:40 amIAD-DEN
3h 40mnonstop
$197Southwest
Find Deal
Sat, Aug 30 - Sat, Sep 6
Delta Logo
7:05 am - 12:57 pmDEN-JFK
3h 52mnonstop
Delta Logo
3:50 pm - 6:19 pmJFK-DEN
4h 29mnonstop
$197Delta
Find Deal
Sat, Oct 11 - Wed, Oct 22
Delta Logo
11:59 pm - 6:00 amDEN-JFK
4h 01mnonstop
Delta Logo
7:55 pm - 10:49 pmJFK-DEN
4h 54mnonstop
$227Delta
Find Deal
Fri, Aug 22 - Tue, Aug 26

Delta flights from Colorado to Pennsylvania

Our best Delta deals on Colorado to Pennsylvania flight tickets
Delta
Oct 11
DEN7:05 amDenver Intl
3h 52m
JFK12:57 pmNew York John F Kennedy Intl
Oct 22
JFK3:50 pmNew York John F Kennedy Intl
4h 29m
DEN6:19 pmDenver Intl
$197
Find similar
Delta
Aug 22
DEN11:59 pmDenver Intl
4h 01m
JFK6:00 amNew York John F Kennedy Intl
Aug 26
JFK7:55 pmNew York John F Kennedy Intl
4h 54m
DEN10:49 pmDenver Intl
$227
Find similar
Delta
Oct 2
DEN7:05 amDenver Intl
3h 56m
JFK1:01 pmNew York John F Kennedy Intl
Nov 1
JFK7:59 pmNew York John F Kennedy Intl
4h 47m
DEN10:46 pmDenver Intl
$237
Find similar

JetBlue flights from Colorado to Pennsylvania

Our best JetBlue deals on Colorado to Pennsylvania flight tickets
JetBlue
Sep 6
DEN11:25 amDenver Intl
3h 57m
JFK5:22 pmNew York John F Kennedy Intl
Sep 13
JFK8:10 amNew York John F Kennedy Intl
4h 30m
DEN10:40 amDenver Intl
$220
Find similar
JetBlue
Oct 17
DEN11:25 amDenver Intl
3h 48m
JFK5:13 pmNew York John F Kennedy Intl
Oct 21
JFK8:10 amNew York John F Kennedy Intl
4h 30m
DEN10:40 amDenver Intl
$222
Find similar
JetBlue
Sep 6
DEN11:25 amDenver Intl
3h 57m
JFK5:22 pmNew York John F Kennedy Intl
Sep 13
JFK8:10 amNew York John F Kennedy Intl
4h 30m
DEN10:40 amDenver Intl
$224
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Colorado to Pennsylvania 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, momondo users made 832,500 searches. Data last updated August 3, 2025.
Use the filters below to find and compare flights from Colorado to Pennsylvania that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 11/1

6:45 am-12:11 pm

Nonstop3h 26m

Washington, D.C. Reagan-National

Mon 11/3

7:00 am-9:08 am

Nonstop4h 08m

$109

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 9/6

6:45 am-12:10 pm

Nonstop3h 25m

Washington, D.C. Reagan-National

Sat 9/13

6:00 pm-7:58 pm

Nonstop3h 58m

$112

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 9/6

9:40 am-3:00 pm

Nonstop3h 20m

Washington, D.C. Dulles Intl

Sat 9/13

7:00 am-8:40 am

Nonstop3h 40m

$177

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Tue 10/14

11:59 pm-5:22 am

Nonstop3h 23m

Washington, D.C. Dulles Intl

Tue 10/21

10:09 pm-11:57 pm

Nonstop3h 48m

$183

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Wed 9/3

8:00 am-1:26 pm

Nonstop3h 26m

Washington, D.C. Dulles Intl

Fri 9/5

10:25 am-12:09 pm

Nonstop3h 44m

$188

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Wed 9/10

11:29 am-5:26 pm

Nonstop3h 57m

Philadelphia

Wed 9/10

7:40 pm-9:50 pm

Nonstop4h 10m

$192

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Tue 10/14

11:59 pm-9:55 am

1 stop7h 56m

Washington, D.C. Dulles Intl

Tue 10/21

5:37 pm-10:05 pm

1 stop6h 28m

$195

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 8/30

5:30 pm-10:50 pm

Nonstop3h 20m

Washington, D.C. Dulles Intl

Sat 9/6

7:00 am-8:40 am

Nonstop3h 40m

$197

DenverNew York

DEN - JFK

DENJFK

Denver Intl

Sat 10/11

7:05 am-12:57 pm

Nonstop3h 52m

New York John F Kennedy Intl

Wed 10/22

3:50 pm-6:19 pm

Nonstop4h 29m

$197

DenverNew York

DEN - JFK

DENJFK

Denver Intl

Fri 8/22

11:59 pm-6:00 am

Nonstop4h 01m

New York John F Kennedy Intl

Tue 8/26

7:55 pm-10:49 pm

Nonstop4h 54m

$227

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Pennsylvania from

How to get the cheapest flight ticket from Colorado to Pennsylvania

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 Pennsylvania?

The month of September is, on average, the cheapest month to fly to Pennsylvania from Colorado, with most prices found around $257. If you don’t want to visit Pennsylvania in September, then you should wait until October to fly from Colorado, when ticket prices are also cheap, with an average price of $261.

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

The cheapest day to depart on your flight to Pennsylvania is on a Wednesday when prices can be found for as low as $312. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $439. These prices are subject to change though, so be sure to set up a Price Alert for flights to Pennsylvania.

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

Our most recent data shows that the best time of day to fly to Pennsylvania is in the afternoon. Flights from Colorado to Pennsylvania during this time can be as low as $248. In contrast, the most expensive time of day to depart to Pennsylvania is at noon when prices are around $501.

What is the cheapest Colorado to Pennsylvania flight route?

Fly from Denver Intl to Allentown-Bethlehem for the best Colorado - Pennsylvania flight prices

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

You are more likely to see cheaper flights to Pennsylvania from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Pennsylvania for around $303 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Pennsylvania from Colorado for as low as $260 on momondo.

What cabin class options are available on Colorado to Pennsylvania flights?

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

Can stopping save me money on Colorado to Pennsylvania flights?

No. A direct flight is the cheapest option for a flight between Colorado to Pennsylvania.

  • When did momondo last update prices for flights from Colorado to Pennsylvania?

    Prices for flights from Colorado to Pennsylvania are updated daily.

  • How many operators does momondo search for flights from Colorado to Pennsylvania?

  • How old do you have to be to fly from Colorado to Pennsylvania?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado to Pennsylvania.

  • What documentation or ID do you need to fly to Pennsylvania?

    The required travel and health documents for your Pennsylvania 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 Pennsylvania. 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 Colorado to Pennsylvania?

Best airlines flying from Colorado to Pennsylvania

Compare and see reviews for airlines that fly from Colorado to Pennsylvania with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $42Free CancellationRating
5.8
3,237 reviews
Search Frontier flights
Allegiant AirPriceFrom $74Free CancellationRating
7.2
702 reviews
Search Allegiant Air flights
DeltaPriceFrom $128Free CancellationRating
8.0
7,985 reviews
Search Delta flights
American AirlinesPriceFrom $162Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $163Free CancellationRating
7.4
8,905 reviews
Search United Airlines flights
SouthwestPriceFrom $200Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
JetBluePriceFrom $220Free CancellationRating
7.2
2,915 reviews
Search JetBlue flights

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Pennsylvania?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Colorado to Pennsylvania for you.

Can I find flights from Colorado to Pennsylvania with flexible booking policies on momondo?

Yes. All flights to Pennsylvania from Colorado on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Colorado to Pennsylvania?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Pennsylvania from Colorado.

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

If you are simply researching potential flights to Pennsylvania, momondo offers a useful price alert feature which will track prices for flights to Pennsylvania from Colorado and alert you when they change.

An easier way to manage your Pennsylvania trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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