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$248+ Cheap flights from Duluth to Philadelphia (DLH - PHL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
DLH — PHL
Aug 12 — Aug 191
Tue 8/12
Tue 8/19
1 adult, Economy
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Cheap flight deals from Duluth to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Duluth (DLH) to Philadelphia (PHL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 7, 2025.

Round-trip from

$248
(Delta)

Popular in

October

Cheapest in

June

Average price

$632
From Duluth Intl to Philadelphia
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($158 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find flight deals from Duluth to Philadelphia

Cheapest flights from Duluth to Philadelphia
Explore the most affordable flight options available from Duluth to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 7, 2025.

This Delta deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/264:20 pmDLH - PHL
1 stop6h 35mDelta
Sun 9/286:00 amPHL - DLH
1 stop5h 07mDelta
Deal found 8/7$248
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/153:03 pmDLH - PHL
1 stop5h 32mUnited Airlines
Fri 8/225:18 pmPHL - DLH
1 stop5h 47mUnited Airlines
Deal found 8/6$414
This United Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/209:45 amDLH - PHL
1 stop6h 44mUnited Airlines
Sun 8/246:30 amPHL - DLH
1 stop5h 15mUnited Airlines
Deal found 8/5$432
This Delta deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/215:10 amDLH - PHL
1 stop4h 29mDelta
Mon 8/256:00 amPHL - DLH
1 stop5h 15mDelta
Deal found 8/6$488
This United Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/223:10 pmDLH - PHL
1 stop5h 21mUnited Airlines
Sun 8/246:30 amPHL - DLH
1 stop5h 15mUnited Airlines
Deal found 8/7$498
This Delta deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/305:10 amDLH - PHL
1 stop4h 24mDelta
Tue 9/306:51 pmPHL - DLH
1 stop4h 52mDelta
Deal found 8/7$508
This Delta deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/224:19 pmDLH - PHL
2 stops7h 37mDelta
Sun 8/246:00 amPHL - DLH
1 stop5h 15mDelta
Deal found 8/7$558

Cheapflights Fare Finder

 
Customize your flight search to find flights from Duluth to Philadelphia 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, Cheapflights users made 2,558,603 searches. Data last updated August 7, 2025.
Use the filters below to find and compare flights from Duluth to Philadelphia that are best for you.

Fly from

Duluth

Fly to

Philadelphia

Route

Depart

Return

Price

DuluthPhiladelphia

DLH - PHL

DLHPHL

Duluth Intl

Fri 9/26

4:20 pm-11:55 pm

1 stop6h 35m

Philadelphia

Sun 9/28

6:00 am-10:07 am

1 stop5h 07m

$248

DuluthPhiladelphia

DLH - PHL

DLHPHL

Duluth Intl

Wed 8/20

9:45 am-5:29 pm

1 stop6h 44m

Philadelphia

Sun 8/24

6:30 am-10:45 am

1 stop5h 15m

$432

DuluthPhiladelphia

DLH - PHL

DLHPHL

Duluth Intl

Thu 8/21

5:10 am-10:39 am

1 stop4h 29m

Philadelphia

Mon 8/25

6:00 am-10:15 am

1 stop5h 15m

$488

DuluthPhiladelphia

DLH - PHL

DLHPHL

Duluth Intl

Fri 8/22

3:10 pm-9:31 pm

1 stop5h 21m

Philadelphia

Sun 8/24

6:30 am-10:45 am

1 stop5h 15m

$498

DuluthPhiladelphia

DLH - PHL

DLHPHL

Duluth Intl

Tue 9/30

5:10 am-10:34 am

1 stop4h 24m

Philadelphia

Tue 9/30

6:51 pm-10:43 pm

1 stop4h 52m

$508

DuluthPhiladelphia

DLH - PHL

DLHPHL

Duluth Intl

Fri 8/22

4:19 pm-12:56 am

2 stops7h 37m

Philadelphia

Sun 8/24

6:00 am-10:15 am

1 stop5h 15m

$558

DuluthPhiladelphia

DLH - PHL

DLHPHL

Duluth Intl

Thu 8/21

9:45 am-5:21 pm

1 stop6h 36m

Philadelphia

Mon 8/25

7:58 pm-2:35 pm

2 stops19h 37m

$606

DuluthPhiladelphia

DLH - PHL

DLHPHL

Duluth Intl

Sat 11/8

4:10 pm-11:49 pm

1 stop6h 39m

$284

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/7

Best time to book a flight from Duluth to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Duluth with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Duluth to Philadelphia

What is the cheapest month to book a flight from Duluth to Philadelphia?

Currently, August is the cheapest month in which you can book a flight from Duluth to Philadelphia (average of $236). Flying from Duluth to Philadelphia in March is currently the most expensive (average of $295). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Philadelphia. Reviews last updated August 7, 2025.
Get a feel of what it's like to fly with Delta and United Airlines from Duluth to Philadelphia by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,987 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,987 reviews
Delta
8.0
Very good
7,987 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,916 reviews
Delta
8.0
Very good
7,987 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Duluth to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What is the cheapest airline to fly from Duluth to Philadelphia round-trip?

    According to our current data, Delta ($248), offers the cheapest pricing from Duluth to Philadelphia. You may be able to fly from Duluth to Philadelphia for 51% less than the average price by searching for this airline.

  • Can I find deals for flights from Duluth to Philadelphia that include hotel bookings?

    Yes. In addition to deals on Duluth to Philadelphia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Duluth to Philadelphia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Duluth to Philadelphia.

  • Can I find deals for business class flights from Duluth to Philadelphia?

    Yes. Cheapflights offers flight deals from Duluth to Philadelphia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Duluth to Philadelphia?

    Currently, August is the cheapest month in which you can book a flight from Duluth to Philadelphia (average of $236). Flying from Duluth to Philadelphia in March is currently the most expensive (average of $295). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Vineland
Wildwood
King of Prussia
Pottstown
Cherry Hill
Ocean City
Chester
Reading
Millville
Ephrata
Camden
Dewey Beach
Dover
Elkton
Essington
Willow Grove
Newark
Exton
Glen Mills
Springfield

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Duluth to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Duluth to Philadelphia

Discover the top airline that operate flights from Duluth to Philadelphia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 7, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$248Average$528FlexibilityNo cancel feeOn-timeN/A

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