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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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
DLH — PHL
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 September 11, 2025.

Round-trip from

$248
(Delta)

Popular in

November

Cheapest in

June

Average price

$613
From Duluth Intl to Philadelphia
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($151 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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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 September 11, 2025.

This Delta deal was found by Cheapflights users on 9/9. 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.
Sat 12/65:00 amDLH - PHL
1 stop4h 58mDelta
Sat 12/136:15 amPHL - DLH
1 stop6h 05mDelta
Deal found 9/9$263
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Tue 9/3011:20 amDLH - PHL
1 stop5h 15mUnited Airlines
Sat 10/412:50 pmPHL - DLH
1 stop6h 47mUnited Airlines
Deal found 9/10$333
This Delta deal was found by Cheapflights users on 9/11. 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 9/11$343
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 10/3011:14 amDLH - PHL
1 stop5h 15mUnited Airlines
Sun 11/210:05 amPHL - DLH
1 stop5h 26mUnited Airlines
Deal found 9/10$348
This United Airlines deal was found by Cheapflights users on 9/10. 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 11/147:55 amDLH - PHL
1 stop5h 12mUnited Airlines
Sun 11/166:00 amPHL - DLH
1 stop5h 37mUnited Airlines
Deal found 9/10$358
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/811:20 amDLH - PHL
2 stops25h 44mUnited Airlines
Sun 10/126:30 amPHL - DLH
1 stop5h 15mUnited Airlines
Deal found 9/9$428
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/269:45 amDLH - PHL
1 stop27h 31mUnited Airlines
Sun 9/286:30 amPHL - DLH
1 stop5h 15mUnited Airlines
Deal found 9/10$433

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 September 11, 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

Sat 1/17

5:10 am-10:43 am

1 stop4h 33m

Philadelphia

Sat 1/31

6:15 am-11:07 am

1 stop5h 52m

$248

DuluthPhiladelphia

DLH - PHL

DLHPHL

Duluth Intl

Sat 1/17

5:10 am-10:43 am

1 stop4h 33m

Philadelphia

Sun 1/25

6:15 am-11:07 am

1 stop5h 52m

$248

DuluthPhiladelphia

DLH - PHL

DLHPHL

Duluth Intl

Wed 3/4

4:20 pm-11:46 pm

1 stop6h 26m

Philadelphia

Sat 3/7

6:30 pm-11:52 pm

1 stop6h 22m

$248

DuluthPhiladelphia

DLH - PHL

DLHPHL

Duluth Intl

Sat 12/6

5:00 am-10:58 am

1 stop4h 58m

Philadelphia

Sat 12/13

6:15 am-11:20 am

1 stop6h 05m

$263

DuluthPhiladelphia

DLH - PHL

DLHPHL

Duluth Intl

Sat 1/17

5:10 am-10:43 am

1 stop4h 33m

Philadelphia

Mon 1/26

11:45 am-3:24 pm

1 stop4h 39m

$263

DuluthPhiladelphia

DLH - PHL

DLHPHL

Duluth Intl

Sat 11/8

4:10 pm-11:50 pm

1 stop6h 40m

$294

DuluthPhiladelphia

DLH - PHL

DLHPHL

Duluth Intl

Sat 1/3

4:23 pm-11:56 pm

1 stop6h 33m

$449

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

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 September 11, 2025.
Get a feel of what it's like to fly with Delta 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
7,960 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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.

  • How long is the flight from Duluth to Philadelphia?

    For as low as $248, Delta can have you in Philadelphia from Duluth in 4h 33m. The distance between Duluth and Philadelphia is about 975 mi.

  • 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
Reading
Dewey Beach
Ephrata
Camden
Ocean City
Cherry Hill
Dover
Elkton
Essington
Willow Grove
Newark
Millville
Chester
Exton
Havre de Grace
Plymouth Meeting

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Duluth to Philadelphia

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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$248Average$498FlexibilityNo cancel feeOn-timeN/A

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