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$294+ Cheap flights from Philadelphia to Duluth (PHL - DLH)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DLH
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Philadelphia to Duluth

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Duluth (DLH). 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

January

Average price

$559
From Philadelphia to Duluth Intl
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Philadelphia to Duluth

Cheapest flights from Philadelphia to Duluth
Explore the most affordable flight options available from Philadelphia to Duluth. 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 9/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/266:00 amPHL - DLH
1 stop5h 07mDelta
Mon 9/294:20 pmDLH - PHL
1 stop6h 35mDelta
Deal found 9/10$343
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/226:00 amPHL - DLH
1 stop5h 07mDelta
Mon 9/294:20 pmDLH - PHL
1 stop6h 35mDelta
Deal found 9/10$383
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:00 amPHL - DLH
1 stop5h 07mDelta
Mon 9/294:20 pmDLH - PHL
1 stop6h 35mDelta
Deal found 9/10$408
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 11/118:08 amPHL - DLH
2 stops14h 51mUnited Airlines
Wed 11/123:06 pmDLH - PHL
1 stop6h 57mUnited Airlines
Deal found 9/10$526
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/116:00 amPHL - DLH
1 stop6h 21mDelta
Wed 11/128:14 amDLH - PHL
1 stop4h 42mDelta
Deal found 9/10$528
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 9/2512:50 pmPHL - DLH
1 stop6h 47mUnited Airlines
Mon 9/293:07 pmDLH - PHL
2 stops21h 57mUnited Airlines
Deal found 9/10$533
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/116:00 amPHL - DLH
1 stop6h 21mDelta
Thu 11/135:10 amDLH - PHL
1 stop4h 41mDelta
Deal found 9/10$588
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.
Mon 9/225:15 pmPHL - DLH
1 stop5h 50mUnited Airlines
Mon 9/293:07 pmDLH - PHL
2 stops21h 57mUnited Airlines
Deal found 9/10$602
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/246:00 amPHL - DLH
1 stop5h 07mDelta
Fri 9/2610:50 amDLH - PHL
1 stop26h 12mDelta
Deal found 9/10$607

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to Duluth 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 Philadelphia to Duluth that are best for you.

Fly from

Philadelphia

Fly to

Duluth

Route

Depart

Return

Price

PhiladelphiaDuluth

PHL - DLH

PHLDLH

Philadelphia

Fri 9/26

6:00 am-10:07 am

1 stop5h 07m

Duluth Intl

Mon 9/29

4:20 pm-11:55 pm

1 stop6h 35m

$343

PhiladelphiaDuluth

PHL - DLH

PHLDLH

Philadelphia

Tue 11/11

8:08 am-9:59 pm

2 stops14h 51m

Duluth Intl

Thu 11/13

3:06 pm-9:21 pm

1 stop5h 15m

$526

PhiladelphiaDuluth

PHL - DLH

PHLDLH

Philadelphia

Tue 11/11

8:08 am-9:59 pm

2 stops14h 51m

Duluth Intl

Wed 11/12

3:06 pm-11:03 pm

1 stop6h 57m

$526

PhiladelphiaDuluth

PHL - DLH

PHLDLH

Philadelphia

Tue 11/11

6:59 pm-11:50 pm

1 stop5h 51m

Duluth Intl

Thu 11/13

5:10 am-10:51 am

1 stop4h 41m

$528

PhiladelphiaDuluth

PHL - DLH

PHLDLH

Philadelphia

Tue 11/11

6:00 am-11:21 am

1 stop6h 21m

Duluth Intl

Wed 11/12

8:14 am-1:56 pm

1 stop4h 42m

$528

PhiladelphiaDuluth

PHL - DLH

PHLDLH

Philadelphia

Wed 9/24

6:00 am-10:07 am

1 stop5h 07m

Duluth Intl

Fri 9/26

10:50 am-2:02 pm

1 stop26h 12m

$607

PhiladelphiaDuluth

PHL - DLH

PHLDLH

Philadelphia

Fri 9/26

6:42 pm-6:37 pm

1 stop24h 55m

Duluth Intl

Mon 9/29

3:07 pm-6:57 pm

2 stops26h 50m

$676

PhiladelphiaDuluth

PHL - DLH

PHLDLH

Philadelphia

Tue 11/4

11:49 am-3:30 pm

1 stop4h 41m

$294

PhiladelphiaDuluth

PHL - DLH

PHLDLH

Philadelphia

Fri 10/24

7:00 pm-11:42 pm

1 stop5h 42m

$458

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Best time to book a flight from Philadelphia to Duluth

Have a flexible travel schedule? Discover the best time to fly to Duluth from Philadelphia 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 Philadelphia to Duluth

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

Currently, January is the cheapest month in which you can book a flight from Philadelphia to Duluth (average of $339). Flying from Philadelphia to Duluth in June is currently the most expensive (average of $477). 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 Duluth

Get insights into the airlines that provide service to Duluth. 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 Duluth. Reviews last updated September 11, 2025.
Read through reviews of airlines operating flights from Philadelphia to Duluth, such as Delta and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Marie Antonette,Sep 2023

CDG - MSP

The actual flight out of MSP was great. However, it was delayed by an hour and we didn’t have anyone at our gate to provide any information until boarding.
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Marie Antonette,Sep 2023

CDG - MSP

The actual flight out of MSP was great. However, it was delayed by an hour and we didn’t have anyone at our gate to provide any information until boarding.
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Marie Antonette,Sep 2023

CDG - MSP

The actual flight out of MSP was great. However, it was delayed by an hour and we didn’t have anyone at our gate to provide any information until boarding.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Duluth. 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 Philadelphia to Duluth?

    For as low as $343, Delta can have you in Duluth from Philadelphia in 5h 07m. Philadelphia and Duluth are separated by a distance of 975 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Philadelphia to Duluth round-trip?

    Cheapflights users have booked flights from Philadelphia to Duluth round-trip from $248. Another airline that can offer you cheap pricing is United Airlines. Delta is currently priced 45% below the average price you’ll pay for this route.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Philadelphia to Duluth 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 Philadelphia to Duluth?

    Currently, January is the cheapest month in which you can book a flight from Philadelphia to Duluth (average of $339). Flying from Philadelphia to Duluth in June is currently the most expensive (average of $477). 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 Duluth?

Book flights to Duluth if you plan to visit one of these locations
Two Harbors
Superior

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Alternative routes for Philadelphia to Duluth

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Philadelphia to Duluth

Discover the top 2 airlines that operate flights from Philadelphia to Duluth. 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$443FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$373Average$597FlexibilityNo cancel feeOn-time69%

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