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$306+ Cheap flights from Philadelphia to Duluth (PHL - DLH)

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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DLH
Feb 10 — Feb 171
Tue 2/10
Tue 2/17
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 January 11, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$302
(Delta)

Popular in

December

Cheapest in

March

Average price

$438
Provider with most accurate pricing for Philadelphia-Duluth Intl flight deals.
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Provider most trusted by Cheapflights users for Philadelphia-Duluth Intl flights.
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From Philadelphia to Duluth Intl
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($105 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 11, 2026.

This Delta deal was found by Cheapflights users on 1/8. 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 2/256:10 amPHL - DLH
1 stop6h 20mDelta
Wed 3/44:15 pmDLH - PHL
1 stop6h 29mDelta
Deal found 1/8$306
This United Airlines deal was found by Cheapflights users on 1/10. 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.
Wed 1/215:00 pmPHL - DLH
1 stop5h 59mUnited Airlines
Wed 1/287:40 amDLH - PHL
1 stop5h 51mUnited Airlines
Deal found 1/10$343
This Delta deal was found by Cheapflights users on 1/9. 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.
Mon 5/113:10 pmPHL - DLH
1 stop5h 16mDelta
Mon 5/184:20 pmDLH - PHL
1 stop6h 20mDelta
Deal found 1/9$364
This Delta deal was found by Cheapflights users on 1/9. 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.
Wed 1/216:57 pmPHL - DLH
1 stop5h 55mDelta
Mon 1/265:00 amDLH - PHL
1 stop4h 31mDelta
Deal found 1/9$393
This Delta deal was found by Cheapflights users on 1/10. 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 1/215:17 pmPHL - DLH
2 stops7h 35mDelta
Wed 1/2811:56 amDLH - PHL
2 stops9h 54mDelta
Deal found 1/10$404
This United Airlines deal was found by Cheapflights users on 1/9. 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.
Sat 1/2410:10 amPHL - DLH
1 stop5h 20mUnited Airlines
Wed 1/287:40 amDLH - PHL
1 stop5h 51mUnited Airlines
Deal found 1/9$413
This Delta deal was found by Cheapflights users on 1/10. 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 1/166:57 pmPHL - DLH
1 stop5h 55mDelta
Fri 1/234:24 pmDLH - PHL
1 stop6h 32mDelta
Deal found 1/10$457
This United Airlines deal was found by Cheapflights users on 1/9. 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.
Thu 1/2210:10 amPHL - DLH
1 stop5h 20mUnited Airlines
Mon 1/263:05 pmDLH - PHL
1 stop5h 31mUnited Airlines
Deal found 1/9$461

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 January 11, 2026.
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

Sun 3/8

6:00 am-11:56 am

1 stop6h 56m

Duluth Intl

Thu 3/19

4:32 pm-11:59 pm

1 stop6h 27m

$306

PhiladelphiaDuluth

PHL - DLH

PHLDLH

Philadelphia

Wed 2/25

6:10 am-11:30 am

1 stop6h 20m

Duluth Intl

Wed 3/4

4:15 pm-11:44 pm

1 stop6h 29m

$306

PhiladelphiaDuluth

PHL - DLH

PHLDLH

Philadelphia

Wed 1/21

6:57 pm-11:52 pm

1 stop5h 55m

Duluth Intl

Mon 1/26

5:00 am-10:31 am

1 stop4h 31m

$393

PhiladelphiaDuluth

PHL - DLH

PHLDLH

Philadelphia

Wed 1/21

5:17 pm-11:52 pm

2 stops7h 35m

Duluth Intl

Wed 1/28

11:56 am-10:50 pm

2 stops9h 54m

$404

PhiladelphiaDuluth

PHL - DLH

PHLDLH

Philadelphia

Sat 1/24

10:10 am-2:30 pm

1 stop5h 20m

Duluth Intl

Wed 1/28

7:40 am-2:31 pm

1 stop5h 51m

$413

PhiladelphiaDuluth

PHL - DLH

PHLDLH

Philadelphia

Tue 1/27

10:10 am-2:30 pm

1 stop5h 20m

Duluth Intl

Tue 2/3

3:05 pm-9:36 pm

1 stop5h 31m

$413

PhiladelphiaDuluth

PHL - DLH

PHLDLH

Philadelphia

Thu 6/18

6:15 am-10:57 am

1 stop5h 42m

$354

PhiladelphiaDuluth

PHL - DLH

PHLDLH

Philadelphia

Fri 6/19

10:15 am-10:44 am

2 stops25h 29m

$537

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/9

Compare providers for flights from Philadelphia to Duluth

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Duluth in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Philadelphia-Duluth flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Philadelphia-Duluth flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Philadelphia-Duluth flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Duluth flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Duluth flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

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 January 11, 2026.
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
7.9
Good
8,039 reviews

Crew

8.5

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

Boarding

8.1

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
7.9
Good
8,039 reviews
Delta
7.9
Good
8,039 reviews

Crew

8.5

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

Boarding

8.1

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
9,144 reviews
Delta
7.9
Good
8,039 reviews

Crew

8.5

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.9

Boarding

8.1

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 $306, Delta can have you in Duluth from Philadelphia in 6h 56m. Philadelphia and Duluth are separated by a distance of 975 mi.

  • 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 47% 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.

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 January 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$248Average$489FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$318Average$559FlexibilityNo cancel feeOn-time69%

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