DLH - PHL

$303 Find Cheap Flights from Duluth to Philadelphia - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Duluth to Philadelphia departing on 8/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$318
Overall average: $402
Delta
Wed 9/16Tue 9/22
DLH - PHL • 1 stop
Cheapest one-way
$303
United Airlines
Sun 8/23
DLH - PHL • 1 stop
Top airlines
Cheapest • from $318 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Duluth and Philadelphia. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $470 (round-trip)
Shortest trip • 5h 07m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 30% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Philadelphia!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Duluth to Philadelphia (DLH-PHL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Duluth to Philadelphia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Duluth to Philadelphia

Wed, Sep 16 - Tue, Sep 22
Delta Logo
11:43 am - 6:04 pm
DLH
-
PHL
5h 21m
1 stop
Delta Logo
5:45 am - 11:03 am
PHL
-
DLH
6h 18m
1 stop
$318Delta
Thu, Aug 20 - Fri, Sep 11
Delta Logo
4:11 pm - 11:56 pm
DLH
-
PHL
6h 45m
1 stop
Delta Logo
5:45 am - 11:03 am
PHL
-
DLH
6h 18m
1 stop
$318Delta
Thu, Aug 27 - Sun, Sep 6
Delta Logo
4:11 pm - 11:56 pm
DLH
-
PHL
6h 45m
1 stop
Delta Logo
6:54 pm - 10:41 pm
PHL
-
DLH
4h 47m
1 stop
$318Delta
Thu, Sep 3 - Tue, Sep 8
Delta Logo
4:11 pm - 11:56 pm
DLH
-
PHL
6h 45m
1 stop
Delta Logo
6:59 pm - 10:35 pm
PHL
-
DLH
4h 36m
1 stop
$338Delta
Wed, Sep 16 - Tue, Sep 22
Delta Logo
11:43 am - 6:04 pm
DLH
-
PHL
5h 21m
1 stop
Delta Logo
5:45 am - 11:03 am
PHL
-
DLH
6h 18m
1 stop
$338Delta
Thu, Aug 27 - Sun, Sep 6
Delta Logo
4:11 pm - 11:56 pm
DLH
-
PHL
6h 45m
1 stop
Delta Logo
6:54 pm - 10:41 pm
PHL
-
DLH
4h 47m
1 stop
$338Delta
Wed, Oct 21 - Sat, Oct 24
Delta Logo
12:35 pm - 6:21 pm
DLH
-
PHL
4h 46m
1 stop
Delta Logo
7:15 pm - 10:57 pm
PHL
-
DLH
4h 42m
1 stop
$338Delta
Thu, Aug 27 - Sun, Sep 6
United Airlines Logo
6:23 pm - 12:59 am
DLH
-
PHL
5h 36m
1 stop
United Airlines Logo
3:05 pm - 11:22 pm
PHL
-
DLH
9h 17m
2 stops
$360United Airlines
Mon, Aug 24 - Mon, Aug 31
United Airlines Logo
6:23 pm - 12:59 am
DLH
-
PHL
5h 36m
1 stop
United Airlines Logo
6:56 pm - 11:22 pm
PHL
-
DLH
5h 26m
1 stop
$398United Airlines
Sat, Aug 15 - Wed, Aug 19
United Airlines Logo
6:23 pm - 12:59 am
DLH
-
PHL
5h 36m
1 stop
United Airlines Logo
5:01 pm - 11:22 pm
PHL
-
DLH
7h 21m
1 stop
$448United Airlines
Booking Insights

KAYAK's insights & trends for Duluth to Philadelphia flights

Get data-powered insights and trends into flights from Duluth to Philadelphia to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Duluth to Philadelphia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Duluth to Philadelphia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Duluth to Philadelphia is November, where tickets cost $357 (return) on average. On the other hand, the most expensive months are August and October, where the average cost of round-trip tickets is $872 and $643 respectively.

Good to know

Low season

August

Cheapest flight

$303
Best time to beat the crowds but there is an average 71% increase in price.
Most popular time to fly and prices are also 27% lower on average.
Flight from Duluth to Philadelphia

When to book flights from Duluth to Philadelphia

Are your dates flexible? Find out the best times to travel from Duluth to Philadelphia based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Duluth to Philadelphia

  • What is the cheapest flight from Duluth to Philadelphia?

    In the last 5 days, the lowest price for a flight from Duluth to Philadelphia was $303 for a one-way ticket and $318 for a round-trip.

  • Do I need a passport to fly between Duluth and Philadelphia?

    No, a passport isn't needed to fly from Duluth to Philadelphia. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Duluth to Philadelphia?

    On your way to Philadelphia, you’ll fly out from Duluth Intl. You’ll be landing at Philadelphia.

  • Which aircraft models fly most regularly from Duluth to Philadelphia?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Duluth to Philadelphia?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Duluth and Philadelphia, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Duluth to Philadelphia, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Duluth to Philadelphia are Delta and United Airlines. With an average price for the route of $402 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $502 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Duluth to Philadelphia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Duluth to Philadelphia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Duluth to Philadelphia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Philadelphia from Duluth is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Duluth to Philadelphia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Philadelphia with an airline and back to Duluth with another airline. Booking your flights between Duluth and PHL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Duluth to Philadelphia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Philadelphia from Duluth up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Duluth to Philadelphia

 
See real verified KAYAK customer reviews for airlines flying from Duluth to Philadelphia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Duluth to Philadelphia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
DeltaOverall score based on 8501 reviews
7.8Entertainment
8.1Boarding
7.8Comfort
7.2Food
8.5Crew
Airline reviews

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

4.0 OkayMichelle, Jun 2026
ATL - PIT
Read more Delta reviews

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

My tray was broken so i had no place to work or eat except my lap. Flight attendant said I would get an email with some credit or miles, it was a complete waste of time as I could only function at about 20% of normal. I have not received anything yet.

Delayed. Hot. Passenger next to me was so large I couldn’t move.

2+hrs delay without any reason provided and a cramped flight

Originally, I was booked in economy. I paid several hundred additional dollars to upgrade to first class. Then I paid several more hundred dollars to change my flight to a slightly earlier flight. I asked if the changed flight would also seat me in first class, and I was told that it would. When I boarded the plane, however, I was seated in economy. So, I paid $500-600 more than I paid for my original ticket for an upgrade and a changed flight - received the changed flight (which was nice), but did not receive the upgrade. So, I was not completely satisfied.

I noticed that the planes seem to be outdated. There was no entertainment per se. Also, the waiting area did not have any working electrical outlets

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

This was the second flight this week with flight attendant Marcus I’m not sure if his last name is Lane or Lang but this guy is awesome. He funny, attentive and his service is 5 stars. Marcus makes business travel more enjoyable !

My seat was moved closer to the front of the cabin since I had requested wheelchair assistance to the gate.

Carly the flight attendant was extremely helpful and very accommodating to passengers on the flight from what I noticed. Couldn't be more satisfied with the service and assistance from Delta's flight attendant, Thanks again Carly!!

The Wi-Fi did not work, so you weren't able to watch entertainment on your own device. They did not have wired headphones so you couldn't watch it on the in-seat entertainment screen either. There was plenty of time to do a drink and snag service but the flight attendants chose not to.

Late- that’s what United does best. Missed my connection, rebooked to a flight 17 hours later and had to spend $500 on a hotel. What did I get? A $15 meal voucher. What can you get in an airport for $15. I hate United so much.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Everything went well except the turbulence what no one have a control of but pilot and crew handled very good!

The aircrew was solid, the flight was chill, I had no issues. The gate agent was not the best. I was trying to use a military bag upgrade to move my bag from under the seat to the overhead bins and he told me there’s no overhead bins on the plane, argued with me why booking put a military member in basic economy (I don’t really understand this) and made it an issue to even try to help me stating I’d have to call reservations to get a bag upgrade. When every other agent with United can add it at the gate, this man couldn’t be bothered.

I still prefer Delta, but Delta doesn’t fly to State College PA.

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

Nothing bad to say about the actual crew or airline. It was nice to have a complimentary FULL can of soda, as well as a snack. Blankets and earbuds were also provided at no cost for this red eye flight. I especially appreciated the free WiFi and movie selection with the Bluetooth option. It helped the flight pass more quickly. No matter who you fly, boarding and disembarking are always SUCH a pain. As I mentioned, this is on the passengers and not the crew!!

Flight attendants rude and impolite… flight delayed by almost 5 hours.

Ok so apparently the new policy on United Airlines is that customers in the main cabin should NEVER be served more than once and besides picking up trash there should NEVER be another interaction with the customer for any reason.

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

Information on your arrival and departure airports