PHL - DLH

$248 Find Cheap Flights from Philadelphia to Duluth

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Duluth departing on 3/7. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Duluth

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Duluth, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Duluth, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Philadelphia to Duluth (PHL-DLH)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Duluth 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 Philadelphia to Duluth

Sat, Mar 7 - Wed, Mar 11
Delta Logo
6:30 pm - 11:52 pmPHL-DLH
6h 22m1 stop
Delta Logo
12:00 pm - 5:20 pmDLH-PHL
4h 20m1 stop
$248Delta
Find Deal
Wed, Feb 25 - Wed, Mar 4
Delta Logo
9:30 am - 3:24 pmPHL-DLH
6h 54m2 stops
Delta Logo
12:00 pm - 5:20 pmDLH-PHL
4h 20m1 stop
$254Delta
Find Deal
Wed, Feb 25 - Wed, Mar 4
Delta Logo
9:30 am - 3:24 pmPHL-DLH
6h 54m2 stops
Delta Logo
12:00 pm - 12:22 amDLH-PHL
11h 22m2 stops
$309Delta
Find Deal
Sat, Mar 7 - Wed, Mar 11
Delta Logo
6:30 pm - 11:52 pmPHL-DLH
6h 22m1 stop
Delta Logo
12:00 pm - 12:22 amDLH-PHL
11h 22m2 stops
$328Delta
Find Deal
Wed, Feb 25 - Wed, Mar 4
Delta Logo
9:30 am - 3:24 pmPHL-DLH
6h 54m2 stops
Delta Logo
12:00 pm - 12:22 amDLH-PHL
11h 22m2 stops
$333Delta
Find Deal
Fri, Sep 26 - Mon, Sep 29
Delta Logo
6:00 am - 10:07 amPHL-DLH
5h 07m1 stop
Delta Logo
4:20 pm - 11:55 pmDLH-PHL
6h 35m1 stop
$343Delta
Find Deal
Sat, Mar 7 - Wed, Mar 11
Delta Logo
6:00 am - 7:37 pmPHL-DLH
14h 37m2 stops
Delta Logo
12:00 pm - 5:20 pmDLH-PHL
4h 20m1 stop
$357Delta
Find Deal
Mon, Sep 22 - Mon, Sep 29
Delta Logo
6:00 am - 10:07 amPHL-DLH
5h 07m1 stop
Delta Logo
4:20 pm - 11:55 pmDLH-PHL
6h 35m1 stop
$383Delta
Find Deal
Tue, Nov 11 - Wed, Nov 12
United Airlines Logo
8:08 am - 9:59 pmPHL-DLH
14h 51m2 stops
United Airlines Logo
3:06 pm - 11:03 pmDLH-PHL
6h 57m1 stop
$526United Airlines
Find Deal
Thu, Sep 25 - Mon, Sep 29
United Airlines Logo
12:50 pm - 6:37 pmPHL-DLH
6h 47m1 stop
United Airlines Logo
3:07 pm - 2:04 pmDLH-PHL
21h 57m2 stops
$533United Airlines
Find Deal

Everything you should know

Top airlines
Delta
Cheapest • from $248 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$248
Delta
Sat 3/7Wed 3/11
PHL - DLH • 1 stop
Cheapest one-way
$294
Delta
Tue 11/4
PHL - DLH • 1 stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Duluth!
Booking Insights

KAYAK's insights & trends for Philadelphia to Duluth flights

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

What’s the cheapest day of the week to fly from Philadelphia to Duluth?

The average price of all round-trip flights from Philadelphia to Duluth clicked on KAYAK for each day over the last 12 months.

For Philadelphia to Duluth, Saturday is the cheapest day to fly on average and Monday is the most expensive. Flying from Duluth back to Philadelphia, the best deals are generally found on Thursday, with Friday being the most expensive.

Good to know

Cheapest flight$248
Most popular time to fly with an average 16% increase in price.
Flight from Philadelphia to Duluth

When to book flights from Philadelphia to Duluth

Are your dates flexible? Find out the best times to travel from Philadelphia to Duluth 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 Philadelphia to Duluth

  • What is the cheapest flight from Philadelphia to Duluth?

    In the last 3 days, the lowest price for a flight from Philadelphia to Duluth was $294 for a one-way ticket and $248 for a round-trip.

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

    No

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

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

  • Which airline alliances offer flights from Philadelphia to Duluth?

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

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

    The two airlines most popular with KAYAK users for flights from Philadelphia to Duluth are Delta and United Airlines. With an average price for the route of $443 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $597 and an overall rating of 7.4.

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

    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 Philadelphia to Duluth.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Duluth from Philadelphia 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 Philadelphia to Duluth?

    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 Duluth with an airline and back to Philadelphia with another airline. Booking your flights between Philadelphia and DLH 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 Philadelphia to Duluth?

    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 Duluth from Philadelphia 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 Philadelphia to Duluth

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Duluth. 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 Philadelphia to Duluth? 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.
7.9
DeltaOverall score based on 7960 reviews
7.9Comfort
8.5Crew
8.2Boarding
7.3Food
7.9Entertainment
Airline reviews

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

8.0 ExcellentDwight, Aug 2025DEN - MSP
Read more Delta reviews

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

It was beautiful easy and smooth experience. Thank you. Will definitely get Delta for my next travel.

No one fussed at me about my pap machine as a 3rd pice on the plane. Boarding was pleasant and smooth. The boarding agent in Anchorage was a fun character- he could be in a movie. :~) The on-board crew were downright pleasant. No militant attitudes on Delta. Like all planes these days the seats are too narrow for standard Americans and at 5’2” there is barely enough leg room. I don’t know how tall people fold themselves into the seats. But that’s nothing specific to Delta

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Delta is better for short flights and very low need for customer service. Avoid for longer flights

Delta is a premier airline so my expectations are most always met.

Great service. Great staff. Boarding was a little slow, but I think there was a service dog slowing things down.

Everything was good except when we're on a 6 hour flight at dinner time and all they offer as part of the fare are little bags of junk food, it's disappointing. Bring back food service without an added price.

Left on time and arrived early this extending our 31 minute transfer. Bags made it also!

I love my flight attendant Faith, always smiles always helpful. She makes the flight experience wonderful thank you

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

IAD with the archaic people movers is just a place to be avoided.

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

I flew with my dog and had already purchased my dog’s ticket. Even that morning I had called costumer service to insure that my husband and I had seats together since the website was giving me an error when choosing our seats and the representative mentioned our dog. I showed up early to the airport and when I got to the gate and we started boarding I was help back and told that I was supposed to have a yellow tag and that I should have checked in at the counter for them to give me that tag. I was not aware of this, the representative on the phone did not say anything. Nor did I see it anywhere in the checking process online, so if you travel with a pet and are not checking in luggage, just know that you still have to go to the check in counter when arriving at the airport unless you want to be the last one to board and not have room for your carry on in the overhead bins. Other than that, I had a great experience.

Once we got in the air the pilot made up some of the time of the delay. So that was really nice.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

There was no food available for this red eye... one little waffle cookie for a 6+ hour flight... thank God I was able to sleep some

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.