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$320+ Cheap flights from Portland, ME to Duluth (PWM - 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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — DLH
oct. 19 — oct. 261
dom. 10/19
dom. 10/26
1 adult, Economy
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Cheap flight deals from Portland to Duluth

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) 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 septiembre 19, 2025.

Round-trip from

$320
(United Airlines)

Popular in

May

Cheapest in

January

Average price

$482
From Portland to Duluth Intl
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($85 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Portland to Duluth

Cheapest flights from Portland to Duluth
Explore the most affordable flight options available from Portland to Duluth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 19, 2025.

This United Airlines deal was found by Cheapflights users on 9/18. 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.
sáb. 10/46:14 amPWM - DLH
1 stop5h 29mUnited Airlines
mar. 10/73:07 pmDLH - PWM
1 stop5h 37mUnited Airlines
Deal found 9/18$320
This United Airlines deal was found by Cheapflights users on 9/16. 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.
mié. 10/14:57 pmPWM - DLH
1 stop6h 11mUnited Airlines
dom. 10/58:00 amDLH - PWM
1 stop5h 33mUnited Airlines
Deal found 9/16$467
This United Airlines deal was found by Cheapflights users on 9/16. 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.
sáb. 12/204:10 pmPWM - DLH
1 stop7h 45mUnited Airlines
vie. 12/267:50 amDLH - PWM
1 stop13h 24mUnited Airlines
Deal found 9/16$1,802
This Delta deal was found by Cheapflights users on 9/18. 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.
sáb. 12/2012:56 pmPWM - DLH
2 stops10h 56mDelta
vie. 12/265:00 amDLH - PWM
2 stops10h 01mDelta
Deal found 9/18$2,541

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland 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 septiembre 19, 2025.
Use the filters below to find and compare flights from Portland to Duluth that are best for you.

Fly from

Portland

Fly to

Duluth

Route

Depart

Return

Price

PortlandDuluth

PWM - DLH

PWMDLH

Portland

sáb. 10/4

6:14 am-10:43 am

1 stop5h 29m

Duluth Intl

mar. 10/7

3:07 pm-9:44 pm

1 stop5h 37m

$320

PortlandDuluth

PWM - DLH

PWMDLH

Portland

mié. 10/1

4:57 pm-10:08 pm

1 stop6h 11m

Duluth Intl

dom. 10/5

8:00 am-2:33 pm

1 stop5h 33m

$467

PortlandDuluth

PWM - DLH

PWMDLH

Portland

mar. 3/10

5:30 am-3:24 pm

2 stops10h 54m

Duluth Intl

mié. 3/11

5:10 am-4:15 pm

2 stops10h 05m

$579

PortlandDuluth

PWM - DLH

PWMDLH

Portland

mar. 3/10

6:00 am-10:44 am

1 stop5h 44m

Duluth Intl

mié. 3/11

11:26 am-11:17 pm

2 stops10h 51m

$592

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/18

Best time to book a flight from Portland to Duluth

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

What is the cheapest month to book a flight from Portland, Maine to Duluth?

Currently, January is the cheapest month in which you can book a flight from Portland, Maine to Duluth (average of $339). Flying from Portland, Maine to Duluth in June is currently the most expensive (average of $476). 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 septiembre 19, 2025.
Read reviews from past customers who have flown United Airlines from Portland to Duluth. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,926 reviews

Food

6.6

Boarding

7.7

Overall

7.4

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.
United Airlines
7.4
Good
8,926 reviews
United Airlines
7.4
Good
8,926 reviews

Food

6.6

Boarding

7.7

Overall

7.4

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.

Related info for your journey

Find useful and relevant information for your journey from Portland 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 Portland, Maine to Duluth?

    A quick flight from Portland, Maine to Duluth can take about 5h 29m. United Airlines provides one of the quickest options available for as low as $320. Airlines will cover a distance of 1083 mi.

  • What is the cheapest airline to fly from Portland, Maine to Duluth round-trip?

    Our cheapest airline available from Portland, Maine to Duluth is United Airlines. Our recent data shows that you can find tickets from as low as $340 on this airline. United Airlines is priced at 32% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland 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 Portland, Maine to Duluth?

    Currently, January is the cheapest month in which you can book a flight from Portland, Maine to Duluth (average of $339). Flying from Portland, Maine to Duluth in June is currently the most expensive (average of $476). 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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Top airline flying from Portland to Duluth

Discover the top airline that operate flights from Portland 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 septiembre 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$340Average$653FlexibilityNo cancel feeOn-time69%

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