What is the cheapest airline that flies from Portland to Duluth Intl?

Delta and United Airlines are the most popular carriers operating from Portland to Duluth Intl

When did momondo last update prices for flights from Portland Airport to Duluth Intl Airport?

Prices for flights from Portland Airport to Duluth Intl Airport refresh daily.

How many operators does momondo search for flights from Portland Airport to Duluth Intl Airport?

There are 2 operators available for flights from Portland Airport to Duluth Intl Airport as of November 2025.

How old do you have to be to fly from Portland Airport to Duluth Intl Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Duluth Intl Airport.

What documentation or ID do you need to fly to Duluth Intl Airport?

The required travel and health documents for your Duluth Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Duluth Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$164 Cheap Flights from Portland to Duluth in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Portland to Duluth

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:45 am - 9:59 pmPDX-DLH

12h 14m2 stops

3:05 pm - 10:32 pmDLH-PDX

9h 27m1 stop

$274United Airlines

Find Deal

Wed, Jan 7 - Fri, Jan 16

7:45 am - 9:59 pmPDX-DLH

12h 14m2 stops

3:05 pm - 12:31 amDLH-PDX

11h 26m2 stops

$280United Airlines

Find Deal

Wed, Jan 7 - Fri, Jan 16

1:59 pm - 11:59 pmPDX-DLH

8h 00m1 stop

4:24 pm - 8:52 pmDLH-PDX

6h 28m1 stop

$328Delta

Find Deal

Sat, Dec 6 - Sat, Dec 13

5:30 am - 7:35 pmPDX-DLH

12h 05m2 stops

4:24 pm - 10:37 pmDLH-PDX

8h 13m2 stops

$331Delta

Find Deal

Sat, Dec 6 - Sat, Dec 13

1:59 pm - 11:59 pmPDX-DLH

8h 00m1 stop

7:45 am - 7:31 pmDLH-PDX

13h 46m2 stops

$334Delta

Find Deal

Sat, Dec 6 - Sat, Dec 13

1:30 pm - 11:52 pmPDX-DLH

8h 22m2 stops

11:56 am - 8:59 pmDLH-PDX

11h 03m2 stops

$337Delta

Find Deal

Wed, Jan 7 - Wed, Jan 14

11:55 pm - 9:44 amPDX-DLH

7h 49m1 stop

11:26 am - 7:00 pmDLH-PDX

9h 34m1 stop

$338United Airlines

Find Deal

Sat, Mar 7 - Wed, Mar 11

11:55 pm - 9:44 amPDX-DLH

7h 49m1 stop

11:26 am - 8:49 pmDLH-PDX

11h 23m2 stops

$344United Airlines

Find Deal

Sat, Mar 7 - Wed, Mar 11

9:20 am - 7:35 pmPDX-DLH

8h 15m2 stops

11:56 am - 8:59 pmDLH-PDX

11h 03m2 stops

$352Delta

Find Deal

Wed, Jan 7 - Thu, Jan 15

10:47 am - 9:59 pmPDX-DLH

9h 12m1 stop

3:05 pm - 10:32 pmDLH-PDX

9h 27m1 stop

$357United Airlines

Find Deal

Wed, Jan 7 - Fri, Jan 16

United Airlines flights from Portland to Duluth

Our best United Airlines deals on Portland to Duluth flight tickets

United Airlines

Jan 7

PDX7:45 amPortland

12h 14m

2 stops

DLH9:59 pmDuluth Intl

Jan 16

DLH3:05 pmDuluth Intl

9h 27m

1 stop

PDX10:32 pmPortland

$274

Find similar

United Airlines

Jan 7

PDX7:45 amPortland

12h 14m

2 stops

DLH9:59 pmDuluth Intl

Jan 16

DLH3:05 pmDuluth Intl

11h 26m

2 stops

PDX12:31 amPortland

$280

Find similar

United Airlines

Mar 7

PDX11:55 pmPortland

7h 49m

1 stop

DLH9:44 amDuluth Intl

Mar 11

DLH11:26 amDuluth Intl

9h 34m

1 stop

PDX7:00 pmPortland

$338

Find similar

Delta flights from Portland to Duluth

Our best Delta deals on Portland to Duluth flight tickets

Delta

Dec 6

PDX1:59 pmPortland

8h 00m

1 stop

DLH11:59 pmDuluth Intl

Dec 13

DLH4:24 pmDuluth Intl

6h 28m

1 stop

PDX8:52 pmPortland

$328

Find similar

Delta

Dec 6

PDX5:30 amPortland

12h 05m

2 stops

DLH7:35 pmDuluth Intl

Dec 13

DLH4:24 pmDuluth Intl

8h 13m

2 stops

PDX10:37 pmPortland

$331

Find similar

Delta

Dec 6

PDX1:59 pmPortland

8h 00m

1 stop

DLH11:59 pmDuluth Intl

Dec 13

DLH7:45 amDuluth Intl

13h 46m

2 stops

PDX7:31 pmPortland

$334

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandDuluth

PDX - DLH

PDXDLH

Portland

Wed 1/7

7:45 am-9:59 pm

2 stops12h 14m

Duluth Intl

Fri 1/16

3:05 pm-10:32 pm

1 stop9h 27m

$274

PortlandDuluth

PDX - DLH

PDXDLH

Portland

Wed 1/7

7:45 am-9:59 pm

2 stops12h 14m

Duluth Intl

Fri 1/16

3:05 pm-12:31 am

2 stops11h 26m

$280

PortlandDuluth

PDX - DLH

PDXDLH

Portland

Sat 12/6

1:59 pm-11:59 pm

1 stop8h 00m

Duluth Intl

Sat 12/13

4:24 pm-8:52 pm

1 stop6h 28m

$328

PortlandDuluth

PDX - DLH

PDXDLH

Portland

Sat 12/6

5:30 am-7:35 pm

2 stops12h 05m

Duluth Intl

Sat 12/13

4:24 pm-10:37 pm

2 stops8h 13m

$331

PortlandDuluth

PDX - DLH

PDXDLH

Portland

Sat 12/6

1:59 pm-11:59 pm

1 stop8h 00m

Duluth Intl

Sat 12/13

7:45 am-7:31 pm

2 stops13h 46m

$334

PortlandDuluth

PDX - DLH

PDXDLH

Portland

Wed 1/7

1:30 pm-11:52 pm

2 stops8h 22m

Duluth Intl

Wed 1/14

11:56 am-8:59 pm

2 stops11h 03m

$337

PortlandDuluth

PDX - DLH

PDXDLH

Portland

Sat 3/7

11:55 pm-9:44 am

1 stop7h 49m

Duluth Intl

Wed 3/11

11:26 am-7:00 pm

1 stop9h 34m

$338

PortlandDuluth

PDX - DLH

PDXDLH

Portland

Sat 3/7

11:55 pm-9:44 am

1 stop7h 49m

Duluth Intl

Wed 3/11

11:26 am-8:49 pm

2 stops11h 23m

$344

PortlandDuluth

PDX - DLH

PDXDLH

Portland

Wed 1/7

9:20 am-7:35 pm

2 stops8h 15m

Duluth Intl

Thu 1/15

11:56 am-8:59 pm

2 stops11h 03m

$352

PortlandDuluth

PDX - DLH

PDXDLH

Portland

Wed 1/7

10:47 am-9:59 pm

1 stop9h 12m

Duluth Intl

Fri 1/16

3:05 pm-10:32 pm

1 stop9h 27m

$357

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portland to Duluth

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Duluth?

The cheapest month to fly to Duluth from Portland is in April. Flight prices, which tend to average around $282, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of April, then book flights to Duluth from Portland during March instead. Flights to Duluth in March, while not as cheap as those in April, still average around $343.

What is the cheapest day to depart on your flight to Duluth?

The cheapest day to depart from Portland to Duluth is on a Saturday when prices can be found for as low as $364. On the other hand, Thursday is the most expensive day to depart from Portland because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $520.

What is the cheapest time of day to depart on your flight to Duluth?

Flying to Duluth from Portland in the evening is the least expensive time of day to depart. momondo users have found prices as low as $392 when looking at flights departing in the evening. In contrast, the most expensive time of day to depart to Duluth is at noon when prices are around $680.

Can stopping save me money on Portland to Duluth flights?

You could potentially save up to 16% on your flight if you consider stops on a Portland to Duluth flight.

When to book flights from Portland to Duluth

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Duluth according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Portland to Duluth (PDX to DLH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Duluth

Direct flights	None

There are no direct flights from Portland to Duluth. There are no popular flight routes from Portland to Duluth.

Search flight deals

How far is Portland to Duluth Intl by plane?
There are 1455.5 mi between Portland and Duluth Intl. Flights usually cover this in 7h 37m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Portland Airport to Duluth Intl Airport?
Prices for flights from Portland Airport to Duluth Intl Airport refresh daily.
How many operators does momondo search for flights from Portland Airport to Duluth Intl Airport?
There are 2 operators available for flights from Portland Airport to Duluth Intl Airport as of November 2025.
How old do you have to be to fly from Portland Airport to Duluth Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Duluth Intl Airport.
What documentation or ID do you need to fly to Duluth Intl Airport?
The required travel and health documents for your Duluth Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Duluth Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Portland to Duluth?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Portland to Duluth is Delta (86% of total bookings). The next most popular airline is United Airlines (14%).

Best airlines flying from Portland to Duluth

Compare and see reviews for airlines that fly from Portland to Duluth with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $263	Free Cancellation	Rating 7.9 8,002 reviews		Search Delta flights
United Airlines	PriceFrom $384	Free Cancellation	Rating 7.4 9,012 reviews		Search United Airlines flights

Two Harbors

Hayward

Superior

Cloquet

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Duluth?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Portland to Duluth for you.

Can I find flights from Portland to Duluth with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Duluth from Portland with this policy.

How can momondo help me find flights from Portland to Duluth?

momondo helps you find the best flight between Portland and Duluth by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Portland to Duluth right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Duluth, momondo offers a useful price alert feature which will track prices for flights to Duluth from Portland and alert you when they change.