$178 Cheap Flights from Washington (IAD) to Duluth (DLH)

View $178 flight on Thu, Oct 2, 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Duluth, MN (DLH-Duluth Intl.)

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Cheap Flights from Washington to Duluth (IAD-DLH)

Prices were available within the past 7 days and start at $178 for one-way flights and $248 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Jan 13 - Thu, Jan 22
IAD
Washington
DLH
Duluth
$248 Roundtrip, found 3 days ago
$248
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Jan 13 from Washington to Duluth, returning Thu, Jan 22, priced at $248 found 3 days ago
Delta
Wed, Sep 24 - Sat, Oct 11
IAD
Washington
DLH
Duluth
$254 Roundtrip, found 3 days ago
$254
Roundtrip
found 3 days ago
Select Delta flight, departing Wed, Sep 24 from Washington to Duluth, returning Sat, Oct 11, priced at $254 found 3 days ago
Delta
Sat, Sep 27 - Sat, Oct 11
IAD
Washington
DLH
Duluth
$269 Roundtrip, found 3 days ago
$269
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Sep 27 from Washington to Duluth, returning Sat, Oct 11, priced at $269 found 3 days ago
Delta
Wed, Sep 24 - Sat, Oct 4
IAD
Washington
DLH
Duluth
$284 Roundtrip, found 3 days ago
$284
Roundtrip
found 3 days ago
Select Delta flight, departing Wed, Sep 24 from Washington to Duluth, returning Sat, Oct 4, priced at $284 found 3 days ago
Delta
Mon, Sep 29 - Sat, Oct 11
IAD
Washington
DLH
Duluth
$290 Roundtrip, found 3 days ago
$290
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, Sep 29 from Washington to Duluth, returning Sat, Oct 11, priced at $290 found 3 days ago
Delta
Sat, Sep 20 - Tue, Sep 23
IAD
Washington
DLH
Duluth
$295 Roundtrip, found 3 days ago
$295
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Sep 20 from Washington to Duluth, returning Tue, Sep 23, priced at $295 found 3 days ago
United
Sat, Sep 20 - Fri, Sep 26
IAD
Washington
DLH
Duluth
$296 Roundtrip, found 3 days ago
$296
Roundtrip
found 3 days ago
Select United flight, departing Sat, Sep 20 from Washington to Duluth, returning Fri, Sep 26, priced at $296 found 3 days ago
Delta
Sat, Sep 27 - Sat, Oct 4
IAD
Washington
DLH
Duluth
$299 Roundtrip, found 3 days ago
$299
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Sep 27 from Washington to Duluth, returning Sat, Oct 4, priced at $299 found 3 days ago
Delta
Mon, Nov 24 - Wed, Dec 3
IAD
Washington
DLH
Duluth
$304 Roundtrip, found 5 days ago
$304
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Nov 24 from Washington to Duluth, returning Wed, Dec 3, priced at $304 found 5 days ago
Delta
Sat, Sep 27 - Fri, Oct 17
IAD
Washington
DLH
Duluth
$305 Roundtrip, found 3 days ago
$305
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Sep 27 from Washington to Duluth, returning Fri, Oct 17, priced at $305 found 3 days ago
Flights from Washington (IAD) to Duluth (DLH)
Origin airport
Washington Dulles Intl.
Destination airport
Duluth Intl.
Airlines serving
Delta, United
Roundtrip price
$248
Distance
921 mi

Washington to Duluth Flights

The cheapest times to fly from Washington to Duluth

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Duluth are during the month of January. You can find some of the cheapest flights from Washington to Duluth with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Duluth

Sunday is one of the best days to book for cheap flights from Washington to Duluth: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Duluth

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Duluth in 2025. You can also book with separate airlines for your outbound and return journeys, from $178 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Duluth flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Duluth airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Duluth Intl. Airport (DLH) cost?
Snag a cheap one-way flight from $178 or cheap return flight from $248 from Washington Dulles Intl. Airport (IAD) to Duluth Intl. Airport (DLH) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Duluth Intl. Airport (DLH)?
Planning your trip for January is a great way to save, as it's the cheapest month for flights between IAD and DLH. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Duluth Intl. Airport (DLH)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest IAD to DLH flight.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Duluth Intl. Airport (DLH)?
You'll need to book a flight with a layover if you're traveling from Washington Dulles Intl. Airport (IAD) to Duluth Intl. Airport (DLH). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from IAD to DLH?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change depending on a number of factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Duluth Intl. Airport (DLH)?
To land at Duluth Intl. Airport (DLH) on schedule, opt for a flight that leaves Washington Dulles Intl. Airport (IAD) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Duluth Intl. Airport (DLH) last-minute?
Last-minute bookings from IAD to DLH are typically more expensive. For the best rates, start looking for flights as early as possible. That said, if you're flexible with your travel dates, it's possible to score a cheap ticket just before your departure.
Is it cheaper to book an IAD to DLH flight and hotel package?
You'll typically save money by booking an IAD to DLH flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. After choosing your preferred accommodations and flights, consider adding extras such as car rentals, tours and activities.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Duluth Intl. Airport (DLH)?
It's generally possible to reschedule or cancel your IAD to DLH flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.