Find the cheapest flights on Expedia from (IAD) to (DLH). Flight ticket prices change frequently based on availability and demand. We send price‑drop alerts to make air travel simple and flexible. The lowest one-way fare found on Expedia for this route in the past 7 days starts at $323 for travel on February 18, 2027.
Cheap Flights from Washington to Duluth (IAD-DLH)
Prices were available within the past 7 days and start at $323 for one-way flights and $368 for roundtrip, for the period specified. Prices and availability are subject to change.
Travel between Washington Dulles International Airport (IAD) and Duluth International Airport (DLH) with a selection of airlines offering this domestic short-haul route. Explore various options from full-service carriers to find the itinerary that aligns with your budget, travel schedule, and plans while discovering Duluth's well-known attractions and neighborhoods. Get ready to dive into the details for flights from IAD to DLH.
Fastest flight duration: around 4 hours in-flight, plus roughly 1h 15m layover with one stop
Route distance: roughly 900 miles (1,450 km)
Flights per week: around 7 departures on average
Typical fares (one-way): economy tickets often range from $130–$440, depending on seasonality and how far ahead you book
Flights from Washington Dulles International Airport (IAD) to Duluth International Airport (DLH)
Based on the latest traveler bookings, we've compiled a list of the most popular airlines flying from Washington to Duluth, primarily favored for their one-stop service. Common layovers include Minneapolis-St. Paul International Airport (MSP), with an average layover of about 1 hour, and O'Hare International Airport (ORD), which typically has a layover of around 1 hour and 45 minutes. This allows you to explore various combinations of price, total travel time, and cabin class to select the ideal itinerary for your trip.
Delta: This comprehensive airline provides one-stop service, holding a share of about 52% of the departures on this route. One-way ticket prices usually range from $130 to $455, with an in-flight duration of 4 hours and an overall travel time of approximately 5 hours and 15 minutes, including the layover.
United: Offering one-stop service, United captures roughly 48% of the departures on this route. Their one-way fares generally fall between $145 and $355. Passengers can expect around 4 hours of flight time and a total journey time of about 5 hours and 15 minutes, factoring in the layover.
Alternative route from Washington (IAD) to Duluth (DLH)
Washington to Duluth (DCA-DLH): Ronald Reagan Washington National Airport (DCA) is located approximately 23 miles from Washington Dulles International Airport (IAD). For this route, one-way economy fares generally fall between $145 and $545, influenced by the travel season and the timing of your booking. Typically, this route features one-stop flights, with common layovers at O'Hare International Airport (ORD) and Minneapolis - St. Paul International Airport (MSP). Major airlines servicing this route include United and Delta, and first-class service is also offered.
How to find the best prices for flights from Washington (IAD) to Duluth (DLH)
Getting some of the best deals on flights from Washington to Duluth is all about timing and flexibility. Here are some key tips to help you save:
Best times to book and fly: cheaper fares are usually found when booking 2-8 weeks in advance, which coincides with when most travelers make their reservations. Morning departures between 5 a.m. and 12 p.m. tend to be less expensive and are also the most popular. Additionally, flying on Saturday generally offers lower prices, while Thursday is the most favored travel day.
Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.* Find Duluth hotel and flight deals.
Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.
*Members only. Savings vary and are not available on all bundles. Select hotels.
Arriving at Duluth International Airport from Washington Dulles International Airport
Duluth welcomes travelers from Washington with a range of transport options based on price, convenience, and proximity. For departures, Washington Dulles International Airport is roughly a 40-minute drive (covering about 29 miles) from central Washington. Here's how to reach Duluth efficiently:
Hotel transfer: Transfers offer a convenient way to reach your hotel in Duluth, with options including free hotel shuttles and private rides, which can be arranged in advance with your hotel.
Car rental: Renting a car from Duluth International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Duluth International Airport on Expedia.
Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
Public transportation: From Duluth International Airport, Duluth Seaport, a seaport, is located about 7.2 miles away by car, while Duluth Transportation Center, a bus station, is situated approximately 7.4 miles from the airport, also accessible by car.
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 2026. You can also book with separate airlines for your outbound and return journeys, from $323 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, DC (IAD-Washington Dulles Intl.) to Duluth, MN (DLH-Duluth Intl.) cost?
You can find cheap one-way flights from $323 and cheap return flights $368 Washington, DC (IAD-Washington Dulles Intl.) to Duluth, MN (DLH-Duluth Intl.) with Expedia. One-way flights usually range from $426 to $751, and return flights typically cost between $369 and $1137. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Washington, DC (IAD-Washington Dulles Intl.) to Duluth, MN (DLH-Duluth Intl.) ticket fares go up or down.
*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Washington, DC (IAD-Washington Dulles Intl.) to Duluth, MN (DLH-Duluth Intl.)?
The cheapest month to fly from IAD to DLH is January when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Washington, DC (IAD-Washington Dulles Intl.) to Duluth, MN (DLH-Duluth Intl.)?
Enter IAD to DLH and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Washington, DC (IAD-Washington Dulles Intl.) to Duluth, MN (DLH-Duluth Intl.)?
Delta is one of the cheapest airlines offering connecting flights from Washington, DC (IAD) to Duluth (DLH), with round-trip tickets starting from around $325. This option makes it easier for you to reach the scenic beauty of Minnesota without overspending. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Washington, DC (IAD-Washington Dulles Intl.) to Duluth, MN (DLH-Duluth Intl.)?
To find a cheap flight from Washington, DC (IAD-Washington Dulles Intl.) to Duluth, MN (DLH-Duluth Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Washington, DC (IAD-Washington Dulles Intl.) to Duluth, MN (DLH-Duluth Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to Duluth, MN (DLH-Duluth Intl.)?
The earliest flight from Washington, DC (IAD) to Duluth (DLH) typically departs at around 6:00 AM local time, operated by United. This is a seasonal service active in February. An early departure can help you maximize your time in Duluth. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to Duluth, MN (DLH-Duluth Intl.)?
For flights from Washington Dulles Intl. (IAD) to Duluth Intl. (DLH), the most popular departure times are in the early morning, from 6am to 9am. About 53% of passengers prefer this time window. Many major carriers, including United and Delta, offer flights during this window. This timing is popular because it allows you to arrive in Duluth with plenty of time to enjoy your day.
How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to Duluth, MN (DLH-Duluth Intl.)?
A flight from IAD to DLH with a layover takes around 5 hours 50 minutes, with the route covering approximately 921 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Washington, DC (IAD-Washington Dulles Intl.) to Duluth, MN (DLH-Duluth Intl.)?
First class seats are offered on the IAD to DLH route with Delta Air Lines and United Airlines.
How do I earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Duluth, MN (DLH-Duluth Intl.) flight with Expedia?
It's easy to earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Duluth, MN (DLH-Duluth Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.
*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Duluth from Washington Dulles Intl. (IAD)?
If you're planning to travel to Duluth from Washington Dulles Intl. (IAD), you can fly into Duluth Intl. (DLH) Some flights may connect through major hubs like Pittsburgh Intl. (PIT), Indianapolis Intl. (IND), Hopkins Intl. (CLE) before reaching Duluth. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Washington, DC (IAD-Washington Dulles Intl.) to Duluth, MN (DLH-Duluth Intl.) at the last minute?
Typically, booking a last minute flight from Washington, DC (IAD-Washington Dulles Intl.) to Duluth, MN (DLH-Duluth Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Washington, DC (IAD-Washington Dulles Intl.) to Duluth, MN (DLH-Duluth Intl.) flight and hotel package?
Securing a Washington, DC (IAD-Washington Dulles Intl.) to Duluth, MN (DLH-Duluth Intl.) Duluth Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington, DC (IAD-Washington Dulles Intl.) to Duluth, MN (DLH-Duluth Intl.)?
If you booked your Washington, DC (IAD-Washington Dulles Intl.) to Duluth, MN (DLH-Duluth Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.