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Dulles Intl

$70+ Cheap flights from Detroit (DTT) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — IAD
sep. 10 — sep. 171
mié. 9/10
mié. 9/17
1 adult, Economy
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Cheapflights Tip: The best prices from Detroit All airports to Washington, D.C. Dulles Intl are usually found in July or October, booked 47 days in advance, depart on a Friday or Thursday and return on a Saturday

Cheap flight deals from Detroit to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Detroit (DTT) to Dulles Intl (IAD). 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 5, 2025.

Round-trip from

$141
(Cheapflightsfares)

One-way from

$70
(Mytrip)

Popular in

November

Cheapest in

July

Average price

$264

Good round-trip deal

$264 or less

Good one-way deal

$178 or less
From Detroit (DTT) to Washington, D.C. Dulles Intl
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One-way flight from Detroit (DTT) to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 6% potential increase in price ($18 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Detroit (DTT) to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Detroit (DTT) to Washington, D.C. Dulles Intl.
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Find flight deals from Detroit to Dulles Intl

Cheapest flights from Detroit to Dulles Intl
Explore the most affordable flight options available from Detroit to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 5, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/2011:45 amDTW - IAD
1 stop6h 39mFrontier
mar. 9/239:15 amIAD - DTW
1 stop4h 52mFrontier
Deal found 9/3$141
This Priceline deal was found by Cheapflights users on 9/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/94:58 pmDTW - IAD
1 stop6h 31mFrontier
mar. 10/149:00 amIAD - DTW
1 stop5h 34mFrontier
Deal found 9/3$143
This Mytrip deal was found by Cheapflights users on 9/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/123:42 pmDTW - IAD
1 stop8h 33mFrontier
dom. 9/147:14 pmIAD - DTW
1 stop13h 30mFrontier
Deal found 9/3$144
This Booking.com deal was found by Cheapflights users on 9/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/102:52 pmDTW - IAD
1 stop5h 03mFrontier
dom. 9/147:14 pmIAD - DTW
1 stop13h 30mFrontier
Deal found 9/3$145
This Priceline deal was found by Cheapflights users on 9/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/174:58 pmDTW - IAD
1 stop6h 31mFrontier
lun. 10/206:15 amIAD - DTW
1 stop9h 48mFrontier
Deal found 9/3$146
This Frontier deal was found by Cheapflights users on 9/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/63:42 pmDTW - IAD
1 stop7h 34mFrontier
jue. 10/236:15 amIAD - DTW
1 stop9h 48mFrontier
Deal found 9/3$147
This Booking.com deal was found by Cheapflights users on 9/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/234:58 pmDTW - IAD
1 stop6h 31mFrontier
jue. 10/306:00 amIAD - DTW
1 stop11h 12mFrontier
Deal found 9/4$148
This Priceline deal was found by Cheapflights users on 9/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/234:58 pmDTW - IAD
1 stop6h 31mFrontier
dom. 10/266:15 amIAD - DTW
1 stop9h 48mFrontier
Deal found 9/3$150
This Trip.com deal was found by Cheapflights users on 9/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/102:52 pmDTW - IAD
1 stop5h 03mFrontier
mié. 9/179:15 amIAD - DTW
1 stop4h 52mFrontier
Deal found 9/3$152
This FlightHub deal was found by Cheapflights users on 9/3. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/211:36 pmDTW - IAD
1 stop28h 48mFrontier
mar. 9/239:15 amIAD - DTW
1 stop4h 52mFrontier
Deal found 9/3$157
This Priceline deal was found by Cheapflights users on 9/4. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/104:58 pmDTW - IAD
1 stop6h 31mFrontier
mar. 10/149:00 amIAD - DTW
1 stop5h 34mFrontier
Deal found 9/4$162

Cheapflights Fare Finder

 
Customize your flight search to find flights from Detroit to Dulles Intl 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 5, 2025.
Use the filters below to find and compare flights from Detroit to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Detroit

Fly to

Dulles Intl

Route

Depart

Return

Price

DetroitWashington, D.C.

DTW - IAD

DTWIAD

Detroit Metropolitan Wayne County

sáb. 9/27

3:42 pm-11:55 pm

1 stop8h 13m

Washington, D.C. Dulles Intl

lun. 9/29

6:10 am-2:46 pm

1 stop8h 36m

$142

DetroitWashington, D.C.

DTW - IAD

DTWIAD

Detroit Metropolitan Wayne County

mié. 9/24

2:52 pm-7:55 pm

1 stop5h 03m

Washington, D.C. Dulles Intl

jue. 9/25

6:10 am-2:46 pm

1 stop8h 36m

$142

DetroitWashington, D.C.

DTW - IAD

DTWIAD

Detroit Metropolitan Wayne County

sáb. 9/20

11:45 am-6:24 pm

1 stop6h 39m

Washington, D.C. Dulles Intl

mar. 9/23

9:15 am-2:07 pm

1 stop4h 52m

$142

DetroitWashington, D.C.

DTW - IAD

DTWIAD

Detroit Metropolitan Wayne County

vie. 9/19

3:42 pm-12:15 am

1 stop8h 33m

Washington, D.C. Dulles Intl

mié. 9/24

9:15 am-2:07 pm

1 stop4h 52m

$143

DetroitWashington, D.C.

DTW - IAD

DTWIAD

Detroit Metropolitan Wayne County

jue. 10/9

4:58 pm-11:29 pm

1 stop6h 31m

Washington, D.C. Dulles Intl

jue. 10/16

6:15 am-4:03 pm

1 stop9h 48m

$143

DetroitWashington, D.C.

DTW - IAD

DTWIAD

Detroit Metropolitan Wayne County

jue. 10/16

4:58 pm-11:29 pm

1 stop6h 31m

Washington, D.C. Dulles Intl

mié. 10/29

8:47 am-5:12 pm

1 stop8h 25m

$143

DetroitWashington, D.C.

DTW - IAD

DTWIAD

Detroit Metropolitan Wayne County

jue. 9/18

3:42 pm-12:15 am

1 stop8h 33m

Washington, D.C. Dulles Intl

dom. 9/21

6:10 am-2:46 pm

1 stop8h 36m

$143

DetroitWashington, D.C.

DTW - IAD

DTWIAD

Detroit Metropolitan Wayne County

vie. 9/26

3:42 pm-12:15 am

1 stop8h 33m

Washington, D.C. Dulles Intl

dom. 9/28

6:10 am-2:46 pm

1 stop8h 36m

$143

DetroitWashington, D.C.

DTW - IAD

DTWIAD

Detroit Metropolitan Wayne County

sáb. 10/4

3:42 pm-10:56 pm

1 stop7h 14m

Washington, D.C. Dulles Intl

jue. 10/9

6:15 am-4:03 pm

1 stop9h 48m

$143

DetroitWashington, D.C.

DTW - IAD

DTWIAD

Detroit Metropolitan Wayne County

lun. 10/6

3:42 pm-11:16 pm

1 stop7h 34m

Washington, D.C. Dulles Intl

jue. 10/9

6:15 am-4:03 pm

1 stop9h 48m

$143

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/4

Showing 1-10 of 19 results
1
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Best time to book a flight from Detroit to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Detroit 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 Detroit to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from Detroit to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Detroit to Dulles Intl. Price data was last updated on August 29, 2025.

The price you pay for your flight from Detroit to Washington, D.C. Dulles Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 47 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Detroit to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Detroit to Washington, D.C. Dulles Intl Airport (average of $296). Flying from Detroit to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.

What is the cheapest time of day to fly from DTT to IAD?

Find hourly flight availability from Detroit to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 5, 2025.

It’s optimal to fly from Detroit to Washington, D.C. Dulles Intl Airport in the morning. By choosing this option you can save up to 46% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from Detroit to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Detroit to Dulles Intl. Price data was last updated on August 31, 2025.

Travelers seeking maximum savings on their Detroit to Washington, D.C. Dulles Intl Airport flight should consider departing on Thursday mornings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Detroit to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from Detroit to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated septiembre 5, 2025.

The most flights from DTT to IAD are scheduled on a Friday (25 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (14 on average).

How much does it cost to fly round-trip from Detroit to Washington, D.C. Dulles Intl Airport?

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated septiembre 5, 2025.
Read through reviews of airlines operating flights from Detroit to Washington, D.C. Dulles Intl Airport, such as Delta and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,977 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,977 reviews
Delta
8.0
Very good
7,977 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,977 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Detroit to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Detroit to Washington, D.C. Dulles Intl?

    Most people fly from Detroit All airports (DTT) if they book a flight from Detroit to Washington, D.C. Dulles Intl. On average, All airports has 19 outbound flights to Washington, D.C. Dulles Intl per day from 3 airlines. Detroit All airports is conveniently located just 0.6 mi from Detroit’s city center.

  • How long is the flight from Detroit to Washington, D.C. Dulles Intl Airport?

    Airlines like Frontier fly from Detroit to Washington, D.C. Dulles Intl Airport in about 8h 13m. The time it takes to get you to your destination can typically vary by up to . There are 383 mi between Detroit and Washington, D.C. Dulles Intl Airport.

  • What are the cheapest airlines flying from Detroit to Washington, D.C. Dulles Intl Airport round-trip?

    According to our current data, Frontier ($98), Delta ($160), and United Airlines ($189) offers the cheapest pricing from Detroit to Washington, D.C. Dulles Intl Airport. Users have found that Frontier is 60% cheaper than the other options available to this destination.

  • What are the most reliable airlines from Detroit to Washington, D.C. Dulles Intl Airport?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Detroit to Washington, D.C. Dulles Intl Airport on time: Endeavor Airlines (91%), ANA (85%), Republic Airways (83%).

  • What are the cheapest flights from Detroit to Washington, D.C. Dulles Intl Airport?

    Looking at all options, your cheapest flight can be booked for $98. While the most popular route (Detroit Metropolitan Wayne County - Washington, D.C. Dulles Intl) can be booked for $149 on average our data indicates $458 when flying from Detroit to Washington, D.C. Dulles Intl Airport.

  • Can I find deals for flights from Detroit to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Detroit to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Detroit to Dulles Intl?

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

  • Can I find deals for business class flights from Detroit to Dulles Intl?

    Yes. Cheapflights offers flight deals from Detroit to Dulles Intl 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 Detroit to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Detroit to Washington, D.C. Dulles Intl Airport (average of $296). Flying from Detroit to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Gaithersburg
Fredericksburg
Linthicum Heights
Fairfax
Towson
Falls Church
Manassas
Rockville
Oxon Hill
Laurel
Dundalk
National Harbor
Waldorf
Hanover

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Alternative routes for Detroit to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Detroit to Dulles Intl

Discover the top 3 airlines that operate flights from Detroit to Dulles Intl. 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 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$98Average$110FlexibilityNo cancel feeOn-time62%
DeltaCheapest$160Average$242FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$189Average$278FlexibilityNo cancel feeOn-time69%

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