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Dulles Intl

$90+ Cheap flights from Raleigh (RDU) 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 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — IAD
Nov 1 — Nov 81
Sat 11/1
Sat 11/8
1 adult, Economy
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Cheapflights Tip: The best prices from Raleigh-Durham to Washington, D.C. Dulles Intl are usually found in August or May, booked 83 days in advance, depart on a Thursday or Tuesday and return on a Thursday

Cheap flight deals from Raleigh to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Raleigh (RDU) 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 October 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$179
(United Airlines)

One-way from

$90
(United Airlines)

Popular in

February

Cheapest in

August

Average price

$251

Good round-trip deal

$378 or less

Good one-way deal

$151 or less
Provider with most accurate pricing for Raleigh-Durham-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Raleigh-Durham-Washington, D.C. Dulles Intl flights.
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From Raleigh-Durham to Washington, D.C. Dulles Intl
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One-way flight from Raleigh-Durham to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 11% potential increase in price ($33 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Raleigh-Durham to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Raleigh-Durham to Washington, D.C. Dulles Intl.
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Find flight deals from Raleigh to Dulles Intl

Cheapest flights from Raleigh to Dulles Intl
Explore the most affordable flight options available from Raleigh to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 2, 2025.

This United Airlines deal was found by Cheapflights users on 9/30. 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.
Thu 10/236:00 amRDU - IAD
Nonstop1h 15mUnited Airlines
Thu 10/308:25 amIAD - RDU
Nonstop1h 08mUnited Airlines
Deal found 9/30$179
This United Airlines deal was found by Cheapflights users on 9/30. 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.
Tue 10/143:09 pmRDU - IAD
Nonstop1h 08mUnited Airlines
Wed 10/2212:57 pmIAD - RDU
Nonstop1h 10mUnited Airlines
Deal found 9/30$180
This Frontier deal was found by Cheapflights users on 9/29. 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.
Thu 10/96:15 amRDU - IAD
1 stop9h 23mFrontier
Fri 10/104:45 pmIAD - RDU
1 stop6h 14mFrontier
Deal found 9/29$181
This United Airlines deal was found by Cheapflights users on 10/1. 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.
Mon 11/1010:35 amRDU - IAD
Nonstop1h 09mUnited Airlines
Wed 11/1210:30 pmIAD - RDU
Nonstop1h 11mUnited Airlines
Deal found 10/1$182
This United Airlines deal was found by Cheapflights users on 10/2. 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.
Wed 11/126:00 amRDU - IAD
Nonstop1h 09mUnited Airlines
Sat 11/155:37 pmIAD - RDU
Nonstop1h 20mUnited Airlines
Deal found 10/2$183
This United Airlines deal was found by Cheapflights users on 10/1. 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.
Thu 10/1610:36 amRDU - IAD
Nonstop1h 08mUnited Airlines
Thu 10/238:25 amIAD - RDU
Nonstop1h 09mUnited Airlines
Deal found 10/1$184
This Priceline deal was found by Cheapflights users on 9/30. 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.
Fri 10/101:51 pmRDU - IAD
1 stop7h 02mFrontier
Mon 10/134:45 pmIAD - RDU
1 stop6h 14mFrontier
Deal found 9/30$186
This Kiwi.com deal was found by Cheapflights users on 10/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/19:09 amRDU - IAD
2 stops14h 46mFrontier
Mon 11/36:00 amIAD - RDU
1 stop12h 02mFrontier
Deal found 10/1$187
This United Airlines deal was found by Cheapflights users on 10/1. 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.
Wed 10/156:00 amRDU - IAD
Nonstop1h 08mUnited Airlines
Sat 10/188:25 amIAD - RDU
Nonstop1h 09mUnited Airlines
Deal found 10/1$189
This United Airlines deal was found by Cheapflights users on 9/30. 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.
Wed 10/810:36 amRDU - IAD
Nonstop1h 08mUnited Airlines
Tue 11/188:25 amIAD - RDU
Nonstop1h 08mUnited Airlines
Deal found 9/30$190
This Kiwi.com deal was found by Cheapflights users on 9/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1512:30 pmRDU - IAD
1 stop7h 16mFrontier
Sun 10/198:02 pmIAD - RDU
2 stops17h 30mFrontier
Deal found 9/30$193
This Kiwi.com deal was found by Cheapflights users on 10/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1512:30 pmRDU - IAD
1 stop7h 16mMultiple Airlines
Sat 10/187:15 amIAD - RDU
2 stops9h 55mMultiple Airlines
Deal found 10/1$194

Cheapflights Fare Finder

 
Customize your flight search to find flights from Raleigh 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 October 2, 2025.
Use the filters below to find and compare flights from Raleigh to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Raleigh

Fly to

Dulles Intl

Route

Depart

Return

Price

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Sat 11/22

10:35 am-11:44 am

Nonstop1h 09m

Washington, D.C. Dulles Intl

Mon 11/24

5:37 pm-6:50 pm

Nonstop1h 13m

$179

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Fri 3/6

7:51 pm-8:55 pm

Nonstop1h 04m

Washington, D.C. Dulles Intl

Tue 3/10

5:45 pm-6:58 pm

Nonstop1h 13m

$179

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Thu 12/25

7:40 pm-8:58 pm

Nonstop1h 18m

Washington, D.C. Dulles Intl

Mon 12/29

8:21 am-9:39 am

Nonstop1h 18m

$179

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Fri 2/13

6:00 am-7:10 am

Nonstop1h 10m

Washington, D.C. Dulles Intl

Sat 2/14

12:53 pm-2:03 pm

Nonstop1h 10m

$179

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Mon 11/10

10:35 am-11:44 am

Nonstop1h 09m

Washington, D.C. Dulles Intl

Wed 11/12

10:30 pm-11:41 pm

Nonstop1h 11m

$182

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Thu 10/30

8:00 pm-9:09 pm

Nonstop1h 09m

Washington, D.C. Dulles Intl

Fri 10/31

8:25 am-9:33 am

Nonstop1h 08m

$182

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Thu 10/16

3:09 pm-4:17 pm

Nonstop1h 08m

Washington, D.C. Dulles Intl

Sat 10/18

12:57 pm-2:14 pm

Nonstop1h 17m

$189

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Thu 10/16

6:00 am-7:15 am

Nonstop1h 15m

Washington, D.C. Dulles Intl

Mon 10/20

10:40 pm-11:52 pm

Nonstop1h 12m

$189

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Mon 11/3

3:05 pm-4:14 pm

Nonstop1h 09m

Washington, D.C. Dulles Intl

Thu 11/6

8:25 am-9:33 am

Nonstop1h 08m

$193

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Wed 10/15

10:36 am-11:44 am

Nonstop1h 08m

Washington, D.C. Dulles Intl

Sun 10/19

12:57 pm-2:07 pm

Nonstop1h 10m

$199

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/29

Showing 1-10 of 22 results
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Compare providers for flights from Raleigh to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Raleigh to Dulles Intl in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Raleigh-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Raleigh-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Raleigh-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Raleigh-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Raleigh-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Raleigh to Dulles Intl

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

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

Use this chart to determine the optimal time to book a round-trip flight from Raleigh to Dulles Intl. Price data was last updated on September 26, 2025.

Booking 72 days in advance of your planned departure date is, on average, the best time to get cheap flights from Raleigh to Washington, D.C. Dulles Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, August is the cheapest month in which you can book a flight from Raleigh to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Raleigh 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 RDU to IAD?

Find hourly flight availability from Raleigh 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 October 2, 2025.

It’s optimal to fly from Raleigh to Washington, D.C. Dulles Intl Airport in the morning. By choosing this option you can save up to 36% on the cost of your flight, compared to a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Raleigh to Dulles Intl. Price data was last updated on September 28, 2025.

Travelers seeking maximum savings on their Raleigh 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.

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

The best insider tips for Raleigh to Washington, D.C. Dulles Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Raleigh to Washington, D.C. Dulles Intl Airport trip
Airports
RDU

RDU offers free Wi-Fi throughout the terminals. Connect to the 'RDU Free WiFi' network for seamless browsing before your flight.

Read more about RDUby John Walton
IAD

The Washington Metro Silver line reaches IAD in under 40 minutes, offering a cost-effective way to reach the city.

Read more about IADby Ramsey Qubein
Our travel experts
John Walton

John Walton

Expert on RDU

John Walton

John Walton

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

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 October 2, 2025.
See what other customers who have flown with United Airlines from Raleigh to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,933 reviews

Food

6.6

Overall

7.4

Crew

8.1

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
United Airlines
7.4
Good
8,933 reviews
United Airlines
7.4
Good
8,933 reviews

Food

6.6

Overall

7.4

Crew

8.1

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

Related info for your journey

Find useful and relevant information for your journey from Raleigh 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 Raleigh to Washington, D.C. Dulles Intl?

    Located just 11.1 mi from the city center, Raleigh-Durham is the airport most travelers will use when flying to Washington, D.C. Dulles Intl from Raleigh. Booking flights from Raleigh-Durham (RDU) to Washington, D.C. Dulles Intl should be relatively easy as there are 16 daily outbound flights to Washington, D.C. Dulles Intl from 1 airline.

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

    There are many flights that can get you from Raleigh to Washington, D.C. Dulles Intl Airport in 1h 09m. Fly via United Airlines to get the fastest option. Raleigh and Washington, D.C. Dulles Intl Airport are separated by a distance of 224 mi. Most flights are nonstop.

  • What is the cheapest airline to fly from Raleigh to Washington, D.C. Dulles Intl Airport round-trip?

    According to our current data, United Airlines ($179), offers the cheapest pricing from Raleigh to Washington, D.C. Dulles Intl Airport. United Airlines is 33% cheaper than the average price of flights available within the next 90 days to this destination.

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

    Before booking your flight to Washington, D.C. Dulles Intl Airport from Raleigh, check out the most reliable airlines to get you to your destination on time: ITA Airways (100%), Air China (94%), Republic Airways( 90%).

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

    On average you can expect to pay $807 for a flight from Raleigh to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is $108 while the most popular route, (Raleigh-Durham - Washington, D.C. Dulles Intl) is currently priced at $171.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Raleigh to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Raleigh 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
Hanover
Gaithersburg
Fredericksburg
Fairfax
Linthicum Heights
Falls Church
Owings Mills
Manassas
Oxon Hill
Laurel
Towson
National Harbor
Dundalk
Waldorf

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Alternative routes for Raleigh to Dulles Intl

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

Discover the top airline that operate flights from Raleigh 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 October 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$261FlexibilityNo cancel feeOn-time69%

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